A 56 kg girl stands on the Earth. (Diagram not to scale)
a) what is her weight?
b)If she were standing on a tower that is as high as the radius of the Earth what would
she weigh there?

If total internal reflection occurs, it means that the angle of incidence of the light is greater than the critical angle, and the light cannot pass through the interface between two media.

The critical angle is defined as the angle of incidence at which the angle of refraction becomes 90 degrees, and the refracted light travels along the interface.

The critical angle depends on the refractive indices of the two media, and can be calculated using Snell's law. For the case of light traveling from a medium with a higher refractive index (such as a solid or a liquid) to a medium with a lower refractive index (such as air), the critical angle can be calculated as:

sin(critical angle) = n2 / n1

where n1 is the refractive index of the medium with the higher refractive index, and n2 is the refractive index of the medium with the lower refractive index.

If total internal reflection occurs, it means that the angle of incidence is greater than the critical angle, which implies that the refractive index of the liquid must be greater than the refractive index of the medium with the lower refractive index (e.g., air). Therefore, we can say that the minimum possible index of refraction of the liquid is equal to the refractive index of the medium with the lower refractive index.

Learn more about critical angle

https://brainly.com/question/3314727

#SPJ4

The spring constant of the spring is 3.00N/m. Therefore option 3 is correct.

To find the spring constant, we can use Hooke's Law, which states that the force exerted by a spring is directly proportional to the displacement of the spring from its equilibrium position.

The formula for Hooke's Law is F = kx, where F is the force, k is the spring constant, and x is the displacement.

In this case, we are given that compressing the spring by 0.500m causes a force of 1.50N. Using the formula F = kx, we can substitute the values:

1.50N = k * 0.500m

To find the value of k, we can rearrange the equation:

k = F / x

k = 1.50N / 0.500m

k = 3.00N/m

Therefore, the spring constant of the spring is 3.00N/m, which corresponds to option 3.

Know more about Hooke's Law:

https://brainly.com/question/30379950

#SPJ2

The distance between the two slits is 2067.6 mm. This can be calculated using the equation d=λxD/y, where λ is the wavelength of the laser light, D is the distance between the slits and the screen, and y is the distance between the bright lines on the screen.

Substituting the given values in the equation, we get

d = (633 x 11.36) / 3.4

d = 2067.6 mm

Therefore, the distance between the two slits is 2067.6 mm.

To understand the equation, we must consider the phenomenon of interference. When a wavelength of light passes through two slits, it creates two waves that interfere with each other. The bright lines on the screen occur when the two waves are in phase, and the dark lines occur when the waves are out of phase.

The distance between the bright lines on the screen is equal to one wavelength of the laser light multiplied by the ratio between the distance between the two slits and the distance between the two slits and the screen.

Complete Question:

We  pass a laser beam through a double slit. On a screen 11.36 m away, we observe a series of bright lines which are 3.4 mm apart. The wavelength of the laser light is 633 nm. What is the distance between the two slits?

To learn more about distance visit:

https://brainly.com/question/26550516

#SPJ4

The magnitude of the impulse imparted to the boulder is 53.503 N*s.

We know that

Impulse = change in momentum = final momentum - initial momentum

initial momentum = mass * initial velocity

initial momentum = 12.1 kg * 4.43 m/s = 53.503 kg m/s

final momentum of the boulder using the formula:

final momentum = mass * final velocity

final momentum = 12.1 kg * 0 m/s = 0 kg m/s

In conclusion, the change in momentum of the boulder is:

change in momentum = final momentum - initial momentum = 0 kg m/s - 53.503 kg m/s = -53.503 kg m/s

The negative sign is an indication that the momentum of the boulder has decreased.

|Impulse| = |-53.503 kg m/s| = 53.503 N*s

Learn mo0re about impulse at: https://brainly.com/question/229647

#SPJ1

This is due to the fact that the gravitational pull of the sun is proportionate to the mass of each body, with the larger body being subjected to a stronger gravitational pull than the smaller body.

Depending on how far away from the Sun a planet is, it orbits the Sun at a different speed. When a planet is closer to the Sun, it moves more quickly due to the Sun's stronger gravitational pull.

A planet's angular momentum does not change as it gets further from the Sun, thus it moves more slowly at that distance. The angular momentum of a planet in a circular orbit is determined by its mass (m), its distance from the Sun (d), and its velocity (v).

To know more about momentum visit:-

https://brainly.com/question/30677308

#SPJ1

The maximum torque on the wire is 0.1306 Nm.

Hi, I'd be happy to help you with your question. To find the maximum torque on a wire formed into a circle with a diameter of 10.9 cm, placed in a uniform magnetic field of 2.80 mT, and carrying a current of 5.00 A, follow these steps:

1. Calculate the radius of the circle:
Radius = Diameter / 2 = 10.9 cm / 2 = 5.45 cm = 0.0545 m (converted to meters)

2. Calculate the area of the circle:
Area = π * Radius^2 = π * (0.0545 m)^2 = 0.00933 m^2

3. Convert the magnetic field from millitesla (mT) to tesla (T):
Magnetic Field = 2.80 mT = 0.00280 T

4. Calculate the maximum torque on the wire:
Torque = (Current * Area * Magnetic Field) * sin(θ)
Since we need to find the maximum torque, we will use sin(θ) = 1:
Torque = (5.00 A * 0.00933 m^2 * 0.00280 T) * 1 = 0.1306 Nm

The maximum torque on the wire is 0.1306 Nm.

Learn more about torque

brainly.com/question/25708791

#SPJ11

Zach's weight before the elevator starts braking is 833 Newton.

Identifying Zach's weight is necessary to prevent the braking of the lift in which he is now riding. Zach is 85 kg in weight and the lift is dropping at 11 m/s.

The first floor is reached after 2.5 seconds of braking by the elevator. We employ the weight formula—which is the sum of mass and gravity—to solve the issue.

Zach's weight can be determined by dividing his mass of 85 kg by the gravitational acceleration, which equals about 9.8 m/s2. This results in an 833 Newton weight before the lift begins to brake.

Learn more about weight:

https://brainly.com/question/30176113

#SPJ4

Answer:

Mechanical energy is conserved in a perfect system only because of the absence of friction.

A mechanical wave is a wave that requires a medium to travel through, such as sound waves or water waves. In everyday life, we experience mechanical waves when we hear sounds or see water waves in a pond.

Transverse Wave: A transverse wave is a wave that vibrates perpendicular to the direction of wave propagation, such as light waves or radio waves.

We use transverse waves every day when we use our phones to receive radio waves.

Longitudinal Wave: A longitudinal wave is a wave that vibrates parallel to the direction of wave propagation, such as sound waves or seismic waves.

We hear sound through longitudinal waves, and we feel earthquakes through seismic waves.

Wave Speed: Wave speed is the speed with which a wave propagates via a particular medium.

When we watch a wave on the beach, we can estimate the wave speed by observing how fast it moves across the sand.

Wavelength: Wavelength is the distance between two corresponding points on a wave, such as the distance between two crests.

We can measure the wavelength of light using a spectroscope.

Frequency: Frequency is the number of waves that pass a given point in a given amount of time, such as the number of waves passing a fixed point in one second.

We use frequency to measure the pitch of sound or the radio frequency of a station.

Amplitude: Amplitude is the maximum displacement of a wave from its resting position, such as the height of a wave from its crest to its trough.

The amplitude of a sound wave determines how loud the sound is.

Learn more about waves here:

https://brainly.com/question/25954805

#SPJ1

The forces are both, electrical and magnetic forces.

Hi! Danielle's device, which consists of an iron nail wrapped with a thin copper wire connected to a battery, can produce both electrical and magnetic forces. When the battery is connected, an electrical current flows through the copper wire, creating an electrical force. This current also generates a magnetic field around the wire, turning the iron nail into an electromagnet and producing a magnetic force. Therefore, the correct answer is both electrical and magnetic forces.

Learn more about forces

brainly.com/question/13191643

#SPJ11

The velocity of the object when it hits the Earth's surface depends only on the height from which it was dropped and the acceleration due to gravity.

The velocity of an object when it hits the Earth's surface can be calculated using the principle of conservation of energy. When the object is released from rest at a distance r0 from the Earth's center, it has an initial gravitational potential energy of mgh0, where g is the acceleration due to gravity and h0 is the height of the object above the Earth's surface.

As the object falls towards the Earth's surface, its potential energy is converted into kinetic energy. When it hits the Earth's surface, all of its potential energy has been converted into kinetic energy. Therefore, we can write:

[tex]mgh0 = (1/2)mv^2[/tex]

where v is the velocity of the object when it hits the Earth's surface.

Solving for v, we get:

v = sqrt(2gh0)

Learn more about The velocity

https://brainly.com/question/17127206

#SPJ4

The upper limb is the side of the chicken's body did this wing belong to.

Humerus, shoulder, and joint are related to the anatomy of the upper limb. The humerus is the long bone in the upper arm, the shoulder is the joint that connects the arm to the body, and the joint refers to the articulation between bones.

In a chicken, the shoulder joint is located at the junction of the humerus (upper arm bone) and the scapula (shoulder blade). It is a ball-and-socket joint that allows for a wide range of motion in the chicken's wing. The shoulder joint is important for a chicken's ability to fly, flap its wings, and perform other movements that require mobility and stability in the upper limb.

Read more on upper limb here:https://brainly.com/question/6963710

#SPJ1

The term that has the same meaning for everyone is c. elevated temperature.

The term "elevated temperature" refers to a temperature that is higher than normal, regardless of what the normal temperature is. For example, what is considered a normal temperature in one region may be different from what is considered normal in another region, but an elevated temperature will always be higher than the normal temperature in that particular region.

On the other hand, the terms "hot," "warm," and "temperature of 990f" are all relative and can have different meanings for different people based on their individual experiences and perspectives. Therefore, "elevated temperature" is the only term that can be universally understood as referring to a temperature that is higher than what is considered normal or average.

Learn more about temperature at:

https://brainly.com/question/23411503

#SPJ11

The minimum uncertainty in the ball's position is 3.5 x 10^-32 meters.

To calculate the uncertainty, multiply the speed (30.0 m/s) by the accuracy (0.001). This results in an uncertainty in speed of 0.03 m/s.

Now, apply Heisenberg's Uncertainty Principle to find the minimum uncertainty in position. The formula is:

Δx * Δp ≥ ħ/2

where Δx is the uncertainty in position, Δp is the uncertainty in momentum, and ħ is the reduced Planck constant (approximately 1.05 x 10^-34 Js).

First, find Δp by multiplying the mass of the ball (50.0 g or 0.05 kg) by the uncertainty in speed (0.03 m/s). This gives a Δp of 0.0015 kg m/s.

Now, solve for Δx:

Δx ≥ ħ / (2 * Δp)

Δx ≥ (1.05 x 10^-34 Js) / (2 * 0.0015 kg m/s)

Δx ≥ 3.5 x 10^-32 m

To learn more about : meters

https://brainly.com/question/29976625

#SPJ11

The width of the central diffraction peak is 0.045 meters or 4.5 centimeters.

The width of the central diffraction peak on a screen 2.50 m behind a 0.0328-mm-wide slit illuminated by 588-nm light can be calculated using the formula:

w = (λL) ÷ a

where w denotes the width of the central diffraction peak, λ denotes the light's wavelength, L denotes the separation between the slit and the screen, and a denotes the slit's width.

When we enter the specified values into the formula, we obtain:

w = (588 nm x 2.50 m) ÷ 0.0328 mm

Converting the units to meters:

w = (588 x 10⁻⁹ m x 2.50 m) ÷ (0.0328 x 10⁻³ m)

Simplifying:

w = 0.045 m

To learn more about diffraction follow the link:

https://brainly.com/question/12290582

#SPJ4

Sandra expended 1376.256 kcal of caloric expenditure averaging an oxygen consumption rate of 38.4 ml/kg/min over her 30-minute work interval.

Weight = 71.8 kg

oxygen consumption rate = 38.4 ml/kg/min

Time = 30-minute

To calculate caloric expenditure of Sandra, the formula required is as:

Caloric expenditure = oxygen consumption rate x weight (kg) x time x 5

Caloric expenditure = oxygen consumption rate x weight x time x 5

Caloric expenditure = 38.4 ml/kg/min x 71.8 kg x 30 min x 5

Caloric expenditure = 275.2512 L

Assume that 1 L of oxygen consumed corresponds to 5 kcal of energy expended,

Caloric expenditure = 275.2512 L x 5 kcal/L

Caloric expenditure = 1376.256 kcal

Therefore, we can conclude that Sandra expended 1376.256 kcal during her 30-minute work interval.

To learn more about caloric expenditure

https://brainly.com/question/3185717

#SPJ4

The given statement, The Code generally requires receptacles installed in an unfinished basement to be GFCI protected. The exception(s) to the general rule includes a single receptacle installed to serve a permanently installed alarm system, is true because unfinished basements are considered to be damp and potentially hazardous environments.

The National Electrical Code (NEC) generally requires that all receptacles installed in unfinished basements be protected by ground-fault circuit interrupters (GFCIs) to prevent electrical shock hazards. However, there are some exceptions to this rule.

One of the exceptions is for a single receptacle that is installed to serve a permanently installed alarm system in the unfinished basement. Such a receptacle does not need to be GFCI protected, as long as it is designated as a dedicated branch circuit for the alarm system and meets other applicable code requirements.

It's worth noting that local electrical codes may have additional requirements or exceptions, so it's always a good idea to consult with a licensed electrician or local code authority for specific information related to your installation.

To know more about receptacles, here

brainly.com/question/31150070

#SPJ4

The time required for the object attached to a spring to move from the equilibrium position to half the amplitude depends on the specifics of the motion and cannot be determined solely from the period of oscillation.

During its motion, the object attached to a spring oscillates with a sinusoidal motion, which means its speed is not constant. At the maximum displacement, the speed is zero, while it is maximum when the object passes through the equilibrium position. Therefore, the time required for the object to move from the equilibrium position to half the amplitude is not half the period, but rather a smaller fraction of the period.

To determine the time required, one would need to use the equation of motion for a simple harmonic oscillator:

x(t) = A cos(ωt + φ)

where x(t) is the position of the object at time t, A is the amplitude, ω is the angular frequency, and φ is the phase constant. From this equation, we can find the position of the object when it is halfway to the amplitude by setting x(t) equal to A/2 and solving for t:

A/2 = A cos(ωt + φ)

cos(ωt + φ) = 1/2

ωt + φ = ±π/3

t = (±π/3 - φ) / ω

Therefore, the time required for the object to move from the equilibrium position to half the amplitude depends on the phase constant φ and the angular frequency ω. It is important to note that this is a general solution for a simple harmonic oscillator, and specific values for these variables would need to be provided to obtain a numerical answer.

Learn more about harmonic oscillator:

https://brainly.com/question/30354005

#SPJ4

Using the principle of conservation of momentum, we can determine that the gun moves in the opposite direction with a speed of 9.41 m/s after the bullet is fired. This calculation assumes no external forces acting on the system.

This scenario can be analyzed using the principle of conservation of momentum. According to this principle, the total momentum of a system remains constant if no external forces act on it. In this case, the system consists of the gun and the bullet, which are initially at rest on the ice. When the gun is dropped, it gains some horizontal velocity, while the bullet is propelled forward due to the explosion inside the gun.

Let's assume that the gun moves with a speed v after the bullet is fired. The momentum of the system before the gun is dropped is zero since both the gun and the bullet are at rest. After the bullet is fired, the momentum of the system is given by:

p = mv + Mu

where m is the mass of the bullet, u is its initial velocity (325 m/s in this case), M is the mass of the gun, and v is the velocity of the gun after the bullet is fired. Since momentum is conserved, we can equate the initial and final momenta:

0 = mv + Mu

=> v = -(m/M)u

Substituting the given values, we get:

v = -(0.04 / 1.7) * 325

= -9.41 m/s

To learn more about conservation of momentum

https://brainly.com/question/24989124

#SPJ4

The net force pulling up on the bottom pulley is equal to one-sixth of the weight of the mass.

In this scenario, we can use the concept of tension in the rope to determine the net force pulling up on the bottom pulley.

The tension in the rope is the same throughout, so the tension in the strand being pulled by the man is equal to the tension in the six strands running between the two pulleys.

The force of tension pulling up on the bottom pulley is equal to six times the tension in the rope, since there are six strands of rope running between the pulleys.

The force of gravity pulling down on the mass is equal to its weight, which is given by:

F_gravity = m *

where m is the mass of the object and g is the acceleration due to gravity.

Since the mass is suspended at a constant speed, the net force on the mass must be zero, which means that the force of tension pulling up on the bottom pulley must be equal to the force of gravity pulling down on the mass:

6 * T = m *

where T is the tension in the rope.

Solving for the net force pulling up on the bottom pulley, we get:

6 * T = m * g

T = m * g / 6

Therefore, the net force pulling up on the bottom pulley is equal to one-sixth of the weight of the mass.

Learn more about The net force

https://brainly.com/question/13410291

#SPJ4

The tower of Pisa can lean up to an additional 3.5 m off center before becoming unstable.

To determine how much farther the tower can lean before it becomes unstable, we need to calculate the current location of the center of mass and the maximum distance it can move before leaving the base.

Assuming the tower is a uniform cylinder, we can calculate the location of its center of mass using the formula:

x_cm = L/2 + h/4

where L is the length of the cylinder (equal to the diameter, or 7.0 m), and h is the height of the cylinder (equal to 55 m).

Substituting the given values, we get:

x_cm = 7.0/2 + 55/4

x_cm = 5.25 + 13.75

x_cm = 19.0 m

This means that the center of mass of the tower is currently located 19.0 m from the center of the base.

To determine how much farther the tower can lean before becoming unstable, we need to calculate the maximum distance the center of mass can move before leaving the base. This distance is equal to half the diameter of the base, or:

d_max = 7.0/2

d_max = 3.5 m

To know more about Leaning Tower of Pisa:

https://brainly.com/question/30554306

#SPJ4

The resistance of R1 and R2 in parallel is lower than their resistance in series.

When two resistors, R1 and R2, are in parallel, the equivalent resistance is calculated as

R = (R1 * R2) / (R1 + R2).

The resulting resistance is always lower than either of the individual resistors. In contrast, when R1 and R2 are in series, the equivalent resistance is calculated as R = R1 + R2. The resulting resistance is always higher than either of the individual resistors.

1. Resistance in Series: In a series circuit, the total resistance R(total) is the sum of the individual resistances (R1 and R2). Mathematically, it is given by:
R (total)= R1 + R2
2. Resistance in Parallel: In a parallel circuit, the total resistance R(total) is found using the reciprocal formula. Mathematically, it is given by:
1/R(total) = 1/R1 + 1/R2
Now, let's compare the two cases:
In a series circuit, the total resistance is simply the sum of the individual resistances, whereas in a parallel circuit, the total resistance is determined by the reciprocal formula. Generally, the total resistance in a parallel circuit is lower than that in a series circuit, due to the reciprocal relationship. This means that when R1 and R2 are connected in parallel, their combined resistance will be less than when they are connected in series.

For more such questions on resistance , Visit:

https://brainly.com/question/28135236

#SPJ11

When retrograde motion occurs and how it is related to Mars's orbit around the Sun:

Retrograde motion occurs when a planet appears to move backward in the sky from Earth's perspective. In the case of Mars, this happens when Earth overtakes Mars in their respective orbits around the Sun.

To understand when Mars will be in retrograde motion, consider these steps:

1. Picture both Mars and Earth orbiting the Sun, with Mars having a larger, slower orbit due to its greater distance from the Sun.
2. As Earth moves faster in its orbit, it eventually catches up to and passes Mars.
3. During this time, the relative positions of Earth, Mars, and the Sun create the illusion of Mars moving backward in the sky, as seen from Earth.

So, when trying to identify the spot where Mars will be in retrograde motion, look for the point in its orbit where Earth is passing Mars, creating the optical illusion of Mars moving backward in the sky.

To know more about Retrograde motion:

https://brainly.com/question/31026528

#SPJ11

While the element Krypton was indeed named after the Greek word "kryptos," meaning "hidden" or "secret," the reason for its name is not related to its properties as a secret element.

Krypton was discovered in 1898 by British chemists Sir William Ramsay and Morris Travers. They had been studying the gas that was produced when they evaporated liquid air, and they found that this gas contained a previously unknown element. Ramsay named the element Krypton because of its ability to hide within the other gases in the air, making it difficult to detect.

So, while the name Krypton does have a connection to the idea of secrecy, it is not because the element itself has any particular properties that relate to secrecy. Rather, it was named for its elusive nature and the difficulty in detecting it.

Learn more about Krypton here:

https://brainly.com/question/2364337

#SPJ1

The speed of the proton relative to the accelerator is approximately 0.82 times the speed of light.

In the special theory of relativity, the total energy of a particle can be expressed as the sum of its rest energy and its kinetic energy. If a proton in a certain particle accelerator has a kinetic energy that is equal to its rest energy, then its total energy is twice its rest energy, i.e.,

[tex]E_total^2 = (pc)^2 + (mc^2)^2[/tex]

where m is the rest mass of the proton and c is the speed of light.

According to the relativistic energy-momentum relation, the total energy of a particle is related to its momentum and rest mass by the equation:

[tex]E_total^2 = (pc)^2 + (mc^2)^2[/tex]

where p is the momentum of the particle.

Substituting the expression for the total energy of the proton in terms of its rest mass and the speed of light, we get:

[tex](2mc^2)^2 = (pc)^2 + (mc^2)^2[/tex]

Simplifying, we get:

[tex]4m^2c^4 = p^2c^2 + m^2c^4[/tex]

Rearranging and simplifying further, we get:

p = mc * sqrt(3)

Therefore, the momentum of the proton is mc times the square root of 3. Since the speed of the proton is related to its momentum by the equation:

[tex]p = mv / sqrt(1 - v^2/c^2)[/tex]

where v is the speed of the proton relative to the accelerator, we can solve for v to get:

[tex]v = c * sqrt(1 - 1/3) = c * sqrt(2/3)[/tex]

Therefore, the speed of the proton relative to the accelerator is approximately 0.82 times the speed of light.

Learn more about The speed

https://brainly.com/question/28224010

#SPJ4

The speed of the proton relative to the accelerator is 2.19 x 10⁸ m/s. in a certain particle accelerator, a proton has a kinetic energy that is equal to its rest energy.

Based on the given information, we can use the formula for kinetic energy:
KE = (1/2)mv²
where KE is the kinetic energy, m is the mass of the proton, and v is its velocity.
Since the proton's kinetic energy is equal to its rest energy (mc²), we can set the two equations equal to each other:
mc² = (1/2)mv²
Simplifying this equation, we can cancel out the mass on both sides:
c² = (1/2)v²
Solving for v, we can take the square root of both sides:
v = √(2c²)
Plugging in the value for the speed of light (c = 3.00 x 10⁸ m/s), we get:
v = √(2 x (3.00 x 10⁸)²)
v = 2.19 x 10⁸ m/s

To learn more about Proton Here:

https://brainly.com/question/30895149

#SPJ11