Assume the two radii of the thin convex lens surfaces to be equal for each of the two convex lenses used in this experiment and the index of refraction of their glass to be 1.5. From the relationship given in equation, determine the radius of curvature for each of the two thin convex lenses that you need

The area οf the clοud that was struck by lightning had a negative charge, sο, οptiοn (d) is cοrrect.

The negatively charged atοm's electrοns are respοnsible fοr this. An atοm's tοtal negative charge, which is prοduced by all οf its electrοns, cοunteracts the pοsitive charge οf the prοtοns in the atοmic nucleus.

Prοtοns and electrοns, which functiοn as charge carriers, frequently carry bοth pοsitive and negative electric charges. By mοving charges, energy is prοduced. Charge—alsο referred tο as electric charge, electrical charge, οr electrοstatic charge—is a prοperty οf a unit οf matter in physics and is denοted by the letter q.

Therefοre, The area οf the clοud that was struck by lightning had a negative charge, sο, οptiοn (d) is cοrrect.

Learn more about electrons from the given link.

https://brainly.com/question/13998346

#SPJ1

The displacement vector for a is given below:

A=4.15m, θA=26.5o

Ax=AcosθA = 4.15cos26.5 = 3.7 m

Ay=AsinθA = 4.15sin26.5 = 1.85 m

B= 4.15m, θB =26.5o

Bx=BcosθB = 4.15cos90= 0.0 m

By=BsinθB = 4.15sin90= 4.15 m

a)

(A+B)x= Ax+ Bx= 3.7 – 0.0 = 3.7 m

(A+B)y = Ay+ By= 1.85 + 4.15 = 6.0 m

(A+B)=sqrt[(3.7)^2+(6.0)^2] = 7.05 m

Φ= tan^-1[((A+B)y)/( (A+B)x)] = tan^-1(6.0/3.7) = 58.34o…….counterclockwise from +X axis

b)

(A-B)x= Ax- Bx= 3.7 – 0.0 = 3.7 m

(A-B)y = Ay- By= 1.85 - 4.15 = -2.3 m

(A-B)=sqrt[(3.7)^2+(2.3)^2] = 4.36 m

Φ= tan^-1[((A-B)y)/( (A-B)x)] = tan^-1(-2.3/3.7) = -31.9o = 360-31.9 = 328.1o…….counterclockwise from +X axis

c)

(B-A)x= Bx- Ax= 0.0-3.7 = -3.7 m

(B-A)y = By- Ay= 4.15-1.85 = 2.3 m

(B-A)=sqrt[(-3.7)^2+(-2.3)^2] = 4.36 m

Φ= tan^-1[((B-A)y)/( (B-A)x)] = tan^-1(2.3/-3.7) = -31.9o = 180-31.9 = 148.1o…….counterclockwise from +X axis

d)

(A-2B)x= Ax- 2Bx= 3.7 – 2*0.0 = 3.7 m

(A-2B)y = Ay- 2By= 1.85 – 2*4.15 = -6.45 m

(A-2B)=sqrt[(3.7)^2+(-6.45)^2] = 7.44 m

Φ= tan^-1[((A-2B)y)/( (A-2B)x)] = tan^-1(-6.45/3.7) = -60.16o = = 360-60.16 = 229.84o…….counterclockwise from +X axis

Read more about displacement vectors here:

https://brainly.com/question/13416288

#SPJ1

Answer: When two plates are moving away from each other, we call this a divergent plate boundary. Along these boundaries, magma rises from deep within the Earth and erupts to form new crust on the lithosphere. Most divergent plate boundaries are underwater and form submarine mountain ranges called oceanic spreading ridges.

Explanation:

I HOPE THIS HELPED YOU I AM OPEN IF YOU WANTS ANSWERS GOOD LUCK BY THE WAY!

In closed Loop Control System,the input to the system is the desired set-point or reference value.In oen Loop Control System,the input to the system is the desired set-point or reference value.

Value is the importance, worth, or usefulness of something. It is the importance an individual or group places on an object, service, or idea. Value is determined by how much an individual or group is willing to give up to obtain that object, service, or idea. Value can also refer to the monetary worth of an object, service, or idea.

To learn more about value

https://brainly.com/question/17563681

#SPJ1

The kinetic energy is related to the motion of the marble, but the potential energy is related to its position. The marble's potential energy is transformed into kinetic energy as it slides down the ramp from the top.

The stone has potential energy when it is at the top of the ramp because gravity will lead it to fall. The term for this is gravitational potential energy. The stone is freed, and the potential energy transforms into kinetic energy as it moves. Kinetic energy is the term used to describe a moving object.

To learn more about potential energy visit:

brainly.com/question/12807194

#SPJ1

The scale reading when the elevator is accelerating can be found using the following formula:

Weight in Elevator = Mass × (Acceleration of Gravity + Acceleration of Elevator)

where Weight in Elevator is the scale reading, Mass is the mass of the person, Acceleration of Gravity is the acceleration due to gravity (9.81 m/s^2), and Acceleration of Elevator is the acceleration of the elevator.

Using this formula, we can solve for the mass of the person:

Weight in Elevator = Mass × (Acceleration of Gravity + Acceleration of Elevator)

598.9 N = Mass × (9.81 m/s^2 - 1.1 m/s^2)

Mass = 65 kg

Now, when the elevator is not moving, the weight of the person will be equal to their mass multiplied by the acceleration due to gravity, which is:

Weight on Ground = Mass × Acceleration of Gravity

Weight on Ground = 65 kg × 9.81 m/s^2

Weight on Ground = 637.65 N

Therefore, the scale reading when the elevator is not moving would be 637.65 Newtons.

Learn more about acceleration from

https://brainly.com/question/460763

#SPJ1

Answer:

The first law of thermodynamics, also known as the law of conservation of energy, states that energy cannot be created or destroyed, only transferred or transformed from one form to another. In other words, the total energy of a closed system and its surroundings remains constant.

When applying this law to a system/surrounding model, the energy exchanged between the system and its surroundings can take different forms, such as heat, work, or a combination of both. For example, if a gas is compressed in a piston, work is done on the gas by the surroundings, increasing the internal energy of the gas. Alternatively, if a gas is heated, energy is transferred to the gas from the surroundings, increasing the internal energy of the gas.

Overall, the first law of thermodynamics serves as a fundamental principle in the study of thermodynamics, allowing us to analyze and predict energy transfers and transformations in various physical and chemical systems.

Explanation:

Answer:

1.9 m/s

Explanation:

The runner will take a full day to complete the race, assuming he maintains the same pattern of slowing down by half the previous hour's distance each hour.

We can approach this problem by using a formula for the sum of an infinite geometric series, since the distances covered by the runner in each hour form a geometric sequence with a common ratio of 1/2. The formula is:

S = a / (1 - r),

where S is the sum of the series, a is the first term, and r is the common ratio.

In this case, the first term a is 12 miles, and the common ratio r is 1/2. We want to find the total distance S covered by the runner over the entire 24-mile race, so we can set:

S = 12 / (1 - 1/2) = 24

This means that the runner will cover the remaining 12 miles in the final hour, and so the total time taken to finish the race will be:

1 + 1 + 1 + ... (24 times) = 24 hours

So, the runner will take a full day to complete the race, assuming he maintains the same pattern of slowing down by half the previous hour's distance each hour.

learn more about distance: https://brainly.com/question/26046491

#SPJ1

Answer:

Trials 1-10 were bigger than 11-20, so it is different.

Explanation:

brainlyist pls

Answer:

aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

Explanation:

Answer:

the answer is A) $5.76.

We found in the previous problem that the air conditioner uses 32 kWh per day. To find the cost, we multiply the number of kWh by the cost per kWh:

32 kWh/day x $0.18/kWh = $5.76/day

So, it costs $5.76 per day to run the air conditioner.

Therefore, the answer is A) $5.76.

Answer:

See below.

Explanation:

The list of given we have:

(a) We are asked to find the acceleration of the system if the system is released from rest.

We can simply distinguish between the forces operating on the two masses to provide an answer. We must first determine the force affecting the masses. Hence, the only force acting on mass 2 is the gravitational force since it is suspended from the cord.

[tex]Fg=m_2g[/tex]

[tex]F_g=(4.5Kg)(9.8m/s^2)[/tex]

[tex]F_g=44.1N[/tex]

while for the mass 1 we have the static frictional force,

[tex]f_s=u_sN[/tex]

[tex]f_s=(0.60)(11.0Kg)(9.8m/s^2)[/tex]

[tex]f_s=64.68N[/tex]

We may infer that if the system is released from rest, it does not move at all since the static frictional force acting on mass 1 was greater than the gravitational force acting on mass 2, which means the system's acceleration must be equal to [tex]a=0m/s^2[/tex].

(b) We are asked to find the acceleration of the system if the mass 2 moves downward.

For this question, we must draw a free-body diagram (attachment #1).

Since we are able to draw a free-body diagram and identify the force(s) acting on the masses, we can find the acceleration of the system using the equation of Newton's second law, so we have:

[tex]F_\text{net}=m_{sys} a[/tex]

[tex]a=\frac{F_{net}}{m_{sys}}[/tex]

where the [tex]F_{net}[/tex] is the sum of force(s) acting on the system and [tex]m_{sys}[/tex] is the total mass of the system,

[tex]a=\frac{Fg_2-T+T-f_k}{m_1+m_2}[/tex]

[tex]a=\frac{F_g2 - f_k}{m_1+m_2}[/tex]

[tex]a=\frac{m_2g-u_km_1g}{m_1+m_2}[/tex]

substituting all of the given

[tex]a=\frac{(4.5Kg)(9.8m/s^2)-(0.30)(11.0Kg)}{11.0Kg-4.5Kg}[/tex]

[tex]a=\frac{40.8Kgm/s^2}{6.5Kg}[/tex]

[tex]a=6.2769[/tex]

We can conclude that if the mass 2 is going downward then the acceleration of the system would be [tex]6.2769m/s^2.[/tex]

The initial momentum of the system before the collision can be calculated as: p1 = m1v1 + m2v2 = -6 kgm/s

After the collision, the two objects stick together and move with a final velocity of v. The final momentum of the system can be calculated as:

p2 = (m1 + m2)v

p2 = 3v

Since momentum is conserved, we can equate p1 and p2 to get:

p1 = p2

-6 kgm/s = 3v

v = -2 m/s

Therefore, the final velocity of the combined object after the collision is -2 m/s.

Momentum conservation is a fundamental principle in physics that states that the total momentum of a closed system remains constant in the absence of external forces. In other words, the rate of an object or a system of things cannot change unless an external force acts on it.

Yes, momentum is a vector quantity that represents the product of an object's mass and velocity, and it describes the tendency of an object to continue moving in the same direction and at the same speed unless acted upon by an external force.

To learn more about speed, visit here:

https://brainly.com/question/28224010

#SPJ1

The thermal cοnductivity οf the material is 0.024 W/(m·K).

We can use the fοrmula fοr heat transfer thrοugh a material with a temperature difference and knοwn surface area:

Q/t = kA(T1-T2)/d

where Q/t is the rate οf heat transfer (pοwer) prοvided by the electric heater,

k is the thermal cοnductivity οf the material,

A is the surface area οf the cοntainer,

d is the thickness οf the walls,

T1 is the temperature inside the cοntainer, and

T2 is the temperature οutside the cοntainer.

Plugging in the given values:

Q/t = 10.0 WA = 1.10 m²d = 0.04 mT1 - T2 = 13.0 °C

We can rearrange the fοrmula tο sοlve fοr k:

k = Qtd / (A*(T1-T2))

Plugging in the values and cοnverting units tο SI units:

k = (10.0 W)(1 s)(0.04 m) / (1.10 m² * 13.0 K) = 0.024 W/(m·K)

Therefοre, the thermal cοnductivity οf the material is 0.024 W/(m·K).

To learn more about thermal conductivity follow the given link:

https://brainly.com/question/14919402

#SPJ1

Answer: 345.15°C

Explanation:

The average kinetic energy of the molecules in an ideal gas is proportional to its temperature in Kelvin scale. So, if the average kinetic energy doubles, then the temperature must also double.

The initial temperature of the gas is 36°C = 36 + 273.15 = 309.15 K.

Doubling the temperature, we get:

Final temperature = 2 × 309.15 K = 618.3 K

Converting back to Celsius scale, we get:

Final temperature = 618.3 - 273.15 = 345.15°C

Therefore, the final temperature of the gas is 345.15°C.

Matching the government activities to the different fiscal policies.

Contractionary Fiscal Policy:

budget indicates a surplus

government is spending less than what it earns

Expansionary Fiscal Policy:

government is spending more on infrastructure development

budget indicates a deficit

government is spending more than what it earns

When the government is spending less than what it earns, it has a budget surplus. This indicates that the government is collecting more revenue than it is spending. This is an example of a contractionary fiscal policy because it reduces the amount of money circulating in the economy, which can help control inflation.

When the government is spending more than what it earns, it has a budget deficit. This indicates that the government is spending more money than it is collecting in revenue. This is an example of an expansionary fiscal policy because it injects more money into the economy, which can stimulate economic growth.

When the government is spending more on infrastructure development, it is an example of an expansionary fiscal policy because it increases government spending and stimulates economic growth.

Learn more about fiscal policy here:https://brainly.com/question/6583917

#SPJ1

Answer:

An object can become positively charged by losing electrons, but it cannot become positively charged by gaining protons. This is because the charge on an object depends on the balance of protons and electrons it has. Protons have a positive charge, while electrons have a negative charge. So, when an object gains electrons, it becomes negatively charged because it now has more negative charges than positive charges. On the other hand, when an object loses electrons, it becomes positively charged because it now has more positive charges than negative charges.

However, protons cannot be gained or lost easily because they are tightly bound within the atomic nucleus of an atom, and they are not free to move around like electrons. Therefore, the only way for an object to become positively charged is to lose electrons, not by gaining protons.

Explanation:

The direction of the magnetic field at point P, West of the wire, would be to the South.

The right-hand rule can be used to determine the direction of the magnetic field around a current-carrying wire.

If the thumb of the right hand is pointed in the direction of the current (out of the page), and the fingers wrap around the wire in the direction of the magnetic field, then the palm of the right-hand points in the direction of the magnetic field.

Using this rule, we can determine that the magnetic field at point (P), located west of the wire, will be directed to the south.

More on the right-hand rule can be found here: https://brainly.com/question/3930132

#SPJ1

Answer:

44,640 ft

Explanation:

assuming the rocket started from rest, then v₀ = 0

2 min = 120 s

Δx = v₀t + 1/2at²

Δx = 0 + 1/2(6.2 ft/s²)(120 s)² = 44,640 ft ≈ 8.45 mi

The displacement has a 3 m magnitude and is moving in the opposite direction as the external force, which is pushing backwards.

With the provided information for the 4 kilogramme mass, we can get the spring constant. The displacement of a 1.5 kg mass is then determined using the formula x = F/k. The work needed to stretch a spring x distances from its equilibrium position is W = 12kx2.

We can use the following formula to determine the force a spring exerts:

F = -kx

The magnitude of the force exerted by the spring is:

F = -kx

-600 N = -200 N/m * x

Solving for x, we get:

x = 3 m

To know more about external force visit:-

https://brainly.com/question/16186958

#SPJ1

The final speed of the roller coaster is 454.6 m/s.

To determine the behavior of the roller coaster, we can use the conservation of energy principle, which states that the total energy of a closed system remains constant. The initial energy of the roller coaster is potential energy (due to its height) and kinetic energy (due to its initial speed), and the final energy is potential energy (due to its final height) and kinetic energy (due to its final speed). Assuming no energy losses due to friction or other factors, the initial energy must equal the final energy.

The potential energy of the roller coaster at height h is given by:

Ep = mgh

where m is the mass of the roller coaster, g is the acceleration due to gravity (9.81 m/s²), and h is the height of the roller coaster.

At the top of the roller coaster (where h = 100 m), the potential energy of the roller coaster is:

Ep = (1000.0 kg)(9.81 m/s²)(100.00 m) = 981000 J

The kinetic energy of the roller coaster at the initial speed vi is given by:

Ek = (1/2)mv²

where m is the mass of the roller coaster, and v is its speed.

At the beginning of the roller coaster (where vi = 10.00 m/s), the kinetic energy of the roller coaster is:

Ek = (1/2)(1000.0 kg)(10.00 m/s)² = 50000 J

The total energy of the roller coaster at the beginning of the ride is:

Etotal = Ep + Ek = 981000 J + 50000 J = 1031000 J

At the bottom of the roller coaster, all of the potential energy has been converted to kinetic energy, and the roller coaster has reached its maximum speed. Therefore, the kinetic energy at the bottom of the roller coaster is:

Ek = Etotal - Ep = 1031000 J - 0 J = 1031000 J

The final speed of the roller coaster, vf, is found using the equation:

Ek = (1/2)mv²

Solving for vf:

vf = √(2Ek/m) = √(2(1031000 J)/(1000.0 kg)) = 454.6 m/s

Therefore, the final speed of the roller coaster is approximately 454.6 m/s.

Learn more on final speed here: https://brainly.com/question/25905661

#SPJ1

The complete question is:

a frictionless roller coaster is given an initial speed of vi=10.00m/s , at the initial height h=100:00m,has a mass m=1000.0kg. what is the roller coaster's final speed?

Answer:

True

False

True

True

True

Explanation:

Light is measured by its wavelength (in nanometers). It is usually characterized by the Greek symbol λ. Visible light is usually defined as having wavelengths in the range of 400–700 nanometers (nm) or one billionth of a meter.

Light travels faster in vacuum than any other medium. This is because there is no obstruction in vacuum for the propagation of light and thus, the refractive index of vacuum is the lowest.

Brightness is used to describe how bright somthing is

The shorter the wavelengths and higher the frequency corresponds with greater energy. So the longer the wavelengths and lower the frequency results in lower energy.

In order from highest to lowest energy, the sections of the EM spectrum are named: gamma rays, X-rays, ultraviolet radiation, visible light, infrared radiation, and radio waves.

[tex]75 = 6 \times \frac{?}{?} \times \frac{?}{?} [/tex]

A normative approach to lifespan development involves studying and comparing the typical patterns of development and behavior across different individuals or groups of people at various ages. Here are some benefits of using this approach:

Identifying developmental milestones: A normative approach helps to identify the typical milestones and achievements that people reach at different ages, such as crawling, walking, talking, and reading. This can help parents, educators, and healthcare professionals to monitor and assess a child's development and provide appropriate support and interventions when necessary.

Understanding individual differences: While a normative approach focuses on typical patterns of development, it also recognizes that there are individual differences in development and behavior. By comparing people's development to the norm, we can better understand how and why some individuals may differ from the norm, such as in terms of their physical, cognitive, or socioemotional development.

Informing public policies and interventions: A normative approach can help to inform public policies and interventions that support healthy development across the lifespan. For example, knowledge about the typical milestones of development can inform early childhood education programs, while information about the typical age-related changes in cognition and memory can inform policies related to employment and retirement.

they would be affected because herbivores and omnivores which rely on plants to survive would not recieve the nutrition necessary because for the plant to create food it would need sunlight

Flashlight: The flashlight typically uses multiple batteries, arranged in series to provide a higher voltage output.

In continuation, The number and type of batteries used in a flashlight can vary depending on the model, but a common arrangement is to use two or three 1.5V AA batteries. The batteries are connected in series, with the positive end of one battery connected to the negative end of the next battery, and so on.

Secondly, 2-way radio:

A 2-way radio also typically uses multiple batteries, arranged in series to provide a higher voltage output. Again, the number and type of batteries used can vary depending on the model, but a common arrangement is to use four or six 1.5V AA batteries. The batteries are connected in series, with the positive end of one battery connected to the negative end of the next battery, and so on.

Therefore, Note that the arrangement of batteries in series increases the total voltage produced by the batteries.

Read more about battery  here:

https://brainly.com/question/14883923

#SPJ1

When a charged object is at rest, the electric field lines emanating from it are radially symmetric and point outward in all directions, forming a pattern that depends on the magnitude and sign of the charge. If the charged object is set in motion, it creates a changing electric field that propagates outward from the object at the speed of light.

The direction of magnetic field lines is depicted using arrows or lines that indicate the direction of the magnetic field at each point in space. The convention for drawing magnetic field lines is that they always form closed loops, and the direction of the field is tangential to the bar at each point.

Yes, electric fields can affect magnetic fields and vice versa. Electric and magnetic fields are intimately related and form two sides of the same coin, as described by Maxwell's equation of electromagnetism.

To learn more about magnet, visit here:

https://brainly.com/question/2841288

#SPJ1

Answer:

A spring scale measures weight or force when an object is hung from its hook.

Explanation: