Pls Help
The acceleration of gravity on the
Moon is 1.62 m/s2. The mass of the
Moon is 7.35 x 1022 kg. From this
information, what is the radius of the
Moon?
[?] x 10 ^[?] m

Coefficient (green)
Exponent (yellow)
​

Answer:

The large piston would rise by [tex]10\; \rm cm[/tex] (which is equal to [tex]0.1\; \rm m[/tex].)

Explanation:

Convert the unit of the area of the larger piston to [tex]\rm cm^{2}[/tex]:

[tex]0.01\; \rm m^{2} = 100\; \rm cm^{2}[/tex].

If the pipe is cylindrical, the liquid that the smaller piston pushed into the pipe would be a cylinder:

Volume of liquid that the smaller piston pushed into the pipe:

[tex]\begin{aligned} & \text{Volume of Cylinder} \\ &= \text{Area of the Top of the Cylinder} \\ &\quad\quad \times \text{Height of Cylinder} \\ &= 20\; \rm cm^{2} \times 50\; \rm cm \\ &= 1000\; \rm cm^{3} \end{aligned}[/tex].

Unlike gas, the volume of a liquid (such as the one in this hydraulic press) at a given temperature tends to be fixed.

Therefore, when the small piston pushed [tex]1000\; \rm cm^{3}[/tex] of liquid into the pipe, liquid of the exact same volume ([tex]1000\; \rm cm^{3}\![/tex]) would appear under the larger piston and push the larger piston upwards.

Rearrange the equation to find the height by which the larger piston rises (same as the height of the [tex]1000\; \rm cm^{3}[/tex] liquid cylinder under the larger piston.)

[tex]\begin{aligned} & \text{Height of Cylinder} \\ &= \frac{\text{Volume of the Cylinder}}{\text{Area of the Top of the Cylinder}} \\ &= \frac{1000\; \rm cm^{3}}{100\; \rm cm^{2}} = 10\; \rm cm \end{aligned}[/tex].

Answer:

0.1 Kg

Explanation:

Please see attached photo for explanation.

In the attached photo, M is the mass of the metre rule.

From the attached photo,

Anticlock wise moment = M × 40

Clockwise moment = 0.4 × 10

Anticlock wise moment = Clockwise moment

M × 40 = 0.4 × 10

M × 40 = 4

Divide both side by 40

M = 4 / 40

M = 0.1 Kg

Thus, the mass of the metre rule is 0.1 Kg

Answer:

20 Volts

Explanation:

Ohm's Law and Power Equations

Ohm's law equation (formula): V = I × R and the power law equation

(formula): P = I × V. P = power, I or J = Latin: influare, international ampere, or intensity and R = resistance. V = voltage, electric potential difference Δ V or E = electromotive force (emf = voltage).

Voltage or volts E or V: volts V

Resistivity or resistance R: ohms Ω

Wattage or power P: watts W

Amperage or current I: amperes, amps A

Answer:

v = c / n      (n = 1 for air)

v = c / 1.33 = 3 * 10E8 m/s / 1.33 = 2.25 * 10E8 m/s

Answer:

5 V

Explanation:

V = IR

V = .25A * 20 Ohms = 5 V

Answer:

The conditions stop air from getting to the nail is the oil

Explanation:

Answer:

Centre of mass is the point at which the distribution of mass is equal in all directions, and does not depend on gravitational field. Centre of gravity is the point at which the distribution of weight is equal in all directions, and does depend on gravitational field.

Answer:

Centre of mass is the point at which the distribution of mass is equal in all directions, and does not depend on gravitational field.

Centre of gravity is the point at which the distribution of weight is equal in all directions, and does depend on gravitational field.

hope this helps you ☺️☺️

Answer:

the answer is B

Answer:

The structure of Germanium crystals will be destroyed at higher temperature. However, Silicon crystals are not easily damaged by excess heat. Peak Inverse Voltage ratings of Silicon diodes are greater than Germanium diodes. Si is less expensive due to the greater abundance of element.

Answer:

Torque = R X F = R * F sin theta

-f * 2R  will exert an equal opposite torque

-f * 2 = F sin theta

f = -F sin theta / 2

Answer:haha

Explanation:dont know

Answer:

it remains unchanged

Explanation:

it remains unchanged because the ice was already in there unless it was taken out then the water would have gone down.

Explanation:

Given that,

The force between two charges, [tex]F=2.2\times 10^{-4}\ N[/tex]

New force becomes, [tex]F'=4.4\times 10^{4} N[/tex]

We see that, the new force is 2 times more than the initial force.

The force is directly proportional to the product of forces and inversely to the square of the distance between charges.

It means, one of the charges gets doubled and it results in the doubling of force.

The new charge is 2 ×10⁸ times the old charge.The force is directly proportional to the product of charge;

The electric force between the two charges is directly propotional to the product of the charge and inversly propotional to the square of the distance between them.

The given data in the problem is;

q₁ is the megnitude of charge 1

q₂ is the megnitude of charge 2

k is the proportionality constant = 9 x 10⁹ Nm² / C²

r is the separated distance

F is the electric force=2.2  x 10-4 N

F' is the new electric force= 4.4 X 104 N.

The force is directly proportional to the product of charge;

[tex]\frac{F'}{F} =2 \times 10^8 \\\\ \frac{q_1 q_2}{q_1'q_2'} = 2 \times 10^8\\\\ \frac{q_1}{q_1'}= 2 \times 10^8 \\\\ q_1=2 \times 10^8 q_1'[/tex]

Hence the new charge is 2 ×10⁸ times the old charge.

To learn more about the electric force refer to the link;

https://brainly.com/question/1076352

Answer:

The solution is given below:

Explanation:

The computation of the speed is shown below

As we know that

Speed = distance ÷ time

where

distance is 2000 km

And, the time is 2.5 hours

SO, the speed is

= 2,000 ÷ 2.5

= 800 km/h

Now the distance would be the same i.e. 2,000 km

but the time is 2 hours

So, the speed is

= 2,000 km ÷ 2 hours

= 1,000 km/hr

The direction should be opposite to the first airplane

Answer:

[tex]T=8\times 10^{-19}\ s[/tex]

Explanation:

Given that,

The frequency of x-ray is, [tex]f=1.25\times 10^{18}\ Hz[/tex]

We need to find the time period of these x-rays. Let it is be T. We know that, the relation between f and T is given by :

T = 1/f

So,

[tex]T=\dfrac{1}{1.25\times 10^{18}}\\\\=8\times 10^{-19}\ s[/tex]

So, the time period of these x-rays is equal to [tex]8\times 10^{-19}\ s[/tex].

The time period of the electromagnetic wave is 8.0 × 10⁻¹⁹ seconds.

Given the data in the question;

Frequency; [tex]f =1.25 * 10^{18}Hz[/tex]

Time period; [tex]T =\ ?[/tex]

Time period is simply the time taken for one complete cycle of vibration to pass a given point.

It is expressed as:

[tex]T = \frac{1}{f}[/tex]

We substitute our value into the equation

[tex]T = \frac{1}{1.25 * 10^{18}Hz} \\\\T = \frac{1}{1.25 * 10^{18}s^{-1}}\\\\T = 8.0 * 10^{-19}s[/tex]

Therefore, the time period of the electromagnetic wave is 8.0 × 10⁻¹⁹ seconds.

Learn more: https://brainly.com/question/24094163

Answer:

A.) 355 m/s

B.) 0.71 m

C.) 500Hz

Explanation:

Given that a police car is traveling due east at a speed of 15.0 m/s relative to the earth. You are in a convertible following behind the police car. Your car is also moving due east at 15.0 m/s relative to the earth, so the speed of the police car relative to you is zero. The siren of the police car is emitting sound of frequency 500 Hz. The speed of sound in the still air is 340 m/s

a.) What is the speed of the sound waves relative to you?

Since the car is moving away from the observer, the relative velocity will be:

Relative velocity = 340 + 15

Relative velocity = 355 m/s

b.) What is the wavelength of the sound waves at your location?

Using the wave speed formula

V = frequency × wavelength

Make wavelength the subject of formula.

Wavelength = Velocity / frequency

Wavelength = 355/500

Wavelength = 0.71 m

c.) What frequency do you detect?

Fo = Fs ( C + V ) / ( C + v )

Fo = Fs

That is, the frequency of the observer will be equal to the frequency of the source.

Therefore, Fo = 500Hz

Answer:

1.625 Pounds Explanation:

Answer: The momentum principle depends on MASS and VELOCITY.

Explanation:

The momentum principle states that net force changes the the momentum of an object where momentum is the product of the MASS of the body and it's VELOCITY.

Thus, momentum = mass(kg) ×velocity( m/s)= kgm/s ( derived unit)

Also to determine the rate of change of momentum;

Mass=m, initial velocity =u, final velocity = V and time =t

Initial momentum = mu

Final momentum = mv

Change in momentum = mv - mu

= m( v- u)

Rate of change of momentum=

m( v -u)/t --> equation 1

But V = u + at

Hence, a = v -u/t

Substitute for v -u/ t in equation 1

F = Kma, where k is constant and has the value of 1.

Therefore F = ma

Newton is the SI unit if force. It is defined as the force which gives a mass of 1kg an acceleration of 1 m/s².

IMPULSE is defined as the change of momentum of a body (mv-mu) or the product of force and time.

Thus impulse = force × time = m (v-u)

The unit is Ns ( Newton seconds) which is the same as change in momentum.

Answer:

98.6 degrees Fahrenheit.

Explanation:

Human body temperature is 37.0 degrees Celsius or 98.6 degrees Fahrenheit.

Answer:

What is the kinetic energy of a bicycle with a mass of 14 kg traveling at a velocity of 3 m/s? Physics ... K=12mv2=12×14 kg × (3 m/s)2=63 Joule.

1 answer  

63 Joule Explanation: K=12mv2=12×14 kg × (3 m/s)2=63 Joule

Explanation:

K=12mv2=12×14 kg × (3 m/s)2=63 Joule.

63 Joule Explanation: K=12mv2=12×14 kg × (3 m/s)2=63 Joule

Answer:

No

Explanation:

Recall that the hierarchy of wavelength color from minimum wavelength to maximum wavelength is:

[tex]V < I < B < G < Y < O < R;[/tex] and

[tex]E \ \alpha \ \dfrac{1}{\lambda}[/tex]

As a result, blue light has a higher energy level than green and red light.

As a result, the surface glows due to the blue LED. The green LED, on the other hand, would not allow the surface to glow as much as the red LED, which has a lower energy level when compared to the green light. As a result, the red LED would not allow the surface to glow as well.

Answer:

Energy and frequency

Explanation:

Answer:

1.60 x 10^-18 J

Explanation:

we know that, Work done = Voltage x Charge,

hence we get as,

Energy = V x Q

E = 2 x (8.0 * 10^-19)

==> E = 16 x 10^-19

=> E = 16/10 x 10^-18

==> E = 1.60 x 10^-18 J

Answer:

a)[tex]F_{net} =275000N[/tex]

b)[tex]F_{net}'= 386718.75N[/tex]

Explanation:

From the question we are told that:  

Man's Mass [tex]M=75kg[/tex]

Speed of man [tex]V_m=5.5m/s[/tex]

a)

Landing time [tex]t_l=1.5ms[/tex]

Generally the equation for average net force F_{ net}  is mathematically given by

[tex]F_{net} = 75 *5.5 /(0.0015) N[/tex]  

[tex]F_{net} =275000N[/tex]

b)

Landing time [tex]t=0.08s[/tex]

Generally the equation for average net force[tex]F_{ net}[/tex]  is mathematically given by

[tex]F_{net}' = impulse /time \\ F_{net}'= \frac{m * u}{t}[/tex]

[tex]F_{net}'= \frac{75 * 5.5}{0.08}[/tex]

[tex]F_{net}'= 386718.75N[/tex]

Given

mass (m) = 1 kg

velocity (v) = 10 m/s

kinetic energy ( ke) = ?

,we know

K.E =1/2 m v²

= 1/2 * 1 * 10²

= 100/2

=50 joule

hope it helps :)

The kinetic energy of a 1 kg pie if it is thrown at 10 m/s is 50 joule.

Energy due to motion of the body  is kinetic energy. Whether an object is moving vertically or horizontally, it contains kinetic energy.

Kinetic energy can take many different forms, including vibrational (the energy resulting from vibrational motion), rotational (the energy resulting from rotational motion), and translational energy (the energy due to motion from one location to another). To keep things straight-forward, we'll concentrate on translational kinetic energy.

An object's mass (m) and speed (v) are two factors that affect how much translational kinetic energy it has (from this point on, the term "kinetic energy" will refer to translational kinetic energy). The kinetic energy (K.E) of an object is denoted by the equation below.

K.E = (1÷2)×m×v²

where m = mass of object

v = speed of object

Given that in question  1 kg pie is thrown at  the velocity of 10 m/s,

K.E = (1÷2)×1×(10)²

K.E = 50 joule

So the kinetic energy of the pie is 50 joule.

To learn more about kinetic energy refer to the link:

brainly.com/question/12669551

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Explanation:

B. the motion of an object along a curved path

hope it helps.

Answer:

the orbit of a satellite around a central body

Explanation:

hope that helps :)

Answer:

True

Explanation:

It is true that the real definition of lenz's law in magnetism is the current is induced in the closed conducting loop in such a direction that the magnetic field induced by this current opposes the change in the flux through the loop.

This means that induced current opposes the very cause that produces it.