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3 years ago

1.) if you are sitting still are you accelerating? How do you know?

Physics

1 answer:

castortr0y [4]3 years ago

5 0

yes. gravity is working on you and everything on you.

also earth is rotating

no not in respect ofimmediate surroundings

object could move at constant velocity = no change in either magnitude or direction

change of position "proves" this

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The gravitational field on the surface of the earth is stronger than that on the surface of the moon. If a rock is transported f

topjm [15]

Answer: Weight only.

Explanation: Mass is a measure of the amount of matter in an object. Weight is a measure of the gravitational force exerted on the material in a gravitational field. Mass and weight are proportional to each other, with the acceleration due to gravity as the proportionality constant.

If a rock is transported from the moon to the earth, the mass is constant for the object but the weight will depends on the locations of the object. The gravitational acceleration would change because the radius and mass of the Moon is different from the Earth.

Thus, the object (rock) has <em>mass, m</em> both on the surface of the Earth and the surface of the Moon; but it will <em>weight</em> much less on the surface of the Moon as the Moon's surface gravity is 1/6 of the Earth.

4 0

3 years ago

1.) if the total momentum for a system is the same before and after the collision, we say that momentum is conserved. if momentu

gogolik [260]

From the law of the conservation of energy; the ratio of the total kinetic energy after the collision to the total kinetic energy before the collision must be 1.

<h3>What is momentum?</h3>

The term momentum is the product of mass and velocity. The principle of conservation of linear momentum states that total momentum before collision must be the same as the total momentum after collision thus the ratio of the total momentum after the collision to the total momentum before the collision must be 1.

Also, from the law of the conservation of energy; the ratio of the total kinetic energy after the collision to the total kinetic energy before the collision must be 1.

Learn more about momentum:brainly.com/question/24030570

#SPJ1

6 0

2 years ago

What is the net work done on the 20kg block while it moves the 4 meters?

Vinil7 [7]

Answer:

The answer to your question is 784.8 J. None of your answer, did you forget some information?

Explanation:

Data

mass = 20 kg

distance = 4 m

work = ?

Formula

Work = force x distance

Force = mass x gravity

Process

1.- Calculate the weight of the block

Weight = 20 x 9.81

Weight = 196.2 N

2.- Calculate the work done

Work = 196.2 x 4

Work = 784.8 J

5 0

4 years ago

A microwave oven operates at 2.50 GHzGHz . What is the wavelength of the radiation produced by this appliance? Express the wavel

sattari [20]

Answer:

The wavelength is $\lambda = 1.2 * 10^8 nm$

Explanation:

From the question we are told that

The frequency of operation of the microwave is $f = 2.50 GHz = 2.50 *10^{9} \ Hz$

Generally the wavelength is mathematically represented as

$\lambda = \frac{c}{f}$

Here c is the speed of light with value $c = 3.0 *10^{8} \ m/s$

$\lambda = \frac{3.0 *10^{8}}{ 2.50 *10^{9}}$

=> $\lambda = 0.12 \ m$

converting to nanometer

$\lambda = 1.2 * 10^8 nm$

6 0

3 years ago

5 different energy stores

OLga [1]

Answer: There are seven main stores of energy: magnetic

internal (thermal)

chemical

kinetic

electrostatic

elastic potential

gravitational potential

Explanation: So you can have any of these

7 0

3 years ago