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3 years ago

What is Law of gravitation?

Physics

2 answers:

SpyIntel [72]3 years ago

7 0

universal gravitation is usually started as the particle extracts every other particle in the universe with the force which is directly proportional to the product of masses and inversely proportional to the square of the distance between their centres.

<h2>please mark my ans as BRAIN LIST</h2>

yKpoI14uk [10]3 years ago

4 0

Answer:

Newton's law of gravitation = statement that any particle of matter in the universe attracts any other with a force varying directly as the product of the masses and inversely as the square of the distance between them.

Explanation:

The equation for Newton's Universal Law of gravitation is F=GmM/r^2. Pls brainliest.

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An IGCSE student thinks it may be possible to identify different rocks (A, B and C) by measuring their

kherson [118]

Answer:

See the answer below

Explanation:

a. The volume in the first measuring cylinder reads 70 $cm^3$ while that of the second reads 95 $cm^3$ . Hence;

V1 = 70 $cm^3$

V2 = 95 $cm^3$

b. An object will always displace its own volume in a liquid. Hence:

Volume V of the rock sample = V2 - V1

= 95 - 70 = 25 $cm^3$

c. Mass of A = 102 g

Volume of A = 25 $cm^3$

Density = mass/volume

Hence, density of A = 102/25 = 4.08 g/ $cm^3$

8 0

3 years ago

An object that has the ability to do work has __________ energy. (4 points)

SpyIntel [72]

Answer:

c. potential

Explanation:

6 0

3 years ago

Read 2 more answers

The Earth rotates on its axis every __________ and revolves around the Sun every __________.

kvasek [131]

Earth rotates about this axis once each day (approximately 24 hours)
and revolves around the sun every year ..
Hope this helped ! :)

7 0

3 years ago

Read 2 more answers

Estimate the acceleration you subject yourself to if you walk into a brick wall at normal walking speed. (Make a reasonable esti

xenn [34]

Answer:

From certain assumptions that the walking speed is 2 m/s, and the stop time is 0.1 s the acceleration would be -20 m/s

Explanation:

Using the average acceleration formula:

$a=\frac{\Delta v}{\Delta t}$ where $\Delta v$ and $\Delta t$ are the changes in the speed and time respectively.

We have by assuming that the walking speed is 2 m/s and the stop time is 0.1s which is equal to the change in time during the stopping.

$\Delta v=v_f-v_i=0-2 m/s=-2 m/s$ , where $v_i,v_f$ are the initial speed and final speed respectively, and $\Delta t=0.1 s$

Plugging the previous in the average acceleration formula we get

$a=\frac{-2}{0.1}=-20\, m/s$ where the minus sign indicates an acceleration in the opposite direction of the motion (or in other word opposite to the speed's direction).

4 0

3 years ago

A 1,160 kg satellite orbits earth with a tangential speed of 7,446 m/s. if the satellite experiences a centripetal force of 8,95

Mkey [24]

The satellite is 8.02 × 10⁵ m above Earth's surface.

Let H be the height above the surface of the Earth; since we know that the satellite is rotating around the Earth due to the gravitational pull of the planet, we may assert

Procedure to solve:

F = mv²/R+H

H = mv²/F - R

H = (1160 × 7446²/8955 - 6.38 × 10⁶)

M = 8.02 × 10⁵ m

About centripetal force:

The force applied to an item that is in velocity of curved motion that is pointed toward the axis of rotation or the centre of curvature is known as a centripetal force.

The centripetal force formula is given as the product of mass (in kg) and tangential velocity (in meters per second) squared, divided by the radius (in meters) that implies that on doubling the tangential velocity, the centripetal force will be quadrupled. Mathematically it is written as:

F = mv²/r

Learn more about velocity here:

brainly.com/question/18084516

#SPJ4

6 0

2 years ago