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saw5 [17]
3 years ago
5

Which law of motion is this an example of?

Physics
1 answer:
Sati [7]3 years ago
3 0

Answer:Newton’s law also states that larger bodies with heavier masses exert more gravitational pull, which is why those who walked on the much smaller moon experienced a sense of weightlessness, as it had a smaller gravitational pull. To help explain his theories of gravity and motion, Newton helped create a new, specialized form of mathematics.

Explanation:

You might be interested in
A circular hoop of diameter d hangs on a nail. what is the period of its oscillations at small amplitude?
Misha Larkins [42]

m = mass of the circular hoop

r = radius of the hoop

I = moment of inertia of the hoop

moment of inertia of the hoop about the center of hoop is given as

I = m r²

k = distance of the point of suspension from center of mass = r

using parallel axis theorem

I' = moment of inertia of hoop about the point of suspension

I' = I + m k²

I' = m r² + m k²

I' = m r² + m r²

I' = 2 m r²

Time period of oscillation for the hoop is given as

T = 2π sqrt(I'/mgk)

T = 2π sqrt(2 m r²/(mgr))

T = 2π sqrt(2 r/g)

since 2r = diameter = d

T = 2π sqrt(d/g)



4 0
4 years ago
How large an expansion gap should be left between steel railroad rails if they may reach a maximum temperature 30.0°C greater th
irina [24]

Answer:

<em>1.2 cm</em>

Explanation:

<u>Thermal Expansion</u>

It's the tendency that materials have to change its size and/or shape under changes of temperature. It can be in one (linear), two (surface) or three (volume) dimensions.

The formula to compute the expansion of a material under a change of temperature from T_o to T_f is given by.

\Delta L=L_o.\alpha .(T_f-T_o)

Where Lo is the initial length and \alpha is the linear temperature expansion coefficient, which value is specific for each material. The data provided in the problem is as follows:

L_o=30\ m,\ T_f-T_o=30^oC,\ \alpha=13\times 10^{-6}\ ^oC^{-1}

Computing the expansion we have

\Delta L=30\times 13\times 10^{-6}(30)=0.0117=1.17\ cm

The expansion gap should be approximately 1.2 cm

6 0
3 years ago
train travels 1/4of its total distance over half of its time with a constant velocity of 5m/s. calculate the average velocity​
Katarina [22]

Let D be the total distance (say in meters) traveled by the train and T the time (say in seconds) it takes to do so. (Assume the train moves in a straight line in only one direction.) Then the average velocity of the train as it covers this distance is

v (ave) = D/T

We're told the train can traverse a distance of D/4 in a matter of T/2 seconds if it moves at a speed of 5 m/s. This means

D/4 = (5 m/s) (T/2)

⇒   5 m/s = 1/2 D/T

⇒   v (ave) = D/T = 10 m/s

3 0
3 years ago
. The earth revolves around the sun in the counterclockwise direction, completing one full revolution about every 365 days. In r
LuckyWell [14K]

Answer:

Explanation:

The earth makes in  365 day 1 revolution

The earth makes in 1 day     1 / 365 revolutions

1 / 365 revolution per day

n = 1 / 365 per day .

n is called frequency of revolutions .

Angular velocity = 2π n

= 2 π x 1 / 365

= .0172 radian / day

6 0
3 years ago
TRUE OR FALSE : Boyle’s law states that, as the pressure of a gas increases, the volume decreases.
White raven [17]

True, but only if the temperature of the gas doesn't change ...
which is pretty hard to manage when you're compressing it.

I think Boyle's law actually says something like

       (pressure) x (volume) / (temperature)  =  constant.

So you can see that if you want to say anything about two of the
quantities, you always have to stipulate that the statement is true
as long as the third one doesn't change.


6 0
3 years ago
Read 2 more answers
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