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Nat2105 [25]
3 years ago
7

How does friction affect motion? (Please explain in an easy way and no plagiarism please)

Physics
1 answer:
frez [133]3 years ago
5 0
Friction causes resistance against a moving object. It can cause an object to slow down, or stop when there’s enough friction…. I hope this helps
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A train starts from rest and accelerates uniformly, until it has traveled 3.7 km and acquired a velocity of 26 m/s. What is the
bogdanovich [222]
We have:
s=3,7km (3700m)
u=0
v=26m/s
a=
t=
We look up for a formula to solve for a:
v²=u²+2as u²=0 so
v²=2as
(26m/s)²=2a3700m
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7 0
3 years ago
The amount of power required to move an object can be increased without changing the
VLD [36.1K]

Answer:

Yes it is possible to increase the power with out changing the amount of work.

Explanation:

The power is defined by the amount of power divided by the time. This time is the one needed to do the work. We can understand this issue by analyzing an example with numeric values.

Work = 500 [J]

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Power will be:

Power=\frac{500}{5} \\Power=100 []watt]\\

Now if we change the time to 2 seconds:

Power = 500 [J]/2[s]\\Power = 250 [watt]\\

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3 0
4 years ago
A block of wood 3.0 cm on each side has a mass of 27g. what is the density of this block?
torisob [31]
<span>The volume of a cube is given by s^3. So the volume of this block is 3cm x 3cm x3 cm = 27 cm^3. density = mass/volume =27 g / 27 cm^3 = 1 g/cm^3.</span>
4 0
3 years ago
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Which statement correctly lists the four forces from the weakest to the strongest?
harkovskaia [24]
The strongest of the natural forces is Strong Nuclear, followed by Electromagnetic, then Weak Nuclear and lastly Gravitational.
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Answer C)
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Explanation:

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