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3 years ago

14

How much force is required to accelerate a 5 kg object at 5 m/s^2?

1 answer:

kramer3 years ago

3 0

Answer:25n

Explanation:

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Why is iron significant to understanding how a supernova occurs?

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<h3><u>Answer;</u></h3>

Iron cannot release energy by fusion.

<h3><u>Explanation;</u></h3>

Supernovae are some of the most magnificent events in the cosmos. When a massive star dies, it can result in a spectacular explosion many times that of man's total nuclear arsenal.
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Answer:

80 min

Explanation:

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___ is the rate of change of velocity of an object? Formula: ___

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<u>Acceleration</u> is the rate of change of velocity of an object.

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3 years ago

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Can someone help me with this. I'm not really sure if the right answer is c.

taurus [48]

It might be c I'm not sure either. Hope I helped

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3 years ago

A glider with mass m = 0.230 kg sits on a frictionless horizontal air track, connected to a spring with force constant k = 4.50

loris [4]

Answer

given,

mass of glider = 0.23 Kg

spring constant = k = 4.50 N/m

spring stretched to 0.130 m

The springs potential energy =

$U = \dfrac{1}{2}kx^2$

$U = \dfrac{1}{2}\times 4.5 \times 0.13^2$

U = 0.038 J

at x = 0,the only energy will be kinetic .

$\dfrac{1}{2}mv^2=0.038$

$\dfrac{1}{2}\times 0.23 \times v^2=0.038$

v² = 0.3304

v = 0.575 m/s

displacement of the glider

using conservation of energy

$\dfrac{1}{2}mv^2=\dfrac{1}{2}kx^2$

$x =v\sqrt{\dfrac{m}{k}}$

$x =3\times \sqrt{\dfrac{0.23}{4.5}}$

x = 0.678 m

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3 years ago