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3 years ago

How much force is needed to accelerate a 20 kg mass at a rate of 4 m/s to the second power?

Physics

2 answers:

LekaFEV [45]3 years ago

8 0

Answer:

80 N

Explanation:

mass (m) = 20kg

acceleration (a) = 4m/s^2

Force (F) = ?

.°. F = ma

= 20 × 4 = 80

.°. F = 80 N

Thus, The Force is needed to accelerate a 20 kg mass at a rate of 4 m/s^2 is 80 N

-TheUnknownScientist

dusya [7]3 years ago

6 0

Answer:

So 55 Newtons are needed.

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A closed system’s internal energy changes by 178 J as a result of being heated with 658 J of energy. The energy used to do work

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Answer:

480J

Explanation:

Using the formula:

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3 years ago

Which of the following is a negative environmental impact of using solar

saw5 [17]

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Explanation:

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3 years ago

he membrane that surrounds a certain type of living cell has a surface area of 6.0 x 10-9 m2 and a thickness of 1.6 x 10-8 m. As

k0ka [10]

Answer:

$1.54481175\times 10^{-12}\ C$

Explanation:

$\epsilon_0$ = Permittivity of free space = $8.85\times 10^{-12}\ F/m$

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Charge is given by

$Q=CV\\\Rightarrow Q=k\epsilon\dfrac{A}{d}V\\\Rightarrow Q=5.4\times 8.85\times 10^{-12}\times \dfrac{6\times 10^{-9}}{1.6\times 10^{-8}}\times 86.2\times 10^{-3}\\\Rightarrow Q=1.54481175\times 10^{-12}\ C$

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3 years ago