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2 years ago

George is pushing a box horizontally on the floor. The box has a mass of 10 kg and as a

Physics

1 answer:

Anni [7]2 years ago

8 0

Answer:

20 N

Explanation:

The relevant formula is ...

F = ma . . . . m = mass, a = acceleration

F = (10 kg)(2 m/s²) = 20 kg·m/s² = 20 N

George is applying force of 20 N.

_____

<em>Additional comment</em>

In 2 m/s², m is used to stand for the unit 'meters'. It should not be confused with the formula m, which stands for mass.

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A 9 V battery produces a current of 18 amps. What is the resistance?

artcher [175]

<h2> $\bf{ \underline{Given:- }}$ </h2>

$\sf• \: Battery \: Voltage \: (V) = 9 \: v$

$\sf• \: Current \: (I) = 18 \: Amps.$

$\\$

<h2> $\bf{ \underline{To \: Find :- }}$ </h2>

$\sf• \: The \: Resistance.$

$\\$

$\huge\bf{ \underline{Solution :- }}$

$\bf \red{ \bigstar{ \: Formula \: of \: Resistance \: (R) = \frac{V}{I}}}$

$\rightarrow \sf R = \frac{9}{18}$

$\rightarrow \sf R = \frac{1}{2}$

$\rightarrow \sf R = 0.5$

$\\$

<h3> $\bf \purple{Therefore, \: the \: \: resistance \: \: is \: \: 0.5 \: Ω \: .}$ </h3>

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3 years ago

A horizontal force of 93.7 N is applied to a 42.5 kg crate on a rough, level surface. If the crate accelerates at 1.03 m/s2, wha

vovangra [49]

Answer:

49.925N

Explanation:

According to newton's second law of motion:

$\sum Fx = ma_x$

$\sum Fx$ is the sum of force along the x component

m is the mass of the crate

ax is the acceleration

$Fm - Fk = ma_x$

Fk is the magnitude of the force of kinetic friction

Given

Fm = 93.7

m = 42.5kg

a = 1.03m/s²

Substitute into the formula:

$93.7 - Fk = (42.5)(1.03)\\93.7-Fk = 43.775\\Fk = 93.7 - 43.775\\Fk = 49.925N$

Hence the magnitude of the force of kinetic friction (in N) acting on the crate is 49.925N

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2 years ago

14. Mechanical energy is (1 point)

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Answer:

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Explanation:

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2 years ago

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Answer:

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Answer:

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3 years ago