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4 years ago

It takes 200 N to move a box 10 meters in 8 seconds. How much power is

Physics

1 answer:

svetoff [14.1K]4 years ago

8 0

Answer:

Explanation:

The equation of power is defined as Power = Workdone/Time Taken

And workdone = Force x Distance so using these equations we get they workdone is, 200x 10 = 2000Nm.

Dividing workdone with time will yield power, 2000 ÷ 8 = 250 Nm/s = 250W.

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Answer:

when you open a can of pop

when you jump on your bed

Explanation:

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3 years ago

Which two, or more, of the following actions would increase the energy stored in a parallel plate capacitor when a constant pote

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4 years ago

A 60 kg Gila monster on a merry-go-round is traveling in a circle with a radius of 3 m, rotating at a rate of 9 revolutions/minu

Yanka [14]

PART A)

mass of the monster = 60 kg

radius = 3 m

frequency = 9 rev/min = 9/60 rev/s

now we can find the angular speed as

$\omega = 2 \pi f$

$\omega = 2 \pi (9/60) = 0.94 rad/s$

now the acceleration is given by

$a_c = \omega^2 R$

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PART B)

now as per Newton's law we have

$F_c = ma_c$

from above all values we have

$F_c = 60(2.66) = 159.9 N$

Part C)

now monster moves inside at radius R = 1 m

so now centripetal acceleration is given as

$a_C = \omega^2 R$

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3 years ago

What changes must be done to the wire to increase its conductance.

777dan777 [17]

Answer:

- Decreasing the resistance

- Using a shorter length

- Using a smaller area wire

Explanation:

Formula for conductance in wires is;

G = 1/R

Where;

G is conductance

R is resistance

This means that increasing the resistance leads to a larger denominator and thus a smaller conductance but to decrease the denominator means larger conductance.

Thus, to increase the conductance, we have to decrease the resistance.

Resistance here has a formula of;

R = ρL/A

Where;

ρ is resistivity

L is length of wire

A is area

Thus, to decrease the resistance, we will have to use a shorter length and smaller area of wire.

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3 years ago