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Volgvan
3 years ago
8

If we want to describe work, we must have

Physics
2 answers:
tresset_1 [31]3 years ago
8 0

The answer is C

Hope that helps!

Good luck :)

PtichkaEL [24]3 years ago
6 0

Answer:

The correct answer is option c.

Explanation:

Work is defined as product of the force applied on object and displacement of the object.the direction of the force and displacement of the object are same in direction.It is measures is  Joules (J).

W=F\times d

Joules(J)= Newton(N) × meter(m)

W = Work done in Joules

F = force applied in Newtons.

d = displace of the object due to applied force in miters

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maria [59]

Answer:

a nucleus

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4 0
3 years ago
What is the cost of operating a 100 W light bulb for "4 hrs per day" for 30 days, if the cost of electricity is 6 cents kW•h
Sidana [21]

Answer:

the cost of operating the light bulb is 72 cents.

Explanation:

Given;

cost of electricity, C = 6 cents / kW.h

power of light bulb, P = 100 W

time of light power consumption, t = 4 hours per day for 30 days

total time = 4 hours x 30 = 120 hours

Power consumed by the light bulb is calculated as;

P = 100 x 120 = 12000 w.h = 12 kW.h

Cost of power consumption = 6 cents/kWh x 12 kWh

                                               = 72 cents

Therefore, the cost of operating the light bulb is 72 cents.

3 0
3 years ago
How long does it take (in minutes) for light to reach mercury from the sun, a distance of 6.02 × 107 km?
Ksju [112]
Light travels at a speed of:
c=3 \cdot 10^8 m/s
The distance between Mercury and Sun is S=6.02 \cdot 10^7 km=6.02 \cdot 10^{10} m, so the time it takes is
t= \frac{S}{c}= \frac{6.02 \cdot 10^{10} m}{3 \cdot 10^8 m/s}  =200.7 s
if we want to convert this into minutes, keeping in mind that 1 min = 60 seconds, we should divide this value by 60:
t= \frac{200.7 s}{60 s/min}=3.34 min
6 0
4 years ago
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Answer:

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4 years ago
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I would say D. all of the above
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