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2 years ago

15

A person pushes a box filled with books with a force of 120 newtons a distance of 30 meters within 3 minutes Calculate the work

the person did and the amount of power required
120/30-4

I will give brainliest

1 answer:

leva [86]2 years ago

6 0

They did a lot of work and it must have taken a lot of training. I would love if you have me brainliest

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The rest mass of a proton is 1.673 × 10-27 kg. The relativistic mass of a proton when its velocity is 0.8c is approximately

sergiy2304 [10]

Do u know the formula
$m= \frac{ m_{0} }{ \sqrt{1- \frac{ v^{2} }{ c^{2} } } }$

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2 years ago

What circumstance would allow an officer to search a home even if they didn’t have a warrant?

Ipatiy [6.2K]

Answer:

A

Explanation:

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2 years ago

Determine the magnitude of the effective value of g⃗ at a latitude of 60 ∘ on the earth. assume the earth is a rotating sphere.

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2 years ago

1)the car's engine power is 44000W. Explain this number in a physical sense

Ratling [72]

Answer:

1) It expresses the rate (top speed) at which it can move with time.

2) P = 20 W

3) h = 18 km

Explanation:

1) Power is the rate of transfer of energy.

⇒ Power = $\frac{Energy(or workdone)}{Time}$

i.e P = $\frac{E}{t}$

Thus a car's engine power is 44000W implies that the engine of the car can propel the car at this rate. This expresses the rate (top speed) at which it can move with time.

2) m = 400g = 0.4 kg

t = 20 s

h = 100m

g = 10 m/ $s^{2}$

P = $\frac{mgh}{t}$

= $\frac{0.4*10*100}{20}$

= $\frac{400}{20}$

P = 20 W

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g = 10 m/ $s^{2}$

From the third equation of free fall,

$V^{2}$ = $U^{2}$ - 2gh

V is the final velocity, U is the initial velocity, h is the height.

0 = $(600)^{2}$ - 2 x 10 x h

0 = 360000 - 20h

20h = 360000

h = $\frac{360000}{20}$

= 18000

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The maximum height of the bullet would be 18 km.

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2 years ago

Which will most likely result in the revision of a theory?

viva [34]

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3 years ago

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