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Ratling [72]
3 years ago
9

How much work is required to make a 1400 kg car increase its speed from 10 m/s to 20 m/s?

Physics
1 answer:
andrew11 [14]3 years ago
6 0
Sbbxnd xj cbc a xnbxhznxbxjzbbzjz. hzbzbzihzh. jzbzjzb
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One of the dangers of tornados and hurricanes is the rapid drop in air pressurethat is associated with such storms. Assume that
Oksi-84 [34.3K]

Answer:

The net outward force is exerted on a square window of the house is 4.5930\times10^{4}\ N.

Explanation:

Given that,

Pressure = 1.02 atm

External air pressure = 0.910 atm

Distance = 2.03 m

We need to calculate the net outward force

Using formula of force

F= PA

Where, P = pressure

F = force

A = area

Put the value into the formula

F=(1.02-0.910)\times101325\times(2.03)^2

F=4.5930\times10^{4}\ N

Hence, The net outward force is exerted on a square window of the house is 4.5930\times10^{4}\ N.

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4 years ago
What is the outermost layer of the sun? photosphere corona core radiative zone chromosphere convective zone
murzikaleks [220]
The answer is Corona 
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3 years ago
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Three children are riding on the edge of a merry-go-round that is 100 kg, has a 1.60-m radius, and is spinning at 20.0 rpm. The
Kay [80]

Answer:

25.33 rpm

Explanation:

M = 100 kg

m1 = 22 kg

m2 = 28 kg

m3 = 33 kg

r = 1.60 m

f = 20 rpm

Let the new angular speed in rpm is f'.

According to the law of conservation of angular momentum, when no external torque is applied, then the angular momentum of the system remains constant.

Initial angular momentum = final angular momentum

(1/2 x M x r^2 + m1 x r^2 + m2 x r^2 + m3 x r^2) x ω =

                                  (1/2 x M x r^2 + m1 x r^2 + m3 x r^2 ) x ω'

(1/2 M + m1 + m2 + m3) x 2 x π x f = (1/2 M + m1 + m3) x 2 x π x f'

( 1/2 x 100 + 22 + 28 + 33) x 20 = (1/2 x 100 + 22 + 33) x f'

2660 = 105 x f'

f' = 25.33 rpm

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3 years ago
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Answer:

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Explanation:

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A charge travels from the positive terminal of a 6�-V battery, through a light bulb, and through the battery back to the positiv
kodGreya [7K]

Answer:

0 V

Explanation:

- The potential for the charge to flow through the circuit and back to the same terminal means that work-done per unit length i.e Potential difference is zero because the total work-done for the charge to complete the loop and back at the same point " Terminal "

                             Potential difference = 6 - 6 = 0 V

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