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elena-s [515]
3 years ago
10

What is the velocity of a car that travels 1,069 meters in 54 seconds?

Physics
2 answers:
irga5000 [103]3 years ago
8 0

Answer:

20.41m/s. hdjdgshd

Explanation:

ok

tatuchka [14]3 years ago
7 0

Answer:

19.7963 m/s

Explanation:

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In an internal combustion engine, heat flow into a gas causes it to <br> .
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Along path BC of the Otto cycle, heat transfer Qh into the gas occurs at constant volume, causing a further increase in pressure and temperature. This process corresponds to burning fuel in an internal combustion engine, and takes place so rapidly that the volume is nearly constant.

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Which of the following objects has the greatest density
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If a current-carrying wire is in a magnetic field, in what direction will a force be exerted on the wire?.
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4 0
2 years ago
While driving a 2150 kg car, carl steps on the gas pedal, accelerating at 4.0 m/s2. If the coefficient of friction between his c
Mrac [35]

Answer:

d. 3332.5 [N]

Explanation:

To solve this problem we will use newton's second law, which tells us that the sum of forces is equal to the product of mass by acceleration.

Here we have two forces, the force that pushes the car to move forward and the friction force.

The friction force is equal to the product of the normal force by the coefficient of friction.

f = N * μ

f = (m*g) * μ

where:

N = weight of the car = 2150*9.81 = 21091.5 [N]

μ = 0.25

f = (21091.5) * 0.25

f = 5273 [N]

Now as the car is moving forward, the car wheels move clockwise. The friction force between the wheels of the car and the pavement must be counterclockwise, i.e. counterclockwise. Therefore the direction of this force is forward. This way we have:

F + f = m*a

F + 5273 = 2150*4

F = 8600 - 5273

F = 3327 [N]

Therefore the answer is d.

6 0
3 years ago
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