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ddd [48]
3 years ago
8

"A simple heat engine works by extracting heat from the hot reservoir, which is then converted into mechanical work, then unconv

erted heat is exhausted to the atmosphere"
True or false​
Physics
1 answer:
Elanso [62]3 years ago
6 0
Umm no se nada perón
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A 2500 kg car traveling to the north is slowed down uniformly from an initial velocity of 20 m/s by a 5620 N braking force actin
Dennis_Churaev [7]

Answer:

the distance traveled by the car is 42.98 m.

Explanation:

Given;

mass of the car, m = 2500 kg

initial velocity of the car, u = 20 m/s

the braking force applied to the car, f = 5620 N

time of motion of the car, t = 2.5 s

The decelaration of the car is calculated as follows;

-F = ma

a = -F/m

a = -5620 / 2500

a = -2.248 m/s²

The distance traveled by the car is calculated as follows;

s = ut + ¹/₂at²

s = (20 x 2.5) + 0.5(-2.248)(2.5²)

s = 50 - 7.025

s = 42.98 m

Therefore, the distance traveled by the car is 42.98 m.

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Answer:

D because those are both concerning.

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Answer:

what is the action and reaction ?

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An adaptation of an animal in the desert might be to
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Why is it important to know the direction of the force applied to a moving object and the direction in which the object is movin
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C is correct.  The work-force relation is given by W=F·d, where F is force vector, and d is the displacement vector.  The dot is the dot product, which is a measure of how parallel the two vectors are.  It can be restated as the product of two vector magnitudes times the cosine of the angle between them.  Therefore work is a scalar, not a vector, since the dot product returns a scalar.  
W=Fdcos(\theta)
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