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vladimir2022 [97]
3 years ago
7

2. A test model for an experimental gasoline engine does 45 J of work in one cycle

Physics
1 answer:
loris [4]3 years ago
7 0

Answer: im just trying to get some points so i can answer my question.

sorry

Explanation:

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A force of 20. newtons to the left is exerted on a cart for 10. seconds.
myrzilka [38]

OK.  Thank you.  That's an impulse of 200 Newton-sec to the left,
telling us that the cart's leftward momentum increases by 200 kg-m/s
(or its rightward momentum decreases by that amount).

Did you have a question to ask ?

7 0
3 years ago
A locomotive is pulling 15 freight cars, each of which is loaded with the same amount of weight. The mass of each freight car (w
VMariaS [17]

Answer:

298,220 N

Explanation:

Let the force on car three is T_23-T_34

Since net force= ma

from newton's second law we have

T_23-T_34 = ma

therefore,

T_23-T_34 = 37000×0.62

T_23= 22940+T_34

now, we need to calculate

T_34

Notice that T_34 is accelerating all 12 cars behind 3rd car by at a rate of 0.62 m/s^2

F= ma

So, F= 12×37000×0.62= 22940×12= 275280 N

T_23 =22940+T_34= 22940+ 275280= 298,220 N

therefore, the tension in the coupling between the second and third cars

= 298,220 N

3 0
3 years ago
Scientists plan to release a space probe that will enter the atmosphere of a gaseous planet. The temperature of the gaseous plan
ZanzabumX [31]
From my research, the image supports the question. From the graph given, we can construct the equation of the line using the two-point formula. Using the given value of 601 K, we can solve for the missing value of altitude.

y - y1 = [(y2 - y1)/(x2 - x1)](x- x1)
y - 147.52 = [ (567 - 147.54)/(78.11 - 18.4) ](x - 18.4)

Substituting y = 601 to solve for x:
601 - 147.52 = [ (567 - 147.54)/(78.11 - 18.4) ](x - 18.4<span>)
</span>x = 83

Therefore, the probe's instruments will fail at 83 kilometers.

5 0
4 years ago
According to the law of conservation of energy, which statement must be
Gre4nikov [31]

Answer:

D. The total energy of a system can increase only if energy enters the

system

energy must be conserved--it cannot be created or destroyed.

so, if the energy of a system increases, that energy must have come from somewhere

hope this helps!!

5 0
2 years ago
Please help with this :(
Angelina_Jolie [31]

Answer:

I'm sorry I don't have a answer but I like your pfp

8 0
3 years ago
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