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Vinil7 [7]
3 years ago
14

Technician A says that the cooling system should be tested for leaks using a pressure-operated pressure pump. Technician B says

that the freezing and boiling point of the coolant can be tested using a thermometer. Who is right?
Physics
1 answer:
mart [117]3 years ago
3 0

Answer:

The correct option is;

Technician A only

Explanation:

Leaks in the cooling system parts such as the radiator cap can be tested with a pressure operated hand pump by attaching the pump cap to the pump with an adaptor and apply pressure enough for there to be a release of pressure at the cap.

The pressure added to the system should be maintained for up to two minutes. If the pressure drops quicker, then there is likely to be leaks in the system

The freezing and boiling point of the coolant is measured with an antifreeze tester which carries the appropriate apparatus to measure the coolants freezing and boiling points.

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SI unit: m/s, m s−1

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Which fundamental force has a small range and is always an attractive force?
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A bar magnet is cut in half, as shown.
Feliz [49]

Answer:

NS/NS

Explanation:

If we cut a bar magnet in half pieces according to the image that is given below the question, then the magnet will show NS/NS that is (North-South/North-South) because the smaller pieces of the magnet will become a small magnet with the same property-carrying both the poles, north pole as well as south pole. The poles will not be separated.

5 0
3 years ago
Read 2 more answers
It's a snowy day and you're pulling a friend along a
NeX [460]

The coefficient of friction between the sled and the snow is 0.119.

To find the answer, we need to know about the friction.

<h3>How to find the coefficient of friction between the sled and the snow?</h3>
  • Whenever a body moves over the surface of another body, a force come into play, which acts parallel to the surface of contact and oppose the relative motion. This opposing force is called friction.
  • To solve the problem, we have to draw the free body diagram of the given system.
  • We have given with the following values,

                                     a=0\\\alpha =35^0\\T=75N\\m=57kg

Here, acceleration will be equal to zero, because the velocity is given as constant.

  • Thus, from the diagram, we can write the balancing equations as follows,

                                      ma=Tcos\alpha -f\\\where\\f=kN\\\N+Tsin\alpha=mg\\Thus,\\N=mg-Tsin\alpha

  • Substituting N in f and f in the equation of ma, then we get,

                   ma= Tcos\alpha -k(mg-Tsin\alpha )

  • Substituting values, we get the coefficient of friction as,

                    0=(75*cos35)-k((57*9.8)-(75sin35))\\\\k((57*9.8)-(75sin35))=(75*cos35)\\\\515.6k=61.44\\\\k=\frac{61.44}{515.6}=0.119

Thus, we can conclude that, the coefficient of friction between the sled and the snow is 0.119.

Learn more about the friction here:

brainly.com/question/28107059

#SPJ1

6 0
1 year ago
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