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konstantin123 [22]
3 years ago
8

Water makes a good coolant because it has a ____.

Physics
2 answers:
antiseptic1488 [7]3 years ago
8 0
Water makes a good coolant because it has a (A)<span> high specific heat. The higher the specific heat, the slower it reaches the point of boiling. Thus, since its specific is very high, then it makes a good coolant because the moment it reaches it lowest point, the transition from cold to hot will be slower.
</span>
DENIUS [597]3 years ago
8 0

A good coolant must be able to absorb large amount of heat, must be cheap and easily available. we know that water has high specific heat which means that it can absorb large amount of heat in it. it is also easily available and cheap. This makes water a good coolant. So the correct choice is

a. high specific heat

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The person in charge of information management is the database administrator.

<h3>What is a database?</h3>

The term database refers to the arranging of the data that concerns clients in relevant entry point such as computers and file cabinets. This is the way by which companies are bale to keep track of their customers.

The person that is most helpful in the management of the tens of thousands of customer addresses in three different computer systems and written on paper in filing cabinets is the database administrator.

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3 years ago
Objects in space are moving at a constant velocity in a straight line.
tigry1 [53]

Answer:

C

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An object in motion will stay in motion unless acted on by a net positive or negative force.

For answer A. If the object were to be in an orbit, it would inevitably accelerate due to it being acted on by the gravitational force from the object it is orbiting. At different points in the orbit, the object will move at different speeds and continuously transfer between kinetic and potential energy.

For answer B. The object would would not stop their motion. In order for the object to lose energy, it would have to transfer it through friction or through its interaction with a gravitational field.

For answer D. No energy is "required" to maintain constant motion unless the object is willingly fighting against a resistive force like friction or a graviational well.

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1 year ago
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rjkz [21]
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3 years ago
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What is the momentum of a 0.000015 kg mosquito flying straight at you with a velocity of 5.20 m/s?
Setler [38]

Answer:

Momentum, p=7.8\times 10^{-5}\ N-m

Explanation:

Given that,

Mass of a mosquito, m = 0.000015 kg

Velocity of the mosquito, v = 5.2 m/s

We need to find the momentum of the mosquito. The momentum of an object is given by :

p = mv

Put all the values in the above formula.

p=0.000015\ kg\times 5.2\ m/s\\\\p=0.000078\ N-m\\\\\text{or}\\\\p=7.8\times 10^{-5}\ N-m

So, the momentum of the mosquito is 7.8\times 10^{-5}\ N-m.

3 0
2 years ago
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