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Nana76 [90]
3 years ago
9

When the car engine is hot, _________

Physics
1 answer:
Lera25 [3.4K]3 years ago
4 0

Answer:

Option D:

Never remove the radiator cap.

Explanation:

When the car engine is hot, especially during a situation where the engine is overheating, NEVER REMOVE THE RADIATOR CAP.

This is because the water in the radiator is now at a very high temperature and pressure. Once the cap is slightly twisted, this high-pressure water can violently erupt through the radiator cap spewing hot water on the face of the persons closest to it.

The best practice is to allow the car engine to cool down before the radiator is opened.

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Two particles have a mass of 8kg and 12kg, respectively. if they are 800mm apart, determine the force of gravity acting between
natima [27]
The magnitude of the force of gravity acting between the particles is:
F=G\frac{m_1.m_2}{d^2} 
The weight of each particle is:
P=mg
Now let's plug in the numbers knowing that G=6.67\times10^{-11} , g=9.81, d=0.8 and m1 and m2 are already given in kilograms. We get then:
P_1=m_1.g=78.48N
P_2=m_2.g=117.72N
F=G\frac{m_1.m_2}{d^2}=1.00\times10^{-8}N

This results shows us why we don't often see objects being attracted to each other, their mass is too small compared to the earth gravitational pull.

8 0
3 years ago
Which of these statements is correct about photosynthesis and decomposition?
Ede4ka [16]
<span>The last option. Plants absorb carbon dioxide from the atmosphere, water from the soil and other nutrients also from the soil - salts containing nitrogene, potassium, sulphur, etc. They use water and carbon dioxide to produce sugar through photosyntesis. Decomposition is the reaction that converts any organic compound back into inorganic compounds - water, carbon dioxide and salts containing nitrogene, potassium, sulphur, etc. So it's basically the opposite. So photosyntesis uses carbon dioxide as a reactive and take it from the atmosphere, whereas decomposition generates carbon dioxide as a product and releases it to the atmosphere.</span>
7 0
4 years ago
The strength of a magnetic field is an indication of how many flux lines per square inch there are. This is called
Nat2105 [25]

Answer:

gauss

Explanation:

8 0
3 years ago
Tides occur in oceans but not in lakes why?​
lawyer [7]

Answer:

Explanation:

Tides occur mainly in oceans because that is basically one huge body of water that is free to move all over the earth. Lakes and rivers do not cover enough area to have their water be moved significantly by gravity, or in other words, to have tides.

7 0
3 years ago
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A student throws a ball upward with a velocity of 35 m/s. What is the acceleration of the ball as it rises to the top of its arc
lora16 [44]

Answer:

The acceleration of the ball as it rises to the top of its arc equals 9.807 meters per square second.

Explanation:

Let suppose that maximum height of the arc is so small in comparison with the radius of the Earth.

Since the ball is launched upwards, then the ball experiments a free-fall motion, that is, an uniform accelerated motion in which the element is accelerated by gravity. Then, the acceleration experimented by the motion remains constant at every instant and position.

Besides, the gravitational acceleration in the Earth and, in consequence, the acceleration of the ball as it rises to the top of its arc equals 9.807 meters per square second.

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3 years ago
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