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.
Answer:
B. From the light due to the explosion
Explanation:
Space is basically a vacuum, meaning it is void of matter or to be more accurate, the matter are very far apart. Now sound and vibrations need matter for them to travel through. Sound is also a type of vibration, and they can only travel through a medium (made up of matter) for them to move along. Since the astonaut is in space, then he won't feel vibrations or hear the sound of the expolosion..
On the other hand, light is an EM wave or an electromagnetic wave. Electromagnetic waves can travel through a vacuum. So the answer would be B.
Answer:
Explanation:
Given:
- time taken by the rock to hit the hit the ground when thrown up from the cliff,
- initial velocity of projection,
<u>Using eq. of motion:</u>
where:
distance travelled upwards to reach the top height
velocity at the top height during the motion = 0
<u>Now the time taken to cover this displacement:</u>
where
time taken to reach the top
<u>Hence the time for which the rock travels down:</u>
<u>Now the displacement of the rock in the downward direction:</u>
where:
total downward displacement
initial velocity for the course of downward motion
total time taken for the downward motion
So, the height of the cliff:'
“playing video games can change the brain regions responsible for attention and visuospatial skills and make them more efficient. ... Research to date suggests that playing video games can change the brain regions responsible for attention and visuospatial skills and make them more efficient.”
The amount of energy that a wave may transfer to a unit area of a surface each second is measured as the wave's intensity. Watts per square meter is a unit used to express intensity. A sound wave's frequency is equal to its rate of vibration, and its intensity is determined by its amplitude.
<h3>What is the intensity of sound waves affect the frequency?</h3>
The energy of a vibration is quantified in decibels as intensity or loudness (dB). A sound has a high intensity if it is loud.
Therefore, perceive noise as louder the higher the frequency, although frequency does not indicate how loud a sound is.
Learn more about sound waves here:
brainly.com/question/1585667
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