4 years ago

Suppose you see two stars: a blue star and a red star. Which of the following can you conclude

Physics

1 answer:

Mnenie [13.5K]4 years ago

8 0

Answer:

Explanation:

blue stars have a hotter sufarce arra, thats what makes them brighter.

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What is the relationship between an objectâ€™s temperature and its heat?

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Answer:

Explanation:

Heat and temperature are related to each other, but are different concepts. Heat is the total energy of molecular motion in a substance while temperature is a measure of the average energy of molecular motion in a substance. ... Temperature does not depend on the size or type of object

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3 years ago

in terms of mechanical advantage and velocity ratio write an expression for the efficiency of a simple machine

mixer [17]

Answer:

Efficiency = (MA/VR) ×100%

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3 years ago

If Sean traveled 7 blocks in 200 seconds and each block is 150 meters. What is his velocity?

valentinak56 [21]

Answer:

5.25

Explanation:

tell me if u need an explanation

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3 years ago

Describe a situation where you might have high velocity but low acceleration

Dennis_Churaev [7]

In a level cruise on a passenger airliner, flying in a straight line at a steady 550 miles per hour.
Acceleration is zero.

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3 years ago

Beat frequency problem. Your ear simultaneously hears waves from different sources, so it can hear beats from the two speakers.

podryga [215]

Completed question:Suppose one speaker is driven at 570 Hz and the other at 554 Hz. What is the beat frequency in Hz? The average frequency in Hz?

Answer:

Beat frequency= 16Hz

Average frequency = 562Hz

Explanation:

Beat frequency f = f2-f1

Where f2 is frequency of source with higher frequency

f1 is frequency of source with lower frequency

f1= 554Hz, f2= 570Hz

beat frequency (f) = 570 -554

= 16Hz

Average frequency = $\frac{554+570}{2}$

= $\frac{1124}{2}\\ =562Hz$

5 0

3 years ago