4 years ago

When you ride your bicycle, in what direction is the angular velocity of the wheels?

1 answer:

6 0

When you ride a bicycle it means you are moving forward and the wheels of the bicycle are rotating anti- clockwise as viewed from the left side of the bike

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What is mass number

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Answer:

the total number of protons and neutrons in an atom

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A car moving at a speed of 20 m/s, then accelerates uniformly at until it reaches a speed of What distance does it travel during

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3 years ago

Definition of mass<br> definition of density<br> definition of physical properties

butalik [34]

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Mass of a body is define as the total quantity of matter contained in it .

Density is the mass per unit volume in any object .

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3 years ago

An enemy spaceship is moving toward your starfighter with a speed, as measured in your frame, of 0.400c. The enemy ship fires a

kvasek [131]

Answer:

0.859375c

31.03 seconds

Explanation:

v' = Velocity of my ship = 0.4 c

u = Velocity of rocket = 0.7 c

c = Speed of light = $3\times 10^8\ m/s$

s = Distance between my ship and enemy ship = $8\times 10^6\ km$

Relativistic addition of speed is given by

$v=\dfrac{v'+u}{1+\dfrac{uv'}{c^2}}\\\Rightarrow v=\dfrac{0.7+0.4}{1+\dfrac{0.7c\times 0.4c}{c^2}}\\\Rightarrow v=0.859375\ c$

The speed of the missile is 0.859375c

Time is given by

$t=\dfrac{s}{v}\\\Rightarrow t=\dfrac{8\times 10^9}{0.859375\times 3\times 10^8}\\\Rightarrow t=31.03\ s$

It will take 31.03 seconds to reach me.

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3 years ago

Light can make things happen when it is ______. Fill in the missing word. COrrect answer gets brainliest!

MatroZZZ [7]

Answer:

Light can make things happen when it is shining.

(or glowing)

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