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NARA [144]
2 years ago
12

William drew a diagram of a box containing a gas for his science project. His drawing is shown.

Physics
1 answer:
Olin [163]2 years ago
7 0
Question? U need a drawing
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Waves interact with ___ and other ___.
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Sand and other sources?
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What is most likely to happen to light that hits an opaque object?
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B. is the answer.

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Find the average speed of a car that travels 45km in 2hours 15minutes​
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20 km/h

Explanation:

45 km ÷ 2.25 hours (15 mins is 0.25 hours)

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2 years ago
A spring with a spring constant value of 125 N/m is compressed 12.2 cm by pushing on it with a 215 g block. When the block is re
allsm [11]

Answer:

v = 2.94 m/s

Explanation:

When the spring is compressed, its potential energy is equal to (1/2)kx^2, where k is the spring constant and x is the distance compressed. At this point there is no kinetic energy due to there being no movement, meaning the net energy in the system is (1/2)kx^2.

Once the spring leaves the system, it will be moving at a constant velocity v, if friction is ignored. At this time, its kinetic energy will be (1/2)mv^2. It won't have any spring potential energy, making the net energy (1/2)mv^2.

Because of the conservation of energy, these two values can be set equal to each other, since energy will not be gained or lost while the spring is decompressing. That means

(1/2)kx^2 = (1/2)mv^2

kx^2 = mv^2

v^2 = (kx^2)/m

v = sqrt((kx^2)/m)

v = x * sqrt(k/m)

v = 0.122 * sqrt(125/0.215)        <--- units converted to m and kg

v = 2.94 m/s

3 0
2 years ago
Field of psychology that studies the behavior of shoppers
Kay [80]

Answer:

Consumer

Explanation:

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