3 years ago

Would the energy of the wave increase or decrease if the speed of the wave increases? Why?

1 answer:

4 0

Answer: The energy of a wave increases with an increase in the amplitude of the wave. The energy of a wave decreases with an increase in the amplitude of a wave.

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What are some real-life examples of the physical features of the Earth? Have you seen examples of forces in motion? Write a disc

Scorpion4ik [409]

The earth is so round that we can run around it in five million days

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1 year ago

Science fair project

victus00 [196]

For Science fair project you can do convection current

Explanation:

Show how to do the process

and then make a model to demonstrate

Materials required:

Potassium Permanganate,beaker,bunsen burner,water and retort stand

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3 years ago

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How far does light travel in the time it takes sound to travel 1 cm in air at 20°c?

kykrilka [37]

The speed of sound at $20^{\circ}C$ is approximately v=343 m/s. The distance covered by the sound wave is
$s=1 cm=0.01 m$
And the time it takes is
$t= \frac{S}{v}= \frac{0.01 m}{343 m/s}=2.9 \cdot 10^{-5} s$

Now we want to find how far the light travels during this time. Light travels at speed $c=3 \cdot 10^8 m/s$ , therefore the distance it covers during this time is
$S=ct = (3 \cdot 10^8 m/s)(2.9 \cdot 10^{-5} s)=8700 m$

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3 years ago

A moving small car has a head-on collision with a large stationary truck 7.3 times the mass of the car. Which statement is true

san4es73 [151]

Answer:

The car would speed off 2x's as fast as the speed of the heavy truck provided the the collision is an elastic collision where there's no or little friction occurring within the scenario.

Explanation:

Newton's law proves that an object with a greater mass can move objects of lesser mass at greater distances and speed.

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3 years ago

Interactive Solution 9.1 presents a model for solving this problem. The wheel of a car has a radius of 0.300 m. The engine of th

Murrr4er [49]

Answer:

740 N

Explanation:

We are given that

Radius,r=0.3 m

Torque, $\tau=222 Nm$