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BlackZzzverrR [31]
2 years ago
9

Which of the following statements is TRUE?

Physics
1 answer:
Thepotemich [5.8K]2 years ago
6 0

Answer:

-Frequency is inversely related to period  f = 1/T

Explanation:

wavelength is measured in length units such as meters, feet, cm, furlong, miles.

-Increasing the amplitude of a wave increases the loudness (in sound waves).

-A compression wave vibrates in a direction that is aligned to the direction of the wave motion.

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An electric train moving at 5m/s accelerates to a speed of 8m/s in 20 seconds. Fine the distance travelled in meters during the
adelina 88 [10]
<h3>Answer:  130 meters</h3>

===================================================

Explanation:

vi = 5 and vf = 8 are the initial and final velocities respectively. The change in time is t = 20 seconds.

So,

x = 0.5*(vi + vf)*t

x = 0.5*(5+8)*20

x = 130 meters

represents the distance traveled. The first equation shown above is one of the four kinematics equations.

3 0
3 years ago
Read 2 more answers
An 1800-kg truck pulls a 710-kg trailer away from a stoplight with an acceleration of 1.20 m/s2 . Part A What is the net force e
faust18 [17]

Answer:

F = 852 N

Explanation:

We apply Newton's second law to the trailer :

F = m*a   Formula (1)

F : net force exerted by the truck on the trailer Newtons (N)

m : mass of the trailer in kilograms (kg)

a : acceleration of the trailer in meters over second square (m/s²)

Data

a=1.20 m/s² : acceleration of the trailer

m=710 kg : mass of the trailer

We replace data in the   Formula (1)  to calculate the net force exerted by the truck on the trailer

F = (710 kg)*(1.20 m/s²)

F = 852 N

8 0
2 years ago
Metals are good conductors of electricity because they _________
Gnesinka [82]

Metals are good conductors because the molecules that are inside the metal are tightly packed together. This is why the heat moves through the metal quickly.

6 0
3 years ago
Why does the Moon appear red during a lunar eclipse?
dem82 [27]

Answer:

Image result for Why does the Moon appear red during a lunar eclipse?

A lunar eclipse takes place when the sun, Earth and moon line up in space. The moon passes through Earth's shadow. ... Bottom line: The moon can look red during a total lunar eclipse because of sunlight that's filtered and refracted by Earth's atmosphere

6 0
2 years ago
What is the acceleration of 200kg mass when a net force of 100 N acts on it​
evablogger [386]

Answer:

0.5m/s^2

Explanation:

net force (resultant force) = mass x acceleration

100N/200kg = 0.5

4 0
3 years ago
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