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nataly862011 [7]
2 years ago
11

What notecard word is defined: a substance or particles that a wave travel through.

Physics
1 answer:
puteri [66]2 years ago
7 0

Answer:

medium

Explanation:

A substance or particle that wave travel through is called medium. There are two main types of such medium, some contains particles and some are vacuums.

  • Waves can travel through a vacuum which contains no particles.
  • Some can also contain particles.
  • Waves can interact in different ways with the medium.
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What’s the power if a student does 2240j of work for 2.8 seconds
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Answer:

800 Watts

Explanation:

Power = Work/time

Working in SI units, Power = Watts, Work = Joules, Time = seconds.

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During nuclear decay, a new isotope is created. How is the nucleus of the new isotope different from the parent if the parent is
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Read 2 more answers
If the sprinter accelerates at that rate for a distance of 15 m, and then maintains the velocity he has at that point for the re
ahrayia [7]

Answer:

The time for the entire race is 11.39 sec.

Explanation:

Given that,

Distance = 15 m

Remainder distance = 100 m

Suppose A sprinter begins a race with an acceleration of 3.4 m/s².

We need to calculate the time

Using equation of motion

s=ut+\dfrac{1}{2}at^2

Put the value in the equation

15=0+\dfrac{1}{2}\times3.4\times t^2

t^2=\dfrac{30}{3.4}

t=2.97\ sec

We need to calculate the final velocity of sprinter

Using equation of motion again

v=u+at

Put the value into the formula

v=0+3.4\times2.97

v=10.09\ m/s

We need to calculate the distance covers by sprinter

d=100-15=85\ m

The sprinter need to covers only 85 m.

We need to calculate the time

Using formula of time

t=\dfrac{d}{v}

Put the value into the formula

t'=\dfrac{85}{10.09}

t'=8.42\ sec

We need to calculate the time for the entire race

t''=t+t'

Put the value into the formula

t''=2.97+8.42

t''=11.39\ sec

Hence, The time for the entire race is 11.39 sec.

4 0
3 years ago
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