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wlad13 [49]
3 years ago
5

When compared to other types of waves, electromagnetic waves differ because they are Select one: A. a form of energy. B. able to

travel through a vacuum. C. all visible. D. able to move particles in a medium.
Physics
1 answer:
geniusboy [140]3 years ago
6 0
A form of energy is what a magnetic wave is
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Allushta [10]

Answer:

P = mgh/t = 61(9.8)(0.32)/1.8 = 106.275555... ≈ 110 W

Explanation:

Power is the rate of doing work.

The work changes her potential energy.

4 0
3 years ago
(d) If η = 40% and TH = 427°C, what is TC, in °C?
Brrunno [24]

Answer:

T_C=256.2^{\circ}C

Explanation:

Given that,

Efficiency of heat engine, \eta=40\%=0.4

Temperature of hot source, T_H=427^{\circ}C

We need to find the temperature of cold sink i.e. T_C. The efficiency of heat engine is given by :

\eta=1-\dfrac{T_C}{T_H}

T_C=(1-\eta)T_H

T_C=(1-0.4)\times 427

T_C=256.2^{\circ}C

So, the temperature of the cold sink is 256.2°C. Hence, this is the required solution.

3 0
4 years ago
N
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Answer: de?

Explanation:

7 0
3 years ago
Express force in terms of base units​
MariettaO [177]
<h2><u>Answer:</u></h2>

<u></u>

<u>Force = kgm/s² ⟶ Newton</u>

<h2><u>Explanation:</u></h2>

<u></u>

According to the formula we've learnt,

  • Force = mass × acceleration.

To find force in terms of base units, we must first identify the base SI units of mass & acceleration.

  • Base SI unit of mass = kg (kilogram)
  • Base SI unit of acceleration = m/s² (meter per second squared)

So, the base unit of force is,

  • Force = mass × acceleration.
  • Force = kg × m/s²
  • <u>Force = kgm/s² ⟶ Newton</u>

________________

Hope it helps!

\mathfrak{Lucazz}

4 0
3 years ago
The mass of 25cm of ivory was found to be 0.045kg. caculate the density of ivory in SI units​
solmaris [256]

Answer:

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Explanation:

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