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sesenic [268]
3 years ago
8

Are the Sun's rays like mechanical or electromagnetic waves

Physics
2 answers:
EleoNora [17]3 years ago
7 0
They are electromagnetic waves.
Dmitry_Shevchenko [17]3 years ago
5 0
If the sun generates any mechanical waves, none of them
have ever reached us, because only electromagnetic waves
can travel through empty space.
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Which type of electromagnetic radiation is commonly used for long-distance communications?
Citrus2011 [14]

Answer:

B. Radio waves

Explanation:

Radio waves are transmitted easily through air. They do not cause damage if absorbed by the human body, and they can be reflected to change their direction. These properties make them ideal for communications.

Hope this helps!!

5 0
2 years ago
A coin of diameter 2.54cm placed at 2.54m
ratelena [41]

Answer:

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3 0
3 years ago
A long bar slides on two contact points and is in motion with velocity ν. A steady, uniform, magnetic field B is present. The in
fomenos

Answer:

The induced current in the resistor is I = BLv/R

Explanation:

The induced emf ε in the long bar of length, L in a magnetic field of strength, B moving with a velocity, v is given by

ε = BLv.

Now, the current I in the resistor is given by

I = ε/R where ε = induced emf in circuit and R = resistance of resistor.

So, the current I = ε/R.

substituting the value of ε the induced emf, we have

I = ε/R

I = BLv/R

So, the induced current through the resistor is given by I = BLv/R

5 0
3 years ago
As a roller coaster car crosses the top of a 48.01-m-diameter loop-the-loop, its apparent weight is the same as its true weight.
I am Lyosha [343]

Answer:

The speed of the car, v = 21.69 m/s

Explanation:

The diameter is  = 48.01 m

Therefore, the radius of the loop R = 24.005 m

Weight at the top is n = mv^2/R - mg

Since the apparent weight is equal to the real weight.

So, mv^2/R - mg = mg

v = √(2Rg)

v = √[2(24.005 m)(9.8 m/s^2)]

The speed of the car, v = 21.69 m/s

6 0
3 years ago
Read 2 more answers
Which part of the heating curve corresponds with the melting of a block of ice?
Fittoniya [83]

Answer:

a

Explanation:

the flat lines are the transitions between states of matter. a is melting and b is evaporating.

3 0
3 years ago
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