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emmainna [20.7K]
3 years ago
10

With the aid of a suitable diagram, explain what is meant by an electromagnetic wave.

Physics
1 answer:
suter [353]3 years ago
3 0

Answer:

Electromagnetic waves or EM waves are waves that are created as a result of vibrations between an electric field and a magnetic field. In other words, EM waves are composed of oscillating magnetic and electric fields.

Explanation:

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A spring is 14cm long. Three masses are hung from it and then it is measured again. Now it is 19.5cm long. What force did the th
lukranit [14]

Answer:

Gravity

Explanation:

The answer is gravity because when the 3 masses were hung from the spring, gravity pulled the spring towards the ground.

3 0
3 years ago
Which statement does NOT refer to radiation?
fiasKO [112]

B. Warm air rises and takes heat with it; eventually it cools and sinks.

Explanation:

Warm air rising and taking heat with it which eventually cools and sinks describes a typical convection current. This is not radiation

Convection and radiation are both forms of heat transfer alongside conduction.

Radiation is the only form of heat transfer that does not involve the use of a medium or particles.

Air is a medium and it flouts the concept of heat transfer by radiation.

Convection is mostly taking place in fluids especially liquid and gas.

learn more:

Convection brainly.com/question/377220?source=aid8168908

#learnwithBrainly

8 0
4 years ago
Read 2 more answers
Gold is called noble gas why
slamgirl [31]
This is what i found.
Gold<span> is a </span>noble<span> element because "in chemistry, the </span>noble<span>metals are metals that are resistant to corrosion and oxidation in moist air (unlike most base metals)."</span>
3 0
4 years ago
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An unknown additional charge q3q3q_3 is now placed at point B, located at coordinates (0 mm, 15.0 mm ). Find the magnitude and s
Yanka [14]

Answer:

0.3nanocouloumb

Explanation:

Pls see attached file

7 0
4 years ago
In her hand, a softball pitcher swings a ball of mass 0.245 kg around a vertical circular path of radius 59.8 cm before releasin
GuDViN [60]

Answer:

The velocity is v_b = 20.17 \ m/s

Explanation:

From the question we are told that

   The mass of the ball is  m = 0.245 \ kg

   The radius is  r =  59.8 \  cm  =  0.598 \ m

   The force is  F =  30.9 \ N

   The speed of the ball is  v = 16.0 \ m/s.

Generally the kinetic energy at the top of the circle is mathematically represented as

    K_t  =  \frac{1}{2} *  m  *  v^2

=> K_t  =  \frac{1}{2} *  0.245   *  16.0 ^2  

=> K_t  =  31.36 \ J  

Generally the work done by the force applied on the ball from the top to the bottom  is mathematically represented as

       W =  F *  d

Here  d is the length of  a semi - circular arc which is mathematically represented as

       d =  \pi * r

So

      W =  30.9 *  0.598

      W = 18.48 \ J

Generally the kinetic energy at the bottom is mathematically represented as

      K_b  =  \frac{1}{2} *  m *  v_b^2

=>    K_b  =  \frac{1}{2} *  0.245  *  v_b^2

=>   K_b  =  0.1225  *  v_b^2

From the law of energy conservation

     K_t +  W  =K_b

=>    31.36+  18.48 = 0.1225  *  v_b^2

=>    v_b = 20.17 \ m/s

3 0
3 years ago
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