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2 years ago

14

You want to design a spy bracelet that can send a signal to a friends bracelet when you are nearby. which type of electromagneti

c radiation would your design use?

2 answers:

never [62]2 years ago

7 0

<span><span>A.</span>Gamma rays</span><span> <span>B.</span>Visible light</span><span> <span>C.</span>Ultraviolet radiation</span><span> <span>D.</span><span>Radio waves</span></span>

Vera_Pavlovna [14]2 years ago

5 0

Radio Waves
(worked for me)
((APEX))

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Vitek1552 [10]

Answer:

The speed of the rain is $v_R = 95.3 km/hr$

Explanation:

From the question we are told that

The initial speed and direction of the car is $v = 55 \ k/hr\$

The angle made with the horizontal is $\theta = 60^o$

The velocity of rain is $v_R$

An illustrate of this question is shown on the first uploaded image

From the diagram we see that

$tan \theta = \frac{v_R}{v }$

=> $v_R = v * tan \theta$

substituting values

$v_R = 55 * tan (60)$

$v_R = 95.3 km/hr$

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Ainat [17]

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the earth has more rotational kinetic energy now than did the cloud of gas and dust from which it formed. where did this energy

goldfiish [28.3K]

Explanation:

Earth or any planet are actually born from huge clouds of gas and dust. Their stellar mass are fairly distributed at a radius from the axis of rotation. Gravitational force cause the cloud to come together. Now the whole gathered in smaller area. Now, individual particles come close to the roational axis. Thus, decreasing the moment of inertia of the planet.

As

I=mr^2

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