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3 years ago

When you speak into a cell phone, your sound waves must be converted into which other waveform in order to transmit a signal

Physics

1 answer:

JulijaS [17]3 years ago

4 0

They must be converted into radio waves in order to transmit a signal.

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Why do we need to convert mass to moles in stoichiometry problems.

laiz [17]

Since a mole represents a large number of molecules, it is not possible to count the number of molecules directly, the only method is through weight. The mass is converted to moles so that the number of molecules in the reaction are kept track of.

7 0

3 years ago

Cars driving 15.7 m/s on a flat ground drives off of 25.3 m High cliff how far from the base of the cliff does it land

MA_775_DIABLO [31]

The car lands 35.6 m from the base of the cliff

Explanation:

The motion of the car is a projectile motion, which consists of two independent motions:

- A uniform motion (constant velocity) along the horizontal direction

- A uniformly accelerated motion, with constant acceleration (acceleration of gravity) in the downward direction

We start by analyzing the vertical motion, in order to find the time of flight of the car. We do it by using the following suvat equation:

$s=u_y t+\frac{1}{2}at^2$

where:

s = 25.3 m is the vertical displacement of the car (the height of the cliff)

$u_y=0$ is the initial vertical velocity of the car (because it is moving horizontally)

t is the time of the fall

$a=g=9.8 m/s^2$ is the acceleration of gravity

Solving for t, we find :

$t=\sqrt{\frac{2s}{g}}=\sqrt{\frac{2(25.3)}{9.8}}=2.27 s$

Now we can analyze the horizontal motion of the car, which moves with constant horizontal velocity of

$v_x = 15.7 m/s$

Therefore, the horizontal distance covered in a time t is

$d=v_x t$

and by substituting t = 2.27 s, we find the how far from the base of the cliff the car lands:

$d=(15.7)(2.27)=35.6 m$

Learn more about projectile motion:

brainly.com/question/8751410

#LearnwithBrainly

7 0

3 years ago

What does electrical potential energy mean

Anit [1.1K]

The energy a charge has due to its position relative to other charges.

7 0

3 years ago

Consider two slides, both of the same height. One is long and the other is short. From which slide will the children have a grea

bixtya [17]

Answer:

Explanation:

Sine the plane is horizontal , effect of gravity on horizontal motion will be nil.

Since no friction is acting on it , no horizontal force is acting on it. Since no vertical ,no horizontal force is acting on it , it will have uniform motion ,ie its velocity will remain unchanged during its motion , no matter how long the path is.

So , velocity along the path will remain unchanged.

4 0

3 years ago

A bar B made of some material is attracted by a magnet. Is the bar B magnetised ?

Dvinal [7]

Answer:

No, it is not magnetized.

Explanation:

Bar B does not necessarily have to be magnetized before it can be attracted to a magnet. It just has to be a magnetic material such as Iron.

If bar B were magnetized, it could either be attracted or repelled by the magnet since this would depend on the side of the pole of bar B facing it.

Since we are not given any information about bar B other than it is attracted to the magnet, it is thus not magnetized.

7 0

3 years ago