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4 years ago

Which type of electromagnetic wave often encodes information for sound?

Physics

1 answer:

AysviL [449]4 years ago

8 0

I think the answer is D

Hope this helps :D

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What is the power of a refrigerator with voltage 110 V and<br> current 0.8 A?

tia_tia [17]

Answer: 88

Explanation:

8 0

3 years ago

A bullet is fired from a rifle pointed 45 degrees above horizontal. The bullet leaves the muzzle traveling 1400 m/s. How many se

Bogdan [553]

The bullet's vertical velocity at time $t$ is

$v=1400\dfrac{\rm m}{\rm s}-gt$

where $g=9.80\frac{\rm m}{\mathrm s^2}$ is the acceleration due to gravity.

At its highest point, the bullet's vertical velocity is 0, which happens

$0=1400\dfrac{\rm m}{\rm s}-gt\implies t=\dfrac{1400\frac{\rm m}{\rm s}}g\approx\boxed{142.857\,\mathrm s}$

(or about 140 s, if you're keeping track of significant figures) after being fired.

5 0

3 years ago

Apple juice in a bottle has a volume of 475 cubic centimeters and a mass of 494 grams .Calculate its destiny

VLD [36.1K]

Oakoqmsoqpslqpwpwpw I honestly don’t know why is y’all middle school so difficult

5 0

3 years ago

A shopping cart is pushed and released,

Wewaii [24]

The magnitude of the friction on the cart is 28,56 N

To measure the deceleration of a car, without the value of the time of the movement, the <u>Torricelli equation</u> is used, which consists of:

${v_{f}}^{2}={v_{o}}^{2}+2a\Delta s$

Where is final velocity, is initial velocity, is acceleration, and is displacement.

Now, substitute the values in the formula:

$0^{2} = (3.5)^{2} + 2a6$

$0 = 12.25 + 12a$

$a = -\frac{12.25}{12}$

$a = -1.02$

Finally, the value of the acceleration found is multiplied by the mass of the object, thus measuring the friction force:

$F = 28\times-1.02$

$F = -28.56 N$

Learn more about friction force at: brainly.com/question/13707283

5 0

3 years ago

Consider two identical wave pulses on a rope having a fixed end. Suppose the first pulse reaches the end of the rope, is reflect

jek_recluse [69]

Answer:

zero

Explanation:

Consider two identical wave pulses on a rope having a fixed end. Suppose the first pulse reaches the end of the rope, is reflected back, and then meets the second pulse, both waves will be out of phase by π radians. Therefore, they form destructive interference and hence the amplitude of the resultant pulse would be zero.

4 0

4 years ago