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3 years ago

PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!

Physics

2 answers:

wel3 years ago

7 0

Answer: Up and down

Explanation :

The waves that require a medium to travel through are mechanical waves. There are two types of mechanical waves.

Longitudinal waves
Transverse waves

The given figure shows a transverse wave in which the particles of the medium move up and down to the direction of propagation of waves i.e. the medium particles are perpendicular in the direction of motion of waves.

The uppermost portion of waves is called crest while the lowermost portion is a trough.

Hence, the correct option is (C).

vitfil [10]3 years ago

3 0

Up and down, diagonally, anything that's ACROSS the direction the wave is moving.

Just NOT back and forth along the line the wave is moving.

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A 1369.4 kg car is traveling at 28.9 m/s when the driver takes his foot off the gas pedal. It takes 5.1 s for the car to slow do

Darya [45]

Answer:

F = 2389.603 N

Explanation:

Given:

Mass m = 1,369.4 kg

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Final velocity v = 20 m/s

Time t = 5.1 s

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a = (v - u)/t

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7 0

3 years ago

A .5kg bird is perched on its nest so that it has 50J of potential energy. how far is it off the of the ground?

pshichka [43]

It is 10.20 m from the ground.

Explanation:

Given:

m = 0.5 kg

PE = 50 J

We know that the Potential energy is calculated by the formula:

$P. E = m \times g \times h$

where m is the is mass in kg; g is acceleration due to gravity which is 9.8 m/s and h is height in meters.

PE is the Potential Energy.

Potential Energy is the amount of energy stored when an object is stationary.

Here, if we substitute the values in the formula, we get

$P. E = m \times g \times h$

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3 years ago

The reflective surface of a CD consists of spirals of equally spaced grooves. If you shine a laser pointer on a CD, each groove

Ipatiy [6.2K]

Answer:

d = 1.55 * 10⁻⁶ m

Explanation:

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The fringe number, m = 1 since it is a first order maximum

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Distance between the central maximum and the first order maximum = 1.1 m

Distance between the screen and the CD = 3 m

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From the setup shown in the attachment, it is a right angled triangle in which

$sin(A_{m}) = \frac{opposite}{Hypotenuse} \\sin(A_{m}) =\frac{1.1}{\sqrt{1.1^{2}+3^{2}}}$

$sin(A_{m} ) = 0.344\\A_{m} = sin^{-1} 0.344\\A_{m} = 20.14^{0}$

Putting all appropriate values into equation (1)

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3 years ago