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3 years ago

Need this homework for today so help 50 point

Physics

1 answer:

Rina8888 [55]3 years ago

4 0

Number one- the pendelum slowly reduces energy and eventually loses everything and will stand still.
Number two- I can account due to the factor of it repeating the same result

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A wave travels at a speed of 242 m/sif the distance between crest is 0.11m what is the frequency of the wave

andreyandreev [35.5K]

Answer:2200 hz

Explanation:

speed=242m/s

Distance between crest is there wavelength=0.11m

Frequency=speed ➗ wavelength

Frequency=242 ➗ 0.11

Frequency=2200

Frequency=2200 hz

7 0

4 years ago

A bungee jumper jumps from a tall bridge that is 60m above a flat, dry creek bed. She is carrying an audio generator that emits

dolphi86 [110]

Answer:

Explanation:

The original frequency of sound f₀

The apparent frequency of sound fa

For apparent frequency the formula is

fa = $f_0\times\frac{V+v}{V-v }$ , v is velocity of jumper which increases as he goes down .

Beat frequency

= fa - f₀

= $f_0\times(\frac{V+v}{V-v }-1)$

= $f_0\times(\frac{2v}{V-v })$

since v is very small in comparison to V , velocity of sound , in the denominator , v can be neglected.

beat frequency = $f_0\times(\frac{2v}{V })$

v , the velocity of jumper will go on increasing as long as net force on the jumper is positive or

mg > kx where x is extension in the cord and k is its force constant . Below this point kx or restoring force becomes more than weight of the jumper and then net force on the jumper directs upwards. At this point beat frequency becomes maximum.

6 0

3 years ago

What force can be seen when North Pole is brought near to South Pole

andrezito [222]

Answer:

Explanation:

The answer is magnetic force

6 0

3 years ago

Read 2 more answers

A box weighing 43.2 N is pulled horizontally until it slides uniformly lat a constant

GREYUIT [131]

Your diagram should include four forces:

• the box's weight, pointing down (magnitude w = 43.2 N)

• the normal force, pointing up (mag. n)

• the applied force, pointing the direction in which the box is sliding (mag. p = 6.30 N, with p for "pull")

• the frictional force, pointing oppoiste the applied force (mag. f )

The box is moving at a constant speed, so it is inequilibrium and the net forces in both the vertical and horizontal directions sum to 0. By Newton's second law, we have

n + (-w) = 0

and

p + (-f ) = 0

So then the forces have magnitudes

w = 43.2 N

n = w = 43.2 N

p = 6.30 N

f = p = 6.30 N

5 0

3 years ago

You run a race with your friend. At first you each have the same kinetic energy, but then you find that she is beating you. When

Blizzard [7]