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2 years ago

A baseball player slides into second base. What happens to his momentum?

2 answers:

7 0

He momentum is reduced by external forces of friction and air resistance. Momentum is not conserved here because this is not a closed system.

Alex2 years ago

4 0

Due to friction from sliding against the ground, the player decelerates in 1 direction. Thus his momentum decreases.

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Question 4

EleoNora [17]

Answer:

D. 75 watts

Explanation:

brainliest please? i've just answered 3 of your questions and they were all correct! :) i hope i helped!

8 0

2 years ago

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Technician A says that a 12-volt battery has six cells. Technician B says that the more plates a cell in a battery has, the more

Stells [14]

Answer:Technician A

Explanation:

Technician A is right as a 12 v battery contains 6 cells of 2.2 volts and

The size of the battery plates and amount of electrolyte decides the amount of charge lead acid batteries can store for example thus more plates a cell does not mean more voltage it creates.

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3 years ago

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The tub of a washing machine goes into its spin cycle, starting from rest and gaining angular speed steadily for 8.00 s, at whic

hichkok12 [17]

Answer:

N = 50 rev

Explanation:

Initially tub is at rest and then accelerated uniformly to its final speed

so we have

$\omega_i = 0$

$\omega_f = 5 rev/s$

time taken by it to reach the final speed

t = 8 second

now the total number of revolutions is given as

$N = (\frac{(\omega_f + \omega_i}{2})(time)$

now we have

$N_1 = (\frac{0 + 5}{2})(8) = 20 rev$

Now when its lid is opened its safety switch is off due to which it is uniformly decelerated and comes to rest in 12 s

so we have

$N_2 = (\frac{5 + 0}{2})(12)$

$N_2 = 30 rev$

So here we have total number of revolutions given as

$N = 20 + 30 = 50 rev$

8 0

3 years ago

Your boss asks you to design a room that can be as soundproof as possible and provides you with three samples of material. The o

garik1379 [7]

The "coefficient of absorption" of a soundproofing material is

the fraction of sound energy that goes into the material, gets

absorbed, doesn't come out, and is never heard again.

So, sample C would be the best choice, because the percentage

of the energy in an incident wave that gets absorbed in this material

is the greatest, and the percentage of the energy that remains in a

reflected wave from this material is the smallest. (Choice-B)

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3 years ago

The frequency of a given region of the electromagnetic spectrum ranges from 3 × 1016 − 3 × 1019 hertz. Which type of wave is fou

yan [13]

The most sensible answer is B

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3 years ago