4 years ago

Which of the following are basic solutions? Check all that apply. A. Laundry detergent B. Vinegar C. Drain cleaner D. Antacids

Physics

1 answer:

ratelena [41]4 years ago

4 0

A laundry detergent
B vinegar

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Setler79 [48]

What you’re doing is so easy pay attention more I think

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3 years ago

How does the momentum of a 75 kilogram stationary football player compare with that of a 70 kilogram player moving at a velocity

pashok25 [27]

Momentum of an object = (its mass) x (its speed) .

Since speed is a factor of momentum, an object that
isn't moving doesn't have any.

-- The moving player has momentum.

-- The stationary one doesn't.

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3 years ago

Read 2 more answers

A rocket moves away from the surface of earth. As the distance r from the center of the earth the planet increases, what happens

Blizzard [7]

The force of gravity will decrease.
More the distance between the objects, less the force of gravity between them.
They are inversely related.
Hope this help :)

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4 years ago

The siren on an ambulance is emitting a sound whose frequency is2550 Hz. The speed of sound is 343 m/s.(a) If the ambulance is s

Sati [7]

Answer:

0.13451 m

0.124196 m

0.119997901132 m

Explanation:

$v_o$ = Velocity of the observer

$v_s$ = Velocity of sound source

v = Velocity of sound in air = 343 m/s

Wavelength is given by

$\lambda=\dfrac{v}{f}\\\Rightarrow \lambda=\dfrac{343}{2550}\\\Rightarrow \lambda=0.13451\ m$

The wavelength is 0.13451 m

From Doppler effect we have the formula

$f=f'\dfrac{v}{v-v_s}\\\Rightarrow f=2550\dfrac{343}{343-26.3}\\\Rightarrow f=2761.7619198\ Hz$

$\lambda=\dfrac{343}{2761.7619198}\\\Rightarrow \lambda=0.124196\ m$

The wavelength is 0.124196 m

$f=f'\dfrac{v+v_o}{v-v_s}\\\Rightarrow f=2550\dfrac{343+12}{343-26.3}\\\Rightarrow f=2858.38332807\ Hz$

$\lambda=\dfrac{343}{2858.38332807}\\\Rightarrow \lambda=0.119997901132\ m$

The wavelength is 0.119997901132 m

8 0

4 years ago

suppose a ball had a potential energy of 5 j when you dropped it. What would be its kinetic energy just as it hit the ground. (i

Andru [333]

Since we are ignoring air resistance which is a non-conservative force, the potential energy will be completely converted into kinetic energy, resulting in a final kinetic energy of $5J$ .

4 0

3 years ago