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3 years ago

A 36.75 kg boulder is rolling down a hill. If, at one moment, the boulder has a momentum of 241.5 kg. m/s, what is its

Physics

1 answer:

Lady_Fox [76]3 years ago

3 0

Answer:

6.571428571m/s

Explanation:

The momentum of an object is basically a measure of its motion, and it takes both mass and the velocity an object is travelling at into account.

Momentum = mass x velocity

<em>(sub in values from question)</em>

241.5=36.75v

v=6.571428571m/s

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Please help ASAP please ASAP

alina1380 [7]

The answer to your question is 185

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3 years ago

A gas occupies 210 ml at -73Â°c. to have the same gas occupy 360 ml: should the temperature be increased or decreased? what is t

telo118 [61]

The relation between volume and temperature is direct, this is the higher the temperature the higher larger the volume.

Therefore, if you want that your gas occupies a larger volumen, you should increase the temperature, assuming other conditions (pressure and number of moles) remain unchanged.

The new temperature may be calculated using the proportion:

V1 / T1 = V2 / T2

=> T2 = V2 * T1 / V1

T1 and T2 are in absolute degrees, so T1 = - 73 + 273.15 = 200.15 K

=> T2 = 360 ml * 200.15 K / 210 ml = 343

Answer: the temperature should be increased to 343 K

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3 years ago

The driver of a car traveling at a speed of 27 m/s slams on the brakes and comes to a stop in 3 s. If we assume that the speed c

NISA [10]

Answer:

Average speed = 13.5 m/s

Explanation:

Since the car is running at a speed of 27 m/s and it stops after 3 seconds by applying the brake. Therefore, the initial speed of the 27 m/s and final speed is 0.

Use below formula to find the average speed :

Average speed = (Initial speed + final speed ) / 2

Average speed = (27 + 0 ) / 2

Average speed = 13.5 m/s

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3 years ago

In a physics lab, you measure the vibrational-rotational spectrum of hcl. the estimated separation between absorption peaks is:_

BlackZzzverrR [31]

The appropriate value in blank given is Δf = 5.5 x $10^{11}$ Hertz.

We have vibrational - rotational spectrum Hydrochloric Acid.

We have to investigate the estimated separation between absorption peaks and fill the blank.

<h3>What is vibrational - rotational spectrum ?</h3>

Rotational–vibrational spectroscopy is a branch of molecular spectroscopy. It deals with the infrared and Raman spectra of molecules in the gaseous phase.

According to the question -

The estimated separation between absorption peaks in the vibrational-rotational spectrum of HCl is denoted by Δf and is equal to -

Δf = 5.5 x $10^{11}$ Hertz

Hence, the appropriate value in blank given is Δf = 5.5 x $10^{11}$ Hertz.

To learn more about vibrational-rotational spectrum, visit the link below-

brainly.com/question/18403840

#SPJ4

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2 years ago

Select the correct answer.

chubhunter [2.5K]

I believe it’s self-referent encoding

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3 years ago