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Degger [83]
3 years ago
9

How long would it take a sound wave from a car alarm to travel 1 km if the temperature is 0 degrees Celsius

Physics
1 answer:
Savatey [412]3 years ago
3 0
The speed of sound in dry air at 0°C is 331.3 meters per second.

       (1,000 meters) x (1 second / 331.3 meters)  =  3.018 seconds  .
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Using the equation for the final velocity in terms of masses and initial velocity of the gliders for a perfectly inelastic colli
tatuchka [14]

Answer:

Comparison has been made.

Explanation:

Consider perfectly inelastic collision.Two masses of m1 and m2 with initial velocities u1 and u2 before colliding, stick together after collision and move with common speed v. then according to the rule of momentum preservation

m1u1+m2u2=  (m1+m2)v

v= \frac{m1u1+m2u2}{m1+m2}

If u1 and u2 are known the final common velocity can be determined

Initial kinetic energy is

\frac{1}{2}m1u1^{2}+\frac{1}{2}m2u2^{2}

The collion here is perfectly inelastic this means kinectic energy is not conserved. Therefore, initial kinectic energy is not equal to final kinectic.  

\frac{1}{2}m1v^{2}+\frac{1}{2}m2v^{2}

4 0
2 years ago
Why do you think it might be useful to know the distance between a gun fired and it's target?
inysia [295]
Distance plays an incredible factor, especially when taking into consideration especially long distances in terms of shooting a gun. You may be familiar with the Coriolis Effect, and how a bullet's trajectory will change in relation to the rotation of the Earth. The farther the distance, the greater the change in trajectory. 
4 0
3 years ago
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What happens to the pressure of a gas inside a container if the temperature of the gas decreases?
My name is Ann [436]

Answer:

Pressure Increases

Explanation:

When the temperature of a gas is increased inside a container then the pressure of the gas inside the container increases.

This can be deduced by the Ideal Gas law equation:

P.V=n.R.T

where:

P = pressure of the gas

V = volume of the gas

n = no. of moles of gas

R = universal gas constant

T= temperature of the gas

So,

P\propto T hence the pressure of the gas will increase while the temperature is increased at a constant volume

5 0
3 years ago
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Write the relation between horsepower and Watt?​
Vadim26 [7]

Explanation:

Horsepower is related to watt as: 1 horsepower = 746 W = 750 W approximately. 1 horsepower (HP) = 750 watt (approx.) The power is one watt when one joule of work is done in one second.

8 0
2 years ago
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Krishne wants to measure the mass and volume of a thimble. Which tools should she use?
andrew11 [14]
To measure the mass, you would use a balance. To measure the volume, you can use a variety of ounces, cups, pints, quarts, and gallons. Good luck!
6 0
3 years ago
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