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AlexFokin [52]
3 years ago
9

3 kg of saturated liquid water, contained in a rigid container at p = 1.5 bar, is heated by a 80 W heater. a) What will the phas

e of the water be after a brief period of heating? Argue your case using an annotated sketch of the process on a p-v or T-v diagram. b) How long will the heat need to be applied for it to raise the pressure to 200 bar? c) Give an estimate for the average specific heat at constant volume, cv, of the water for the duration of this process - based on the changes in specific internal energy and temperature of the water in the process.
Physics
1 answer:
Mkey [24]3 years ago
5 0
Is this science also? bc i know that
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How do objects and substances have kinetic energy??<br><br> I need help ASAP!!
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Objects and substances in motion have Kinetic Energy.

Explanation:

Kinetic Energy is the motion of objects, substances, molecules, atoms .

Whenever an object starts to move, it is in motion. Kinetic Energy is generated, when the object moves and its potential energy gets dropped with the movement. Kinetic Energy is found in every object that moves.

The Kinetic Energy of an object depends both on its mass and its speed. Kinetic Energy increases as mass and speed are increased.

Example:  By using the wind flow from wind turbines, the Kinetic energy in the wind can be transformed to generate electricity by using generators.

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3 years ago
A submerged submarine alters its _____ to rise or fall in the water.
Dima020 [189]
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Submarines use <span>buoyancy by filling ballast tanks up with water. When they are filled with water, they are more dense than the surrounding water, so they are able to sink. If they want to rise, they fill these tanks up with air so that the density is less than the water it surrounds. 
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3 0
3 years ago
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Is it possible to have a net torque when all of the forces sum to zero? Explain.
nexus9112 [7]

Answer:

Yes it is possible

Explanation:

When two equal magnitude forces are acting on the rod in opposite direction

Then the net force on the system is always zero in that case

so we will have

F - F = 0

now for the system net torque due to these forces is given by

\tau = F(r_1) + F(r_2)

here we know that

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so here we can say that net force is zero on the system while torque is not zero

in all such case object will rotate about a fixed position with change angular speed

3 0
3 years ago
Two identical loudspeakers 2.30 m apart are emitting sound waves into a room where the speed of sound is 340 m/s. Abby is standi
Dimas [21]

Answer:

Abby is standing (4.5^2 + 2.3^2)^1/2   from the far speaker

D2 = 5.05 m from the far speaker

The difference in distances from the speakers is

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n y = 4.5

(n + 1) y = 5.05 for the speakers to be in phase at smallest wavelength

y = .55 m          subtracting equations

f = v / y = 340 / .55 = 618 / sec     should be the smallest frequency

8 0
3 years ago
If a girl is running along a straight road with a uniform velocity 1.5 m /s find her acceleration ​
Phoenix [80]

Answer:

As velocity is uniform then acceleration will be zero.

Explanation:

6 0
3 years ago
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