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A sealed, evacuated 1.11 liter container initially contains 0.32 liter of liquid helium. As the contents of the container come into thermal equilibrium with the surroundings, the liquid helium vaporizes and turns into gas. If the temperature of the laboratory is 21.2°C, what is the pressure of the helium gas inside the container? (Note: The density of liquid helium is 122.1 kg/m3.)
How many elections Paris would we have to remove before the electrostatic repulsion between the earth and moon would go over their gravitational attraction.
A 3.80-g bullet moves with a speed of 180m/s perpendicular to the earth's magnetic flied of 5.00X10^-5T. If the bullet possesses a net charge of 8.0X10^-9C by what distance will it be deflected from it's path due to it's magnetic field after it has t..
Will is attempting to swim to a dock directly across a river from his current position. In what direction should he swim relative to his intended path
In figure, a ball isthrown up onto a roof, landing some time later at heighth = 20.0 m above and d = 30.0 m horizontally from the release point.The ball's path just before landing is angled at θ =60.0o with the horizontal roof.
You have a compound microscope with a barrel of length 163 mm. Find the total angular magnification of the microscope for a person whose near point is 25.0 cm away
Adisa pulls a 40-N crate up a 5.0-m long inclined plane at a constant velocity. If the plane is inclined at an angle of 37° to the horizontal and there is a constant force of friction of 10 N between the crate and the surface, what is the net change ..
A positive charge of q1 is located 4.59 m to the left of a negative charge q2. The charges have different magnitudes. How far to the left of the negative charge is one spot
After a completely inelastic collision, two objects of the same mass and same initial speed are found to move away together at 1/2 their initial speed
A 0.16kg baseball is hit into the air. When its 6.68 meters above the ground traveling 17.2 m/s at a 55 degree angle. What is its mechanical energy?
The incline has height of 2.1 m and is at an angle of 19 degrees above the horizontal. It is allowed to slide down the incline. What are they at the bottom of the incline
If two sound waves, one in air and one in (fresh) water are equal in intensity, what is the ratio of the pressure amplitude of the wave in water to that of the wave in air? Assume the water and the air are at 20°C.
A magician pulls a tablecloth from under a 200 g mug located 30.0 cm from the edge of the cloth. The cloth exerts a friction force of 0.100 N on the mug, and the cloth is pulled with a constant acceleration of 3.50 m/s2.
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