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A monatomic ideal gas in a rigid container is heated from 212 K to 305 K by adding 7840 J of heat. How many moles of gas are there in the container?
A thin, flexible metal plate attached at one end to the platform, can be used to measure mass. When the free end of the plate is pulled down and released, it vibrates in simple harmonic motion with a period that depends on the mass attached to the pl..
A 20.00 kg wood ball hangs from the 1.10 long wires. The maximum tension the wire can withstand without breaking is 600 N. A 0.710 kg projectile travelling horizontally hits and embeds itself in the wood ball. What is the largest speed this projectil..
When she tightens the string slightly, she hears 6 beats/s. What is the frequency of string now.
From point B, the ball was in the air 2.0 seconds and traveled a horizontial distance of 16.2 meters before hitting the ground. Illustrate with what velocity did the ball leave her hand at point B?
A factory worker pushes a 30kg crate a distance of 4.50 meters along a level floor at constant velocity by pushing it downward at an angle of 30degrees below the horizontal. The coefficient of kinetic friction between the crate and the floor is 0...
Consider a flagpole (mass 20kg and length 10m) attached to the wall by a cable, What is the magnitude and direction of the force exerted by the hinge on the flagpole
A proton moving at 3.1×105m/s to the right enters a region where a uniform electric field of magnitude 53kN/C points to the left
at the surface of the earth what is the force on the rocket due to gravity when the rocket has reached an altitude of 1.2 x 104 km
The ramp is inclined at 30.0° with respect to the horizontal. The coefficient of kinetic friction between the log and the ramp is 0.800, and the log has an acceleration of 0.800 m/s2. Find out the tension in the rope.
A dentist uses a small mirror of radius 45 mm to locate a cavity in a patient's tooth. If the mirror is concave and is held 14 mm from the tooth, what is the magnification of the resulting image.
An aluninum wire has a length of 8 m and a cross-sectional radius of 0.004 m. Calculate the weight of a hanging object
A simple Pendulum has a mass of 2.00 kg. The mass has a speed of 3.00 m/s, What is the maximum height (from the lowest position) the pendulum will reach
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