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(a) An ideal gas occupies a volume of 2.8-cm3 at 20°C and atmospheric pressure. Determine the number of molecules of gas in the container.
(b) If the pressure of the 2.8-cm3 volume is reduced to 1.2 10-11 Pa (an extremely good vacuum) while the temperature remains constant, how many moles of gas remain in the container?
A mass system with a spring constant of 66.0 N/m undergoes simple harmonic motion with a period of 0.628 s. what is the total energy of the oscillation
A 70kg skateboarder comes over the top of a hill at 6.0m/s and reaches 12m/s at the bottom. Find the total work done on the skateboarder
The frequency of a mass attached to a spring is 4Hz. At time t = 0, the mass has an initial displacement of 0.200m, When will the mass first reach a turning point
A supertanker with the mass of 4.67 × 10^8 kg is moving with a constant velocity. Its engines generate a forward thrust of 8.71 × 10^6 N.
The drawing shows a square, each side of which has a length of L = 0.25 m. Find the electric potential energy of a third charge
A wire is formed into a circle having a diameter of10.7cm and is placed in a uniform magnetic field of3.16mT. Find the maximum torque on the wire
A hydraulic jack has an input piston of area 0.050 m^2 and an out put piston of area 0.70m^2. How much force on the input piston is required to a lift a car weighing 1.2 * 10^3 N
An electron traveling to the left with velocity 5*10^5m/sec, and making an angle of 30 degrees with the horizontal, moves into a magnetic field of 1.0T directed toward the observer. what is the magnitude and direction of the magnetic force on the ..
Tarzan, whose mass is 80.0 kg, swingsfrom a 3.00 m vine that is horizontalwhen he starts. What is the height of the highest tree climb
An object with total mass mtotal = 14.5 kg is sitting at rest when it explodes into three pieces. Calculate the increase in kinetic energy of the pieces during the explosion
When both cars increase their speed by 7.0m/s , they then have the same kinetic energy. What were the original speeds of the two cars
An undamped 1.58-kg horizontal spring oscillator has a spring constant of 22.8 N/m. What is the oscillator\'s total mechanical energy
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