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One mole of an ideal diatomic gas is heated from a temperature of 22 degrees C to a temperature of 95 degrees C. How much heat in joules must be supplied if the volume is kept constant during heating?
When some stars use up their fuel, they undergo a catastrophic explosion called a supernova. This explosion blows much or all of a star's mass outward, in the form of a rapidly expanding spherical shell.
An Olympic skier whose mass is 50 kg is moving at 25 m/s down a 20degree slope encounters a region of wet snow of coefficient of frictio Uk=0.55 which reduces her speed. Find the acceleration of the skier
A new plant oil is discovered that is easy to recover from the plant and it might be a useful fuel. A question is the energy density of the fuel. Calculate the energy-density of this "new fuel"
One piece of 50 g ice at 0C is added to m grams of water at 25C. The system is insulated from outside and the exchange of heat is limited to ice and water only. find the total change in entropy
A 6.0 kg block of aluminum is heated from 20°C to 90°C at atmospheric pressure. Find the work done by the aluminum
A white billiard ball with mass mw = 1.31 kg is moving directly to the right with a speed of v = 2.87 m/s, What is the magnitude of the final total momentum of the system
A ballistic pendulum apparatus has a hinged catcher of mass 250.0 g. What is the muzzle velocity of the gun
Three forces act on an object. A 2 N force acts due east and a 3 N force acts due north. If the net force on the object is zero, what is the magnitude of the third force?
You are holding a 35 kg dumbbell straight out at arm's length. Assuming your arm is 0.74 m long, what torque is the dumbbell exerting on your shoulder
A 2kg box slides along a frictionless surface with a speed of 15m/s and approaches a horizontal spring with a spring constant of 2000N/m. If one end is fixed, How far will the spring compress in stopping the box
A 1N apple which is 5 m from the ground breaks from its stem and falls to the ground. When it has fallen a distance of 2 meters, calculate its mechanical energy relative to the ground
An isotope of beryllium with an atomic mass of 7.017u emits a gamma ray and recoils with a speed of 2.19m/s. find the wavelength of the gamma ray
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