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A spring with the spring constant K=14N/m is compressed 15cm, What is the Elastic potential energy stored in the spring?
Two canoes are tied together and traveling down a river with the current. Spotting a waterfall, the two canoeists cut the rope, What is the combined mass of this canoe and rider
It takes 150 minutes for a middle-aged physics professor to ride his bicycle up the road to Alpe d'Huez in France. What is the bicyclist's average power output
The armature of an ac generator is a rectangular coil, 2.0 cm by 6.0 cm with 80 turns. at what angular speed is the armature rotating
An atom is ionized so that it has only one electron. When the electron drops from the n = 4 shell to the n = 1 shell, an X-ray of wavelength 155.61 pm is emitted. What is the atomic number
Planet Z is 1.00x10^4 km in diameter. The free fall acceleration on Planet Z is 5.00 m/s^2. What is the free fall acceleration
A kicker punts a football from the very center of the field to the sideline 37 yards downfield. What is the direction of the net displacement of the ball?
A particle of rest mass m0 moving with a speed of 0:8c collides and sticks to a particle of rest mass 3m0 that is initially at rest. What is the kinetic energy of the initial moving particle
(8c1p14) Time standards are now based on atomic clocks. A promising second standard is based on pulsars, which are rotating neutron stars, What is the mass of gasoline (? = 0.680 g/cm3) in a 94.6 L gasoline tank? (kg)
A guitar string is tuned to an E4, The concert pitch standard A440 has a frequency of 440 Hz. What is the wavelength of this pitch in air
On an old-fashioned rotating piano stool, a woman sits holding a pair of dumbbells at a distance of 0.555m from the axis of rotation of the stool. Compute the kinetic energy of the system before the dumbbells are pulled in
Two vectors, A and B are added by means of vector addition to give a resultant vector R:R=A+B. What are the maximum and minimum possible values for the magnitude of R
Two wires, each of length 1.2 m, are stretched between two fixed supports. Find the speed at which the individual waves travel on each wire
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