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Raindrops fall 1400 m from a cloud to the ground. If they were not slowed by air resistance, how fast would the drops be moving when they struck the ground?
A certain copper wire has a resistance of 11.0?. What is the resistance of each piece
A 19.8 kg block is dragged over a rough, hor- izontal surface by a constant force of 180 N acting at an angle of angle 32.8? above the horizontal. Find the work done by the normal force
Two shuffleboard disks of equal mass, one orange and the other yellow, are involved in an elastic, glancing collision. Determine the final speed of each disk
A pitot tube on the nose of an airplane measures a stagnation pressure of 2.5 atmospheres. what is the speed of the airplane
Two pendula of equal length b and equal masses m connected by a spring of force constant k. Write the Lagrangian for the system, and use it to derive the equations of motion of the system
Two physical pendulums (not simple pendulums) are made from meter sticks that are suspended from the ceiling at one end. Determine the period of the metal pendulum
A horizontal wire of length 0.50 m, carrying a current of 6.7 A, is placed in a uniform external magnetic field. When the wire is horizontal, Determine the magnitude of the external magnetic field
A muon with rest energy 106 MeV is created at an altitude of 4600 m and travels downward toward Earth's surface. What is the muon's total energy in the Earth observer's frame of reference
A 370-kg sailboat has an acceleration of 0.87 m/s2 at an angle of 64° north of east. Find the magnitude and direction of the net force that acts on the sailboat.
A radiator has an emissivity of 0.95 and its exposed area is 1.23m^2. The temperature of the radiator is 100deg C, What is the heat flow rate from the radiator
In the Bohr model of the hydrogen atom, an electron in the 3rd excited state moves at a speed of 2.43 105 m/s, What is the effective current associated with this orbiting electron
A rectangular loop consists of N = 100 closely wrapped turns and dimensions a = 0.4m and b= 0.3m. What is the expected direction of rotation of the loop
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