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The turntable of a record player has an angular speed of 9.7 rad/s at the instant it is switched off. 4.0 s later, the turntable has an angular speed of 1.1 rad/s. Through how many radians does the turntable rotate from the time it is turned off until it stops? (Assume constant angular acceleration.)
q. an airplane takes off from the only airstrip in a remote area of canada flies 68.0deg north of east for 177 km then
Two objects with masses of 3.90 kg and 6.40 kg are connected by a light string that passes over a frictionless pulley, Determine the acceleration of each object
A standing wave is set up in a 200-cm string fixed at both ends. The string vibrates in 5 distinct segments when driven by a 120-Hz source. What is the fundamental frequency for the string
A satellite is in a circular orbit around the Earth at an altitude of 3.28 106 m. (a) Find the period of the orbit. (Hint: Modify Kepler's third law: T2 = 4?2 GMS r3 so it is suitable for objects orbiting the Earth rather than the Sun.
An asteroid orbits the Sun at a constant distance of 3.540e+11 meters. The Sun's mass is 1.99×1030 kg. What is the orbital speed of the asteroid
A hydrogen atom in its first excited state absorbs a photon with an energy of 59.0 eV, What is the kinetic energy of the ejected electron
Two coils have the same number of circular turns and carry the same current. Each rotates in a magnetic field acting perpendicularly to its axis of rotation, What is the radius (in cm) of coil 2
An object is thrown straight upwards with a speed of 40.8 m/s from the top of a 59.2 m tall building. What is the maximum height (from the ground) that the object reaches
Two point charges, +3.09 µC and -6.05 µC, are separated by 1.33 m. What is the electric potential midway between them?
A rock is dropped off the side of a bridge and hits the water below 5.7 s later. What is the height of the bridge above the water
A battery of internal resistance r = 0.2 and emf E = 12.0 V. If the battery is charged by an external source with a charging current of 1.2 A. What is the potential difference across the battery
The human lungs can function satisfactorily up to a limit where the pressure difference between the outside and inside of the lungs is 1/22 of an atmosphere. how far below the water can she swim
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