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A 1200 {\rm kg} car moving at 88 {\rm km/h} collides with a 7600{\rm kg} truck moving in the samedirection at 65 {\rm km/h} . The two stick together,continuing in their original direction at 68 {\rm km/h}.
A) Determine the kinetic energy of the center ofmass of the (car + truck) system.
B) Determine the internal energy of the (car + truck) system before the collision.
C) Determine the internal energy of the (car + truck) system after the collision.
In a model ac generator, a 498 turn rectangular coil, 10.0 cm by 29 cm, rotates at 122 rev/min in a uniform magnetic field of 0.62 T. What is the maximum emf induced in the coil
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A uniform rod (L= 3 m) and mass (M = 1 kg) is pivoted about a horizontal frictionless pin through one end. What is the angular speed of the rod when it passes through the vertical position
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A star moving away from the Earth at 0.320c emits radiation that we measure to be most intense at the wavelength 530 nm. Determine the surface temperature of this star
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The energy gap in silicon is 1.1eV. The average electron effective mass is 0.31m, where m is free electron mass. Calculate the electron concentration in the conduction band of silicon at T=300K
A woman on a bridge 104 m high sees a raft floating at a constant speed on the river below, She drops a stone from rest in an attempt to hit the raft, Find the speed of the raft
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