Thermal energy produced in the collision
Two railroad cars, each of mass 6500 kg and traveling 87 km/h in opposite directions, collide head-on and come to rest. How much thermal energy is produced in this collision?
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A mass m is being lifted upward by means of a vertical spring of force constant k,with a uniform upward acceleration 'a'.If at the instant its velocity is v= A g.√(3m/k) the upper end of the spring is suddenly brought to rest, calculate the
A pipe open only at one end has a fundamental frequency of 256 Hz. A second pipe, initially identical to the first pipe, is shortened by cutting off a portion of the open end. Now, when both pipes vibrate at their fundamental frequencies, a beat
A 5 kg fish swimming 3 m/s swallows an absent minded 1 kg fish at rest. What is the speed of the large fish immediately after lunch?
Given three parallel conducting plates which are aligned perpendicular to the x-axis. They are labeled, from left to right as plate 1, 2 and 3 respectively. The corresponding plate charges are Q1 = -q, Q2 = 0 and Q3 = q. The width of the gap betwe
Speedboat A negotiates a curve whose radius is 114 m. Speedboat B negotiates a curve whose radius is 192 m. Each boat experiences the same centripetal acceleration. What is the ratio vA/vB of the speeds of the boats?
A horizontal bar with a mass m suspended from one end is held by a cord with tension T, fastened at a distance D from the end of the bar that is attached to a wall with a frictionless pin. What is the torque about the pin exerted on the bar by the
A 18.0-V battery is connected to a capacitor, resulting in 45.0 µC of charge stored on the capacitor. How much energy is stored in the capacitor?
Electrodes called paddles are held against the chest on both sides of the heart, and the capacitor is discharged through the patient's chest. Assume an energy of 270 J is to be delivered from a 30.0-µF capacitor. To what potential difference
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