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Problem: Two cars collide head-on while each is traveling at 80 km/hr. Suppose all their kinetic energy is transformed into the thermal energy of the wrecks.
What is the temperature increase of each car? You can assume that each car's specific heat is that of iron.
Show all work, use additional paper if necessary.
A ball of mass 2 kg is thrown by an initial velocity of 5 m/se cat an angle of 40o above the horizontal, from the edge of a building 9 m high. At the same instant another ball of mass 4 kg is thrown from the same height at the similar speed at an ang..
a 12.0 kg mass lies at x=-80.0 cm. A 21.0 kg mass is at x= 70.0 cm. The 12.0 kg mass is not moved to a different point on the x-axis. There is not a zero net force on the 10.0 kg mass. What is the new location of the 12.0 kg mass
A 33.4 cm focal-length converging lens is 24.8 cm behind a diverging lens. Parallel light strikes the diverging lens. What is the focal length of the diverging lens
If a current of 8.3 A is drawn from the battery when a resistor R is connected across the terminals ab of the battery, what is the power dissipated by the resistor R
What centripetal force will the ride exert. How far should the stone fall so that the pulley has 6.50 J of kinetic energy.
Monochromatic light is incident from the top onto two glass plates, as the drawing shows. What happens to the bright fringes
a student m 75 kg falls freely from rest and strikes the ground. during collision with the ground he comes to rest in a
What are the x and y acceleration components of a 5 kg particle subject to Force 1 (F1x = 4.6 N and F1y= -2.1 N) and Force 2 (F2x=-2.8 N and F2y= 5 N)
While a roofer is working on a roof that slants at 42.0 degrees above the horizontal, If it starts 4.35 m from the lower edge of the roof, how fast will the toolbox be moving just as it reaches the edge of the roof if the kinetic friction force on ..
two long parallel wires each carry 2.8a in the same direction with their centers 1.8cm apart. express your answer to
An engine does 18600 J of work and rejects 6860 J of heat into a cold reservoir whose temperature is 281 K. The smallest possible temperature of the hot reservoir is
Which of the following sets of variables result in a linear graph when plotted? (Choose as many as two)
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