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Two carts with masses m1 = 2:5 kg and m2 = 5:5 kg are movingtowards each other with velocities v1 = 4 m=s and v2 = 3 m=s.
a) If the collision isinelastic (two carts move together after the collision) find the velocity of the combined carts.
A particular engine has a power output of 4.27 kW and an efficiency of 22.2%. The engine expels 7236 J of energy as heat in each cycle. Find the energy absorbed in each cycle
A high-speed flywheel in a motor is spinning at 450 rpm when a power failure suddenly occurs. The flywheel has mass 37.0kg and diameter 71 cm. The power is off for 27.0s and during this time the flywheel slows due to friction in its axle bearings...
A laser light has a wavelength of 670 nanometers and the separation between the two first order diffraction minima is 11 cm. Calculate the slit width and slit separation
A hawk is flying horizontally at 17.0m/s in a straight line, 160 m above the ground. A mouse it has been carrying struggles free from its grasp. The hawk continues on its path at the same speed for 2.00s before attempting to retrieve its prey.
a wire 2.0mm in diameter and 4cmlong is connected to a 12v battery. if the resistivity of the wire is 3.5 x 10-5 ohm-m
A box weighing 250-N is supported by the cable; the tension in the cable is 120-N. How much time elapses as box falls (starting from rest) 15.0 m.
A disk of radius R = 9 cm is pulled along a friction less surface with a force of F = 15 N by a string wrapped around the edge. At the instant when d = 28 cm of string has unwound off the disk, what is torque exerted about the center of the disk.
a 10 cubic meter particulate air sample collects 0.1 millicurie of cobalt-60 on its filter. what is the airborne
for a single isolated point charge carrying a charge of q 68.7 pc one equipotential surface consists of a sphere of
A Carnot engine performs work at the rate of 480 kW while using 760 kcal of heat per second. If the temperature of the heat source is 571°C, at what temperature (in Celsius) is the waste heat exhausted
A rifle with a barrel length of 61.0 cmfires a 10.0 g bulletwith a horizontal speed of 360 {\rm m/s}. How long does it take the bullet to come to rest
Converting sunlight to electricity with solar cells has an efficiency of 15%. It's possible to achieve a higher efficiency (though currently at higher cost) by using concentrated sunlight as the hot reservoir of a heat engine. What is the theoreti..
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