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A box slides across a frictionless floor with an initial speed v = 2.5 m/s. It encounters a rough region where the coefficient of friction is µk = 0.1.
a) What is the shortest length of rough floor which will stop the box?
b) If instead the strip is only 1.59 m long, with what speed does the box leave the strip?
Unpolarized light passes through two polarizers in turn with polarization axes at 33° to one another. What is the fraction of the incident light intensity that is transmitted
When light strikes the surface between two materials from above, the Brewster angle is 61.0°. What is the Brewster angle when the light encounters the same surface from below
A simple circuit is set up that only consists of a 12 V battery connected to a light bulb with a resistance of 9 Ohms. What current flows through the light bulb
If a 62.6 kg runner dissipates a power of 60.9 W during a race, explain how fast is the person running? Assume a running step is 1.50m in length
how high above the target must the rifle barrel be pointed.
An arrangement of two pulleys, as shown in the figure, is used to lift a 46.4-kg mass a distance of 3.20 m above the starting point. What is the mechanical advantage of this system
A 1kg ball released from horizontal attatched to a 2.5 m string collides ellastically with a 2 kg block at rest. what is the speed of the block after the collision.
Two resistors are connected in a series to a 15V battery. The voltage drop across the first resistor is 3.5V, What is the resistance of the two resitors
A 0.500 kg particle moving along a straight line with a position vector given by r = (-2.00t2 - t) i(hat) + 5.00 j(hat), with r in meters, Obtain the kinetic energy of this particle
The drawing shows the front and rear sprockets of a bicycle. Assume the chain does not slip or stretch. How much time is required to double the speed of the rear sprocket
A car of mass M = 1200 kg traveling at 45.0 km/hour enters a banked turn covered with ice. The road is banked at an angle theta, and there is no friction between the road and the car's tires.
The super ball is not replaced by a clay ball the same size and mass. The ball is dropped from the same height and it sticks to the table. Calcluate the impulse exerted on the clay ball
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