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A 2kg box is released, from rest, at the top of a rough circular track of radius 10cm. As the box reaches the bottom of the track, it is moving at 15 m/s. using g= 10 m/s^2, calculate the work done by all resistive forces (such as friction) during this slide from top to bottom.
A system does 4.3 x10^4 J of work, and 7.7 x10^4 J of heat flows into the system during the process
A skier is sliding downhill at 5 m/s when she reaches an patch on which her skies move freely with neglegible friction. What is the speed of the skier at the bottom of the icy patch
An inductor that has an inductance of 15.0 H and resistance of 30.0 W is connected across a 100-V battery. Calculate the rate of increase of the current
A wheel has eight spokes and a radius of 33.0 . It is mounted on a fixed axle and is spinning at 2.80 . You want to shoot a 38.0 long arrow through the wheel, parallel to this axle, without hitting any of the spokes. Assume that the arrow and the ..
Assume you are 65.00 cm from a plane mirror. What area of the mirror is used to reflect the rays entering one eye from a point on the tip of your nose if your pupil diameter is 5.0 mm.
Biometric measurements indicate that each hand typically makes up about 1.25% of body weight. What horizontal force should her wrist exert on her hand.
A man takes his dog out for a walk. The dog has no legs and is dragged along sidewalk on a little sled (mass of dog + sled = 13.0kg). The sidewalk exerts a frictional force of 14.0N.
Find the Band Structure and Band Occupancy
A car of mass 1286.6 kg is moving at a speed of 67.6 mph when it misses a curve in the road and hits a bridge piling, how much average power (in watts) is expended in this interval
In a diesel engine, the piston compresses air at 302 K to a volume that is one-sixteenth of the original volume, What is the temperature of the air after the compression
two point charges lie on the x-axis: .30 micro C at x=.15m and .11micro C at x=.70. find the place where the electric field is zero
Three balls A, B, and C, with masses of 2.7 kg, 1.1 kg, and 1.2 kg, respectively, are connected by massless rods, find the acceleration of the center of mass of the three-ball system
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