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A log is floating on swiftly moving water. A stone is dropped from rest from a 78-m-high bridge and lands on the log as it passes under the bridge. If the log moves with a constant speed of 5.2 m/s, what is the horizontal distance between the log and the bridge when the stone is released?
a proton mass m 1.673 x 10-27 kg is bound in a finite square well of width 4fm. the depth of the well is six times the
A parallel capacitor has plates 2.0cm x 3.0cm. The plates are separated by a 1.0mm thick piece of paper. Find the capacitance of this device
The wave reflects from the speeder's car and returns to the police car, where its frequency is measured to be 280 Hz less than the emitted frequency. Find out the speeder's speed with respect to the ground.
A small container of water is placed on a carousel inside a microwave oven, at a radius of 14.0 cm from the center. What angle does the water surface make with the horizontal
An objects average density ? is defined as the ratio of its mass to its volume. What is the earth's average density
a sea divers suit has a thickness of 5 mm and is made of a material with thermal conductivitynbspof 0.05 wmk. if the
An 1100 kg airplane starts from rest; 7.1s later it reaches its takeoff speed of 40m/s. What is the average acceleration of the airplane during this time?
A 225 kg projectile, fired with a speed of 109 m/s at a 66.0 angle, breaks into three pieces of equal mass at the highest point of its arc (where its velocity is horizontal). Determine the energy released in the explosion
On a winter day heat leaks out of a house at the rate of 2.5x10^4 kcal/h. At what rate does this process produce entropy
A flat puck with mass M=.10kg is rotated in a circle with radius R=.20 m on a frictionless air-hockey tabletop at constant speed. then what is the weight G=mg of the dangling block
A cylindrical beaker of height 0.100 and negligible weight is filled to the brim with a fluid of density = 890 . When the beaker is placed on a scale, its weight is measured to be 1.00 .(Figure 1)
A helicopter lifts a 72 kg astronaut 15 m vertically from the ocean by means of a cable. How much work is done on the astronaut by the force from the helicopter
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