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A package is dropped from a passing plane (moving in the horizantal direction) and produces a projectile motion as it is falling to the ground. If it takes the package only 30.12 seconds until it h
A point charge is distance from the center of a dipole consisting of charges separated by distance . The charge is located in the plane that bisects the dipole. At this instant, assuming r>>s
A boy is attempting to swim directly across a river; he is able to swim at a speed of 0.421 m/s relative to the water. The river is 2.48 m wide and the boy ends up at 4.77 m downstream from his sta
A 3.10 box that is several hundred meters above the surface of the earth is suspended from the end of a short vertical rope of negligible mass. A time-dependent upward force is applied to the upper
A copper block rests 30.0 cm from the center of a steel turntable. The coefficient of static friction between the block and the surface is 0.53.The turntable starts from rest and rotates with a con
A spring cannon is located at the edge of a table that is 2 m above the floor. A steel ball is launched from the cannon with speed vi at 40.0° above the horizontal. Find the horizontal position
A sound wave traveling at 341 m/s is emitted by the foghorn of a tugboat. An echo is heard 3.20 s later. How far away is the reflecting object?
In the list below are described five situations. In some of the situations, the mass is at rest and remains at rest. In other situations, at the instant described, the mass is in the middle of an o
Calculate the speed of the fetal heart wall at the instant this measurement is made.
A piece of wood is 6.00m long, 0.250m wide and 0.080m thick. Its density is 600kg/m cubed. what volume of iron ( P iron = 7.8 x 10 cubed kg/m cubed) must be fastened underneath the wood to sink it
Two 2.0 kg plastic garbage cans are sitting 2.6 meters apart on a sticky classroom floor (coefficient of static friction μs = 0.40). They are not moving. If the first one has a charge of 10 μC
There is no buildup of charge inside the box. After 10 seconds has elapsed, how much charge has flowed out of the box through the blue wire?
A driver in a car traveling at a speed of 56.0 mi/h sees a deer 116 m away on the road. Calculate the minimum constant acceleration that is necessary for the car to stop without hitting the deer (a
A cloud that is about to unleash a lightning bolt has a charge of +24 coulombs. In stormy weather, powerful updrafts of air carry electrons from one place in the storm system to another. If the clo
A sound wave in air has a frequency of 294 Hz and travels with a speed of 343 m/s. How far apart are the wave crests (compressions)?
The difference in potential between the ac- celerating plates of a TV set is about 26 kV. The distance between these plates is 1.7 cm. Find the magnitude of the uniform electric field in this regio
Four particles with charges of 8.9 μC, 3.9 μC, 1.6 μC and -11 μC are placed at the corners of a "4.2 m × 4.2 m" square. The acceleration of gravity is 9.81 m/s2 and the value of Co
Find the maximum height reached by the camera with respect to the ground. The acceleration of gravity is 9.8 m/s^2.
Two identical aluminum objects are insulated from their surroundings. Object A has a net charge of excess eletrons. Object B is grounded. Which object is at a higher potential?
During the acceleration, what is the force on the boat and trailer? (A positive force means a force in the direction of motion.)
Find the magnitude of the normal force exerted on the crane by the ground while the wrecking ball is moving upward at a constant speed of v = 1.49 m/s.
A car has mass M = 1200 kg, and the driver has mass m = 70 kg. The car is initally traveling at 15 m/s. Then the driver steps on the brakes, and the car stops in 4 seconds. Calculate the force on th
An electron with a speed of 3.28 × 108 cm/s in the positive direction of an x axis enters an electric field of magnitude 1.26 × 103 N/C, traveling along a field line in the direction th
A gun shoots bullets that leave the muzzle with a speed of 346 m/s. If a bullet is to hit a target 116 m away at the level of the muzzle, the gun must be aimed at a point above the target. How far
To win the game, a place kicker must kick a football from a point 22m from the goal and the ball must clear the crossbar, which is 3.05m high. When kicked, the ball leaves the ground with a speed of