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A major-league pitcher can throw a baseball in excess of 45.7 m/s. If a ball is thrown horizontally at this speed, how much will it drop by the time it reaches the catcher who is 15.4 m away from th
A ball is thrown straight upward and rises to a maximum height of 25 m above its launch point. At what height above its launch point has the speed of the ball decreased to one-half of its initial va
A woman on a bridge 96.0 m high sees a raft floating at a constant speed on the river below. She drops a stone from rest in an attempt to hit the raft. The stone is released when the raft has 5.30 m
A juggler traveling in a train on level track throws a ball straight up, relative to the train, with a speed of 6.40 m/s. The train has a velocity of 23 m/s due east. (a) As observed by the juggler,
Assume an energy of 345 W s is to be delivered from a 33.0 µF capacitor. To what potential difference must it be charged?
The heat transferred from the gas during compression flows to heat reservoir at 25?. Calculate the entropy change of the gas, the entropy change of the reservoir and S_total
The beam of neutral hydrogen atoms with a speed of 10^4 m/s along the x-axis enters a 1m long region where there is an inhomogeneous magnetic field pointing in the z direction but with a gradient (
An electron initially traveling at a speed of 10^5 m/s enters a region where there is a uniform magnetic field of 2T oriented 45 degrees to its initial velocity. Quantitatively describe the trajecto
A proton moving at a constant velocity of 10^6 m/s enters a region of uniform magnetic field perpendicular to its velocity. If the magnetic field is 5T, find the force on the proton. What will the f
on standing at the edge of a cliff throws a stone horizontally over the edge with a speed of vi = 32.4 m/s. The cliff is h = 62.6 m above a body of water. Determine the coordinates of the stones ini
A uniform 1 T magnetic field is directed vertically downward in a region of space. A proton traveling 10^5 m/s in a horizontal plane and aimed northward enters this region. The initial acceleration
Water drops from the nozzle of a shower onto the floor 185 cm below. The drops fall at regular (equal) intervals of time, the first drop striking the floor at the instant the fourth drop begins to f
A stone is dropped into a river from a bridge 42.5 m above the water. Another stone is thrown vertically down 1.13 s after the first is dropped. Both stones strike the water at the same time. What i
A hot-air balloon is ascending at the rate of 11 m/s and is 59 m above the ground when a package is dropped over the side. (a) How long does the package take to reach the ground? (b) With what speed
A hoodlum throws a stone vertically downward with an initial speed of 12.0 m/s from the roof of a building, 33.0 m above the ground. (a) How long does it take the stone to reach the ground? (b) What
After 7.00 s have elapsed determine its velocity vector and its position vector. Any help understanding how to solve this sort of problem would be appreciated.
Determine the magnitude of the velocity of the third fragment immediately after the explosion.
The unit is electric and utilizes a resistance heater (120 V ac, 3.2 O) to heat the water. Assuming that no heat is lost to the environment, determine the recovery time (in hours) of the unit.
The pressure in the air above the two tubes is now increased from 1.00 atm to 2.00 atm. In which tube does this cause the greatest pressure increase at the bottom of the tube?
The dees are between the poles of an electromagnet where the field has a magnitude of 0.390 T. (a) Find the cyclotron frequency.
An athlete executing a long jump leaves the ground at a 30.9o angle and travels a horizontal distance 7.03m. What was the take-off speed?
How much later (in seconds) should the younger runner start in order to finish the the course at the same time as the old runner?
A rocket, initially at rest on the ground, accelerates straight upward from rest with constant acceleration 29.4 m/s^2. The acceleration period lasts for time 6.00 s until the fuel is exhausted. Aft
A jet airliner moving initially at 300 mi/h due east enters a region where the wind is blowing at 105 mi/h in a direction 36.0 degrees north of east. What is the new velocity of the aircraft relativ
The blocks slide over a surface, along the x axis. The coefficient of kinetic fiction between the blocks and the surface is (a) 0 (b) 0.1 What is the force from block A on block B in each case?