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Find the velocity with which he strikes the water. [Hint: When the diver reaches the water, his displacement is y = -4.0 m (measured from the board), assuming that the downward direction is chosen a
A hydraulic press consists of two vertical cylinders of circular cross-sectional areas 6cm2 and 120cm2 that are joined at the base. The press contains oil of relative density 0.93, and the friction b
A point charge of -1.5 C is located at the origin. A second point charge of 10 C is at x = 1 m, y = 0.5 m. Find the x and y coordinates of the position at which an electron would be in equilibrium.
A proton is located at the origin, and a second proton is located on the x-axis at x = 5.38 fm (1 fm = 10-15 m). (a) Calculate the electric potential energy associated with this configuration.
A ski gondola is connected to the top of a hill by a steel cable of length 620 M and diameter 1.5 cm. as the gondola comes to the end of its run it bumps into the terminal and sends a wave along the
Two positive point charges are held in place, 0.60 m apart. They are then moved so that their electric potential energy doubles. What is the new separation between the charges?
What is the change in the gravitational potential energy of the snowball-Earth system during the flight?
If the ball is in contact with the wall for 0.0122 s, what is the average magnitude of acceleration of the ball while it is in contact with the wall?
What if both are heated together, what temperature must they both reach so that the ring just slips over the rod? Would this latter process work? [coefficient of linear exp for alum is 2.4 e-5, for
The amplitude decreases to 1.087 cm in 4.57 s, what is the damping constant for the system?
A uniform circular disk whose radius R is 50.5 cm is suspended from a point on its rim. At what radial distance r < R is there a point of suspension that gives the same period?
A large solar panel on a spacecraft in Earth orbit produce 1.0kW of power when the panel is turned toward the sun. What power would the solar cell produce if the spacecraft were in orbit around Satu
A bomber on a bomb run is traveling at a horizontal velocity of 152 meters per second, and flying at an altitude of 1500 m. Find the time the bomb will take to fall.
The ratio of the velocity of the object, at a very large distance from the planet, to the escape velocity for the planet is closest to:
What velocity and heading will the swimmer have to use to get 50 meters upstream from directly across the river in 19.4 seconds?
A hydraulic press consists of two vertical cylinders of circular cross-sectional areas 6cm2 and 120cm2 that are joined at the base. The press contains oil of relative density 0.93, and the friction
a) calculate the upward force on the larger piston due to a downward force of 30N on the smaller one.
A ball is thrown straight up in the air with a velocity of 40 m/s. What is the speed of the ball right before it hits the ground? (neglecting air resistance) How long will the ball be in the air?
Determine the maximum speed of the blocks if the spring is compressed the distance foundi n part (d).
The human body can survive an acceleration trauma incident (sudden stop) if the magnitude of the acceleration is 250m/s2. If you are in an automobile accident with an initial speed of 105km/hr (65 m
A proton accelerates from rest in a uniform electric field of 640 N/C. At some later time, its speed is 1.20X10^6 m/s. Find the magnitude of the acceleration of the proton. How long does it take the
One diver runs off the edge of the cliff, tucks into a "ball," and rotates on the way down with an average angular speed of 1.6 rev/s. Ignore air resistance and determine the number of revolutions s
A skier starts from rest at the top of a hill. The skier coasts down the hill and up a second hill. The crest of the second hill is circular with a radius of 36 m. Neglect friction and air resistanc
When 117 J of energy is supplied as heat to 2.00 moles of an ideal gas at constant pressure, the temperature rises by 2.00 K. Calculate the molar heat capacity at constant pressure, CP,m and the mol
The electric field midway between two equal but opposite point charges is 883 , and the distance between the charges is 22.8 . What is the magnitude of the charge on each?