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A 0.21-kg apple falls from a tree to the ground, 4.0 m below. Ignoring air resistance, determine the apple's kinetic energy, K, the gravitational potential energy of the system, U, and the total mechanical energy of the system, E, when the apple's height above the ground is (a) 4.0 m, (b) 3.0 m, (c) 2.0 m, (d) 1.0 m, and (e) 0 m. Take the ground level to be y = 0.
A block of ice with mass 2.00 kg slides 0.890m down an inclined plane that slopes downward at an angle of 28.3 degrees below the horizontal. If the block of ice starts from rest, what is its final speed
A series DC circuit contains a 4mH inductor and an 80 ohm resistor in series with a 12V battery. What is the time constant for the circuit? What are the initial and final currents?
In the above animation a massive block is attached to a spring. It is sliding back and forth on a frictionless table. The spring has a spring constant 250 N/m. Determine the mass of the block
How long does the projectile remain in the air - At what horizontal distance from the firing point does it strike the ground?
A 3.0-kg block is pulled along a FRICTIONLESS surface with a force of 42N. Attached to that block with a light string is another 3.0-kg block. what is the tension in the string
What is the velocity of the ice skater after throwing the snowball? Disregard the friction between the skates and the ice. m/s to the right
A photon of initial energy 0.10 MeV undergoes Compton scattering. After scattering, the photon's energy is 0.09 MeV. Find the recoil energy of the electron
Calculate the point of no return for an airport runway of 1.47 mi in length if a jet plane can accelerate at 11.5 ft/s2 and decelerate at 6.75 ft/s2
a spring is hung from a ceiling and an object attached to its lower end stretches the spring by a distance of 5.00 cm
what would be the restoring force on the pendulum at an angle of 6.24deg from the equilibrium
a certain quantity of steam has a temperature of 109.1 degc. to convert this steam into ice at 0.0 degc energy in the
A motor (mass of 180kg) sits on a horizontal 2.25 m masslessplank. The motor is 1.00 m from one end of the plank. Find the supporting force applied at each end of the plank to keep thesystem in equilibrium
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