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After falling from rest from a height of 29 m, a 0.49-kg ball rebounds upward, reaching a height of 19 m. If the contact between ball and ground lasted 1.8 m, what average force was exerted on the ball?
Visible light passes through a diffraction grating that has 900 slits per centimeter, and the interference pattern is observed on a screen that is 2.56 m from the grating. In the first-order spectrum, maxima for two different wavelengths are separ..
The acceleration of a particle is given by ax(t)=? 2.10m/s2 +( 3.03m/s3 )t, What will be the velocity at time t = 3.94s
At an intersection of hospital hallways, a convex mirror is mounted high on a wall to help people avoid collisions. Using a scales 3-ray diagram, locate and describe the image of a patient 10.0 m from the mirror.
The mast of a sailboat is supported at the bow and stern by stainless steel wires, the forestay and backstay, Find the tension in the backstay and the force that the mast exerts on the deck
Assuming that the atom was initially at rest, determine the recoil speed of the hydrogen atom when it emits this photon
A device is turned on and 3.00 A flows through it 0.100 ms later. What is the self-inductance of the device if an induced 150 V emf opposes this
A 1000-turn coil of wire that is 2.4cm in diameter is in a magnetic field that drops from 0.15T to 0 T in 11ms, compute the emf of the coil
Two objects of masses m1=0.56 kg and m2=0.88 kg are placed on a horizontal frictionless surface and a compressed spring of spring constant k=280 N/m is placed between them. find the final velocity of each object
A 0.200H inductor is connected in series with a 85.0? resistor and an ac source. Derive an expression for the voltage vR across the resistor
A balloon is filled with helium at a pressure of 2.4 x 10^5 Pa. The balloon is at a temperature of 18 degrees Celsius, How many helium atoms are contained in the balloon
A coil is placed in a changing magnetic field and an emf is induced. What happens to induced emf if the rate of change of magnetic field quadruples.
Two point charges have a total charge of 515 µC. When placed 1.15 m apart, the force each exerts on the other is 24.4 N and is repulsive. What is the charge on each.
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