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A baseball team is practicing throwing balls vertically upward to test their throwing arms. A player manages to throw a ball that reaches a maximum altitude of 10 m above the launch point, before falling back down. The acceleration due to gravity is 9.80 m/s 2 .
An automobile leaves St. John's University, first going due south at 88 km/h for 2 hours, and then turns on a road heading 20 degrees east of north at 55 km/h for 1.5 hours.
An elevator together with its passenger's weights 5000 N. At a certain instant, the tension in its supporting cable is 6000 N. Determine the magnitude and direction of its instantaneous acceleration.
A 1300-kg car initially has a velocity of 22.2 m/s due south. It brakes to a stop over a 180-m distance.
A car is initially moving at 35 km/h along a straight highway. To pass another car, it speeds up to 135 km/h in 10.5 seconds at a constant acceleration.
Batman and Robin are attempting to escape that dastardly villain, the Joker, by hiding in a large pool of water (n=1.33). The Joker stands gloating at the edge of the pool.
question in a double-slit experiment with monochromatic light a thin sheet of transparent material of thickness t and
A 1kg block on a horizontal surface is attached to a light horizontal spring of force constant 500N/m. The block is pulled sothat the spring is stretched 5cm from its equilibrium. The block is then released from rest.
A sailor strikes the side of his ship just below the waterline. Hehears the echo of the sound reflected from the ocean floor directlybelow 1.87 s later. How deep is the ocean at this point?
A 2.4kg toy locomotive is pulling a 1.6kg caboose. The frictional force of the track on the caboose is 0.54N backward all along the track. If the train is accelerating forward at 3 m/s2, what is magnitude of the force exerted by the locomotive on ..
Positive point charges q and 2q are located at x = 0 and x = 3d, respectively. What is the electric field at x = d (point P)? (Use any variable or symbol stated above along with the following as necessary: k for Coulomb constant.) magnitude E = di..
Implement the Wilson-Sommerfeld quantisation condition for a particle moving in a harmonic potential U=kx^2/2.
An object is solid throughout. When the object is completely submerged in ethyl alcohol, its apparent weight is 14.9 N. compute the volume of the object
A bus was initially traveling with a velocity of 50 km/hr east. Later it was observed traveling with a velocity of 100 km/h north. What was the change in velocity of the bus
A particle moves horizontally in uniform circular motion, over ahorizontal xy plane. What are thecoordinates of the center of the circular path
An object of mass m moves in a circular orbital under the influence of an harmonic oscillator potential U(r)=1/2(alpha)r^2, Determine the energy of the orbiting object
A toy rocket moving vertically upward passes by a 2.1m -high window whose sill is 8.0m above the ground. What was the launch speed of the rocket
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