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A outfielder throws a 0.150kg baseball at a speed of 4.0m/s and an initial angle of 30.0 degrees. What is the kinetic energy of the ball at the highest point of its motion?
A shopping bag is hanging straight down from your hand as you walked across a horizontal floor at a constant speed. Does the force that your hand exerts on the bag's handle do any work? Explain. Doe
It started from a rest (a speed of 0m/s) and reached the bottom of the incline moving with a speed of 2.0m/s. What is the average speed of the soup can?
A flat sheet of crown glass has a thickness of 2.3 cm. It is on top of a flat sheet of crystalline quartz that has a thickness of 3.6 cm. Light strikes the crown glass perpendicularly and travels th
The dog is 32.5 m behind the student and running at 6.74 m/s. The tourist reaches the car safely. What is the maximum possible value for d?
A space station in the form of a large wheel, 343 m in diameter, rotates to provide an "artificial gravity" of 9.3 m/s2 for people located at the outer rim. What is the frequency of the rotational m
A 40 kg pole vaulter running at 14 m/s vaults over the bar. Her speed when she is above the bar is 1.0 m/s. Neglect air resistance, as well as any energy absorbed by the pole, and determine her alt
Objects A and B are both positively charged. Both have a mass of 900g but A has twice the charge of B.? When A and B are placed 80.0 cm apart, B experiences an electric force of 0.510 N. How large is
The average force exerted on him by the ground is +18000 N, where the upward direction is taken to be the positive direction. From what height did the student fall? Assume that the only force acting
If a curve with a radius of 85 is properly banked for a car traveling 67 , what must be the coefficient of static friction for a car not to skid when traveling at 95 ?
What is the momentum of the 9000 kg railroad car before the collision? If the two railroad cars couple and move of together after collision, what is their velocity?
Find the magnitude and direction of the electric field at a distance (measured from the common center) of .20m.
Find the total electric flux out of the cylinder out of the ends of the cylinder used as the Gaussian surface in this problem?
A 5.8 g bullet leaves the muzzle of a rifle with a speed of 308 m/s. What force (assumed constant) is exerted on the bullet while it is traveling down the 0.9 m long barrel of the rifle?
If the combined effect of air resistance and rolling friction causes a deceleration of .50 m/s squared, after how long with the car come to a complete stop?
.What is the magnitude of the normal force exerted on the car by the walls of the cylinder at a) point A (at the bottom of the vertical circle)? b) point B (at the top of the vertical circle)?
Calculate the horizontal distance the ball would travel if the same spring were aimed 34.0 deg from the horizontal.
An air-track glider attached to a spring oscillates between the 10.0 {rm cm} mark and the 58.0 {rm cm} mark on the track. The glider completes 15.0 oscillations in 35.0 {rm s}. What are the (a) peri
Assume that each CD holds 650 megabytes of information. (a) If you packed the aircraft with as many CDs as it could hold, how much information could you store in megabytes.
If a curve with a radius of 85 is perfectly banked for a car traveling 71 , what must be the coefficient of static friction for a car not to skid when traveling at 86 ?
If the volume is 100 ml and the temperature is kept constant at 100 degrees kelvin, and if the initial pressure is 100 mmHg. What will the new volume be if the pressure increases to 200mmHg.
What is the turntable's angular speed when the block reaches the outer edge?
A student uses an audio oscillator of adjustable frequency to measure the depth of a water well. Two successive resonant frequencies are heard at 221 Hz and 247 Hz. The speed of sound in air is 344
A hole of radius R/2 is drilled into the disk, with the center of the hole at a distance R/2 from the center of the disk (the diameter of the hole spans from the center of the disk to its outer edge
A child is sliding on a sled at 1.6 {rm m/s} to the right. You stop the sled by pushing on it for 0.80 {rm s} in a direction opposite to its motion.If the mass of the child and sled is 40 {rm kg}, w