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The radius of the merry-go-round is 9 m. At what time intervals does Sheila encounter her brother, if she rides opposite to the direction of rotation of the merry-go-round?
Stone is thrown straight up from the bottom of the cliff with a speed of 27.0 . The stone and ball collide part way up. How far above the base of the cliff does this happen?
Use either trigonometry or components to find the displacement that will return Bob to his starting point by the most direct route. Give your answer as a distance. Find the direction of the displace
A uniform meter stick with a mass of 250g is supported horizontally by two vertical strings, one at the 0.0-cm mark an the other at the 90.0-cm mark.
A 53 kg skier skis directly down a frictionless slope angled at 12° to the horizontal. Choose the positive direction of the x axis to be downhill along the slope. A wind force with component Fx
What is λ2, the linear charge density of the insulating shell? What is Ex(P), the value of the x-component of the electric field at point P, located a distance 6.8 cm along the y-axis from the
A 1.38 kg object is held 1.40 m above a relaxed, massless vertical spring with a force constant of 294 N/m. The object is dropped onto the spring. How far does the object compress the spring?
A 6.7 g bullet is fired into a 1.3 kg ballistic pendulum. The bullet emerges from the block with a speed of 137 m/s, and the block rises to a maximum height of 10 cm. Find the initial speed of the b
The driver has a mass of 88 , and is, fortunately, tightly strapped into his seat. What force is applied to the driver by his seat belt during that fraction of a second?
An old oaken buck of mass 6.75 kg hangs in a well at the end of a rope. The rope passes over a frictionless pulley at the top of the well, and you pull horizontally on the end of the rope to raise t
The cable of a 2048-kg elevator has broken, and the elevator is moving downward at a steady speed of 1.59 m/s. A safety braking system that works on friction prevents the downward speed from increa
What is the absolute value of the magnetic field inside the inner coil? What is the absolute value of the magnetic field between the coils?
The acceleration due to gravity at the surface of the moon is 1.62 m/s^2. What is the average velocity of the rock during the first 22.0 s of flight
If two small beakers of water, one at 70 and one at 80, are emptied into a large beaker, what is the final temperature of the water?
The coefficient of kinetic friction between the box and the ramp is 0.23. Find the horizontal force to move the box up with a constant acceleration of 4.10ms^-2.
A proton orbits a long charged wire, making 1.10 *10^6 revolutions per second. The radius of the orbit is 1.50cm. What is the wire's linear charge density?
Calculate the magnitude of the force if the man pushes parallel to the incline and if the man pushes parallel to the floor.
A bicycle and its rider together has a mass of 86 kg. What power output of the rider is required to maintain a constant speed of 3.6 m/s (about 8.1 mph) up a 5.0% grade (a road that rises 5.0 m for
The crate lies on a plane tilted at an angle = 29 to the horizontal, with = 0.15. the height of the incline is 8.15 m. Determine the acceleration of the crate as it slides down the plane.
A man of mass 79.5 kg stands on a scaffold supported by a vertical rope at each end. The scaffold has a mass of 24.1 kg and is 2.4 m long. Suppose the man stands to the right from the middle of the
He explains that the phenomenon is happening. Explain. Calculate the vertical distance between two consecutive receiver positions corresponding to two maxima.
A pendulum consists of an object of mass 4.42 kg that hangs at the end of a massless bar, a distance 1.68 m from the pivot point. Calculate the magnitude of the torque due to gravity about the pivo
After a fourth unmeasured displacement, she finds herself back where she started. Determine the magnitude of the fourth displacement.
A probe, 2A above a gold surface, consists of a double tip, with a second atom 0.25A higher than the lowest atom (which is the one 2A above the surface) gives a ‘ghost' image displaced from th
The soldier does 121 J of work in the process setting the bow/arrow combination and then releases the arrow. What is the speed of the arrow?