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A block is hung by a string from the inside roof of a van. When the van goes straight ahead at a speed of 22.6 m/s, the block hangs vertically down. But when the van maintains this same speed around an unbanked curve (radius = 138 m), the block swings toward the outside of the curve. Then the string makes an angle θ with the vertical. Find θ.
A bar magnet is oriented with its magnetic dipole moment at 57.3° to the direction of a 0.0357-T magnetic field, Find the magnitude of the magnet\'s magnetic dipole moment
a 9.00 g bullet moving horizontally with an initial speed v embeds itself in a 1.20 kg pendulum bob that is initially
A force of 715 N is applied to a roller-coaster car to push it horizontally. If 2.72 X 10^4 J of work is done on car, how far has it been pushed.
Stellar radial velocity variations as small as 1 m/s can be detected with current technology. what is the radius of the widest circular orbit on which jupiter could currently be detected orbiting the Sun
A grating has 600 rulings per mm and is 6.0 mm wide. What is the smallest wavelenght interval that can be resolved in the third order at ? = 500 nm? How many orders can be seen? Assum normal incidence of light on the grting throughout.
A particle has a charge of -3.00 nC. A.) Find the magnitude and direction of the electric field due to this particle at a point 0.250 directly above it. B.) Upward or downward? C.) At what distance from the particle does its electric field have a ..
A 7 kg sled is initially at rest on a horizontal road. The sled is pulled a distance of 3.5 m by a force of 37 N applied to the sled at an angle of 30o to the horizontal
A small plastic ball with a mass of 6.50 x 10?3 kg and a charge of +0.15uC is suspended from an insulating thread, What is the magnitude of the charge on each plate
A highly polished silver hemisphere of radius R rests with its base on a level table. What must be the diameter of the beam if light from the outer edges of the beam is reflected horizontally
A child whose mass is 40 kg obstruction is on the 3rd floor of the building at a height of 15 m above the ground. Calculate the potential energy of the child if the child is now located on the 5th floor and is located 25 m from the ground!
When empty, a particular helicopter of mass 3770 kg can accelerate straight upward at a maximum acceleration of 1.34 m/s2. What is the mass of the cargo
Explain the changes in the velocity, acceleration, and net force of a man with a parachute jumping off a plane. You need to describe the changes with valid scientific principles.
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