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A thin copper rod 1.00 m long has a mass of 50.0 g. What is the minimum current in the rod that would allow it to levitate above the ground in a magnetic field of magnitude 0.100 T?
An object is located 4.13 cm to the left of the lens that is on the left. Determine the final image distance relative to the lens on the right.
A crate is sliding down a ramp that is inclined at an angle of 33° above the horizontal. The coefficient of kinetic friction between the crate and the ramp surface is 0.479. Find the accelerati
What would x be for the same h and y as in part A if you let a silver dollar roll down the track? You can ignore the work done by friction.
The skateboarder in the drawing starts down the left side of the ramp with an initial speed of 3.18 m/s. If non-conservative forces, such as kinetic friction and air resistance, are negligible, what
The bullet pass is thrown with a launch angle of 27.0 degrees. What is the initial speed of this pass?
A loudspeaker of mass 19.0 is suspended a distance of = 2.00 below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of = 3.30 . What is the tension in each
A horse canters away from its trainer in a straight line, moving 117 away in 14.3 . It then turns abruptly and gallops halfway back in 4.8 .Calculate its average speed for the entire trip. Calculat
Runner A is initially 6.0 km west of a flagpole and is running with a constant velocity of 5.5 km/h due east. Runner B is initially 7.0 km east of the flagpole and is running with a constant velocit
Calculate the magnitude of the magnetic force on the wire if the angle between the magnetic field and the current is (a) 60.0°, (b) 90.0°, (c) 120°.
Two blocks each of mass 1.7 kg are suspended from the ends of a rigid weightless rod of length l1 = 171.0 cm and l2 = 12.2 cm. The rod is held in the horizontal position shown and then released. Cal
The altitude of a hang glider is incrasing at a rate of 6.8 m/s. At the same time, the shadow of the glider moves along the ground at a speed of 15.5m/s when the sun is directly over head. Find the
A long horizontal wire carries a current of 48 {rm A}. A second wire, made of 2.6 mm diameter copper wire and parallel to the first, is kept in suspension magnetically 15 {rm cm} below. Determine th
A proton orbits a long charged wire, making 1.50 times 10^{6} revolutions per second. The radius of the orbit is 1.60 cm. What is the wire's linear charge density?
A 202-kg projectile, fired with a speed of 123 m/s at a 53.0 angle, breaks into three pieces of equal mass at the highest point of its arc (where its velocity is horizontal).
When solving this problem use an inertial coordinate system, as drawn here. (Intro 2 figure) Given the angular speed omega, find the radius R(omega) at which the mass rotates without moving toward
A small glass bead has been charged to + 10.0 nC. A metal ball bearing 1.90 cm above the bead feels a 1.20×10-2 N downward electric force. What is the charge on the ball bearing?
An electric field of intensity 2.5 kN/C is applied along the x-axis. Calculate the electric flux through a rectangular plane 0.350 m wide and 0.700 m long if the following conditions are true:
A 63-kg person on skis is going down a hill sloped at 30° from the horizontal. The coefficient of friction between the skis and the snow is 0.19. What would be the magnitude of the acceleration
A tennis ball rolls off the edge of a tabletop of height 0.850 m above the floor and strikes the floor at a point a horizontal distance 1.80 m from the edge of the table. You can ignore air resistan
The block starts at rest, is accelerated by the compression spring, and slides across a frictionless track except for a small rough area on a horizontal section ofthe track. It leaves the track hori
Neuroscience, 1. On examining the CT scan of a patient who recently suffered from a stroke, the neurologist noted that there is an ischemic lesion affecting one-half of Internal capsule. He furthe
Two horizontal forces, 213 N and 140 N, are exerted on a canoe. If the these forces are applied in the same directions, find the net horizontal force on the crate.
A 3.5 kg rock is initially at rest at the top of a cli?. Assume that the rock falls into the sea at the foot of the cli? and that its kinetic energy is transferred entirely to the water. How high is
Assume that the angles that locate the fringesb on the screen are small enough so that sin u<tan u. Find the separation of y when the light has a wavelength of 585nm.