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Assuming the magnets behave as ideal dipoles, what is the distance between their centers?
Water flowing through a garden hose of diameter 2.73 cm fills a 20.0 L bucket in 1.40 min. What is the speed of the water leaving the end of the hose?
A flat surface of area A is perpendicular to the direction of propagation of the wave. Assuming the surface is a perfect absorber, calculate the radiation pressure on it.
A 10 Newton effort force is required to lift a 10 kg box just off the ground. What is the effort required to lift the box off the ground using a 3m long lever? [The fulcrum is placed 0.5m from the
What is the x, y, and z component of the torque on the loop? What is the potential energy of the loop in the magnetic field?
How long would a 0.25 hp engine have to run (1 hp = 746 W) to produce an amount of energy equal to the internal energy of this gas?
The coefficient of kinetic friction between the log and the ramp is 0.800, and the log has an acceleration of 0.700 m/s2. Find the tension in the rope.
The child jumps off the merry-go-round with a velocity of 20m/s(relative to the ground) tangential to the rim. what is the angular speed of the merry-go-round after the child jumped off?
An engine does 20000 J of work and rejects 6020 J of heat into a cold reservoir whose temperature is 285 K. What would be the smallest possible temperature of the hot reservoir?
If the ball is 1.2 meters from the pole, has a speed of 3.7 m/s, a mass of 0.42 kilograms, and its (weightless) rope makes a 49° angle with the pole, find the tension force that the rope exerts
A loudspeaker sounds a 600 Hz tone. What is the difference in the wavelength of the sound waves produced in air at -3°C and at 38°C? in m
A 0.280 kg croquet ball makes an elastic head-on collision with a second ball initially at rest. The second ball moves off with half the original speed of the first ball.
A chair of weight 115N lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of F = 35.0N directed at an angle of 43.0 below the horizontal and the chair s
It takes 2.0 minutes to fill a gas tank with 40 liters of gasoline. If the pump nozzle is 1.0 cm in radius, what is the average speed of the gasoline as it leaves the nozzle? (1 000 liters = one cub
Two semi-circular plastic rods, the bottom one of charge -q and the other of charge +q are combined to form a circle of radius R in an xy plane. The x-axis passes through the two points at which the
Consider a point on the screen located at y = 1.60 cm from the central maximum of this pattern. What is the path differencefor the two slits at location y?
A hollow spherical shell has mass 8.00 and radius 0.225 . It is initially at rest and then rotates about a stationary axis that lies along a diameter with a constant acceleration of 0.905. What is
What is the meteroid's speed as it hits the earth? You can neglect the effects of the moon, Earth's atmosphere, and any motion of the earth.
Find the magnitude and direction of an electric field at point p on a line bisecting an electric dipole (two charges of magnitude q separated by a distance d) and at a distance r from that bisectio
A solid object is made of two materials, one material having density of 2 000 textrm{kg}/textrm{m}^3 and the other having density of 6 000 textrm{kg}/textrm{m}^3. If the object contains equal volum
A space station is constructed in the shape of a wheel 19 in diameter, with essentially all of its 1.3×105 mass at the rim. Once the station is completed, it is set rotating at a rate that req
A ship sets out to sail to a point 111 km due north. An unexpected storm blows the ship to a point 146 km due east of its starting point. (a) How far (in km) and (b) in what direction (as an angle
The particle 2 of mass m2 = 82 kg at x2 = -17 m moves with a speed v2 = -36 m/s (to the left). What is the total angular momentum of the system about the z-axis relative to point A along y axis if d
A 150-lb student rides a ferris wheel that rotates at a constant rate. At the highest point, the seat exerts a normal force of magnitude 110lb on the student. What would the magnitude of this norma
An object weighs 302 N in the air. When tied to a string, connected to a balance, and immersed in water, it weighs 220 N. When it is immersed in oil, it weighs 257 N. what is the density of the obj