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A box slides down a 36° ramp with an acceleration of 1.26 m/s2. Determine the coefficient of kinetic friction between the box and the ramp.
An air track has a block with a height h=12.0 cm under one support. The other support is 3.50m away. What is the angle of inclination?
A jet of water squirts out horizontally from a .5m hole near the bottom of the tank. If the tank has a diameter of 2.0m, what is the height h of the water level in the tank and the velocity through
What are the differences and similarities between toxicology vs epidemiology methods of studying benzene?
For the questions that follow, take the origin of the coordinate system used for measuring displacements to be at the ground, and upward displacements to be positive.How many seconds after its relea
Consider a system of two particles, one with 3 times the mass of the other. If the distance between the particles is 1.0 m, the system's center of mass is what distance from the lighter object?
A wooden box weighing 281 N is pushed across the floor by a workman who exerts a horizontal force of 166 N. If the force of friction between the box and the floor is 21 N, what is the acceleration (
To demonstrate the tremendous acceleration of a top fuel drag racer, you attempt to run your car into the back of a dragster that is "burning out" at the red light before the start of a race. (Burni
a rock stuck in the tread of a 59cm diameter bicycle wheel has a tangential speed of 3.2m/s. When the brakes are applied, the rock's tangential deceleration is 1 m/s^2.
A 240 g block on a 60 cm-long string swings in a circle on a horizontal, frictionless table at 61 rpm. What is the speed of the block and the tension in the string?
A region in space contains a total positive charge Q that is distributed spherically such that the volume charge density rho (r) is given by
A 0.500 m-diameter vat of liquid is 2.40 m deep. The pressure at the bottom of the vat is 1.50 atm. What is the mass if the liquid?
Two identical positive charges exert a repulsive force of 6.4* 10^-9 N when separated by a distance of 3.8*10^-10 m. Calculate the charge of each.
A 51.5-g Super Ball traveling at 28.5 m/s bounces off a brick wall and rebounds at 16.5 m/s. A high-speed camera records this event. If the ball is in contact with the wall for 4.10 ms, what is the
A particle's trajectory is described by x = (1/2*t^3 - 2*t^2) m and y = (1/2*t^2 - 2*t) m, where t is in s. What is the particle's direction of motion, measured as an angle from the x-axis, at t =
A grinding wheel of radius 0.390 m rotating on a frictionless axle is brought to rest by applying a constant friction force tangential to its rim. The constant torque produced by this force is 85.6
A point charge that has a charge of -4.5mC experiences a repulsion force from a point charge with charge -3.6mC. The repulsion force between the charges has a magnitude of 12N i.) What is the distan
Describe the different functions oft the central core of the brain compared to the cerebral cortex
A point electric dipole with dipole moment p1 is placed at the origin of co- ordinates r= 0 and interacts with a second dipole p2. The position vector of the second dipole is r. Determine the energy
A car accelerates uniformly from rest to a speed of 66.9 mi/h in 6.99 s. Find the constant acceleration of the car.
A computer is reading data from a rotating CD-ROM. At a point that is 0.030 m from the center of the disk, the centripetal acceleration is 120 m/s2. What is the centripetal acceleration at a point
A 0.015-kg bullet traveling horizontally at 400.2 m/s strikes a 4.1-kg block of wood sitting at the edge of a table. The bullet is lodged into the wood. If the table height is 1.2 m, how far from th
A mercury barometer reads 743 mm on the roof of a building and 766 mm on the ground. Assuming a constant value of 1.29 kg/m3 for the density of air, determine the height of the building.
Two particles are fixed to an x axis: particle 1 of charge q1 = 2.69 x 10-8 C at x = 29.6 cm and particle 2 of charge q2 = -5.20q1 at x = 63.5 cm. At what coordinate on the x axis is the electric f
For both reaction times, how far will the passenger train have traveled in the time between the sighting of the freight train and the collision?