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Suppose a slide similar to Der Stuka is 35.6 meters high, but is a straight slope, inclined at 45° with respect to the horizontal. Find the magnitude of the force of friction, assumed constant.
A sanding disk with rotational inertia 2.4 10-3 kg·m2 is attached to an electric drill whose motor delivers a torque of 8 N·m about the central axis of the disk. What are the following
When a force of 6.0 N is applied, pulling the spring to the right, the elongation of the spring is 0.030m from it's equilibrium position. What is the force constant of the spring?
The general Kepler orbit is given in polar coordinates by r(phi) = c/[1 + epsilon*cos(phi)]. Rewrite this in Cartesian coordinates for the cases that epsilon = 1 and epsilon > 1 showing that if
Determine which balls are positively charged, which are negatively charged, and which are neutral if: 1. Balls A and C feel no forces between each other.
A small, 300g cart is moving at 1.60m/s on an air track when it collides with a larger, 5.00 kg cart at rest. After the collision, the small cart recoils at 0.840 m/s. What is the speed of the larg
A certain lightbulb has a tungsten filament with a resistance of 21.2 Ω when at 20.0°C and 136 Ω when hot. Assume the resistivity of tungsten varies linearly with temperature even o
A 0.700-V potential difference is maintained across a 1.50-m length of tungsten wire that has a cross-sectional area of 0.600 mm2. What is the current in the wire?
A child goes down a playground slide with an acceleration of 1.22 .Find the coefficient of kinetic friction between the child and the slide if the slide is inclined at an angle of 31.0 below the ho
A trapeze artist swings in simple harmonic motion with a period of 4.2s. The acceleration of gravity is 9.81m/s2. Calculate the length of the cables supporting the trapeze.
The torque is applied for 12.0 . Neglect friction. What is the rotational kinetic energy of the platform at the end of the process described above?.
A mountain climber, in the process of crossing between two cliffs by a rope, pauses to rest. She weighs 549 N. As the drawing shows, she is closer to the left cliff than to the right cliff, with th
The electrons are projected into this region at an angle θ to the plates as shown above. Assume that the entire apparatus is in vacuum and that Vp > Vg. Display all results in terms that i
A 300g block on a 58.0cm -long string swings in a circle on a horizontal, frictionless table at 75.0rpm. What is the speed of the block? What is the tension in the string?
A 3.40 g coin is placed 16.0 cm from the center of a turntable. The coin has static and kinetic coefficients of friction with the turntable surface of mu_s = 0.720 and mu_k = 0.480. What is the max
A point P lies at a distance b above the infinite plane, where b<a. Calculate the total E-field at P. Use a Gaussian surface for the sphere, and use a Coulomb integral for the infinite plane.
The force exerted by the wind on the sails of a sailboat is Fsail = 305 N north. The water exerts a force of Fkeel = 195 N east. If the boat (including its crew) has a mass of 275 kg, what are the
If the magnetic field strength is 0.845 T, what is the magnitude and direction of the magnetic force on the wire between the poles?
A 770 kg car moving at 24 m/s brakes to a stop. The brakes contain about 14 kg of iron that absorb the energy. What is increase in temperature of the brakes? Assume the specific heat of iron is 450
They are fixed in place on the same straight line and adjacent charges are equally separated by a distance d. Consider the net electrostatic force acting on each charge. Calculate the ratio of the l
The engine of a Ferrari F355 F1 sports car takes in air at 20.0 and 1.00 and compresses it adiabatically to 0.0900 times the original volume. The air may be treated as an ideal gas with .
she notices a group of workers down the walkway who have unexpectedly blocked her path, and she makes a quick stop in 1.8 seconds. What is Suzies average acceleration?
Coherent light with wavelength 609nm passes through two very narrow slits, and the interference pattern is observed on a screen a distance of 3.00m from the slits. The first-order bright fringe is
A 0.280-kg ball makes an elastic head-on collision with a second ball initially at rest. The second ball moves off with one-fourth the original speed of the first ball. What is the mass of the seco
The space between the plates is filled with a dielectric material, and the electric field within the dielectric is 0.350 MV/m.What is the dielectric constant?