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A ski tow operates on a slope of angle 14.3 degree of length 250 m . The rope moves at a speed of 12.6 km/h and provides power for 53 riders at one time, with an average mass per rider of 68.0 kg.
The cathode and the anode at a rate of 3.50 A. If 95.0% of the electrons reach the anode,(a) How many electrons reach the anode during a period of 15.0 s?
A car is traveling 96 km/h and is 130 m behind a truck traveling 75 km/h. How long will it take the car to reach the truck?
A hunter 1.7 meters tall (that is to the eye level) directly aims at a target which is on the same level. By how much will he miss the target?
A diver 60 m deep in 10^circ{rm C} fresh water exhales a 1.5 {rm cm} diameter bubble.What is the bubble's diameter just as it reaches the surface of the lake, where the water temperature is 20^circ{
A 10cm-long thin glass rod is uniformly charged to +50 nC. A small plastic bead, charged to - 4.7 nC, is 4.5 cm from the center of the rod. What is the magnitude of the force on the bead?
An ideal gas is allowed to expand adiabatically until its volume increases by 50%. By approximately what factor is the pressure reduced? (k=5/3)
After a 0.360-kg rubber ball is dropped from a height of 1.80 m, it bounces off a concrete floor and rebounds to a height of 1.40 m. Determine the magnitude and direction of the impulse delivered to
A railroad freight car with mass 32,000 kg is moving at 2 m/s when it runs into an at-rest freight car with mass of 28,000 kg. The cars lock together. What is their final velocity?
The volume of the room is 60.0 m^3. When the temperature increases from 289 to 302-degrees K, what mass of air (in kg) escapes from the room?
An object has a kinetic energy of 223 J and a momentum of magnitude 23.4 kg·m/s. Find the speed and the mass of the object.
what happens to light of a certain frequency when it is incident upon a material whose natural frequency is the same as the frequency of the light?
A 600kg car is going around a banked curve with a radius of 110m at a speed of 24.5m/s. what is the appropriate banking angle so that the car stays on its path without the assistance of friction?
Where it is administered at a pressure of 1.00 atmospheres and a temperature of 297-degrees K. What volume does 1.00 m^3 of oxygen in the tanks occupy at the conditions in the patients room?
A 79.2-kg airplane pilot pulls out of a dive by following, at a constant speed of 191 km/h, the arc of a circle whose radius is 321.0 m .
A batter hits a 0.140-kg baseball that was approaching him at 30.0 m/s and, as a result, the ball leaves the bat at 40.0 m/s in the direction of the pitcher. The ball remains in contact with the bat
If a person radiates about 72 W of power at room temperature, how long does it take for a person to radiate away the energy acquired by consuming a 230 Calorie doughnut?
A block of mass m1 = 1.70 kg and a block of mass m2 = 6.20 kg are connected by a massless string over a pulley in the shape of a solid disk having radius R = 0.250 m and mass M = 10.0 kg. These blo
What is Fx if the magnitude of the skier's velocity is (a) constant, (b) increasing at a rate of 1.0 m/s2, and (c) increasing at a rate of 2.0 m/s2.
A 1.40 kg bottle of vintage wine is lying horizontally in the rack shown in the drawing. The two surfaces on which the bottle rests are 90.0° apart, and the right surface makes an angle of 45&de
A diffraction grating that has 2000 slits per centimeter is used to measure the wavelengths emitted by hydrogen gas. (a) At what angles in the first-order spectrum would you expect to find the two v
A 20.0 kg rock slides on a rough horizontal surface at 8m/s and eventually stops due to friction. The coefficient of kinetic friction between the rock and the surface is 0.200. What average therma
A movig particle encounters an external electric field that decreases its kinetic energy from 9630 eV to 7930 eV as the particle moves from position A to position B. The electric potential at A is -
A 67.0 kg person throws a 0.0450 kg snowball forward with a ground speed of 30.0 m/s. A second person, with a mass of 55.0 kg, catches the snowball. Both people are on skates. The first person is i