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Question: It takes 7.769 days for Jovian moon to circle jupiter. Find the moons orbital speed if its obital distance is 421,700 km.
Question: A small boat takes 3hr to o downstream from point A to point B and 6hr to come back. How long will it take the boat to go downstream with its engine cut off?
How long does it take electrons to get from the car battery to the starting motor? Assume the current is 140 A and the electrons travel through copper wire with cross sectional area 28.9 mm2 and le
Question: A light stick with two masses attached to it is spinning about its center at 5 revolutions per minute. The length of the stick is 2.5 meters and the masses are 1.5 kg each. What are the a
what will be the frequency heard by the observer. If the frequency emitted by the horn is 2000 Hz . The speed of sound is 343 m/s
Question: Two ocean liners with a mass of 50,000 metric tons are 50 m apart. What is the magnitude of the acceleration of one of the liners toward the other due to their mutual gravitational attrac
A simple harmonic oscillator takes 3.0 seconds to undergo 30 complete vibrations. Find the frequency in Hz, time period, and angular frequency in rad/s
Find the net electrostatic fornce exerted on the the +1nc charge. Assume medium is a vacuum. Book answer is Fnet= 3 x 10^-7 N. Please show step by step solution.
Question: A charge of -1.0 µC is located at the origin, a second charge of 3.4 µC is located at x = 0, y = 0.1 m, and a third charge of 5 µC is located at x = 0.2 m, y = 0. Find th
Question: An ambulance has a siren of frequency 700 Hz. If the ambulance is moving at a speed of 60 miles per hour, what will be the frequency heard by a man standing on the sidewalk as the ambulan
Only 30% of the people in a large city feel that its mass transit system is adequate. If 25 persons are selected at random,
A piano string having a mass per unit length equal to 4.00 × 10-3 kg/m is under a tension of 1100 N. Find the speed with which a wave travels on this string.
We wish to determine the index of refraction (n) of a medium by measuring how much light bends when it travels from one medium to another. The law relating angles and indexes of refraction is Snell
The planet Venus requires 225 days to orbit the sun, which has a mass M = 1.99 x 1030 kg, in an almost circular trajectory. Calculate the radius of the orbit of Venus and the orbital speed of Venus
Question: A horizontal merry-go-round has a mass of 1000 kg, and is a solid disk of radius 2.00 m. It is started from rest by a constant horizontal force of 50.0 N applied tangentially to the edge o
Calculate the speed that the crate will have after it has moved 3 meters along the incline after having started from rest.
A 60.0-kg woman balances on one heel of a pair of high-heeled shoes. If the heel is circular and has a radius of 1.00 cm, what pressure does she exert on the floor if she stands on one foot?
Question: A car is moving straight at a speed of 60 miles per hour. It then turns at a bend of radius of curvature = 50 m. If the coefficient of friction between the car tires and the road is 0.35,
A railroad car of mass 25,000 kg is moving with a speed of 5.50 m/s. It collides and couples with three other coupled railroad cars, each of the same mass as the single car and initially at rest. Wh
The rock strikes the ground a horizontal distance of 25 m from the base of the building. Assume that the ground is level and that the side of the building is vertical. How tall is the building?
A 300-kg load is hung on a wire of length 5.00 m, cross-sectional area 0.200 × 10-4 m2, and Young's modulus 8.00 × 1010 N/m2. What is increase in length of the wire?
The train moves counterclockwise, soon attaining a constant speed of 0.700 relative to the tracks. Find the magnitude and direction of the angular velocity of the disk relative to the earth.
Find the magnitude and direction of the resultant force on the electron. (Let right be the +x-direction. Measure the angle counter-clockwise from the +x-axis.) magnitude direction
Question: A 0.24 µF and a 0.30 µF capacitor are connected in series to a 9 V battery. (a) Calculate the potential difference across each capacitor. 0.24 µF capacitor V 0.30 µF