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What was the average acceleration of the driver during the collision? Express the answer in terms of "g's," where 1.00g = 9.80 m/s2.
A particular nucleus of the element plutonium contains 94 protons and 150 neutrons. What is the magnitude of the force from the nucleus on a single electron that is at a distance of 0.563 × 1
Starting from rest, a 98-kg firefighter slides down a fire pole. The average frictional force exerted on him by the pole has a magnitude of 800 N, and his speed at the bottom of the pole is 3.2 m/s.
You're carrying a 4.0-m-long, 23 pole to a construction site when you decide to stop for a rest. You place one end of the pole on a fence post and hold the other end of the pole 35 from its tip. Ho
What is the stopping distance when the surface is dry and the coefficient of friction is 0.600?
The resulting electric field magnitude E is measured along the ring's central axis (perpendicular to the plane of the ring). At what distance from the ring's center is E maximum?
An emf of 0.32 V is induced in a 0.40 H inductor. What is the rate of change of current through the inductor?
After being accelerated to a speed of 1.51×105 , the particle enters a uniform magnetic field of strength 1.00 and travels in a circle of radius 30.0 (determined by observing where it hits th
At t = 7.0 s the box is at location ‹ 12, 2, -2 › m, traveling with velocity ‹ 7, 0, 0 › m/s. What is its position and velocity at t = 8.5 s?
A generator uses a coil that has 140 turns and a 0.50-T magnetic field. The frequency of this generator is 60.0 Hz, and its emf has an rms value of 120 V. Assuming that each turn of the coil is a s
Estimate the total number of bacteria and other prokaryotes in the biosphere of the Earth.
Find the force exerted by the Moon on a 83.5 kg man on Earth. The Moon has a mass of 7.36 1022 kg and is 3.84 108 m from Earth.
Calculate the angular speed, in rad/sec of a flywheel turning at 813rpm.
A brick is thrown upward from the top of a building at an angle of 15° to the horizontal and with an initial speed of 10 m/s. If the brick is in flight for 3.5 s, how tall is the building?
A cable is used to raise a 23 urn from an underwater archeological site. There is a 30 drag force from the water as the urn is raised at a constant speed. What is the tension in the cable?
Another particle, of mass 7.5 10-27 kg, moves along the positive x-axis with a speed of 1.0 106 m/s. (Assume that mass is conserved.) (a) Determine the third particle's speed.
A slab of marble is resting on the ground. It weighs 600N and has the dimensions 0.1 m x 0.2 m x 1.0 m. What is the greatest pressure that the slab can exert on the ground? the least?
How to calculate the theoretical values in the vector addition of forces experiment using the force table?
An emf is induced in a conductin loop of wire 1.03m long as its shape is changed from square to circular. Find the average magnitude of the induced emf if the change in shape occurs in 4.15s and the
You purchase a rectangular piece of metal that has dimensions 10.0 20.0 30.0 and mass 4.70×10-2 . The seller tells you that the metal is gold. To check this, you compute the average density o
A beam and a cable support a weight of 12,000 lbs the beam weighs 300 lbs. Calculate the tension in the cable and the reaction of the support
A gray kangaroo can bound across a flat stretch of groundwith each jump carrying it 11 m from the take off point. if the kangaroo leaves the ground at 22 degree angle what are its take off speed an
A 515 g block slides along a frictionless surface at a speed of 0.35 m/s. It runs into a horizontal massless spring with spring constant 56 N/m that extends outward from a wall. It compresses the s
A diver springs upward from a diving board above the water. He enters the water at a degree angle with respect to the water surface, at a speed. Determine the magnitude of his initial velocity.
A hiker walks 3.5 km at an angle of 45 degrees north of west. Then the hiker walks 1.5 km south. What is the magnitude and direction of the hiker's totaly displacement?