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Oversize wheels give too low a reading, because they really travel farther per revolution than the speedometer indicates; and undersize wheels give too high a reading because the wheels do not go as
Find the magnitude of the electric field. Use 1.60×10-19 C for the magnitude of the charge on an electron and 1.67×10-27 kg for the mass of a proton. Find the speed of the proton at the mo
Water being diverted during a flood in Helsinki, Finland (latitude 60? N) flows along a diversion channel. On which side is the water highest (from the standpoint of a noninertial system) and by how m
A 25000 kg rocket ship accelerates upwards due to constant 1.25MH of thrust from its engin. A simple pendulum on the ship is observed to complete 100 full swings in 75 seconds. What is the length o
A submarine dives 110.0 m at an angle of 10.0° below the horizontal. What are the horizontal and vertical components of the submarine's displacement? (Assume that upward and the direction of th
A bucket of water is to be swung in a vertical circle without a drop of water being spilled. If the circle has a radius of 0.80m, what must be the minimum speed of the upside down bucket at the top
It bounces off with the same speed and angle. If the ball is in contact with the wall for 0.200 s, what is the average force exerted by the wall on the ball?
In a game of tug of war, one person pulls with force of 100N to the left, and the other pulls with a force of 60N to the right. What is the net force and direction of the net force and acceleration
A satellite has a mass of 6168 kg and is in a circular orbit 4.03 × 105 m above the surface of a planet. The period of the orbit is 2.1 hours. The radius of the planet is 4.50 × 106 m. W
A river flows due east at 1.56 m/s. A boat crosses the river from the south shore to the north shore by maintaining a constant velocity of 10.9 m/s due north relative to the water.
The vibrating portion of the guitar string has a length of. What is the speed of transverse waves on the guitar string?
A uniformly charged disk of radius 35.0 cm carries charge with a density of 7.90 x 10-3 C/m2. Calculate the electric field on the x axis of the disk at (a) 1.00 cm, (b) 5.00 cm, (c) 30.0 cm, and (d
Assume that the spring has negligible mass and that all its stored energy is transferred to the particles. Once that transfer is complete, what are the kinetic energies of (a) particle A and (b) par
A steel ball of mass 0.400 kg is fastened to a cord 75.0 cm long and fixed at the far end. It is released when the cord is horizontal. At the bottom of its path, the ball strikes a 3.80 kg steel blo
A.) What is the potential energy of the third charge if it is placed at x= 10.00cm. B) Where should the third charge be place to make it's potential energy 0?
Calculate the change in one day, given that the rotational period of 24.0 h decreases by about 11 µs each year. (Let 1 yr = 365 d).
A 3.0-m-long rigid beam with a mass 130 is supported at each end. An 75 student stands 2.0 from support 1. How much upward force does support 1 exert on the beam?
The specific heat of mercury is 138 J/kg Co Determine the latent heat of fusion of mercury using the following calorimeter data: 1.00 kg of solid Hg at its melting point of -39.0º C is placed
If the ball is in contact with the player's head for 6.7 {rm ms}, what is the direction of the impulse delivered to the ball?
IP A uniform electric field of magnitude 6.00 times 10^3 ;{rm{N/C}} points upward. An empty, closed shoe box has a top and bottom that are 37.0 cm by 28.0 cm, vertical ends that are 28.0 cm by 21.0
A 3.05 kg object is moving in a plane, with its x and y coordinates given by x = 5t2 - 3 and y = 4t3 + 2, where x and y are in meters and t is in seconds. Find the magnitude of the net force acting
What is the horizontal distance x to the base of the wall supporting the mirror of the nearest point on the floor that can be seen reflected in the mirror?
A child exerts a tangential 37.2 {N} force on the rim of a disk-shaped merry-go-round with a radius of 2.40 {m}.If the merry-go-round starts at rest and acquires an angular speed of 0.0900 {rev/s} i
Suppose that all the energy from a 150-watt light bulb came in the form of photons with wavelength 600. Calculate the energy of a single photon with wavelength 600nm.
A uniform disk turns at 3.8 around a frictionless spindle. A nonrotating rod, of the same mass as the disk and length equal to the disk's diameter, is dropped onto the freely spinning disk. They th