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A toy cannon uses a spring to project a 5.28 g soft rubber ball. The spring is originally compressed by 5.06 cm and has a force constant of 8.08 N/m. When the cannon is fired, the ball moves 15.0 cm through the horizontal barrel of the cannon, and there is a constant frictional force of 0.0322 N between the barrel and the ball.
(a) With what speed does the projectile leave the barrel of the cannon?
(b) At what point does the ball have maximum speed?
(c) What is this maximum speed?
Consider a 0.11 cm focal length microscope objective that is 0.29 cm from the object being viewed. What magnification is being produced by the objective
A woman stands at the center of a platform. The woman and the platform rotate with an angular speed of 5.20 rad/s. Friction is negligible. Find her new angular speed
reviews the concepts that are involved in this problem. A child is twirling a 0.0211-kg ball on a string in a horizontal circle whose radius is 0.0866 m. Determine the centripetal force acting on the ball
An induced emf occurs in a conducting loop of wire 1.12m long as its shape is changed from square to circular. What is the average magnitude of the induced emf if the change in shape occurs in 4.25 sec and the local 0.105T magnetic field is perpendic..
Two stationary positive point charges, charge 1 of magnitude 3.10 nC and charge 2 of magnitude 1.74 nC, are separated by a distance of 36 cm. An electron is free from rest at the point midway between the two charges, and it moves along the line con..
A cyclist starts from rest and coasts down a 4.0?hill. The mass of the cyclist plus bicycle is 85 kg. Ignore air resistance and friction. How fast is the cyclist going
administrative expenses are avoidable if product R97C is discontinued. Illustrate what would be the effect on the company's overall net operating income if product R97C were dropped?
Calculate the speed of the second ship with respect to Earth if it is fired in the same direction the first spaceship is already moving
On December 3 at 11 pm you look toward the eastern horizon and see the bright star Procyon rising. At approximately what time would Procyon rise one week later, on December 9.
Two disks of identical mass but different radii (r and 2r) are spinning on frictionless bearings at the same angular speed ?0, but in opposite directions. what is the change in the rotational kinetic energy
A skateboarder, starting from rest, rolls down a 12.5 m ramp. When she arrives at the bottom of the ramp her speed is 6.10 m/s. (a) Determine the magnitude of her acceleration, assumed to be constant. .m/s2 (b) If the ramp is inclined at 26.5° wit..
Suppose you have an electric hot water heater for your house which is an aluminum cylinder which has a 0.46 m radius and is 2 m high. How much energy is lost through the walls of the hot water heater
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