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A dolphin leaps out of the water at an angle of 36.1 ° above the horizontal. The horizontal component of the dolphin's velocity is 6.25 m/s. Find the magnitude of the vertical component of the velocity.
A power supply has an open-circuit voltage of 43.0 V and an internal resistance of 2.00 ?. What additional resistance should be added in series
The Gravitron is an amusement park ride in which riders stand against the inner wall of a large spinning steel cylinder. What is the maximum rotational speed at which the riders will not slide up the walls of the ride
A nonconducting solid sphere of radius R has a volume charge density that is proportional to the distance from the center. That is, ? = Ar for r R, where A is a constant. (Use the following as necessary: 0, A, r, and R, as necessary.)
An object of mass 2 kg is moving on a spring with a frequency of 120 Hz and an amplitude of 1.5 m. What is the objects maximum velocity
A person walks first at a constant speed of 5.10 m/s along a straight line from point to point and then back along the line from to at a constant speed of 2.95 m/s. (a) What is her average speed over the entire trip? (b) What is her average veloci..
on a ferris wheel with a 15 m radius, going one loop every 7 seconds, what is the acceleration? What is the ratio of your true weight vs apparent weight
A 1.15-k? resistor and a 590-mH inductor are connected in series to a 1250-Hz generator with an rms voltage of 13.1V, What is the rms current in the circuit
A capacitor is connected across the terminals of an ac generator that has a frequency of 370 Hz and supplies a voltage of 15 V. When a second capacitor is connected in parallel with the first one, the current from the generator increases by 0.27 A. D..
The magnitude of the electrostatic force between two identical ions of mass 1.224×10-25 kg that are separated by a distance of 6.50 nm is 1.770×10-9 N. Calculate the electric field at the site of each ion
An ice block is pushed horizontally on a frictionless surface with initial velocity v0. At some point, it comes to the nearly semicircular bump with a radius R=0.42m and the height h=0.33m above the ground.
The detective who investigated the scene of the crime found a second bullet, from the shot that missed Mr. Wesson, that had embedded itself into a chair.
The left end of a long glass rod 15.0 cm in diameter has a convex hemispherical surface 7.50 cm in radius, Determine the position of the image if an object is placed in air on the axis of the rod
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