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An entertainer juggles balls while doing other activities. In one act, she throws a ball vertically upward, and while it is in the air, she runs to and from a table 5.50 m away at a constant speed of 2.50 m/s, returning just in time to catch the falling ball.
(a) With what minimum initial speed must she throw the ball upward to accomplish this feat?
(b) How high above its initial position is the ball just as she reaches the table?
Find the moment of inertia tensor of a cone rotating around its axis. One axis of the body frame is along the axis of the cone, and the origin at the tip.
A 2 kg mass is pushed 0.5 m into a spring with spring constant 200 N/m on a frictionless horizontal surface. Upon release, the mass travels across the surface until it encounters a rough incline. The mass moves up incline and stops at a height of ..
A pitcher throws a 0.140 kg baseball, and it approaches the bat at a speed of 35.0 m/s. The bat does Wnc = 75.0 J of work on the ball in hitting it. find the speed of the ball after the ball leaves the bat
A bird is flying directly toward a stationary bird-watcher and emits a frequency of 1360 Hz. The bird-watcher, however, hears a frequency of 1430 Hz. What is the speed of the bird, expressed as a percentage of the speed of sound?
Find out the position at which a third charge can be placed.
The electric potential at a position located a distance of 21.6 mm from a positive point charge of 8.70×10-9C, estimate the value of the second charge
A grandfather pulls his granddaughter, whose mass is 19.3 kg and who is sitting on a swing with ropes of length 2.75 m, What is the angle (in degrees, measured relative to the vertical) from which she is released
The water molecule H2O, with a permanent dipole moment of magnitude of 6.2x10^-30 Cm, What force does the ion exert on the water molecule
You are arguing over a cell phone while trailing an unmarked police car by 26.0 m; both your car and the police car are traveling at 120 km/h. what is your speed (in km/h) when you hit the police car
At the bottom, it strikes a block of mass M=2m which is at rest on the horizontal surface. Assume that the transition at the bottom is smooth, determine the speeds of the two blocks after the collision
Light of wavelength 5.70 x 102nm passes through a slit of width 0.210 mm. Determine the width of the first-order bright fringe
Question on constant speed
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