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A gymnast on a high bar swings through three revolutions in a time of 2.90 s. The magnitude of the average angular velocity of the gymnast, in rad/s, is.
A 23 g ball is fired horizontally with initial speed toward a 110 g ball that is hanging motionless from a 1.1m long string. The balls undergo a head on, perfectly elastic collision, after which the 110 g ball swings out to a maximum angle theta m..
What is the minimum diameter mirror on a telescope that would allow you to see details as small as 4.90 km on the moon some 384000 km away
Illustrate what is the horizontal component of the superhero’s displacement? Draw the vectors to scale on a graph to determine the answer.
After two days, only one-quarter of a radioactive sample remains. What is the half life of the nuclei
A poor artist might approximate a flower as a series of radial lines and circular arcs. What is the direction of the magnetic field
The vector position of a 3.80 g particle moving in the XY plane varies in time according to \(r_1= (3i + 3j)t + 2t^2\), Determine the vector position of the center of mass at t = 2.90
What is the distance (in mm) separating the violet (lambda = 400nm) in the first-order band from the red (lambda = 600nm) in the second order.
Two in-phase loudspeakers are located at (x, y) coordinates (-2.5 m, +2.0 m) and (-2.5 m, -2.0 m), Determine the amplitude of the sound at the five positions on the y-axis (x = 0) with y = 0.0 m, 0.5 m, 1.5 m, and 2.0 m
An electron is brought to a point 0.2m from the center of a conducting sphere of radius 0.1m carrying a charge of 4.0x10^-6 C, What is the force acting on the electron
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?
A stone is dropped at t = 0. A second stone, with 6 times the mass of the first, How far below the release point is the center of mass of the two stones at t = 340 ms
Place a sheet of paper under a medium-sized book lying on a smooth tabletop or desktop. Which objects move the least when the paper is pulled rapidly
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