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A pitcher threw a baseball straight up at 35.8 meters per second. What was the ball's velocity after 2.50? (Note that, although the baseball is still clibing gravity is accelerating it downward).
An electron and a positron (an antielectron) make a head-on collision, each moving at v=0.99999c. What is the kinetic energy of each of the muons
A car moving with constant acceleration covered the distance between two points 59.5 m apart in 5.87 s. What was the speed at the first point
A 100 gram bullet travelling at 350 m/s strikes and sticks into a stationary 5.00 kg block of wood. The combined bullet+ block initially slides on a horizontal frictionless surface until they encounter a 30.0 degree inclined plane with a coefficient ..
An object is 23.0cm from the center of a silvered spherical glass Christmas tree ornament 6.50cm in diameter. What is the magnification of its image
In the park, several children with a total mass of 240 kg are riding a merry-go-round with a rotational inertia of 1500 Kg*ms2 and a radius of 2,2m. what is the rotational velocity after the children move tot he center, igoring frictional torque
Consider a square loop of wire (sides of 0.25 m) with a resistor included. A bar magnet with the north end up front is approaching the closed loop and thus induces a current. what is the rate of energy dissipation across the resistor
A Porsche 914 accelerates uniformly from 0 to 60 mph in 5 sec. Assuming a frictionless air track and a glider mass of 550 g, Obtain the mass that one must hang from the glider
It is expected to measure an X-ray peak which occurs at an angle of around 31.6g. Alter viewing the scale and pointer, with what accuracy w ill you quote the result?
Consider two identical +53 microcoulomb point charges placed 58 cm apart. Calculate the work (in J) required to move the test charge to a point 8 cm closer to either of the charges
A loudspeaker sounds a 600 Hz tone. Find what is the difference in the wavelength of the sound waves produced in air at -6°C and at 34°C
A coaxial cable used in a transmission line has an inner radius of0.20 mm and an outer radius of0.65 mm. Calculate the capacitance permeter for the cable. Assume that the space between the conductorsis filled with polystyrene.
Assume that a planet was reported to be orbiting the sun-like star Iota Horologii with a period of 300 days. Determine the radius of the planet's orbit
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