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A man holds a pail of water by the handle and whirls it around avertical circle of radius 0.84 m at constant speed. What is theminimum speed that the pail must have at the top of its circularmotion if the water is not to spill out of the upside-downpail?
An outfielder throws a 0.150-kg baseball at a speed of 22.0 m/s and an initial angle of 30.0°. What is the kinetic energy of the ball at the highest point of its motion
A spectral line from the left side of Saturn's rings, as you see them, is at a wavelength slightly shorter than the same spectral line measured from the right side of Saturn's rings. Which way (direction) is Saturn rotating and why?
The work function for a metal is 3.8 eV. What is the minimum photon frequency that can just eject an electron from the metal
A grandfather clock is controlled by a swinging brass pendulum that is 1.3 m long at a temperature of 30.°C. What is the change in the length of the pendulum rod
A balloon with a radius of 14.00cm and an electric charge of 3.75 × 10-9 C is brought within the electric field of the larger balloon so their centres are 40cm apart. Establish the magnitude of the electric force exerted by this electric field on ..
An object placed 14.9 cm from a concave mirror produces a real image 12.3 cm from the mirror. where is the new image located as measured from the mirror
An inductor of 491 mH with a resistance of 47 ? is connected to a power supply with a maximum voltage of 135 V and a frequency of 77 Hz. Find the power loss in the inductor
A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of 19.0 m/s. With what speed and angle of impact does the stone land
Determine the stopping distances for a car with an initial speed of 94 and human reaction time of 0.90 , for an acceleration
A motorboat heads due east 13.3 m/s across a river that flows toward the south at a speed of 4.5m/s. Illustrate what is the magnitude of the resultant velocity relative to an observer on the shore?
A bicycle wheel of radius 0.30m is spinning at a rate of 60 revolutions per minuit. What is the period of the wheels motion
Calculate the focal length required of glasses to be worn, A pair of eyeglasses are designed to allow a person with a near-point distance of 2.52 m to read a road sign at a distance of 25.2 m.
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