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Two ice skaters, with masses of 40.0 kilogram and 65.0 kilogram, are at the center of a 60.0 meter diameter circular rink. The skaters push off against each other and glide to opposite edges of the rink.
If the heavier skater reaches the edge in 10.0 second, find how long does the lighter skater take to reach the edge?
The resolution of the eye is eventually limited by the pupil diameter. What is the smallest diameter spot the eye can produce on the retina if the pupil diameter is 2.91 mm? Suppose light with a wavelength of =550 nm.
Suppose your waffle iron is rated at 1.20 kW when connected to a 3.00 102 V source. What current does the waffle iron carry
An unknown resistor is connected between the terminals of a 7.50 V battery. Energy is dissipated in the resistor at the rate of 0.510 W. At what rate is energy now dissipated
a locomotive of mass 21x103 kg travelling at 2.0ms runs into an identical stationary locomotive.a if the collision is
A block is attached to a ceiling by a spring fo force constant k. When pulled down and released the block undergoes simple harmonic motion. The amplitude is 2, and the frequency is 1/(16pi). If the mass of the block is 3.14 kg, what is the spring ..
A particle of ionizing radiation creates 4900 ion pairs in the gas inside a Geiger tube as it passes through. What minimum energy was deposited
power windmills turn in response to the force of high-speed drag. for a sphere moving through a fluid the resistive
A 0.75 H inductor is in series with a fluorescent lamp, and the series combination is across the 120 V rms, 60 Hz power line. Calculate the resistance of the lamp
A horizontalforce of 190 N is applied toa stationary wooden box in one direction, and a 700 N horizontal force is applied in theopposite direction. What additional force is needed for the box toremain stationary?
A package of supplies is to be dropped from an airplane so that it hits the ground at a designated spot near some campers, What should the angle be between the horizontal and the pilot's line of sight to the drop point
The motion detector used in a physics lab sends and receives 49.55 kHz ultrasonic pulses. find the wavelength of the waves emitted by the motion detector
a 11.5 nc charge is at x 0 cm and a -1.0 nc charge is at 6 cm. at what point or points on the x-axis is the electric
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