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1. A runner whose mass is 56 kg runs in the +x direction at a speed of 5.5 m/s. What is the kinetic energy of the runner? (J)
2. The runner turns around and runs in the -x direction at the same speed. Now what is the kinetic energy of the runner?(J) Please due tonight!
The clarinet is well modeled as a cylindrical pipe that is open at one end and closed at the other. Find the wavelength and frequency of the third normal mode of vibration
An electric utility company supplies a customer's house from the main power lines (120 V) with two copper wires, find the power delivered to the customer
an electron is shot directly toward the center of a large metal plate that has surface charge density -1.00 × 10-6 C/m2. how far from the plate must the launch point be
define the potential difference between the plates.With what force must the player push the puck so that his force just equals the frictional force.
A car traveling at 24 m/s runs out of gas while traveling up a 9 degree slope. How far will it coast before starting to roll back down.
The police at the scene of the accident observed that the point of impact is 120 m from the base of the cliff. Explain how fast was the car traveling when it went over the cliff?
Assume that, as lying on a beach near the equator watching the Sun set over a calm ocean, you start a stopwatch just as the top of the Sun disappears. You after that stand, elevating your eyes by a height H = 1.90 m.
A playground merry-go-round (uniform disk with mass M=150kg and radius R=2m) rotates on a frictionless axle through its center. What is the kinetic energy of the child-merry-go-round-system
A homemade capacitor is assembled by placing two 9-in. pie pans 4cm apart and connecting them to the opposite terminals of a 6-V battery, Estimate the work done by the battery to charge the plates
A cooling fan is turned off when it is running at 880rev/min . It turns 1000 revolutions before it comes to a stop. What was the fan's angular acceleration, assumed constant
The rear window of a van is coated with a layer of ice at 0°C. The density of ice is 917 kg/m3, What is the maximum thickness of ice above this area that the defroster can melt in 3.9 minutes
A cruise ship sails 150 km east, then 250 km northwest, and then 100 km at 30° east of south, Find the magnitude and the direction of the last leg of the journey
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