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A football player runs from his own goal line to the opposing team's goal line, returning to the fifty-yard line, all in 22.8 s.
1) Compute his average speed.
yd/s
2) Compute the magnitude of his average velocity.
A loudspeaker of mass 15.0 is suspended a distance of h = 2.30 below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of l = 3.30. What is tension in each cable.
Two identical guitar strings are prepared such that they have the same length (1.91 m) and are under the same amount of tension. compute the wave propagation speed on the guitar strings
A laser has a 200-W, 1.0 mm^2 cross-sectional area beam. find the amplitude of the electric and magnetic fields
a copper rod of length 1.12 m is lying on a frictionless table see the drawing. each end of the rod is attached to a
An object has an angular size of 0.0150 rad when placed at the near point (21.0 cm) of an eye. When the eye views this object using a magnifying glass, the largest possible angular size of the image is 0.0380 rad. What is the focal length of the magn..
A solid, horizontal cylinder of mass 7.1 kg and radius 0.57 m rotates with an angular speed of 5.84 rad/s about a fixed vertical axis through its center. What is the final angular speed of the system
A car of mass 1530 kg traveling at 24 m/s is at the foot of a hill that rises 110 m in 3.8 km. Find the average power delivered by the car's engine
The light energy that falls on a square meter of ground over the course of a typical sunny day is about 20 MJ. The average rate of electric energy consumption in one house is 1.0 kW. Find the energy consumption and area required by the solar cell
You need to connect a 43k\Omega resistor and one other resistor to a 110 \rm V power line. what should be the value of the unknown resistor
If you hold a 900cm2 square plane mirror 43cm from your eyes and can just see the full length of an 7.7m flagpole behind you, how far are you from the pole
Three resistors having resistances of R1=1.54ohms, R2=2.37ohms, and R3=4.78ohms respectively, Which resistor dissipates the most power and why
a charge of 5.50 x 10-9 c and a charge of -3.00 x 10-9 c are separated by a distance of 60.0 cm. find the position at
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