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A football player pushes a 380 kg tackling sled with a force of 750 N. If the resulting acceleration of the sled is 1.5 m/s2, what is the magnitude of the dynamic friction force opposing the motion of the sled? what is the coefficient of dynamic friction between the sled and the ground?
plz show all work and formulas
An airplane can be made invisible to radar by coating the plane with a thin layer of an antireflective material. If radar waves have a wavelength of 3.0 cm.
Suppose you are at the earth's equator and observe a satellite passing directly overhead and moving from west to east in the sky. How far above the earth's surface is the satellite's orbit
It can be shown that the maximum speed a black hole can spin is where the angular momentum L is given by Lc=GM2. Obtain what percent is this of its maximal rotation as a black hole
An automobile tire has a radius of 0.430 m, and its center moves forward with a linear speed of v = 14.0 m/s. Determine the angular speed of the wheel
During recess, Maria, who has mass27.0 kg, hangs motionless on the monkey bars, with both handsgripping a horizontal bar. What is the tension in each of her arms
question 1an infinitely long uniformly charged cylinder of radius r is shown.ausing symmetry arguments sketch the shape
When in orbit, a communication satellite attracts the earth with aforce of 19.0 kN and the earth-satellite gravitational potential energy (relative to zero at infiniteseparation) is -1.59 multiplied by 1011 J. Find the satellite's altitude above th..
A golf ball is hit on level ground at 30 m/s and 29 degree above the horizontal. determine how far does it travel horizontally
The pilot of an airplane executes a constant-speed loop-the-loop maneuver in a vertical circle, What is his apparent weight at the highest point of the circle
A block of mass m=1.40kg slides along a horizontal table with speed Vo=2.50m/s. How far did the spring compress when the block first momentarily come to rest
A 2.00-nF capacitor with an initial charge of 5.06 µC is discharged through a 1.28-k? resistor. What is the maximum current in the resistor
question a spherical object has an outside diameter of 50.0 . its outer shell is composed of aluminum and is 1.80
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