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a 7900 kg car accelerates from rest at the top of a drivewaythat is sloped at an angle of 16.7 degrees with the horizontal. anaverage frictional force of 4500 newtons impedes the car's motionso that the car's speed at the bottom of the driveway is 4.9 metersper second. the acceleration of gravity is 9.81 meters per secondsquared. what is the length of the driveway? answer in units ofmeters.
A raft has a surface area of 100m^2 and a height of 10.0cm. If it is constructed of yellow pine and floating in a lake, calculate how much of the raft will be above the waterline
An AC voltage of rms value 413 V and frequency 75 Hz is connected across a light bulb with a resistance of 471 ohms. What is the rms current and maximum current
A luminous object is 5.00 m from a wall. You are to use a concave mirror to project an image of the object on the wall, with the image 2.23 the size of the object
A water molecule, which is electrically neutral but has a dipole moment of magnitude p = 6.20·10-30 C m, Calculate the magnitude of the net force
What is total mechanical energy of the motion
A current of 10.0 mA is maintained in a single circular loop with a circumferenceof 1.20 m. A magnetic field of 0.880 T is directed parallel to the plane of the loop. What is the magnitude of the torque exerted by the magnetic field on the loop?
i explain how the earths geomagnetic field is created? hint be sure to include thedirection of the earths current.ii
A civil engineer is asked to design a curved section of roadway that meets the following conditions: With ice on the road, when the coefficient of static friction between the road and rubber is 0.11, a car at rest must not slide into the ditch and..
The equations for free fall at the surface of Mars and Jupiter (s in meters, t in seconds) are Mars, s = 1.86t^2; Jupiter, s = 11.44t^2. How long would it take an object falling from rest to reach a velocity of 100 km/hr on each planet?
a speedboat starts from rest and accelerates at 2.01 ms2 for 7.35 s. at the end of this time the boat continues for an
a 60kg sprinter starts from rest and reaches a speed of 8.5ms in 1.8s. during this time there is negligible air
the highest recorded waterfall in the world is found at angel falls in venezuela. its longest single waterfall has a
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