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A projectile is launched with an initial velocity of 80 m/s at an angle of 30º above the horizontal. Neglecting air resistance, what is the horizontal component of the projectile's acceleration?
a block starts at rest and slides down a frictionless track it leaves the track horozontally flys through the air and
child whose mass is 30 kg sits on a merry-go-round at a distance of 2 m from the center. What is the magnitude of the net force (in Newton) acting on the child?
A 98.8-kg baseball player slides into second base. The coefficient of kinetic friction between the player and the ground is ?k = 0.596. What is the magnitude of the frictional force
A rock is dropped from a tree of height 24 m into a lake (depth 6.0 m) below. What is the total elapsed time
An airplane is flying with a velocity of 90 m/s at an angle of 25 above the horizontal. When the plane is a distance 126 straight above a dog that is standing on level ground, a suitcase drops out of the luggage compartment.
A motor rotating a gringing wheel which is 5m in radius, isrotating at 60 rev/min. What is the initial speed of the wheel
during the spin cycle of your clothes washer the tub rotates at a steady angular velocity of 32.5 rads. find the
A 0.180 kg baseball, travelling 32.0 m/s, strikes catcher's mitt that recoils 13.0 cm in bringing the ball to rest. What was an average force (in newtons) applied by the ball to the mitt.
A human eyeball is about 2.1 long, and the pupil has a maximum diameter of about 7.5 . What is the "speed" of this lens
Two identical positive charges exert a repulsive force of 6.6 x10-9 N when separated by a distance of 5.4 10-10 m. what is the charge of each.
A mass of 6 kg is moving at 31 m/s in the positive x direction. What is the magnitude of the velocity of the masses after the collision in m/s
A sample of gold of volume 2.00*10^-5 m^3 is available to make a wire. If the length of the wire is to be 50.0 cm and all the gold is used, what will be resistance of the wire? (Gold has a resistivity of 2.44*10^-8Ωm and a temperature coefficient of ..
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