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A woman performs a vertical jump. How much work was done on this woman during the jump? The jump begins in the standing position and ends the instant the woman leaves the floor. The situation includes: Womans mass: 70kg Height of center of mass at start: 1.0m Height of center of mass at take off: 1.5 m Initial vertical velocity (standing velocity): 0.0 m/s Vertical Velocity at take off: 3.5 m/s
The angular speed of the shaft of a car's engine is 329 rad/s. Find how many revolutions does it complete in 3.0 hours
You throw a stone vertically upward with an initial speed of 6.0m/s from a third-story office window. Find the speed of the stone just before it hits the ground
A wooden block weighing 9 N is at rest ontop of a wooden desk. The coefficient of static friction betweenthe block and the desk is 0.54. Find the minimum horizontal force required to move the block if the following occurs.
An electron moves in a circular path perpendicular to a magnetic field of magnitude 0.260 T. estimate the radius of the circular path
A 54-kg skier coasts up a snow-covered hill that makes an angle of 25° with the horizontal. Find the work done by the kinetic frictional force that acts on the skis
When a hammer strikes a nail, it is compressed along its length. Suppose that a steel nail 8.00 cm long, What average force was exerted on the nail by the hammer
a 60 kg skier leaves the end of a ski-jump ramp with a velocity of 24 ms directed 25 degrees above the horizontal.
A box is pulled along the floor with a rope. The tension in the rope is 120 N and the rope makes an angle of 50 degree with respect to the ground. Determine the velocity of the box
A velocity selector 1ms a magnetic field of magnitude 0.3 T perpendicular to an electric field of magnitude 0.32 MV/m. The mass of an electron is 9.11 times 10-31 kg. How much energy must electrons have order to pass through undeflected? Answer in un..
One kilowatt-hour (kWh) is the amount of work or energy generated when one kilowatt of power is supplied for a time of one hour, Determine the number of joules of energy in one kilowatt-hour
a jungle veterinarian with a blowgun loaded with a tranquilizer dart and a sly 1.50 monkey are each 25.0 above the
Water has a mass per mole of 18.0 g/mol, and each water molecule (H2O) has 10 electrons. How many electrons are there in 6.24 liters of water
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