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A 70.5-kilogram child starts from rest from the top of a frictionless slide that is 5.6 meters tall. The bottom of the slide is 25.0 centimetres above the ground.
What is the child's speed at the bottom of the slide?
A passenger walks from one side of a ferry to theother as it approaches a dock. What is the magnitude of the ferry's velocity relative to the water
The temperature of 2.00 moles of argon gas is lowered from 2.80 x 10^2 K to 1.90 x 10^2 K. Find the change in the average kinetic energy per atom.
A cyclist is pedaling at a cadence of 60, so the bicycle wheel make 60 rotations per minute around the axis through its center. What is the wheel's angular speed
a square metal plate of edge length 12.0 cm and negligible thickness has a total charge of 7.50times10-6 c. estimate
a light inelastic rope is wrapped around a cylinder passes over a pulley and is attached to one end of a spring of
A simple pendulum, 2m in length, is released from the rest when the support string is at an angle of 25 degrees from the vertical
A 0.09 kg arrow is pulled back in a bow. After being held still, it is let go, moving 25m/s after the 0.47 meters in which the arrow is in contact with the bow string. What work was done on the arrow by the bow string? What force was exerted by the a..
Three forces act on a moving object. One force has a magnitude of 82.8 N and is directed due north. What must be the direction of the third force
A 75-kg piece of metal has specific heat 430 J/kg°C and is initially at 950°C. To cool it down, it is dunked into 710 kg of oil that has a temperature of 32°C and specific heat of 2700 J/kg°C. Assuming that heat flows only between the oil and the m..
Three long wires (wire 1, wire 2, and wire 3) hang vertically. The distance between wire 1 and wire 2 is 20.0 cm.find the magnitude and direction of the current in wire 3
Radioactive isotopes often occur together in mixtures. assume a 480 sample contains , with a half-life of 12 days, and , with a half-life of 4.5 days.
a capacitor consists of two closely spaced metal conductors of large area separated by a thin insulating foil. it has a
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