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The temperature of a gold bar rises by 10.0°C when it absorbs 0.677 kJ of energy by heat. The mass of the bar is 525 g. Determine the specific heat of gold from these data.
A camera flash delivers 3.5kW of light power for 1.9ms, Find the total momentum carried by the flash p
A cord is used to lower verically a block of mass M a distance d at a constand downward acceleration of g/4. Find the work done by the cord on the block
A light but rigid stick is attached to a small weight. The other end of the stick is attached to a pivot. The pivot allows the stick and weight to spin in a vertical circle. how fast should the weight be thrown downward
Starting from rest, a 6.00-kg block slides 3.00 m down a rough 30.0° incline. The coefficient of kinetic friction between the block and the incline is ?k = 0.436. Determine the work done by the force of gravity
A balance beam has two clockwise torques applied, 22N @ 5.5m, and 110N @ 2.4 m. Balance is achieved with a 55N force. How far is that force from the balance point
A factory worker accidentally releases a 200 kg crate that was being held at rest at the top of a ramp that is 3.9 m long, How fast is the crate moving as it reaches the bottom of the ramp
Mitch is driving the Batmobile (which he stole). He is driving at a constant velocity of 40 m/s. What is the acceleration of the Batmobile
At what angle do the equipotentials intersect the edge of the conduction paper? why? Hint: the electric current flow at any point is in the direction of any directly proportional to the electric field vector.
a heater and a motor are powered in parallel from the same 220v power supply. the motor draws 2A and the heater draws 17A. what is the total power dissipated by the dryer
The sound of a truck horn, observed when the truck is stationary, is 440 Hz. A drunk is sitting in the middle of the road at night. How rapidly is the truck approaching him, in m/s2
You are at the controls of a particle accelerator, sending a beam of 3.60×10^7 m/s protons (mass ) at a gas target of an unknown element. Find the mass of one nucleus of the unknown element
A 0.2kg steel ball is dropped straight down onto a hard horizontal floor and bounces straight up. Determine the magnitude of the impulse delivered to the floor by the steel vessel
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