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A 0.800 kg particle has a speed of2.00 m/s at point A and kinetic energy of 7.30 J at pointB.
a) What is its kinetic energy atA?b) What is its speed at B?c) What is the net work done on the particle as it moves from A to B?
an ac generator has a frequency of 2.2 khz and a voltage of 240 v. an inductance l1 6.0 mh is connected across its
what must be done to increase the velocity of a rocket. Calculate the horizontal force that must be applied to produce an acceleration.
When you put water in a kitchen blender, it begins to travel in a 3-cm-radius circle at a speed of 1 m/s. How quickly is the water accelerating
A 200 gram metal block absorbs 1500 joules of heat, and its temperature changes by 150 degrees Celsius. What is the specific heat capacity of this metal
two students stand poised to leap off a high dive structure into teh swimming pool below. Student B is twice as massive as student A. Find the magnitude of velocity of canoe relative to river.
a firefighter with a weight of 715 n slides down a vertical pole with an acceleration of 3.10 ms2 directed downward.a
A 12.8 g bulletis fired horizontally into a 93 g woodenblock initially at rest on a horizontal surface. evaluate the speed of the bullet immediately before impact
High-speed stroboscopic photographs show that the head of a 240 g golf club is traveling at 44 m/s just before it strikes a 46 g golf ball at rest on a tee. Find the speed of the golf ball just after impact
a tube open at only one end is cut into two shorter nonequal lengths. the piece that is open at both ends has a
Describe the interference of two wave pulses with different amplitudes if they are a) in phase and b) completely out of phase
The classroom has a volume of about 100 m3. The pressure is atmospheric and the temperature is 75 ºF. What is the rms speed of the oxygen molecules
what is the power lost by a transmission line (made of Al) carrying 10 kA of current? By what percentage would the power loss change if the transmission line was switched to Cu
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