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A 25.00 kg block starts from rest at the top of a 24.0 m long 30.0° incline. Its kinetic energy at the bottom of the incline is 2940 J. How much work is done by friction?
A rocket moves upward from rest with an acceleration of 29.4 m/s2 for 4 seconds. It then runs out of fuel and continues to move upward. Neglecting any air resistance, how high will it rise?
An ideal gas initially at 20°C and 219 kPa has a volume of 4.70 L. It undergoes a quasi-static,, Find the heat added to the gas during the expansion.
Three charges are fixed in the x-y plane as follows: 1.4nC at the origin (0, 0); 2.4nC at (0.90m , 0); -2.1nC nC at (0, 1.25m)
drop a rock into a well. You hear the splash 2.40 s after you release the rock from rest. The speed of sound in air at the ambient temperature is 336 m/s. How far below the top of the well is the surface of the water?
What is magnitude of the net force on the student
The car and minivan collide and stick together. Suppose the direction of the wreckage after the impact is 42.0° above the x axis.
A Big Mac has 3,100,000 Joules of chemical energy, what is the cost of the electric energy equivalent to the energy in a Big Mac
A 7.80-g bullet moving at 610 m/s penetrates a tree trunk to a depth of 5.80 cm, Use work and energy considerations to find the average frictional force that stops the bullet
A coil of inductance 70 mH and unknown resistance and a 0.85 µF capacitor are connected in series with an alternating emf of frequency 980 Hz. what is the resistance of the coil
A 53 kg skier skis directly down a frictionless slope angled at 12° to horizontal. Choose the positive direction of the x axis to be downhill along the slope.
Throughout a hard sneeze, your eyes may shut for 0.44s. If you are driving a car at 98 km/h during such a sneeze, how far does the car move during that time.
You drop a stone into a deep well and hear it hit the bottom 2.60 s later. This is the time it takes for the stone to fall to the bottom of the well.
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