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Q. An intergalactic rock star bangs his drum every 1.30s. A person on earth measures that the time between beats is 2.30s. How fast is the rock star moving relative to the earth?
Q. A steel ball with radius 1 cm is rolling along a table with speed 20.00 cm/sec when it starts to roll up an incline. How high above the table level would it rise before stopping?
A 5.25 kg ball of clay is thrown downward from a height of 2.79m with a speed of 4.41 m/s onto a spring with k=1530 N/m. The clay compresses the spring a certain maximum amount before momentarily stopping.
What is the electric potential energy of the system. A man strikes a long aluminum rod at one end. Another man, at the other end with his ear close to the rod, hears the sound of blow twice (once through the air and once through the rod), with a 26..
how far is this point horizontally from the end of the ramp. A skateboarder shoots off a ramp with a velocity of 6.2 m/s, directed at an angle of 61° above horizontal. The end of the ramp is 1.5 m above the ground.
A certain freely falling object requires 1.7s to travel the last 37m before it hits the ground. From what height above ground did it fall.
What is the amplitude of the subsequent oscillations. A catcher "gives" with a baseball when catching it. If the baseball exerts a force of 519 N on the glove, so that the glove is displaced 10.0 cm, how much work is done by the ball.
find the mass defect (in u) for (a) helium-3 (2He3), which has an atomic mass of 3.016 030 u, and (b) the isotope of hydrogen known as tritium (1T3), which has an atomic mass of 3.016 050 u.
A grocery cart with mass of 12kg is being pusch at constant speed up a flt 15 degree ramp by force which act at an angle 17 degree below the horizontal line.
What shape would you expect the sampling distribution of x bar for n=84 juveniles to have? Does your answer depend on shape of the distribution of verbal IQ scores for all juveniles.
what is the minimum coefficient of static friction required between tires and race track if the car is to stay on the track at a speed of 130m/s.
The train comes to a stop 6.0 m from the point at which it was released. What is the magnitude of train's acceleration after its wheel begins to stick.
What is the tension in the cord in the original situation. A cube of ice is taken from the freezer at -9.3°C and placed in a 95 g aluminum calorimeter filled with 297 g of water at room temperature of 20°C. The final situation is observed to be all..
Assume this is the innermost line of interference (m = 0) and that speed of sound in air is 331 m/s, find the (linear) frequency of the sound in Hz.
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