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A 83.55kg woman walked a 5k race in 53.33 minutes.
1. what was her average speed in m/s?
2. what was her average momentum?
3. How much kinetic energy per second did she have based on this speed?
4. How much total kinetic energy was used to complete the race?
5. How much power did it take to complete the race?
6. She burned 323.37 calories, convert this to Joules.
7. based on answers from #4 and#6 how efficient was her body at converting food energy into mechanical energy?
What is the true gravitational acceleration and the centrifugal acceleration and how much work does the girl do to set herself and the merry-go-round into motion?
A fully equipped astronaut has a mass of 140 kg. If the astronaut has a weight of 675 N standing on the surface of a planet, what is the acceleration due to gravity on this planet?
your car engine just died. your were moving rightward at 25 m/s, but your car slows to a rest in a distance of 120 m. what net average force was exerted on the car
Two cars are each traveling at 27.0 m/s, and they are approaching each other. What frequency of is heard by the driver of the other car
Light is incident on a thin prism for which n= 1.5. Find the angle of deviation for the emerging beam
For a particular RLC series circuit, the capacitive reactance is 8.65 ?, What is the maximum voltage across the circuit
A dynamite blast at a quarry launches a rock straight upward, and 2.3 s later it is rising at a rate of 18 m/s, calculate blast speed at launch
A bungee jumper with mass 60.0kg jumps from a high bridge. after reaching his lowest point, estimate the unstretched length of the bungee cord assuming SHM
A very large number (N+1) polaroids are arranged in a sandwich, The transmission axis of each polaroid is at a constant angle, with respect to its predecessor
Express the time in terms of given quantities. T catch = ? How far from Car B's starting line will the cars be when Car B passes Car A? Express your answer in terms of known quantities.
Illustrate what effect does this transaction have on revenue or expense for the period?(b) Illustrate what effect does it have on stockholder's equity?
Ice of mass 48.5 g at -10.3° C is added to 188 g of water at 14.2° C in a 108 g glass container of specific heat 0.200 cal/g-°C, obtain the final temperature of the system
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