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Sam, whose mass is 74 kg, takes off accross level snow in his jet powered skis. The skis have a thrust of 189 N and a coefficient of kinetic friction on snow of 0.1. Unfortunatately, the skis run out of fuel after only 9 s.
What is Sam's top speed?
An electric field of 8.55x10^5 V/m is desired between two parallel plates, each of area 35.00 cm^2 and separated by 2.45mm of air. What charge should be on each plate.
A baseball pitcher throws a fastball at a speed of 35m/s. The acceleration occurs as the pitcher holds the ball in his hand and moves it throughout an almost straight-line distance of 3.7 m. estimate the acceleration, assuming that it is constant ..
A force of 323N is applied horizontally to a crate in order to displace crate 30m across a level floor at a constant velocity. As a result of this work.
You're carrying a 4 m long, 23 poles to a construction site when you decide to stop for a rest. You place one end of the pole on a fence post and hold other end of the pole 35 from its tip. How much force should you exert to keep the pole motionle..
Find out an effective coefficient of kinetic friction
Evangelista Torricelli was the first to put forward the idea that we live at the bottom of an ocean of air. (i) Given the value of the atmospheric pressure at the surface of the Earth.
The drawing shows one horizontal wire with the current going up and one vertical wire with the current going to the right. Point A is dH to the right and dV above the intersection. Point B is dH to the left and dV below the intersection.
Two sound sources radiating in phase at a frequency of 485 Hz interfere such that maxima are heard at angles of 0 and 22° from a line perpendicular to that joining the two sources. Find out the separation between the two sources.
On your wedding day your lover gives you a gold ring of mass 3.98 g. 59 years later its mass is 3.73 g. On the average how many atoms were abrated from the ring during each second of your marriage? The atomic mass of gold is 177 u.
One liter of water is 41C is used to make iced tea. How much ice at 0 C must be added to lower the temperature of the tea to 17C? The specific heat of water is 1 cal/g C and latent heat of ice is 79.7 cal/g. Reply in units of g.
A gun is fired vertically into a 2.00 kg block of wood at rest straight above it. If the bullet has a mass of 21.0 g and a speed of 198 m/s, how high would the block rise into the air after the bullet becomes embedded in it.
Assume a car's brakes can produce an acceleration of -7 m/s2. If the car is travelling at an initial speed of 28.0m/s, what is the minimum distance necessary to stop car.
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