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An iceboat is at rest on a frictionless frozen lake when a sudden wind exerts a constant force of 140 Newton, toward the east, on the boat. Due to the angle of the sail, the wind causes the boat to slide in a straight line for a distance of 6.6 meter in a direction 26 degree north of east. Find the kinetic energy of the iceboat at the end of that 6.6 meter?
A catcher catches a 145 g baseball traveling horizontally at 38.0 m/s. How large an impulse does the ball give to the catcher
A large rectangular raft (density 650kg/m3) is floating on alake. The surface area of the top of the raft is 8.2m2 andits volume is 1.80m3, Calculate the height h of the portion of the raft that is abovethe surrounding water
A flint glass plate (n = 1.66) rests on the bottom of an aquarium tank. Calculate the apparent thickness of the plate as viewed from above the water
Two children with masses of 23 and 41 kg are sitting on a balanced seesaw. If the lighter child is sitting 3 m from the center, where is the heavier child sitting
a student playing tetherball hits the ball so it moves in acircle around the central pole. What is the new angle of the ball if he hits the ball at the same tangential speed
A 120-V motor has mechanical power output of 3.60 hp. It is 87.0% efficient in converting power that it takes in by electrical transmission into mechanical power. Find the current in the motor
Party stores sell small tanks containing 40 g of helium gas. If you use such a tank to fill 0.012 m^3 foil balloons, how many balloons can you expect to fill
What is the minimum energy of a 2.7 g Ping-Pong ball in a 10-cm-long box, What speed corresponds to this kinetic energy
A photographic image of a building is 0.0920 m high. The image was made with a lens with a focal length of52.0mm. determine the height of the building
The speed of an arrow ?red from a compound bow is about 51 m/s. An archer sits astride his horse and launches an arrow into the air, What is the height of the projectile
A car rounds a curve that is banked inward. The radius of curvature of the road is R = 139, the banking angle is ? = 31°, Find the minimum speed that the car can have without slipping
A rectangular plate is rotating with a constant angular speed aboutan axis that passes perpendicularly through one corner, as thedrawing shows. The centripetal acceleration measured atcorner A is n times as greatas that measured at corner B.
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