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An explorer is caught in a whiteout (in which the snowfall is thus thick that the ground cannot be distinguished from the sky) while returning to base camp. He was supposed to travel due north for 4.2 km, but when the snow clears, he discovers that he actually traveled 7.8 km at 48 degree north of due east.
(a) Find how far must he now travel to reach base camp?
km
(b) Find in what direction must he travel?
° (counterclockwise from due east)
Sketch a free body diagram for the hot air balloon. When the burner is turned on what force is required to cause an upward acceleration of 5m/s squared?
A 75 N man stands in the middle of a frozen pond of radius 20.0 m. He is unable to get to the other side because of a lack of friction between his shoes and the ice. How long does it take him to reach the south shore
A small grinding wheel has a moment of inertia of 4.0×10-5 kg m^2. What net torque must be applied to the wheel for its angular acceleration to be 160 rad s^2.
A 9400 kg boxcar traveling at 16 m/s strikes a second boxcar at rest. The two sticktogether and move off with a speed of 8.0m/s. What is the mass of the second car
In two attempts, a javelin is thrown at angles of 35° and 60° respectively, to the horizontal from the same height and at the same speed in each case. How many times farther
scientists are experimenting with a kind of gun that may eventually be used to fire payloads directly into orbit. in
An assistant standing on the level ground 150 m downrange from the launch point throws an apple straight up with the minimum initial speed necessary to meet the path of the arrow. Elucidate the initial speed of the apple?
Two waves are traveling in opposite directions on the same string. The displacements caused by the individiual waves are given byy1=(30.0 mm)sin(9.39πt -1.66πx) and y2=(39.0mm)sin(3.54πt + 0.552πx). Note that thephase angles (9.39πt - 1.66πx) and(3..
A steel wire with mass 28.7 g and length 1.6 m is strung on a bass so that the distance from the nut to the bridge is 1.10 m. Calculate the wavelength of the string's vibration
A 340 kg piano slides 3.7 m down a 33° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. The effective coefficient of kinetic friction is 0.37.
A puck on a frictionless, horizontal air table is attached to a string that passes down through a hole in the table. what is the new speed of the puck
A golf ball is struck with a five iron on level ground. It lands 92.7 away 4.10 later. What were (a) direction and (b) magnitude of the initial velocity.
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