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An explorer is caught in a whiteout (in which the snowfall is so thick that the ground cannot be distinguished from the sky) while returning to base camp. He was supposed to travel due north for 4.9 kilometer, but when the snow clears; he discovers that he actually traveled 7.8 kilometer at 54 degree north of due east.
(a) Determine how far must he now travel to reach base camp?
(b) Find in what direction must he travel? (counter clockwise from due east)
A block of mass m is initially at rest on a frictionless surface. At time t = 0, an increasing force given by F = kt2 is applied to the block. Find the velocity and the displacement of the block as a function of time and graph x and v versus t.
A 7.50 kg box is pushed across a floor by a constant force applied force at 25 degrees. the box starts from rest and moves at 1.20 m/s after the box is moved 5.00 meters. The coefficient of friction is .320 What is the magnitude of the force applied ..
A piece of Nichrome wire passes a current of 0.933 A when a potential of 1.64 Volts is applied. What is the resistance of the wire
Two objects have the same kinetic energy. One has a speed that is 1.7 times greater than the speed of the other. What is the ratio of their masses
Gas is confined in a tank at a pressure of 12.6 atm and a temperature of 23.0°C. what is the pressure of the gas remaining in the tank
An electron passes through a point 3.27 cm from a long straight wire as it moves at 37.3% of the speed of light, Find the magnitude of the electron\'s acceleration at that point
A man pulls a toboggan for a distance of 40.0 meter along the snow with a rope directed 20.0 degree above the snow. Find how much work is done if the same tension is directed parallel to the snow
A stone is dropped from the top of the cliff. The splash it makes when striking the water below is heard 3.5 seconds after it is dropped. How high is the cliff? Presume that the speed of sound in air is 343 m/s and g = 9.8 m/s2.
You are driving along a highway at 25 m/s when you hear the siren of an emergency vehicle traveling in the opposite direction on the other side of the highway. What is the speed of the vehicle
A 1408.0 g mass is on a horizontal surface with ?k = 0.39, and is in contact with a massless spring with a force constant of 526.0 N/m which is compressed. Calculate the distance the spring was compressed
consider the possibility of a new design for an electric train. the engine is driven by the force on a conducting axle
Calculate the magnetic force per meter between two such lightning bolts separated by 10 meters. (This is mainly to give a feeling for the strength of the magnetic field)
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