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Problem -
An explorer in Antarctica leaves his shelter during a whiteout. He takes 35 steps northeast, then 83 steps at an angle 60o north of west, then 41 steps due south. Assume his steps all have equal length.
What is the magnitude of the displacement that will return the explorer to his shelter?
What is the direction of the displacement that will return the explorer to his shelter?
The magnetic flux that passes through one turn of a 22-turn coil of wire changes to 4.0 Wb from 8.0 Wb in a time of 0.024 s. The average induced current in the coil is 235 A. What is the resistance of the wire?
A 400kg bead slides on a curve frictionless wire, startingfrom rest at point A. Find the distance the ball rises asit moves up the wire
As a crude model for lightning, consider the ground to be one plate of a parallel-plate capacitor and a cloud at an altitude of 510m to be the other plate.
The induced magnetic field at radial distance 6.7 mm from the central axis of a circular parallel-plate capacitor 2.0 x10-8 T. The plates have radius 4.1 mm. At what rate is the magnitude of the electric field among the plates changing?
A 1.10-mol sample of hydrogen gas is heated at constant pressure from 304 K to 422 K. Calculate the increase in its internal energy
A cylinderical water tank of radius 10ft and height 30ft is half filled with water. How much work is essential to pump all of the water out through a hole in the top of tank.
What is the least coefficient of friction between tires and road that will allow cars to negotiate the turn without sliding off the road.
A) Find v so that the rod swings up and is horizontal at the max height of the bob. B) Find the minimum v so that the rod will make a complete circle C) Find v so that the tension in the rod is zero at the top of its swing.
Consider an AC voltage source that produces a voltage given byV = Vmaxsin(2πft), with Vmax =19 V and f = 6.1 Hz. What is the instantaneous value of the voltage at t = 1.8 s?
The distance to a particular star, as measured in the earth's frame of reference, is 7.11 light years, How long does the trip take, according to observers on earth
A swimmer climbs onto an 11.6-kg Styrofoam float (density 158 kg/m3). The top of the float ends up just at the water surface. What's the swimmer's mass?
A racecar travelling at a constant speed turns in a circle with a radius of 10 m. what is the racecar's speed
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