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The first stage of a trip has a displacement vector in the negative x direction. The second stage has a displacement at an angle of 30.0 above the +x axis. The final stage has a displacement of magnitude 15km and points in a direction 40degrees below the +x axis. If after all three stages you end up where started, what was the magnitued of the displacement of the first two stages.
A coild of wire, initially carrying no current, has a current of 10 A established in .4 seconds. What is the total magnetic flux through the coil when the current is 10 A
A Japan Airlines Boeing 747 accelerates from rest to lift-off speed of 78.51 m/s in 28.20 s. What is the mass of the plane
A hockey player is standing on his skates on a frozen pond when an opposing player, moving with a uniform speed of 14 m/s, skates by with the puck. Determine how far has he traveled in that time
A race car accelerates uniformly as it leaves the pit area, going from rest to 330 km/h in a semi circular arc with a radius of 200 meter. Evaluate the tangential acceleration of the car
a potters wheel of radius 0.19 m is turned on at t 0 and accelerates uniformly. after 63 s the wheel has an angular
Two 4.0 cm× 4.0 cm electrodes spaced 2.0 mm apart form a parallel-platecapacitor. What is the charge on each electrode
A 2.2 kg wood block hangs from the bottom of a 1.2 kg , 1.0-m-long rod. The block and rod form a pendulum that swings on a frictionless pivot at the top end of the rod. A 11g bullet is fired into the block, where it sticks, causing the pendulum to..
Three people are carrying a horizontal ladder 4.00m long. One of them holds the front end of the ladder, and the other two hold opposite sides of the ladder the similar distance from its far end. What is the distance of the latter two people from t..
The bungee cord acts just like a coil extension spring with constant k = 4 lbf/ft and its unstretched length is L= 6 ft. At first the cord is loosely dangling but then becomes taut and goes into tension as soon as the skaters
the current increases from 10 ma to 45 ma in a 90 mh inductor over 10 s. what is the induced emf across the
Do sound waves exhibit diffraction effects? If so, determine the "slit" width that would diffract an audible sound wave (frequency between 20 Hz and 20 kHz). Would a doorway work or do you need a different sized opening?
What is the maximum positive potential energy. Write down an expression for U as a function of x, with U in joules and x in meters.
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