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A dipole consisting of charges 230 apart, is placed between two very large (essentially infinite) sheets carrying equal but opposite charge densities of 145. What is the maximum potential energy thi
A diver 60 deep in 10 fresh water exhales a 1.5-cm-diameter bubbleWhat is the bubble's diameter just as it reaches the surface of the lake, where the water temperature is 20 ? Assume that the air b
Water flows steadily from an open tank. The elevation of point 1 is 10.0 m, and the elevation of points 2 and 3 is 2.00 m. The cross-sectional area at point 2 is 0.0480 m 2; at point 3 it is 0.0160
A man takes his dog out for a walk. The dog has no legs and is dragged along the sidewalk on a little sled (mass of dog + sled = 13.0kg). The sidewalk exerts a frictional force of 14.0N. If the man
A gorilla weighs 8.00*10^2N and swingsfrom vine to vine. as the gorilla grabs a new vine, both vines make an angle of 30.0 degrees with the vertical. in such a condition of state of equilibrium, wh
The bullet strikes the board with a speed of 455 m/s and emerges with a speed of 279 m/s. (To simplify, assume that the bullet accelerates only while the front tip is in contact with the wood.) Wha
a 10.0 kg box starts at rest and slides 3.5 m down a ramp inclined at an angle of 20 degrees with the horizontal. if the coefficient of friction between the ramp surface and the crate is 0.18, what
A 78-kg man stands on a spring scale in an elevator. Starting from rest, the elevator ascends, attaining its maximum speed of 1.2 m/s in 0.74 s. The elevator travels with this constant speed for 5.0
A 10.5 g bullet embeds itself in a 0.450 kg block, which is attached to a spring of force constant 30.2 N/m. If the maximum compression of the spring is 1.7 cm, find the following. Find the time for
A steel safe with mass 2200 kg falls onto concrete. Just before hitting the concrete its speed is 40 m/s, and it smashes without rebounding and ends up being 0.06 m shorter than before. What is the
a 6-kg, 5-m ladder leans against a frictionless wall. the foot of the ladder is 3m from the wall. the coefficient of friction between the foot of the ladder and the floor is 0.38. what is the direct
The russell traction system shown below is used for a fractured femur. identify the forces acting on the femur. if the weigh hang is 5.0kg, find the force needed to immobilize the femur. what will
A 0.2 kg aluminum plate, initially at 20 C, slides down at a 15 m long surface, incline at a 30 degree angle to the horizontal. The force of kinetic friction exactly balances the component of gravi
A map of a burned area obtined from remote sensing contains 120 pixels. The remote sensing image shows that the fire is isolated to 73 of the 120 pixels.
A child pushes a merry-go-round from rest to a final angular speed of 0.50 rev/s with constant angular accelaration.In doing so,the child pushes the merry-go-round 2.0 revolutions.What is the angul
A jetliner is moving at a speed of 365 m/s. The vertical component of the plane's velocity is 33.4 m/s. Determine the magnitude of the horizontal component of the plane's velocity.
IN a rifle barrel a 15.0 g bullet is accelerated from rest to a speed of 780 m/s. Find the work that is done on teh bullet. Assuming that the rifle barrel is 72.0 cm long find the magnitude of the
A rocket-powered hockey puck moves on a horizontal frictionless table. The figure at the top of the next column shows graphs of and the x- and y-components of the puck's velocity. The puck starts at
John Glenn weighed 640 N on earth's surface. How much would he have weighed if his mercury spacecraft had remained at twice the distance from the center of the earth? Why is it said that an astrona
A helium nucleus and a neon nucleus are separated by a distance of 3.0 nm.The charge of the helium nucleus is +2e while that of a neon nucleus is + 10e. Find the magnitude of the electrostatic forc
A helium nucleus and a neon nucleus are separated by a distance of 3.0 nm.The charge of the helium nucleus is +2e while that of a neon nucleus is + 10e. Find the magnitude of the electrostatic force
A proton moving at 3.90 106 m/s through a magnetic field of magnitude 1.80 T experiences a magnetic force of magnitude 8.80 10-13 N. What is the angle between the proton's velocity and the field? (E
An electron moves in the positive x-direction a distance of 2.38 m in 2.95 10-8 s, bounces off a moving proton, and then moves in the opposite direction a distance of 1.63 m in 3.53 10-8 s. What is
For each graph of vx vs. t in the left column, choose the letter (a-i) corresponding to the appropriate description of motion. Not all descriptions will be used. Assume the usual coordinate system
A pitcher throws a 0.5-kg ball of clay at a stationary 6-kg block of wood. the clay sticks to the wood on impact, and their combined velocity afterward is 3 m/s. what was the original speed of the b