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One can not align the apparatus to eliminate entirely the effects of the Earth's magnetic field. calculate the component of the earth magnetic field perpendicular to the entering electron beam
A person with mass m1 = 52 kg stands at the left end of a uniform beam with mass m2 = 109 kg and a length L = 3.1 m. What is the location of the center of mass of the system
A heavy sled is being pulled by two people as shown in the figure. The coefficient of static friction between the sled and the ground is ?s = 0.571, what is the minimum rope tension required to get
Digital bits on a 12.0-cm diameter audio CD are encoded along an outward spiraling path that starts at radius R1=2.5cm, Determine the total length of the spiraling path
Two dogs pull horizontally on ropes attached to a post; the angle between the ropes is 60.0?. Dog A exerts a force of 272N , and dog B exerts a force of 346N. Find the magnitude of the resultant for
A dockworker applies a constant horizontal force of 88.0N to a block of ice on a smooth horizontal floor. The frictional force is negligible. What is the mass of the block of ice
A hot-air balloon consists of a basket, one passenger, and some cargo. Let the total mass be M. Find the upward lift force in terms of the initial total weight Mg
The equation of a transverse wave traveling along a very long string is y = 5.5 sin( 0.055?x + 36.0?t ), What is the maximum transverse speed of a particle in the string
A Van de Graa? generator has a potential di?erence of 2.35 MV between the belt and the outer shell. What minimum power is needed to drive the moving belt
One of the fastest recorded pitches in major-league baseball, thrown by Tim Lincecum in 2009, how far would the ball fall vertically by the time it reached home plate, 60.5 ft away
A 110-kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 370N. What is the final speed of the crate
A shel is fired with a horizontal velocity in the positive x direction from the top of an 80-m high cliff. Determine the initial speed of the shell
A poor artist might approximate a flower as a series of radial lines and circular arcs. What is the direction of the magnetic field
a car is at position (x1,y1)=(4m, 5m) at time t1= 1 sec. find the (size of the) component of the average velocity along the x-axis
Starting from its nest, an eagle flies at constant speed for 4.0min due east, then 4.2min due north. How long is the eagle in the air
A slab of copper of thickness b = 6.944×10-1 mm is thrust into a parallel-plate capacitor of C = 7.00×10-11 F of gap d = 5.0 mm, How much work is done on the slab as it is inserted
A bare helium nucleus has two positive charges and a mass of 6.64 multiplied by 10-27 kg. What voltage would be needed to obtain this energy
A small block of mass 20.0 grams is moving to the right on a horizontal frictionless surface with a speed of 0.500 m/s. What is the speed of the 40.0 gram block after the collision
A student at another university repeats the experiment you did in lab. Her target ball is 0.860 m above the floor, What is the kinetic energy (in joules) of the target ball just after it is struck
Two bicycle tires are set rolling with the same initial speed of 3.40m/s along a long, straight road, What is the coefficient of rolling friction r for the tire under low pressure
A rock is thrown horizontally with a speed of 19 m/s from a vertical cliff of height 30 m. How far will it land from the base of the cliff
A 1.0 µF capacitor is connected in parallel with a 2.4 µF capacitor, What is the equivalent capacitance of this combination
As the drawing illustrates, two disks with masses m1 and m2 are moving horizontally to the right at a speed of v0. They are on an air-hockey table, find the velocity of disk 2 at that moment
A golf ball strikes a hard, smooth floor at an angle of 30.0?? and, as the drawing shows, rebounds at the same angle. What is the magnitude of the impulse applied to the golf ball by the floor
A proton is passing the origin. The magnetic field at the (x,y,z) position ( 1mm , 0 mm, 0 mm)is 1.0×10?13?^T. what is the direction of the proton