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An electric field is = sign(x)·(340 N/C), where sign(x) equals ?1 if x < 0, 0 if x = 0, and +1 if x > 0. A cylinder of length L = 16 cm, What is the flux through the curved surface of th
An 8.56-kg block slides with an initial speed of 1.80 m/s down a ramp inclined at an angle of 27.4° with the horizontal. compute the distance the block slides before coming to rest
Four charges are placed on the corners of a square that lies in the first quadrant of the x-y plane with sides of length 3m. Find the force (magntude and direction) on the charge at the origin
Electrons in an x-ray tube are accelerated through 110 kV and directed toward a target to produce x rays. Calculate the power of the electron beam
A dockworker loading crates on a ship finds that a 18-kg crate, initially at rest on a horizontal surface, Find the coefficients of static and kinetic friction between crate and floor
A positron is a particle with the same mass and magnitude charge as an electron, but a positron has a positive charge. how fast is the positron moving
Only two forces act on an object (mass=3.76 kg), as in the drawing. Find the direction (relative to the x axis) of the acceleration of the object
A camera is supplied with two interchangeable lenses, whose focal lengths are 41.0 and 150.0 mm. What is the height (including sign) of her image on the image sensor
At a time when mining asteroids has become feasible, astronauts have connected a line between their 3310-kg space tug, How much time does it take for the ship and the asteroid to meet
You lay a mirror flat on the floor with one edge against a wall and aim a laser at the mirror. Find the angle of incidence of the laser ray on the mirror
The index of refraction of silicate flint glass for red light is 1.620 and for violet light is 1.660. What is the angular separation between the red and violet components of the spectrum that emerges
The electric potential immediately outside another charged conducting sphere is 190 V, Determine all possible values for the radius of the sphere
The 65.0 kg climber in the figure is supported in the "chimney" by the friction forces exerted on his shoes and back. What is the minimum normal force he must exert
Lightning occurs when there is a flow of electric charge (principally electrons) between the ground and a thundercloud. How much charge flows between the ground and the cloud
A railroad car with a mass of 11600 kg collides and couples with a second car of mass 18600 kg that is initially at rest. what is the final velocity of the two railroad cars after they couple
An arrangement of two pulleys, as shown in the figure, is used to lift a 46.4-kg mass a distance of 3.20 m above the starting point. What is the mechanical advantage of this system
Sam pushes a 10.0-kg sack of bread flour on a frictionless horizontal surface with a constant horizontal force of 4.0 N starting from rest. What is the speed of the sack after Sam has pushed it a dis
In an amusement park ride, cars are suspended from L = 4.20 m cables attached to rotating arms at a distance of D = 6.06 m from the axis of rotation. What is the angular speed of rotation
During normal operation, a computer's hard disk spins at 7200 rpm. what is the average angular acceleration of the hard disk
A spacecraft is in orbit around a planet. The radius of the orbit is 2.9 times the radius of the planet (which is R = 71474 km). What is the period of the spacecraft's orbit
A metal ball bearing 1.0 cm above the bead feels a 0.035 N downward electric force, What is the charge on the ball bearing
A drag racer crosses the finish line of a 304.8 m track with a final speed of 126 m/s. how long would it take to finish the race
Two balls of mass 0.6 kg and 0.8 kg are connected by a low-mass spring. This device is thrown through the air with low speed, what is the total momentum of the device
A 1,576-kg car is moving down a road with a slope (grade) of 11% while speeding up at a rate of 3.6 m/s^2. What is the direction and magnitude of the frictional force
In the model of the hydrogen atom created by Niels Bohr, the electron moves around the proton at a speed of 2.20 106 m/s in a circle of radius 5.30 10-11 m. determine the magnetic moment associated