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at some point in space,the x and y components of the electric field are Ex= 1.73 N/C, respectively and Ey= 3.75 N/, respectively. A positively charge particle placed at this point feels a force with a magnitude of 6.28X10^-6 N. What is the net charge of the particle?
Kathy tests her new sports car by racing with Stan, an experienced racer. Both start from rest, Find the distance she travels before she catches him
An air-track glider attached to a spring oscillates between the 12.0cm mark and the 63.0cm mark on the track. What is the maximum speed of the glider
Binoculars denoted as 7 x 50 have a total magnification of 7 times and objective lenses of 50- mm diameter. What is the focal length of the eyepiece
A ball of mass 522 g starts at rest and slides down a frictionless track. It leaves the track horizontally, striking the ground a distance of 1 m from the end of the track after falling the vertical distance 1.25 m from the end of the track.
A flywheel is spinning with its axle pointing along the east-west direction. You are standing west of the flywheel facing toward it. What is the direction of the flywheel's angular velocity
An alpha particle is a helium nucleus that consists of two protons bound with two neutrons. What is the alpha particle's speed
A block of ice of mass 0.4 kg and initial temperature T = 0 oC is placed in a sealed insulated container full of Helium gas, What is the mass of the liquid water
An object of mass 6.61 kg is released from rest and drops 1.90 m to the floor. The collision is completely inelastic. How much kinetic energy is lost during the collision
A 52kg ballet dancer stands on her toes during a performance with four square inches (26cm2) in contact with the floor. What is the pressure exerted by floor over the area of contact in some cases.
A block of weight 4.5 N is at rest on a horizontal table. An upward vertical force of 2.2 N is applied to the block by means of a string. What is the magnitude of the force exerted by the block
What is the pressure change in water going from a 3.0- cm-diameter pipe to a 2.1- cm-diameter pipe if the velocity in the smaller pipe is 5.0 m/s
Two kilomoles of a monatomic ideal gas are at a temp of 300K. The gas expands reversibly and isothermally twice its original volume. Calculate the work done by the gas. (Note that for an ideal gas U is proportional to T, so the change of U = 0 in ..
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