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Two charges q1 and q2 have a total charge of 16 C. When they are separated by 1.5 m, the force exerted by one charge on the other has a magnitude of 8 mN. Find q1 and q2 if (a) both are positive so that they repel each other, and q1 is the smaller of the two. (For the universal constant k use the value 8.99 109 N m2/C2.)
A laser is used in eye surgery to weld a detached retina back into place. The wavelength of the laser beam is 511 nm, while the power is 1.5 W. how many photons are emitted by the laser
An electron in the n = 6 state of a hydrogen atom makes a transition to the n = 3, What is the wavelength of the photon emitted
The electromagnet produces a field that is uniform throughout the volume between the faces. Describe the electric field that results in the region between the poles
A 7.0mW laser beam has a circular cross section with diameter 0.80mm, What is the maximum radiation pressure that this laser can exert on a mirrored surface
the forces exerted on the shoes and back of the 72-kg climber bythe walls of the chimney are perpendicular to the walls exertingthem. what is the magnitudeof the force exerted on his back
A lady pushes down on a 35.0 kg crate (constrained to move along a horizontal floor) at an angle of 47.3 degrees to the horizontal with a force of 125N along a frictionless surface. what is the normal force of the surface on the crate
consider a category five hurricane that has a maximum wind speed of 160 mph at the eye wall, 10 miles form the center of the hurricane. if the flow in the hurricane outside of the hurricane's eye is approximate as a free vortex, determine the wind sp..
The telescope at a small observatory has objective and eyepiece focal lengths of 16.0 m and 12 cm, respectively. determine angular magnification of the telescope
Determine the possible values of the total spin and total angular momentum quantum numbers, S and J, for a helium atom in the 1s3p conguration
A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon is holding a rock. Find the speed of the wagon after the rock is thrown (a) directly forward in one case and (b) directly backward in another
A 1055-kg van, stopped at a traffic light, is hit directly in the rear by a 670-kg car traveling with a velocity of +2.35 m/s. What is the final velocity of each vehicle
An alpha particle (helium nucleus, charge +2e) starts fromrest and travels a distance of 3.0 cmunder the influence of a uniform electric field of magnitude10.0 kV/m. What is the final kinetic energy of the alpha particle
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