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Two identical point charges of q = +0.75 10-8 C are separated by a distance of 1.05 m. How much work is required to move them closer together so that they are only 0.70 m apart?
a hospital patient has been given 131i half life 8.04 days which decays at 4.5 times the acceptable level for exposure
A 30000 kg truck traveling at 10 m/sec collides with a 1700 kg car traveling at 25 m/sec in the opposite direction. If they stick together after the collision, how fast and in what direction will they be moving?
A hawk flies in a straight line, a diostance of 15 km in 6 hr. its speed is
Consider a thunderstorm that extends 10km from the ground to the top of the storm. If the vertical velocity in the center of the storm is w=10ms-1. Where is the flow divergent and where is it convergent
A skateboarder, with an initial speed of 5.0 m/s, rolls virtually friction free down a straight incline of length 19 m in 3.3 s. What is the angle of the incline
The image of an object through a diverging lens is 5.00 cm in front of the lens. If the magnification is 0.250,determine object distance and and focal length
Find the average velocity in the time interval t = 1.50 s to t = 4.00 s and determine the instantaneous velocity at t = 2.00 s by measuring the slope of the tangent line shown in the graph.
A small piece of dust (mass=1.8 \(\mu\)\ g) travels horizontally through an electric air cleaner in which the electric field is 524 N/C. What is the charge on the dust particle
Where would a -8.0nC charge need to be located in order that the electric field at the origin be zero
Two lenses are mounted in a tube such that the distance between them can be varied. What is the magnification achieved
A 62kg hiker starts at an elevation of 1500m and climbs to the top of a 3500m peak, What is the minimum work required of the hiker
Calculate the energy in of a photon of radiation. A projectile is fired straight upward at 141 m/s. How fast is it moving at the the top of its trajectory? assume it is launched upward at 45 degrees about the horizontal plane. How fast is it moving..
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