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If a +4C charge is given a kinetic energy of 10J and it moves 2cm against the field, what is the strength of the field?
A thin convex lens has focal length 20 cm. An object is placed 40 cm from the lens. What is the magnification of the image
A pesky 1.7-mg mosquito is annoying you as you attempt to study physics in your room, What is the maximum uncertainty in the horizontal position of the mosquito
A person walks first at a constant speed of 5.10 m/s along a straight line from point to point and then back along the line from to at a constant speed of 2.95 m/s. (a) What is her average speed over the entire trip? (b) What is her average veloci..
Susan, driving north at 52 mph , and Shawn, driving east at 52 mph , are approaching an intersection. What is Shawn's speed relative to Susan's reference frame
A power station with an efficiency of 0.5 generates 10^8W of electric power and dissipates 1.00 x10^8 W of thermal energy to the cooling water that flows through it.
A 1,859-kilogram roller coaster car is approaching a valley. At its bottom, the valley can be described by a circle with radius 7 m. Find the speed required at point A, such that the normal force acting on the car in point B is 219% more than the w..
question if the original electric field is 2.9010-4nc and the distance is reduced to one-half the original distance
If a measurement of an electron's energy takes 9.6 ns (9.6 × 10?9 s), what is the minimum possible uncertainty in the energy
An isotope of krypton has a half-life of 3 minutes. A sample of this isotope produces 1000 counts per minute in a Geiger counter. Determine the number of counts per minute produced after 15 minutes.
question 1a. outline the quantum confinement effects in quantum wellsb. outline the density of states for 3d 2d 1d and
A blow-dryer and a vacuum cleaner each operate with a voltage of 120 V. The current rating of the blow-dryer is 9 A, and that of the vacuum cleaner is 5.5 A. Determine the power consumed by the vacuum cleaner.
a glass window pane has an area of 3.00 m and a thickness of 0.600 cm. if the temperature difference between its faces
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