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Two capacitor plates are equally and oppositely charged. They are separated by 1.4cm. An electron is released from rest at the surface of the negative plate and, at the same time, a proton is released from rest at the surface of the positive plate.
A siren has a frequency of 875 Hz when it and an observer are both at rest. The observer then starts to move and finds that the frequency he hears is 1251 Hz. What is the speed of the observer
A particle is uncharged and is thrown vertically upward from ground level with a speed of 25.0m/s. As a result, it attains amaximum height h. The particle is then given a positivecharge +q and reaches the same maximum height h when thrownverticall..
What isthe total random kinetic energy of all the molecules in one mole of helium at a temperature of360 K? With what speed would a mole of helium have to move so that the kinetic energy ofthe mass as a whole would be equal to the total random kineti..
100 g of ice at 0 degrees c and 100 g of steam at 100 degrees c interact thermally in a well-insulated container. what
question a 1200 kg ore cart is rolling at 10.8 ms across a flat surface. a crane dumps 493 kg of ore vertically into
A soccer ball is kicked with a speed of 9.50 m/s at an angleof 25.0º above the horizontal. how long was it in the air
A diverging lens with a focal length of -48.0cm forms a virtual image 8.50mm tall, 16.5cm to the right of the lens. Determine the position of the object
A 30.0 g ball rolls around a 50.0 cm-diameter L-shaped track, shown in the figure,at 50.0 rpm. What is the magnitude of the net forcethat the track exerts on the ball
Through 0.21 s, a wheel rotates through an angle of 2.12 rad as a point on the periphery of the wheel moves with a constant speed of 2.62 m/s. What is the radius of the wheel?
A 5g lead bullet travelling at 370-m/s is stopped by a large tree. If half the kinetic energy of the bullet is transformed into internal energy and remains with the bullet whilst the other half is transmitted to the tree, what is the increase in t..
A single layer of dielectric lens coating is to be deposited on a lens made of a material with refractive index of 1.78. Determine the thickness and the refractive index of the layer
A laser emits a monochromatic beam of wavelength λ, which is reflected normally from a plane mirror, receding at a speed v. What is the beat frequency between the incident and reflected light?
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