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When a converging lens is utilized in a camera (as in the top figure), the film should be at a distance of 0.210 m from the lens to record an image of an object that is 4.00 m from the lens. The same lens and film are utilized in a projector (see the bottom figure), with the screen 3.800 m from the lens. How far from the projector lens must the film be placed?
Calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 7.0 g.Silver has 47 electrons per atom, and its molar mass is 107.87g/mole.
mass-spring system can oscillate with simple harmonic motion because a compressed or stretched spring has which kind of energy.
A major leaguer hits a baseball so that it leaves the bat at a speed of 28.0m/s and at an angle of 34.6? above the horizontal. What is the direction of the baseball's velocity when it returns to the level at which it left the bat
Damping is negligible for a 0.125-kg object hanging from a light, 6.30-N/m spring. Find a lower frequency and a higher frequency
A beam of light in air strikes the surface of a smooth piece of plastic having an index of refraction of 1.55 at an angle with the normal of 20°. The incident light has component E-field amplitudes parallel and perpendicular to the plane of incidence..
A box of bananas weighing 44.0N rests on a horizontal surface. The coefficient of static friction between the box and the surface is 0.500, and the coefficient of kinetic friction is 0.300.
A plane accelerates from rest at a constant rate of 5.00 along a runway that is 1800 long. What is the time needed to take off
After collision, the component of the total momentum parallel to the floor must remain zero, since the net external force acting on the plate has no component parallel to floor.find out the masses of pieces 1 and 2.
A rocket powered sled accelerates from rest with fix acceleration. After t=10sec it has traveled a distance x=400meter. Calculate what is its speed at this point
find the linear momentum and kinetic energy of a truck of mass 1.00 104 kg moving at a speed of 18.0
At t = 0, an automobile travelling north begins to make a turn. It follows one-quarter of the arc of a circle of radius 10.70 m until, at t = 1.60s, it is travelling east. The car does not alter its speed all through the turn.
an oscillating lc circuit has a current amplitude of6.50ma a potential amplitude of 250 mv and a capacitance of 245
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