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A spherical concave lens has a focal length of 20cm, and an object is placed 15cm from the lens. Draw a ray diagram on a scratch paper and give your estimate of the image distance and give image characteristics.
A tuning fork of unknown frequency makes three beats per second with a fork of frequency 373 Hz, What is the frequency of this fork
A space traveler weighs 580 N on earth. What will the traveler weigh on another planet whose radius is three times that of earth and whose mass is twice that of earth?
A uniform plank of length 5.8m and weight 229N rests horizontally on two supports, with 1.10 m of the plank hanging over the right support (see the drawing). To what distance x can a person who weighs 450N walk on the overhanging part of the plank be..
An 88? resistor has a current of 0.70A and is connected in series with a 130? resistor. What is the emf of the battery to which the resistors are connected
A 24-V battery is connected in series with a resistor and an inductor, Find the energy stored in the inductor when the current reaches its maximum value
A loudspeaker of mass 21.0 {rm kg} is suspended a distance of h = 2.40 {rm m} below the ceiling by two cables that make equal angles with the ceiling. Each cable has the length of l = 3.90 {rm m}.
One ball is perfectly inelastic and stays on the wall after collision andsecond ball is elastic and bounces of the wall. Elucidate the momentum change
Determine the normal force exerted by the road on the car, the normal force exerted by the car on the 73-kg driver, and the car speed at which the normal force on driver equals zero.
You and your surfing buddy are waiting to catch a wave a few hundred meters off the beach. The waves are conveniently sinusoidal, What is the frequency of the waves, Find the speed of the waves
The blackbody radiation emitted from a furnace peaks at a wavelength of 3.4 10-6 m(0.0000034 m). What is the temperature inside the furnace
A rectangular coil 21cm by 37cm has 100 turns. This coil produces a maximum emf of 69V when it rotates with an angular speed of 200rad/s in a magnetic field of strength B
what is the speed of the proton in the beam.define the spread in these values.
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