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A converging lens has focal length 10 cm. Which of the following is true?
a. When the object is about 9.8 cm from the lens then an enlarged virtual image is formed on the same side as the object.
b. When an object is placed at a distance of 20 cm from the lens, then an upright image is formed 20 cm from the lens on the opposite side.
c. When an object is placed at 10 cm from the lens, an inverted image of the same size is formed on the opposite side of the lens.
d. When an object is placed 30 cm from the lens, a magnified inverted image is formed on the opposite side of the lense. An object placed at 12 cm from the lens will form an inverted image of smaller size.
Two ice skaters, with masses of 40.0kg and 85.0kg , are at the center of a 60.0m -diameter circular rink. how long does the lighter skater take to reach the edge
A block of unknown mass, m, is brought into the configuration shown. It was measured that upon release the block shot upward a maximum distance of 2m. Calculate the mass of this block? The upper spring has a natural length of 1m, and the lower spr..
Why is skiing into a wall of deep powder less hazardous to your health than skiing into a wall of bricks? Assume in both cases that you have the same initial speed and come to a complete stop.
An object on a horizontal spring oscillates by a period of 1 s. If the object is suspended from the spring vertically, by how much is the spring stretched from its natural length when the object is in equilibrium?
Find the minimum volume of concrete (y = 23.6 kN/m3) needed to keep the gate (1 m wide) in a closed position; l = 2 m. Note the hinge at the bottom of the gate. Explain briefly.
An electron of energy 400 eV moves at right angles to a uniform magnetic field along an arc of radius 2.0cm. What is the energy of the second electron
How much work does a steam crane need to do in order to lift a 108,500 kg locomotive back onto the track if the locomotive has been derailed into a ditch 3.25 meters below the level of the tracks
When a certain air-?lled parallel-plate capacitor is connected across a battery, it acqquires a charge (on each plate) of magnitude 131 µC. What is the dielectric constant of the slab
Aspherical volume charge distribution rv = ro [1 - (r2/b2)] existsin the region 0
A good-quality measuring tape can be off by 0.45 cm over a distance of 23m. What is its percent uncertainty
Two identical long wires of radius a = 2.90 millimeter are parallel and carry identical currents of i = 14.0 A in opposite directions. Find the inductance per unit length of the wires
A dynamite blast at a quarry launches a rock straight upward, and 2.3 s later it is rising at a rate of 18 m/s, calculate blast speed at launch
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