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A diverging lens has a focal length of 53 cm.If an object is 40 cm from the lens, what is the image distance? What is the magnitude of the magnification for this lens?
While running, a person dissipates about 0.60 J of mechanical energy per step per kilogram of body mass. how fast is the person running
A lead bullet initially at 26.4oC melts just upon striking a target. calculate the speed of the bullet upon impact
How much energy is stored in a 11.2mH inductor carrying a 1.45A current? Solve for mJ
The bar is held by a cord that makes a 90? angle with respect to bar and 50 ? with respect to wall. Illustrate what is the magnitude of the horizontal force Hx on the pivot? The acceleration of gravity is 9.8 m/s2.
A long jumper leaves the ground at an angle of 20.0o to the horizontal and at a speed of 11.0 m/s. How far does he jump
A runner in a race takes 2.7 seconds to go from the 40 meter mark to the 70 meter mark. What is the runner's speed (in m/s)
Point charges of 6.2*10^-8 C and -6.4*10^-8 C are placed 72 cm apart. A third point charge of 6.3*10^-8 C is placed half way between the first two point charges
A wooder raft has mass of 76kg. When empty it floats in water (density 1000 kg/m^3) with 40% of its volume submerged
If the rms speed of the molecules of a quantity of helium at temperature 142 K is the same as the rms speed of neon atoms at a second temperature
The electron beam inside a television picture tube is 0.4 mm in diameter and carries a current of 55 µA. What is the power delivered to the screen by the electron beam
In an organ pipe open at one end and closed at the other, the fundamental frequency emitted is 240 Hz. find the next overtone frequency
A typical color television draws about 2.9 A when connected to a 150 V source. What is the efiective resistance of the T.V. set
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