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1. A cable stretches by an amount d when it supports a crate of mass M. The cable is then cut into three equal pieces. If the same crate is supported by any one of these pieces, by how much will the cable stretch?
2. A cable stretches by an amount d when it supports a crate of mass M. The cable is replaced by another cable of the same material having the same length and twice the diameter. If the same crate is supported by the thicker cable, by how much will the cable stretch?
The radius of curvature of the curved side of a Plano-convex lens made of glass (n = 1.64) is 25 centimeter. Evaluate what is the focal length of the lens
A laser beam passes during a slit of width1.0 cm and is pointed at the Moon, which is approximately380,000 {\rm km} from the Earth. Suppose the laser emits waves of wavelength 630 {\rm nm} (the red light of a He-Ne laser).
Calculate the kinetic energy that the earth has because of (a) its rotation about its own axis and (b) its motion around the sun. Assume that theearth is a uniform sphere and that its path around the sun is circular.
A and B, are located at the similar distance from the observation screens. Light with the similar wavelength λ is used for each. The separation between adjacent principal maxima for grating A is 2.7cm, and for grating B it is 3.2 cm.
what is the net force exerted by these two charges on a third charge 50.5 placed between and at -1.230 ? your answer
Cosmonaut Andrei, your co-worker at the International SpaceStation, tosses a banana at you at a speed of 17 m/s. At exactly the same instant, How fast did you toss the ice cream
Suppose a uniform magnetic field goes during a 40-turn circular coil of wire along the axis of the coil. The radius of the coil is 3.00 cm, and the resistance of the wire is 3.00Ω. If the magnetic field B changes from + 0.20 T to - 0.20 T in 0.40 sec..
you are given a slide with two slits cut into it and asked how far apart the slits are. you shine white light on the
What is the total force on the bottom of a swimming pool 13.0m by 6.9m whose uniform depth is 2.1m ? What is the absolute pressure on the bottom of a swimming pool? What will be the pressure against the side of the pool near the bottom?
What is phase change as the light is reflected from the top
A 1.3-µF capacitor is connected to a 4.7-V battery. What is the magnitude of the charge on each plate?
The amplitude of a lightly damped oscillator decreases by 2.8% during each cycle. What percentage of the mechanical energy of the oscillator is lost in each cycle?
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