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A steel wire of length 1.98m with circular cross section must stretch no more than 0.220cm when a tensile (stretching) force of 360N is applied to each end of the wire. What minimum diameter d is required for the wire?
The light shining on a diffraction grating has a wavelength of 490 nm (in vacuum). How many lines per centimeter does the grating have
A 1.9kg block slides along a frictionless surface at 1.7m/s . A second block, sliding at a faster 4.9m/s , What was the mass of the second block
A small, 1.90-mm-diameter circular loop with R = 1.10×10?2? is at the center of a large 100-mm-diameter circular loop. What is the induced current in the inner loop
Spaceship A and spaceship B are racing toward an airless moon at speeds of 0.15c and 0.85c, respectively. What is the speed of the pulse received from spaceship A
A 1300- {rm N} crate slides 15- {rm m} down a ramp that makes an angle of 35^circ with the horizontal. If the crate slides at the constant speed, how much thermal energy is created.
A particular Ferris wheel has a radius of 24 meters, and it makes one complete revolution around its axle (at location A) in 20 seconds. In all of the following questions, consider location A (at the center of the axle) as the location around whic..
A Molecule of DNA is 2.17 um long. The ends of the molecule become strongly ionized: negative on one end, positive on the other. The helical molecule acts like a spring and compresses 0.78% upon becoming charged. Determine the effective spring con..
an emersion heater is used to boil water. assuming no heat escapes from the system, how much power must the emersion heater dissipate in order to boil five grams of water into fives grams of steam in ten minutes at standard atmospheric pressure?
A particle known as a pion lives for a short time before breaking apart into other particles. what is the lifetime according to a hypothetical person who is riding along with the pion
A coil of wire is connected to an ideal 12.0-V battery at t = 0. At t = 14.2 ms, the current in the coil is 210 mA. calculate the inductance of the coil
A wire loop of radius 0.1 m has a 2-ohm resistance. A uniform magnetic field perpendicular to the plane of the loop increases from zero to 2 T in 0.01 s
Two identical diverging lenses are separated by 18 cm. The focal length of each lens is -8.0 cm. Determine the final image distance relative to the lens
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