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Determine what is the tension in an elevator cable if the 1001 kilogram elevator is descending with an acceleration of 1.6 m/s^2.
you place a small lightbulb 70 cm from a concave mirror and find a real image 17 cm from the mirror. where should you
Starting with the equation E=mc^2, determine the ratio of MeV per AMU. For initial values, use 1 AMU = 1.66x10^-27 kg and c = 3.00x10^8 m/sec.
A small statue has a height of 3.5 cm and is placed in front of a concave mirror. The image of the statue is inverted, 1.5 cm tall, and located 12 cm away from the mirror. Find the focal length of the mirror.
The neutrons in a neutron star (Chapter 44 in the textbook) can be treated as a Fermi gas by neutrons in place of the electrons in our model of an electron gas.
the headlights of on a small car are separated by 115 cm. at what maximum distance could you resolve them if the
light with a frequency of 2 x 1015 hz shines on a copper surface 4.70 ev. what is the maximum kinetic energy of the
Consider two stars, A and B, whose parallaxes are, respectively: 0.01 arcsec and 0.005 arcsec. What are the distances to each star in parsecs
An object of mass m moves in one dimension under the influence of the following conservative potential function: U(x) = x2 + 2x - 1. Determine the acceleration of the object
A 31000- kg railroad car with an open top rolls along a straight track with a speed of 4.91 km/h. It passes under a water fall that pours water straight into the car at a rate of 600 kg/s How much force is necessary to keep the car traveling at const..
A single constant force F = (3 i + 4j) N acts on a 3.85 kgparticle. What is the change in the potential energy
a horizontal water main with a cross-sectional area of 186 cm2 necks down to a pipe of area 57.8 cm2. meters mounted
How much energy must be added to a bowl of 125 popcorn kernels in order for them to reach a popping temperature of 175celsious? assume that their initial temperature is 21 celsious, that specific heat capacity of popcorn is 1650 j/kgcelsious, and ..
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