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The overall magnification of anstronomical telescope is desired to be 24X. if an objectiveof 75cm focal lenght is used, what must be the focal length of the eyepiece?
At the start of a race, a four-man bobsled team pushes their sled as fast as they can along a 50 m flat starting stretch. What is the speed of the sled right before the team jumps on the sled
In a student experiment, a constant-volume gas thermometer is calibrated in dry ice (?78.5°C) and in boiling pentane (36.1°C). What pressure would be found at the boiling point of water
An automobile battery has an emf of 12.60 V and an internal resistance of 0.076 0 ?. What is the potential difference across the headlight bulbs when they are the only load on the battery
In exercising, a weight lifter loses 0.145 kg of water through evaporation, the heat required to evaporate the water coming from the weight lifter's body. The work done in lifting weights is 1.21 x 105 J. (a) Assuming that the latent heat of vaporiza..
A 4-g bullet is fired into a 1.4-kg block that is resting on a table. After impact, What was the initial speed of the bullet?
In the isothermal compression of an ideal gas, the volume occupied by the gas is decreasing, but the temperature of the gas remains constant. In order for this to happen, A. heat must enter the gas. B. heat must exit the gas. C. no heat exchange shou..
I put a material on top of it, and it only took one rotation--or crank--to knock the material off from the machine and onto the ground.
A reflecting telescope is built with a 10-cm-diameter mirror having a 1.00 m focal length. What is the magnification of the telescope
A wooden shelter has walls constructed of wooden planks 1.00 cm thick. find the rate of energy loss through a wall that has dimensions 1.85 m by 2.10 m
A cylinder which is in a horizontal position contains an unknown noble gas at 4.63 × 104 Pa and is sealed with a massless piston. calculate the change in internal energy of the system
The patellar tendon attaches to the tibia at the tibial tuberosity. The tibial tuberosity is 8 cm from the center of the knee joint. how large is the force in the patellar tendon
A proton is passing through the uniform, 0.500-T magnetic field is directed along the x-axis. At t = 0 the proton has velocity components vx = 1.50 × 105 m/s, vy = 0, and vz = 2.00 × 105 m/s. Find the radius of the resulting helical path
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