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A 650kg elevator starts from rest. It moves upward for 3.0s by constant acceleration until it reaches its cruising speed of 1.75m/s. a) what is the average power of elevator motor through this time interval?
A laser beam is directed from air (n = 1.0) into an unknown liquid. The angle of incidence is measured to be 60° and the angle of refraction is measured to be 45°. What is the index of refraction of the unknown liquid?
question1take two indistinguishable metallic tumblers a and b. insulate one tumbler say a by wrapping chart paper
A 2.0 kilogram wood block is launched up wooden ramp that is inclined at 35o angle. Block's initial speed is 10 m/s, Find what vertical height does block reach above its starting point
You slide a box of books at constant speed up a 30 degree ramp, applying a force of 160 N directed up the slope. What is the mass of the box
A transformer is to be used to provide power for a computer disk drive that needs 5.8 V (rms) instead of the 120 V (rms) from the wall outlet. Find the number of turns in the secondary
For one approach to this problem, consult Interactive LearningWare 24.1. For each of the three sheets of polarizing material shown in the drawing, the orientation of the transmission axis is labeled relative to the vertical. The incident beam of l..
A typical red blood cell subtends an angle of only 1.8×10^-5 rad when viewed at a person's near-point distance of 25 cm. find the magnitude of the angle subtended by the red blood cell
A heavy rainstorm dumps 1.0cm of rain on a city 3km wide and 6 long in a 2- h period. How many gallons of water was this
Two blocks with masses M1= 4.9 and M2 = 3.5 are connected with a massless string over two massless and frictionless pulleys. What is the acceleration of mass M2
Blood pressure is normally taken on the upper arm at the level of the heart, what would be the magnitude of the difference between this measurement of blood pressure and a normal blood pressure measurement
A home run is hit in such a way that the baseball just clears a wall 10 m high, located 126 m from home plate. Find the speed of the ball when it reaches the wall
A constant force is applied to an object, causing the object to accelerate at 6 m/s^2?, What will the acceleration be if the force is halved
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