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The accepted value of the specific gravity of a rectangular metalblock is 2.70. A student determines the dimensions to be: length =1.5 cm; width = 0.75 cm; thickness = 0.40 cm. Its mass is 1.25 g. What is the relative error of the determination?
You are designing a hydraulic lift for an automobile garage. It will consist of two oil-filled cylindrical pipes of different diameters. What should be the diameter of the pipe under the platform
Consider an electron in the ground state of the hydrogen atom, separated from the proton by a distance of 0.0529 nm. Viewing the electron as a satellite orbiting the proton in the electrostatic potential, calculate the speed of the electron in its ..
The Earth's gravity pulls on the Moon, causing it to orbit. However, by Newton’s third law, it is known that the Moon exerts a force back on the Earth. Therefore, the Earth should move in response to the Moon. Thus a more accurate statement is, "T..
A lump of mass 1.0 kg falls on it and sticks to the surface at a distance 0.7 m from the center. a) calculate the new angular speed of the disc b) if the lump gets unstuck and rolls of the disc.
A proton is moving parallel to a uniform electric field. What is the magnitude of the electric field
a wheel 2cm wide with a 3.5cm radius is being spun at a constant velocity "w" by a static force "F", how much work is being 'lost' through the bar
A solid cylinder is mounted above the ground with its axis of rotation oriented horizontally. How much of the rope unwinds in this time interval
A cube of ice is taken from the freezer at -8.50C and placed in a 95-g aluminum calorimeter filled with 310 g of water at room temperature of 200C
hiker starts at his camp and moves the following distances while exploring his surroundings: 75.0 m north, Find his resultant displacement from camp
Two parallel plates carry uniform charge densities –0.65 and +0.65. Find the magnitude of the electric field between the plates. Find the magnitude of the acceleration of an electron between these plates.
A highway is to be built between tow towns, one of which lies 30.7 km south and 72.2 km west of the othe, What is the shortest lenght of highway that can be bult between the tow towns
An AC voltage of the form ?V = (85 V) sin (310 t) is applied to a series RLC circuit. If R = 46 ?, C = 29 µF, and L = 0.27 H, find the impedance of the circuit
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