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Q1. Gold, which has a density of 19.3 g/cm3, is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber.
a) If a sample of gold, with a mass of 27.63 g. is pressed into a leaf of 1.000 micrometers thickness, what is the area of the leaf?
b) In its place of a leaf, the gold is drawn into a cylindrical fiber of radius 2.5 micrometers, what is the length of the fiber?
Q2. Compute the electrical attraction that a proton in the nucleus exerts on an orbiting electron if the two particles are 1.41×10-10 apart.
Explain how Gestalt psychologists understand perceptual organization, including the discussion of form perception, depth perception, and perceptual constancy.
W hat is the ratio of an amplitude of the damped oscillations
Find out vertical and horizontal components
A 0.255 kg puck, initially at rest on a frictionless horizontal surface, is struck by a 0.200 kg puck that is initially moving along the x axis with a velocity of 2.06 m/s. After the collision, the 0.200 kg puck has the speed of 1.02 m/s at an ang..
A 57 kg student sits on a chair which is solely supported by a solid 1/2 meter long steel rod 1cm in diameter. To the nearest micron (millionth of a meter) what is the change in length of the rod produced by the student's weight.
A 130 block on a frictionless table is firmly attached to one end of a spring with = 40. The other end of the spring is anchored to the wall. A 21 ball is thrown horizontally toward the block with a speed of 6.6.
A long string is wrapped around a 6.60 diameter cylinder, initially at rest, that is free to rotate on an axle. The string is then pulled with a constant acceleration of 1.70 until 1.30 of string has been unwound. If the string unwinds without slippi..
At what angle is the curve banked? The acceleration due to gravity is 9.8 m/s2.
An elevator releases 11200J of gravitational potential energy as descending 4m between floors. How much does elevator weigh.
A 0.50-kg object is attached to an ideal massless spring of spring constant 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.7 m/s at the equilibrium position.
Determine the eccentricity of the orbit of Uranus
The pilot of an aircraft wishes to fly due west in a 37.70 km/h wind blowing toward the south. The speed of the aircraft in the absence of the wind is 191 km/h.
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