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Gold, which has a density of 19.32 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 by a mass of 3.245 g, is pressed into a leaf of 3.989 m thickness, what is the area of the leaf? (b) If, instead, the gold is drawn out into a cylindrical fiber of radius 2.700 m, what is the length of the fiber?
A glass jar submerged half-way is foating in a bathtub . Suppose that you start putting nickel coins in the jar. What is the maximum number of coins that one can put in the jar
A bicyclist is finishing his repair of a flat tire when a friend rides by with a constant speed of 3.6 m/s. How much time does it take until he catches his friend
A radar has a resolving power of 30 m at a range of 1.0km. What is the minimum width of its antenna if its operating frequencyis 9500 MHz
A golf ball is shot from a tee, elevated 20.0 m above the green, what will be the speed of the golf ball just before it hits the green, 20.0 m below where it started
A ball is shot from the ground into the air. At a height of 10.60 m, the velocity is observed to be v = (8.60 m/s) i + (6.50 m/s) j
An airtight box has a removable lid of area 1.11E-2 m2 and negligible weight. What is the magnitude of the force required to pull the lid off the box
a. consider a monatomic gas of particles each with mass m. what is vrms sqrtv2 the root mean square rms of the x
A skater of mass 81.5 kg initially moves in a straight line at a speed of 4.70 m/s. what is the skater's final velocity
What is the electric field at 9.4 cm from the central axis. What is the overall magnification of microscope.
A weightless ladder 7.0 meter long rests against a frictionless wall at an angle of 65 degree above the horizontal, Find what horizontal force at the bottom of the ladder is required to keep it from slipping
The temperature inside a house is 25°C while the temperature outside is 10°C. Approximately how much energy is radiated per second
a sinusoidal wave with an amplitude of 1.5 cm and a frequency of 100 hz travels at 200 ms in the positive x-direction.
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