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A 75 kilogram man is standing on a scale in an elevator. Determine what is the reading in Newton if the elevator is at rest? Moving up at a constant velocity of 2.0 m/s and accelerating up at 2.0 m/s.
A solid has a volume of 8cm3. When weighed on a spring scale calibrated in grams, the scale indicates 20g. What does the scale indicate if the object is weighed as immersed in a liquid of density 2g/cm3.
A 29? and a 41? resistor are in series, Find the current when this series combination is connected across a 12V battery
a charge of -2.355 microc is located at 3.055 m 4.501 m and a charge of 1.800 microc is located at -2.372 m 0.a find
a person can be killed if a current as small as 50 ma passes near the heart. an electrician is working on a humid day
An electron is held up against the force of gravity by theattraction of a fixed proton some distance above it. How far above the electron is the proton?
The unpolarized light of intensity I(not) is passed through two polarizers with axes oriented at 30degrees from each other. What intensity of light emerges
An object has a weight of 0.882 Newton. It is suspended from a scale, which reads 0.735 Newton when the piece is submerged in water. Determine the volume and density of the piece of metal
a block of mass m slides down a frictionless plane inclined at an angle with the horizontal. the gravitational force is
A golf ball of mass 4.50 x 10-2kg is struck by a club. Contact lasts 2.39 x 10-4 s, and theball leaves the tee with a horizontal velocity of 40.0 m/s. Compute the average force the club exerts on the ball by finding its average acceleration.
A helicopter lifts a 81 kgastronaut 20 m vertically from theocean by means of a cable. The acceleration of the astronaut isg/10. What is the speed of the astronaut just before she reaches thehelicopter
At an absolute pressure of 101.3 kPa and ten mperature of 20 degC the dynamic viscosity of a certain diatomic gas is 2*10^-5 Pa.sec, calculate its approximate relative molecular mass
The drawing shows a type of flow meter that can be used to measure the speed of blood in situations when a blood vessel is sufficiently exposed (e.g., during surgery). Blood is conductive enough that it can be treated as a moving conductor.
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