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When a substance is boiled, what happens to the mass?
1. The mass stays constant as it changes from a liquid to a gas.
2. The mass decreases as it changes from a liquid to a gas.
3. There is no mass once the substance becomes a gas.
4. The mass increases as it changes from a liquid to a gas.
A turntable that spins at a constant 73.0{\rm rpm} takes 3.00{\rm s} to reach this angular speed after it is turned on. Find its angular acceleration
A 5.7 kilogram bucket of water is raised from a well by a rope. The acceleration of gravity is 9.81 m/s2. obtain the force exerted by the rope on the bucket of water
What is an average speed for the new trip
The resistance across your (wet) tongue, from one side to the other near the tip, is 375 ? (assume that your tongue is an ohmic material). What current is flowing through the saliva that coats your tongue
Some bacteria are propelled by motors that spin hair-like flagella.A typical bacterial motor turning at a constant angular velocityhas a radius of 1.9x10-8m, How long does it take the motor to make one revolution
You set up an experiment with two polarizer screens on an optical bench and collect data for the intensity of the light at the detector as you vary the relative angle between the transmission axes of the polarizers. What is intensity of the light s..
A large cruise ship of mass6.70107kg has a speed of10.8m/s at some instant. What is the ship's kinetic energy at this time
the electric field in a particular region of space is found to be uniform with a magnitude of 800 nc and parallel to
While looking through the Mt. Palomer telescope, you discover a large planetary object orbited by a single moon. calculate the density of Planet Hephaestus
An unstable particle at rest breaks up into two fragments of unequal mass. The mass of the lighter fragment is 2.70*10-28 kg and that of the heavier fragment is 1.65*10-27 kg. If the lighter fragment has a speed of 0.893c after the breakup, what is t..
what is the frequency hz of an oscillator with a period of 20 seconds? show how to solve please how much force is
A circular wire loop of radius 8.1 m lies in a plane perpendicularto a uniform magnetic field of magnitude 0.4 T. In 0.1 s the wire is reshaped into a square but remains in the same plane.
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