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Equal masses of ice at an unknown temperature are added to water.Temperature of water is 20 degrees C. Ice and water are mixedtogether and reach thermal equilibrium at -10 degrees C. What is the initial temperature of ice?
7.4 mol of helium are in a 16 L cylinder. The pressure gauge on the cylinder reads 68 psi. calculate the average kinetic energy of a helium atom
Two trains on separate tracks move toward each other. Train 1 has a speed of 127 km/h; train 2 a speed of 80.0 km/h. What is the frequency heard by the engineer on train 1
The place you get your hair cut has two nearly parallel mirrors 7.0 m apart. As you sit in the chair, your head is 1.0 m from the nearer mirror. Looking toward this mirror, you first see your face and then, farther away, the back of your head.
A baseball is thrown from the roof of 23.5 m-tall building with an initial velocity of magnitude 10.6 m/s and directed at an angle of 52.5 degrees above the horizontal. What is the speed of the ball just before it strikes the ground
A solid, uniform disk of radius 0.250 m and mass 61.6 kg rolls down a ramp of length 4.60 m that makes an angle of 16° with the horizontal. Find the angular speed of the disk at the bottom of the ramp
question1a dolphin located in sea water at a temperature of 26c emits a sound directed toward the bottom of the ocean
The potential at location A is 376V. A positively charged particle is released there from rest and arrives at location B with a speed vB.
Before landing astronauts on the moon, the Apollo 11 space vehicle was put into orbit around the moon. Calculate the ratio of densities (moon to earth)
A small plastic sphere with a charge of -6.0nC is near another small plastic sphere with a charge of -15nC. what is the distance between the spheres
The distance to a star is approximately 7.60 1018 m. If this star were to burn out today, in how many years would we see it disappear? How long does it take for sunlight to reach Jupiter?
An air-filled capacitor consists of two parallel plates, each with an area of 7.60 cm2, separated by a distance of 1.40 mm. If a 23.0 V potential difference is applied to these plates, calculate the electric field between the plates
A box weighing 77.0 N rests on a table. A rope tied to the box runs vertically upward over a pulley and a weight is hung from the other end. Determine the force that the table exert on the box if the weight hanging on the other side of the pulley ..
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