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Ethyl alcohol flows through a horizontal tube of diameter 3.00 cm that is joined to a second horizontal tube of diameter 1.62 cm. The pressure difference between the tubes is 7.25 kPa. What is the speed of flow in the first tube?
Tritium has a half-life of 12.3 y and can also be used to date organic matter. If the activity of tritium is determined to be 3% of the expected activity, what is the age of the sample
what is the electric force between the proton and electron inside of a hydrogen atom? What must the speed of the electron be
Two spheres are cut from a certain uniform rock. One has radius 4.30cm. The mass of the other is six times greater. Find its radius.
Two snowballs are moving directly toward each other along a vertical axis. Just before the snowballs collide, Draw a before and after picture of the collision
A converging lens with a focal length of 12.4cm forms a virtual image 8.50mm tall, 17.6cm to the right of the lens. Determine the position of the object
A spring oscillator is designed with a mass of 0.113 kg. It operates while immersed in a damping fluid, determine the required damping constant for the system
A gas system has an initial volume of 5.44L with the number of moles unknown. When the volume changes to 3980mL, What was the initial number of moles
An explosion breaks an object into two pieces, one of which has 1.48 times the mass of the other. How much kinetic energy did the heavier piece acquire
A hospital nurse walks 25 m to a patient's room at the end of the hall in 0.50 min. She talks with the patient for 4.0 min, What was the nurse's average speed
calculate the speed of sound and uncertainty of the speed of sound for a lab report. The equation for the speed of sound is V=4LS
A military helicopter on a training mission is flying horizontally at a speed of 90.0m/s when it accidentally drops a bomb, How much time is required for the bomb to reach the earth
During a panic stop, a car decelerates at 7.00 m/s^2. What distance does the car travel in this time
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