
I have a question regarding a revolution based work physics problem. I don't know if I should take the 3 seconds into account when calculating distance (x). The problem says: A 15 kg child is riding on a merrygoround 2.2 m from its center and makes one revolution every 3 s. Friciton is...

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NEED HELP: Two identical metal spheres A and B are connected by a metal rod. Both are initially neutral. 1.0x10^12 electrons are added to sphere A. a) The connecting rod is removed. Afterward, what are the charge of A and the charge of B? b) The experiment is repeated with a plastic rod...

A bicycle wheel of radius 0.30 m is spinning at a rate of 60 revolutions per minute. What is the centripetal acceleration of a point that is 0.14 m from the outer edge of the wheel?

Choose a model organism that is an animal: Drosophila, C. elegans, zebrafish or mouse. You may also use Aplysia. Do some research on why we use model organisms and why these particular creatures are good model organisms. Try searching <X as a model organism>. Get on the web, or go...

why is a physical model different from the one needed for conductors needed to determine the conditions of quantum confinement for semiconductors

Physics 184 quesiton

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A 7.93 kg box is pulled along a horizontal surface by a force Fp of 84.0 N applied at a 47.0 angle. If the coefficient of kinetic friction is 0.35, what is the acceleration of the box?

1. A pressure drop of 50 kPa due to fluid friction through 1 in wrought iron pipe ismeasured. The fluid flows at a rate of 0.04 kg/s. The fluid viscosity is 2 cP and itsdensity is 1000 kg/m3. Find the length of the pipe? 2. Liquid is flowing at a rate of 20 L/min in a 1.5 in diameter...
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Sample Questions
 The Earth’s rate of rotation is constantly decreasing, causing the day to increase in duration. In the year 2000 the Earth takes about 0.548 s longer to complete 365 revolutions than it did in the year 1900.
 (a) What is the average angular acceleration of the Earth?
 (b) If this average acceleration remains constant, in what year will the Earths rotation come to rest?
1. Can you show me step by step how to solve this problem?:
 A spherical balloon is made from a material whose mass is 3.00kg. The thickness of the material is negligible compared to the 1.5m radius of the balloon. The balloon is filled with helium (He) at a temperature of 305degrees K and just floats in the air, neither rising nor falling. The density of the surrounding air is 1.19kg/m^3. Find the absolute pressure of the helium gas
2. I do not understand this Ideal Gas Law and Kinetic Theory question. Can you help me set it up?