I have a set of revision questions I'm having trouble with. If possible, when answering them, could you please provide a basic explanation/working out on how you worked the questions out? Thanks.
I have attached some physics questions. Yes, I am aware that these questions are answered on course hero in another post. However, many of the answers I have come up with are quite different. I would
Suppose you use the tip of one finger to support a 1.0 kg object. If your finger has a diameter of 2.0 cm, what is the stress on your finger?
The Article: http://www.sciencemag.org/content/162/3859/1243.full Read the supplemental paper, Tragedy of the Commons (Links to an external site.) , by Garrett Hardin. This older article written durin
A merry-go-round is spinning and has a period of 7.25 s. A boy jumps off in a direction parallel to the radius and, by so doing, changes the moment of inertia of the merry-go-round from 575 kg m 2 to
Two football players are moving toward each other in a straight line. Number 56 has a mass of 109 kg and a velocity of 2 m/s (in the positive x -direction). Number 22 has a mass of 121 kg and a veloci
A flywheel is a solid, rotating disk that is sometimes used to store energy. The moment of inertia for a solid disk is, where M is the mass and R is the radius. For a flywheel that weighs 10 kg and ha
A 5 kg ball moving in the + x direction at 3 m/s collides head on with a 1 kg ball initially at rest. The collision is inelastic. After the collision, the 1 kg ball is traveling at 4 m/s in the + x di
Neglecting air resistance, approximately which is the speed of an object that is dropped from rest, after it has fallen 4 m?
1. Which of the following is not a main idea in quantum theory? Energy is not continuous, but comes in small, discrete units or packets. Elementary particles behave both like particles and like waves.
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1. Can you show me step by step how to solve this problem?:
- 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?
2. I do not understand this Ideal Gas Law and Kinetic Theory question. Can you help me set it up?
- A spherical balloon is made from a material whose mass is 3.00-kg. The thickness of the material is negligible compared to the 1.5-m radius of the balloon. The balloon is filled with helium (He) at a temperature of 305-degrees K and just floats in the air, neither rising nor falling. The density of the surrounding air is 1.19-kg/m^3. Find the absolute pressure of the helium gas