In what ways do photons resemble familiar particles such as electrons? In what ways do they differ? For example, do they have mass? Electric charge? Can they be accelerated? What mechanical properties do they have?
A stone is released from a balloon that is descending at a constant speed of 10 m/s. Neglecting air resistance, after 20 s the speed of the stone is:
Question 9 and 11!
A woman is reported to have fallen 174 ft from a building, landing on a metal ventilator box, which she crushed to a depth of 25 in. She suffered only minor injuries.
The entire U.S population holding hands can circle the equator how many times ?
4 questions, some with 2 parts, please answer all of them and give thorough explanation of how you solved, steps you've used, and name the formula's you've used as well. Thanks
Hello, 4 questions, some of 2 or more parts. Please answer each with thorough explanation of the steps that you've used, name the fomulas that you use, and sketch diagrams for all, specially number 1 and 3 for visualisation. Thanks
how will you describe the motion of a body thrown vertically upward? how does it differ from motion of a freely falling body
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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