I started a thread called simple questions part 2 (https://www.physicsforums.com/showthread.php?s=&threadid=10036), and there is a section of questions that i still having trouble executing. First off with questions 32 and 33 I know which formula to use but i don't know how to calculate it on...
In 1783 the Montgolfier brothers of France launched what is possibly the first balloon flight carrying passengers - - a duck, a rooster and a sheep. Their balloon, about 35 feet in diameter and constructed of cloth lined with paper, was launched by filling it with smoke. The flight landed...
On a hot day, it is 90 degrees in your friend Eustace's kitchen. Eustace decides to close all the doors and windows so no further heat transfer occurs between the outdoors and his apartment, and then he opens his refrigerator. Will the refrigerator cool down the kitchen? Why or why not? Describe...
for 27(C) is the acceleration still the same, and how so?
Simple Questions Pt2
(A) The Wright brothers' first successful plane flew at a speed of about 60 km/h. If the Wright brothers were foolhardy enought to fly their plane east into a 80 km/h northerly wind, what would be the resultant...
Pt2 other choices
1 - - (B) Sound waves can travel in a vacuum, but light waves cannot. (C) Sound waves are longitudinal, while light waves are transverse. (D) Light waves are produced by accelerating electric charges, while sound waves are produced by the mechanical vibration of matter.
2 -...
Pt1 followup: other choices
Pt1 other choices:
2. (B) It makes rocks vibrate at right angles to the waves. (C) Because solids generally have higher densities than gases, the energy is transmitted more quickly through the Earth than it would be if the sound waves traveled through air.
5...
Simple Questions Pt1. These Questions stem from an old exam that i have yet to turn in. It basically easy in some parts, but some questions I am not tos confident in because of my bad track record with confidence in my physics work. By the way the reason why I'm posting the great amount of...
Multiple Choices Pt2
In what ways are sound and light waves different? (Choose as many as apply) A.The speed of light waves is greater than the speed of sound waves and E. Sound waves experience the Doppler effect, while light waves do not.
Which of the following statements is true of...