Physics, 30.11.2019 07:31 mydoggy152
Aphysics student looks into a microscope and observes that small particles suspended in water are moving about in an irregular motion. which of the following statements is the best explanation for this observation?
a. water molecules strike the particles giving them the same average kinetic energy as the water
b. the particles are carried by convection currents in the water
c. the small particles may be considered a fluid; and thus, move about randomly
d. the actual motion is regular, but the speeds of particles are too large to observe the regular motion
e. the particles are moving to be uniformly distributed throughout the volume of the water
Answers: 2
Physics, 22.06.2019 03:30
The focal length of a relaxed human eye is approximately 1.7 cm. when we focus our eyes on a close up object, we can change the refractive power of the eye by about 16 diopters. (a) does the refractive power of our eyes increase or decrease by 16 diopters when we focus closely? explain. (b) calculate the focal length of the eye when we focus closely.
Answers: 3
Physics, 22.06.2019 05:00
Aperson walking 1 mile everyday for exercise, leaving her front porch at 9: 00 am and returning to her front porch at 9: 25 am. what is the total displacement of her daily walk? a) 1 mileb) 0c) 25 minutes d) none of the above
Answers: 1
Physics, 22.06.2019 06:30
At very high pressures, gases become and will eventually a) more dense; become hotter b) more dense; change to a liquid or solid c) less dense; combust d) less dense; turn into a liquid
Answers: 1
Physics, 22.06.2019 09:00
Immediately upon reaching its lowest point, a falling pendulum bob has its greatest amount of energy, which is the initial amount of potential energy. a. heat; less than b. heat; more than c. kinetic; less than d. kinetic; more than
Answers: 3
Aphysics student looks into a microscope and observes that small particles suspended in water are mo...
History, 20.08.2019 14:00
Mathematics, 20.08.2019 14:00
Health, 20.08.2019 14:00
Health, 20.08.2019 14:00
Geography, 20.08.2019 14:00
Mathematics, 20.08.2019 14:00
Social Studies, 20.08.2019 14:00
Mathematics, 20.08.2019 14:00
Mathematics, 20.08.2019 14:00
Mathematics, 20.08.2019 14:00
French, 20.08.2019 14:00
Physics, 20.08.2019 14:00
World Languages, 20.08.2019 14:00
Mathematics, 20.08.2019 14:00