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Matilda Osborn
Physics
Which volume will be occupied by a gas containing 6.02 * 1023 atoms at stp?
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Desiree Abbott
Physics
Which group contains only nonmetals
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Knight
Physics
The cycle of day and night is a result of Earth's spinning on its axis, which is Earth's
.
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Johnny Nichols
Physics
Tim made tomato soup from scratch. When he cleaned up, he noticed that the aluminum pan was damaged. Analyze what happened to the pan. A) Tomato juice is high in pH and reacted poorly with the aluminum. B) Ingredients other than the neutral tomato juice damaged the pan. C) Alkaline tomato juice caused the aluminum pan to rust and stain. D) The acidic tomato juice reacted un
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Hadley Andrews
Physics
4. How much force is required to stop a 60 kg person traveling at 30 m/s during a time of a)
5.0 seconds
b) 0.50 seconds
c) 0.05 seconds
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Danika Gibbs
Physics
A potter's wheel-a thick stone disk of radius 0.500 m and mass 110 kg-is freely rotating at 50.0 rev/min. the potter can stop the wheel in 6.00 s by pressing a wet rag against the rim and exerting a radially inward force of 68.0 n. find the effective coefficient of kinetic friction between the wheel and rag.
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Jenna
Physics
Many automobile passengers have suffered neck injuries when struck by cars from behind. How does Newton's law of inertia apply here
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Gianna Anderson
Physics
An electron has a constant acceleration of + 2.9 m/s2. At a certain instant its velocity is + 8.6 m/s. What is its velocity (a) 2.1 s earlier and (b) 2.1 s later?
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Jamari Hendrix
Physics
9)
Maximum height of rockets
Half-filled Three-quarters filled Full
2-liter bottle 18m 21m 17m
1-liter bottle 12m 15m 20m
0.5-liter bottle 10m 12m 14m
Plastic soda bottles are hooked up to a launcher. The launcher uses the water pressure to propel the rocket upward. What combination yields greatest height?
A) A full 2-liter bottle
B) A full 1-liter bottle.
C) A three-quarter full 1-liter bottle
D) A three-quarter full 2-liter bottle
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Benjamin Holland
Physics
What materials electricians should avoid wearing.
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Brenna Cunningham
Physics
There are competitions in which pilots fly small planes low over the ground and drop weights, trying to hit a target. A pilot flying low and slow drops a weight; it takes 3.0 s to hit the ground, during which it travels a horizontal distance of 170 m. Now the pilot does a run at the same height but twice the speed. How much time does it take the weight to hit the ground?
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Norris
Physics
How do the speeds of sound and light waves compare?
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Snowball
Physics
Greek philosophers such as Demoncritus and Aristotle had ideas about the composition of matter. For example, Demoncritus believed matter was made of tiny, solid spheres that he called atomos, and Aristotle thought matter was made up of earth, water, fire, and air. Aristotle's idea of matter was the accepted idea for over 2,000 years until John Dalton came up with a new theory about matter based on his experimental data. Which of the following best explains why Dalton's theory became more widely-accepted over Aristotle's theory?
A) Aristotle's theory became the law of conservation of mass when he documented phase changes of matter.
B) Dalton's theory was more complete because more respected scientists found the ideas possible.
C) Aristotle's theory did not have enough direct evidence due to poor observational tools.
D) Dalton's theory had repeated observations which were supported by extensive evidence.
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Nataly Ingram
Physics
Which diagram represent a generader
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Phoebe Townsend
Physics
A pitcher threw a baseball straight up at 35.8 meters per second. what was the balls velocity after 2.50?
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