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Physics
Izabelle Castro
Edward travels 150 kilometers due west and then 200 kilometers in a direction 60° north of west. What is his displacement in the westerly direction
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Physics
Guest
January 1st 37°F
January 7th 48°F
January 14th 52°F
January 18th 51°F
January 21st 45°F
January 25th 41°F
January 31st 55°F
When looking at a data set of numbers, the mean is the average. Look at the table above. What was the mean temperature in January in Austin, Texas?
a 47°
b 48°
c 55°
d 37°
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Physics
Triston Atkinson
Pedro is planning to model how changes in weather affect evaporation from lakes. For his second experiment, he wants to test how winds affect the evaporation rate. He places one beaker with 300 mL of water in an area away from any fans, and he places another beaker with 300 mL of water near a small fan.
What is the dependent variable in Pedro's experiment?
A. Volume of water
B. Evaporation rate
C. Temperature
D. Movement of air
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Physics
Cindy Gilmore
How do you find the volume of a rock
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Physics
Guest
Can instantaneous velocity ever be negative?
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Physics
Esther Reynolds
What is the direction of magnetic field lines inside any magnet?
A.) they travel from north to south
B.) they travel from south to north
C.) they travel in a loop
D.) they travel back and forth within the magnet
E.) They do not travel through the magnet
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Physics
Belen Freeman
What can you assume has happened if an electron moves to a higher energy level
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Physics
Agustin Smith
What style of art represents people or objects exactly as they appear in life?
realism
impressionism
cubism
romanticism
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Physics
Javier Cabrera
Prove that, 1+sin t/cos t = cos t/1-sin t
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Physics
Kaila Powell
A spring gains 2.34 joules of elastic potential
energy as it is compressed 0.250 meter from its
equilibrium position. What is the spring constant
of this spring?
(1) 9.36 N/m (3) 37.4 N/m
(2) 18.7 N/m (4) 74.9 N/m
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Physics
Aracely Jefferson
True or false: all atoms of an element have the same number of protons in the nucleus?
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Physics
Eva Hayes
The weight of an object on a planet depends not only on its mass, but also on its distance from the planet's center. this table lists weight of 80 kg on each planet in the solar system. Uranus has more than 14 times as much mass as earth, yet the gravitational force is less. explain how this could be.
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Physics
Hailie Horne
Describe how you can use tempenture to compare how much thermal energy two objects have
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Physics
Isabela Christian
A persons amygdala is damaged, and he tends to get angry less than he used to. This suggests that the amygdala?
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Physics
Gwendolen
Two light sources can be adjusted to emit monochromatic light of any visible wavelength. The two sources are coherent, 2.04μm apart, and in line with an observer, so that one source is 2.04μm farther from the observer than the other.
Part A
For what visible wavelengths (400 to 700 nm) will the observer see the brightest light, owing to constructive interference?
Part B
What would your answers to part (a) be if the two sources were not in line with the observer, but were still arranged so that one source is 2.04μm farther away from the observer than the other?
Part C
For what visible wavelengths will there be destructive interference at the location of the observer?
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