theEric
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Hi! I'm from Pennsylvania in the United States.
I'm not the quickest learner, and I know school can be too fast-paced, so I like to come here to help people get through it, or get ahead, or satisfy curiosity!
I'm in college physics and computer science programs, excelling more at computer science grade-wise because it hasn't gotten tough yet. But I think I have more physics knowledge, since I get more experience with physics.
Both of those require math, so I can also help with some math stuff!
And I love the OpenStudy feature that lets me type equations and draw!
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Questions Answered
silverxx:
kinamatics
updated 13 hours ago
12 replies
1 Medal
Mathematics
halo3:
Answer the following questions in full sentences and paragraphs, using at least 150 words, in the essay box below.
1. Which organisms are c…
updated 15 hours ago
2 replies
2 Medals
Mathematics
1234mutu:
OPTIMIZING--Please help
…
updated 15 hours ago
17 replies
1 Medal
Mathematics
1234mutu:
A Norman window has the shape of a semicircle atop a rectangle so that the diameter of the semicircle is equal to the width of the rectangle…
updated 16 hours ago
3 replies
No Medals Yet
Mathematics
432brii:
calculate the molarity of 10.0 g of NaOH were dissolved in 500.0mL of solution
updated 9 hours ago
2 replies
No Medals Yet
Mathematics
missylulu:
angular momentum of sun as it spins about its own axis? can someone check the math
updated 16 hours ago
3 replies
No Medals Yet
Mathematics
historygeek96:
Light with a wavelength of 5.0 · 10-7 m strikes a surface that requires 2.0 ev to eject an electron. Calculate the energy, in joules, of one…
updated 15 hours ago
4 replies
1 Medal
Mathematics
silverxx:
projectile motion
updated 14 hours ago
17 replies
1 Medal
Mathematics
Eli_Moses:
Sound will not travel in a
1) solid
…
updated yesterday
5 replies
3 Medals
Mathematics
Ginavg:
A branch falls from a tree. How fast is the branch moving after 0.28 seconds?
updated yesterday
1 reply
1 Medal
Mathematics
tsbarker13:
Just trying to teach myself Java. How do I define an exception I can throw -- say I am asking someone to enter an age, but I want to test t…
updated 14 hours ago
3 replies
No Medals Yet
Mathematics
errwrsysalan:
@theEric @PsiSquared @Vincent-Lyon.Fr
About diffuse reflection
First, check my understanding please: http://www.physicsclassroom.com/Class…
updated 21 hours ago
17 replies
1 Medal
Mathematics
PhoenixFire:
Given the equation of damped shm \[\frac{d^2x}{dt^2} +B\frac{dx}{dt}+Cx=0\]
And the solution \[x=Ae^{-\frac{t}{T}} cos(wt+d)\]
Where T is …
updated yesterday
6 replies
2 Medals
Mathematics
Chibi_Robo3:
When you rub a glass rod with silk, the rod becomes positively charged; when you rub a plastic rod with fur, the rod becomes negatively char…
updated 17 hours ago
6 replies
1 Medal
Mathematics
aminehr:
PLZ HELP!!!!!!
6. A boat is traveling west across a river. The river is 400.0m wide and the speedometer reading on the boat is 30.0 km/hr. …
updated 16 hours ago
10 replies
1 Medal
Mathematics
jz55:
How much work does a 100-watt light bulb do when it is lit for 30 seconds?
updated 2 days ago
6 replies
No Medals Yet
Mathematics
errwrsysalan:
When we see white light, is it a constructive interference of red light, green light and blue light? How could a light bulb make so many dif…
updated yesterday
22 replies
3 Medals
Mathematics
theEric:
Would anybody be able to help me learn oscillatory motion for multiple objects using matrices? In class we've been using the Lagrangian, but…
updated 2 days ago
1 reply
No Medals Yet
Mathematics
DanielaLoya1225:
6. Observe and Infer. The offspring of a cross between a plant with purple flowers and a plant with white flowers are 23 plants with purple …
updated 2 days ago
3 replies
No Medals Yet
Mathematics
veronika.S:
A young child is pulling a sled in the snow. if the force the child exerts on the sled is equal to the force the sled exerts on child but op…
updated 2 days ago
4 replies
1 Medal
Mathematics
missishaeve:
The term heat in physics is
A. the same as work…
updated 2 days ago
2 replies
2 Medals
Mathematics
alanta002:
What is the name of a system that converts thermal energy into a form of useful mechanical or electrical energy?
incubator
heat engine
…
updated 10 hours ago
3 replies
1 Medal
Mathematics
theEric:
I'm studying harmonic motion by understanding it through potential energy. But there seems to be so many things going on, and I was hoping s…
updated 2 days ago
9 replies
1 Medal
Mathematics
errwrsysalan:
Suppose a source of spotlight produces millions of light rays to travel left. When we get far enough from the source, there should be gaps b…
updated 2 days ago
11 replies
3 Medals
Mathematics
thibui:
That type of lens must be used to produce an image that can be projected on a screen?
A. The lens must be diverging, and the object must …
updated 2 days ago
11 replies
No Medals Yet
Mathematics
Rdx:
I was studying linked list. I am not able to understand what is node*, if it is a pointer why not write *node? How does it work?
updated 17 hours ago
6 replies
2 Medals
Mathematics
pinkrose550:
URGENT! HELP!?
1) Determine the extension of the trampoline when a 200 kg person stands on the trampoline. (k=12000)
…
updated 2 days ago
23 replies
2 Medals
Mathematics
thibui:
A light ray travels from water (n = 1.33) to crown glass (n = 1.52) and bends at a 30º angle to the normal.
What is the incident angle …
updated 4 days ago
3 replies
1 Medal
Mathematics
thibui:
In an optical fiber, light travels in
A. straight line paths internally reflecting when it hits the fiber.
…
updated 4 days ago
6 replies
No Medals Yet
Mathematics
Zehmil:
Consider that the room is a closed system. Ryan uses the chemical energy in his muscles to create the energy of motion. He uses this energy …
updated 4 days ago
1 reply
No Medals Yet
Mathematics
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