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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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 2 days ago
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 yesterday
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 yesterday
10 replies
1 Medal
Mathematics
jz55:
How much work does a 100-watt light bulb do when it is lit for 30 seconds?
updated 3 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 2 days ago
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 3 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 3 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 3 days ago
4 replies
1 Medal
Mathematics
missishaeve:
The term heat in physics is
A. the same as work…
updated 3 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 12 hours ago
4 replies
2 Medals
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 3 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 3 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 3 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 yesterday
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 3 days ago
23 replies
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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 5 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 5 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 5 days ago
1 reply
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Mathematics
Zehmil:
What function does a generator perform inside a power plant?
…
updated 5 days ago
3 replies
1 Medal
Mathematics
BonjourSalut:
8. All KE is lost when:
(a) two bodies of equal mass collide,
(b) two bodies of opposite initial velocity collide,
…
updated 5 days ago
14 replies
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Mathematics
jnejls:
What is (3.2 × 10^4) × (2 × 10^–2)?
updated 8 days ago
11 replies
1 Medal
Mathematics
theEric:
In thermodynamics, I have to use the partition function to find \(\bar\varepsilon\). I'm not comfortable with this material though, so any h…
updated 8 days ago
61 replies
3 Medals
Mathematics
TheJP:
Peter played his favorite video game for 10 hours last week. Today Peter's parents restricted him to 5 hours each week for the next 8 weeks.…
updated 8 days ago
26 replies
3 Medals
Mathematics
suhoping:
can someone check this easy question for me?
I think the answer is B but im not sure if it's just D
…
updated 8 days ago
11 replies
1 Medal
Mathematics
KataKy16:
being aware of natural forces will
updated 8 days ago
1 reply
1 Medal
Mathematics
larquitta1995:
Which of the following actions is best understood using Einstein's concepts rather than Newtonian physics?
A. The flight of an arrow s…
updated 8 days ago
5 replies
1 Medal
Mathematics
jemeeka:
Which object exerts more gravitational force, object A with a mass of 25 grams and a density of 2 g/cm3 or object B with a mass of 55 grams …
updated 8 days ago
1 reply
No Medals Yet
Mathematics
Takeiaw:
water has an index of refraction of 1.33. what is the speed of light in water
updated 9 days ago
1 reply
1 Medal
Mathematics
Johnlin1:
Which travels fastest through dense matter?
A.
…
updated 9 days ago
8 replies
No Medals Yet
Mathematics
Chibi_Robo3:
An air track glider of mass 0.200 kg, moving at 1.0 m/s collides elastically with another glider of mass 0.050 kg equipped with a perfectly …
updated 8 days ago
14 replies
2 Medals
Mathematics
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