Velocity = distance / time. As long as your time is not zero, it is defined. It's only the denominator that needs to be non-zero.
The average speed is the total distance traveled divided by total time spent traveling.
The velocity is similar, only it involves the total distance traveled in a...
I think the problem assumes that there is zero force acting on the car. Rather, there is only an initial velocity: like if you pushed a toy car and let go.
In other words, what you need is an expression for the potential energy of a chain segment in terms of the displacement of that chain segment (a segment hanging 5 inches down would have displacement of 5 inches).
Now, integrate that over the entire portion of the chain which is displaced.
An integral is essentially like doing a lot of addition. Think for example that each chain link is 0.05 m long, and weighs 0.1 kg. Assume five links are hanging off the edge.
Think about each chain link is being pulled up discretely. The first link must be moved 0.05m, the second must be...
Typically impulses are used with inelastic collisions, such as a projectile hitting another object and indenting it somewhat. For example, imagine dropping a golf ball into a bowl of sand.
Please be more specific as to which forces you are trying to calculate. If it is a homework problem...
It's actually quite simple and very hard to hint at, so I'll just say it.
If you have a capacitor-inductor (L-C) circuit, the overall voltage and current will oscillate according to time as the energy is transferred between the inductor's magnetic field and the capacitor's electric field.
Once...
0.8 m/s is the man's initial velocity, it seems to be a straightforward application of the equation relating distance and acceleration:
\[
d = v_0 + {\textstyle{1 \over 2}}at^2
\]
-t will be the time it takes the cockroach to reach its shelter
-distance will be the distance the person needs...
I really doubt that the lab would be at 212 degrees fahrenheit.
The question is asking whether it takes longer to go from 150>>100 or from 100>>50 in an environment that is 20 degrees to start with.
Temperature loss occurs the faster at bigger differences, and slower when close to equilibrium.
Is this the exact wording of the problem? If the two points are simply "within" one wavelength of each other, then it could really be anything. The information that you stated is not enough to calculate the wavelength. Are you sure there is no more information, such as the wave speed, the...
The voltage from point a to point b is +28V.
Each capacitor has a capacitance of 4.00uF (microfarads)
What is the best way to calculate the charge on each capacitor?
The ideal gas law is PV = nRT.
As you can see from it, the pressure will increase with decreasing volume, however the temperature doesn't need to change at all.
Try using this equation:
D = VoT + 1/2AT^2
Where Vo is the initial velocity. Once you find this, it is fairly straightforward to calculate the final velocity. Or, for a simpler method, just enter it as a positive acceleration and Vo will work out to be the final velocity!
Not everybody is "Science Smart", but don't sell yourself short. Everybody is good at something, this just happens to be a science forum. I think you'd be more right to say "science is not my thing".
Anyway, tell us what YOU know so far. Formulas and such that you know of.
This is a simple application of an impulse. I = Force * time, and is also the change in momentum. Momentum is mass times velocity. Momentum before = 81.9 * 4.7 = 384.93. Momentum after=81.9*-4.2= -343.98. Impulse = 728.91 = force * time. Time=.46. 728.91=force * .46. Force is then equal...
He was asking a theoretical question and wanted a theoretical answer. Many people need to stop being rude by saying "there wont be any difference". A theoretical question is used to grasp the concept, even if it is unable to be performed. clearly he is trying to learn something here.
I think they mean that G is just a point, and it's distance from F can be varied, although it start 1/8 of the track from F. But again, that's just how I interpreted it, we can all agree they stated whatever they meant to say very poorly.
Precisely the reason why. Because some people feel they need to re-post the right answer for seemingly no reason ;).
Joejo, answer these problems. Simplify these so there is no fractions, only exponents:
x^2 *x^{-5} = ??
\frac{x^7}{y^4} = ??
Answer those and we will be able to...