Hello, I'm usually a PF user in General Physics/Chemistry, but I might need the help of you quantum physics users :), recently I have started a quantum chemistry module and I'd appreciate if I could clear some stuff up with you guys rather than look like a penis by asking all my friends, who...
Homework Statement
a 5L verssel contains notrogen gas at 27 degrees celcius and 3 atm. Find a) total translational kinetic energy of gas molecules and b)average kinetic energy per molecule
Homework Equations
Etrans=3/2nRT and etrans=3/2NkT, N=6.022x10^23 n=mass/molarmass,
R=.0821...
Homework Statement
Is translational energy the same thing as kinetic energy?The Attempt at a Solution
In a sense, I feel like it is, since they both deal with energy of motion, but then again, isn't kinetic energy the sum of translational, rotational, AND vibrational motion?
In my text
y(x,t)=Acos(kx-ω t)
In the teacher's handout:
y(x,t)=Asin(kx-ω t)
There's a translational difference of pi/2 between them! I don't know which one to use for the test :S
Homework Statement
A bucket of water of mass 14.2 kg is suspended by a rope wrapped around a windlass, that is a solid cylinder with diameter 0.350 m with mass 12.1 kg. The cylinder pivots on a frictionless axle through its center. The bucket is released from rest at the top of a well and...
A bowling ball encounters a 0.760-m vertical rise on the way back to the ball rack, as the drawing illustrates. Ignore frictional losses and assume that the mass of the ball is distributed uniformly. The translational speed of the ball is 7.88 m/s at the bottom of the rise. Find the...
I know that the translational energy of gas can be represented by
3/2NkT
where N = number of molecules, k = boltzmann's constant, T = temperature
my textbook says that the change in entropy is
(delta)S = (integral from 1 to 2) dS = (integral from 1 to 2) dU/T + (integral from 1 to 2) PdV/T...
Homework Statement
A basketball weighs 500grams or (.5 kg) it has a radius of 10cm (.10 m) and is rolling at 2.0 m/s. Find translational Ke Rotational Ke Translational momentum and Rotational momentum.
Homework Equations
translational ke= 1/2mv^2
rotational ke = 1/2Iw^2 ( I am unsure...
1. A uniform stick of mass m and length l spins arounds on a frictionless horizontal table, with its CM stationary (but not fixed by a pivot). A mass M is placed on the plane, and the end of the stick collides elastically with it, as shown. What should M be so that after the collision the...
Suppose that your mass is 80 kg. How fast would you have to run to have the same translational momentum as a 1600 kg car moving at 1.2 km/h? I happen to know the answer is 24 km/hr. But, how do I get to this answer? What are the steps? Could someone solve it out and show me how they got it...
Hello,
I wanted to know if the translational motion of the stars & planets are according to a polynomial sequence or not?? if not then how can the scientists predict the position of a specific star/planet after a specific period of time??
Thankyou for your answer...
Gents,
Is it possible to have the not singular chiral current (singularity is due to the product of fermionic operators) and at the same time the translational invariance. Normaly to get rid of singularity in chiral current one is useing the point splitting regularisation (little shift of...
Compute the total translational kinetic energy of one liter of oxygen gas at atmospheric pressure.
<E>=3/2 kT
assuming that the T is about the temperature of Earth's surface, 300K, then:
\frac{1}{2} mv^2 = \frac{3k(300K)}{2}
what I am wondering is, is this the total translational...
In translational motion all parts of rigid body move with same speed and in same direction!I have a bit of problem between figuring out if particular motion is just translational or also rotational.
If person slowly walks on top of gently rising hill, is his motion also at least partially...
Hello everyone,
I'm working on a basic spaceflight simulator during the break, and I've been unable to come up with some info I need to do the physics.
Suppose you have a simple object... say, a beam of dimensions w, h, and d. Then suppose (for example) you apply a constant force at the...
I started my aerospace enginnering degree this year but have missed the first 7 weeks of lectures due to being in hospital, i was sent all lecture notes but am strugling with my mech module. I have my first assignment questions due in this week and am having dificulty thought you guys might be...
A 10.7kg cylinder rolls without slipping on a rough surface. At the instant when its center of gravity has a speed of 11.8 m/s,
a) Find the translational kinetic energy of its center of gravity.
b) Find the rotational kinetic energy about its center of mass at that time.
c) What is...
A bowling ball encounters a 0.760-m vertical rise on the way back to the ball rack, as the drawing illustrates. Ignore frictional losses and assume that the mass of the ball is distributed uniformly. The translational speed of the ball is 5.64 m/s at the bottom of the rise. Find the...
A bowling ball encounters a h = 0.621 m vertical rise on the way back to the ball rack
Ignore frictional losses and assume that the mass of the ball is distributed uniformly. The translational speed of the ball is 3.70 m/s at the bottom of the rise. Find the translational speed at the top...
The center of mass of a pitched base ball (radius=3.8cm) moves at 38m/s. The ball spins about an axis through its center of mass with an angular speed of 125 rad/s. Calculate the ratio of the rotational energy to the translational kinetic energy. Treat the ball as a uniform sphere...
Problem-
Two blocks are connected by a string. The smooth inclined surface makes an angle of 42 with the horizontal, and the block on the incline has a mass of 6.7kg. Find the mass of the hanging block that will cause the system to be in equilibruim.
Answer-
so far i have gooten this:
t1x=...
We've been set the question of- In an isothermal expansion, and ideal gas at initial pressure Po expands until its volume is twice its initial volume. When the gas is compressed adibatically and quasi-statically ack to its original volume, its pressure is 1.32Po. How does the translational...