Chlorine is an unusual element in that it has two abundant stable isotopes, Cl-35 and Cl-37, constituting, respectively, about 76% and 24% of natural chlorine. The masses of these isotopes in unified atomic mass units, are, to three significant figures, equal to their mass numbers of 35 and 37. A mass spectrometer is used with singly ionized chlorine atoms. The spectrometer has a 3.5-kV accelerating potential and a 163-mT magnetic field. How far apart will Cl-35 and Cl-37 ions be when they reach the detector

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A certain crystal is cut so that the rows of atoms on its surface are separated by a distance of 0.352 nm. A beam of electrons is accelerated through a potential difference of 175 V and is incident normally on the surface. If all possible diffraction orders could be observed, at what angles (relative to the incident beam) would the diffracted beams be found? (The surface acts as a diffraction grating where maxima occur when d sin? = n?, n = 1,2,3...)

A blacksmith heats a 1.4 kg iron horseshoe to 500?C , then plunges it into a bucket containing 20 kg of water at 15?C

What is the equilibrium temperature?

Express your answer using two significant figures.

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As per in the title. If it turns out that neutrinos do travel faster than the speed of light, how will the success of special relativity be explained? My apologies if this has been asked before; I've just browsed through few questions, and I couldn't find one that matches (although it was slightly touched on in one answer). Thanks.

hey i need perfect answer to following query. Needs 200 words for complete query. i need typed solution . Don't post any pic in solution.

Describe some important changes you would suggest to a “trebuchet” manufacturer. Explain your improvement in terms of motion in two dimensions.

Using the following equation: x = (8P/9M)^1/2 * t^3/2, Draw a graph of position vs time, when P=800W, P= 400W and P = 200W and M = 1632.6kg. Also draw a graph of velocity vs time. Is this a problem constant acceleration?

Two lenses are separated by L = 50.0 cm. The first lens (light coming from the left.) has a focal length f1 = 24.0 cm and the second lens has a focal length f2 = 18.0 cm. An object is located 40.0 cm (s1) to the left of the first lens. Calculate the position of the two images formed by the lens system. State whether each image is real or virtual. Repeat this problem with L = 10.0 cm.

Four identical point charges of magnitude q = 3.2 nC are placed at the corners of a rhombus of edge length l = 22 cm and obtuse angle θ. We intentionally leave θ undefined. Find the net electric force on each of the four charges. Your answer will depend on the angleθ. For convenience, orient your rhombus so that the charges are placed at (±x, 0) and (0, ±y).

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Write a few sentences addressing each of these prompts.

1. In your own words, what is the difference between electric force, electric field, and electric charge? You may find it easier to describe how the three concepts are related.

2. If two charges are observed to repel one another, what can you say about the sign of each? What if the two attract one another? With only this information (whether they attract or repel) can you identify which charge is which type (positive or negative)? What does this mean about the assignment of “positive” or “negative” charge?

3. In a very contrived situation, two students are discussing the following problem.

   “A point charge of 2 μC is placed in an electric field and experiences a force of 27 N. Find the electric field. The 2 μC charge is removed and replaced with a 4 μC charge. What is the electric field now?”

   One student insists the field is 13.5 N/C in both cases and the other says it is 13.5 N/C in the first case and 6.75 N/C in the second case. Why might each student take their stated position and which one is correct? Provide an argument based on the physics that could help the incorrect student see their error.

A thin nonconducting rod with a uniform distribution of positive charge Q is bent into a circle of radius R (see the figure). The central perpendicular axis through the ring is a z axis, with the origin at the center of the ring. What is the magnitude of the electric field due to the rod at (a) z = 0 and (b) z = ∞? (c) In terms of R, at what positive value of z is that magnitude maximum? (d) If R = 2.20 cm and Q = 4.30 μC, what is the maximum magnitude?

Assume that mountains higher than 10 km do not exist on Earth because bigger mountains could not be supported by the strength of rock at their bases. The pressure at the middle of the base of a mountain is equal to the weight of a column of rock (with unit cross section area) as high as the mountain. The pressure at the base of taller mountains would exceed the strength of the rock and the mountain would slump.

For rock of identical density (3000 kg m-3 ) and crushing strength, determine the maximum size cubic asteroid that could you could make out of two identical blocks with dimensions of L, L and L/2. The two blocks put together make a cube.

For a larger sized asteroid, the pressure between cubes caused by gravitational attraction would exceed the rock’s yield strength and it would flow - forming a more spherical shape. For calculation you can assume that the mass of block is concentrated at its center so that the pressure between the two blocks is just the force between the centers of mass divided by the contact area.

You have three capacitors: C1 = 1500. μF, C2 = 2400. μF, and C3 = 3600. μF. Find Ceq for a) all in series b) all in parallel c) c1 and c2 are in parallel and c3 in series with them d) c2 and c3 in parallel and R1 in series with them, e)c1 and c3 in parallel and c2 in series with them. f) For one of the three arrangements where only two of the caps are connected in parallel, calculate the ∆V ’s and Q’s for each capacitor in that arrangement, if connected to a E = 12.00 V EMF.

1.00 moles of a gas is at a temperature of 273 Kelvin and has a pressure of 1.00x10⁵Pa.

1. What is its initial volume?
2. STEP 1: Its pressure is doubled while keeping its volume constant. What is its temperature after this step?
3. STEP 2: Its temperature is held constant while it it is reduced back to its initial pressure. What is the the volume after this step?
4. Draw a PV diagram showing the two step (it doesn’t have to have numbers, just qualitatively correct)
5. What is the work done by the 2 Steps (in Joules)?

When energy enters your home does the energy need to be charged from ac to dc first before entering your phone or dc to ac? Not sure if I am asking this right but what is the basic idea behind how energy comes from a power plant to charge my cell phone?

Describe an experiment using an ideal calorimeter.