Question

When we are dealing with paraxial rays (d/R<<2), how does the
result depends on R? (d/2 can be ignored compared with R)

Please explain in details

Answer #1

2
A) In many spectra, you will see an overlap of X-rays
and gamma rays. What distinguishes X-rays from gamma
rays?
B) Explain how GPS can help you to locate
your position.
C) Why is a radio station not able to transmit
microwaves?
D) A doctor shows a patient an X-ray of a fractured bone.
Explain how the image is produced. What kinds of materials can
X-rays penetrate? What can X-rays not penetrate?
E) Ultraviolet rays, X-rays, and gamma rays...

2.Assume that investment depends on both the interest rate and
the level of GDP. We will call the effect of output on investment
(loosely) the “accelerator” effect. a. Compare the multipliers for
an adverse demand shock on Y with and without the accelerator
effect using (i) the algebraic solution for the multiplier and (ii)
IS and LM curves. b. Does the addition of the accelerator affect
the direct, positive or negative feedback effects? c. Also show how
the addition of...

1.
What does an r value of zero
mean?
Solution
2.
When n = 2 and r = 1,
are the data significant? Explain.
Solution
.
3.
When n = 100 and r =
–0.89, is there a significant correlation? Explain.
Solution
4.
When testing the significance of the correlation
coefficient, what is the null hypothesis?
Solution
5.
When testing the significance of the correlation
coefficient, what is the alternative hypothesis?
Solution

When we talk about span a phrase that is often used is "does
this set of vectors span R". What does this mean and what is it
asking? Also, how do I discover if something does span R? Can you
also provide a stepwise example of how to go about this?

How does [B] change when D is added to the following reaction at
equilibrium?
2 A(g) + B(g) ↔ 2 C(g) + D(s)
How does [B] change when D is added to the following reaction at
equilibrium?
2 A(g) + B(g) ↔ 2 C(g) + D(s)
[B] will not change.
Cannot be predicted.
[B] will increase.
[B] will decrease.

1. What’s the rationale for producing a R&D budget?
2. How often should a R&D budget be evaluated?

Explain how we can ensure that we're not violating the 4th
assumption for Pearson r.

Which one of the following molecules does not have delocalized
orbitals ?
A) SO2
B) C6H6
C) C2H4
D) CO3-2
E) NO3-
Please explain in details how can i solve this question!

When we immediately expense the capital investment instead of
depreciating over time, how does this affect the Capital Budgeting
problem ? Does it mean that the depreciation for this will be 0 and
subtract the cost of the asset from the income ? Please help me in
understanding how this works.

1. If a test is robust, what does this allow us to do?
2.When we state that there is homogeneity of variance, precisely
which variances are homogeneous?
3.If you underestimate sigma, the standard deviation of the
population, the result is
a. the t-statstic being too small
b. a smaller probability of type i error
c. the estimated standard error being too large
d. all of the above
e. none of the above

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