A laser beam of wavelength 580nm is incident normally on a transmission grating having 440lines/mm .

Find the angles of deviation in the first, second, and third orders of bright spots.

Sketch the overlap of orbitals between the HOMO and LUMO that would result in the formation of the preferred product. (anthracene and maleic anhydride diels-alder reaction)

For a parallel reaction A goes to B with rate constant k₁ and A goes to C with rate constant k₂, you determine that the activation energies are 24.6 kJ/mol for k₁ and 116.4 kJ/mol for k₂. If the rate constants are equal at a temperature of 318 K, at what temperature (in K) will k₁/k₂ = 2?

Two objects with masses 4.20kg and 2.20kg hang 0.500m above the floor from the ends of a cord 7.30m long passing over a frictionless pulley. Both objects start from rest.

a) Find the maximum height reached by the 2.20kg object.

what is the origin of the variety in the properties of polyurethanes

How to to find wave speed of a string using derivation of second newton law ?

2NO(g) + Br2(g) 2NOBr(g)   A reaction mixture was found to contain 4.70×10-2 moles of NO(g), 4.02×10-2 moles of Br2(g) and 9.28×10-2 moles of NOBr(g), in a 1.00 Liter container. Indicate True (T) or False (F) for each of the following: Indicate True (T) or False (F) for each of the following:

1. In order to reach equilibrium NOBr(g) must be produced.

2. In order to reach equilibrium Kc must decrease.

3. In order to reach equilibrium NO must be produced.

4. Qc is less than Kc.

5. The reaction is at equilibrium. No further reaction will occur.

Suppose that a random sample of nine recently sold houses in a certain city has a mean sales price of

$280,000

, with a standard deviation of

$12,000

. Under the assumption that house prices are normally distributed, find a

90%

confidence interval for the mean sales price of all houses in this community. Then complete the table below.

Carry your intermediate computations to at least three decimal places. Round your answers to the nearest whole number. (If necessary, consult a list of formulas.)

PYTHON ?Write a superclass encapsulating a rectangle. A rectangle has two attributes representing the width and the height of the rectangle. It has methods returning the perimeter and the area of the rectangle. This class has a subclass, encapsulating a parallelepiped, or box. A parallelepiped has a rectangle as its base, and another attribute, its length; it has two methods that calculate and return its area and volume. You also need to include a client class (with the main method) to test these two classes.??

A company is evaluating two independent projects for capital investment purposes. If the company has only $85 million to invest, and its required return is 10 percent by how much the company’s value will increase?

All values are in millions.

A mixture of CH4(g) and C2H6(g) has a total pressure of 0.55 atm . Just enough O2(g) is added to the mixture to bring about its complete combustion to CO2(g) and H2O(g). The total pressure of the two product gases is found to be 2.3 atm . Assuming constant volume and temperature, find the mole fraction of CH4 in the mixture. Please type out answer step by step. Thank you!

LaTanya Corporation is planning to issue bonds with a face value of $101,000 and a coupon rate of 6 percent. The bonds mature in seven years. Interest is paid annually on December 31. All of the bonds will be sold on January 1 of this year. (FV of $1, PV of $1, FVA of $1, and PVA of $1) (Use the appropriate factor(s) from the tables provided. Round your final answer to whole dollars.) Required: Compute the issue (sale) price on January 1 of this year for each of the following independent cases: a. Case A: Market interest rate (annual): 6 percent. b. Case B: Market interest rate (annual): 4 percent c. Case C: Market interest rate (annual): 7 percent.

A normal population has a mean of 65 and a standard deviation of 13. You select a random sample of 16. Compute the probability that the sample mean is: