Astronauts often see flashes when they are in space. How often these particles make their ways down to the Earth and hit us? What's the chance they hit our eyes and see flashes?

A hydrogen atom, initially at rest, absorbs an ultraviolet photon with a wavelength of λ=177.9nm.

Part A:

What is the atom's final speed if it now emits an identical photon in a direction that is perpendicular to the direction of motion of the original photon?

Express your answer to three significant figures and include appropriate units.

Part B:

What is the atom's final speed if it now emits an identical photon in a direction that is opposite to the direction of motion of the original photon?

Express your answer to three significant figures and include appropriate units.

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Match the vocabulary word to its definition.

Question 4 options:

Put the following in the order they occur in making urine

Question 3 options:

Describe a simple SIMD architecture for “Image processing” application.

Hi

I have an assignment that has this question basis on network protocols (multiple access protocols):

Q1 ) Explain why collision is an issue in random access protocols but not in channelization protocols?

I need an explanision for that question

Revenues generated by a new fad product are forecast as follows: Year Revenues 1 $50,000 2 35,000 3 30,000 4 20,000 Thereafter 0 Expenses are expected to be 40% of revenues, and working capital required in each year is expected to be 20% of revenues in the following year. The product requires an immediate investment of $60,000 in plant and equipment. a. What is the initial investment in the product? Remember working capital. b. If the plant and equipment are depreciated over 4 years to a salvage value of zero using straight-line depreciation, and the firm’s tax rate is 20%, what are the project cash flows in each year? Assume the plant and equipment are worthless at the end of 4 years. (Do not round intermediate calculations.) c. If the opportunity cost of capital is 10%, what is the project's NPV? (A negative value should be indicated by a minus sign. Do not round intermediate calculations. Round your answer to 2 decimal places.) d. What is project IRR? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places.)

Discuss in what areas of your organization, or an organization you are familiar with, should conduct association analysis. With what data objects should the organization attempt to discover relationships to other data objects. What would be the business benefits of uncovering these relationships?

A boy on a bicycle moving with 10 m/s approaches a moving car with 5 m/s (both are moving in the same direction) as he sounds his horn at frequency 400.00 Hz. The sounds he hears reflected back from the car. Assume speed of sound is 340 m/s. Calculate the frequency the boy perceives.

What would be the answer plus a step by step guide on how you managed this problem?

Thank you.

1)

The suspension system of a 1800 kg automobile "sags" 9.6 cm when the chassis is placed on it. Also, the oscillation amplitude decreases by 46% each cycle. Estimate the values of (a) the spring constant k and (b) the damping constant b for the spring and shock absorber system of one wheel, assuming each wheel supports 450 kg.

2)

The function
x = (1.5 m) cos[(5πrad/s)t + π/4 rad]
gives the simple harmonic motion of a body. At t = 4.6 s, what are the (a) displacement, (b) velocity, (c) acceleration, and (d) phase of the motion? Also, what are the (e) frequency and (f) period of the motion?

Assume that the expected rate of return on the market portfolio is 15% and the risk-free rate is 5%. The standard deviation of the market is 20% and assume that the market portfolio is efficient.

a) What is the equation for the Capital Market Line?

b) if an expected return of 40% is desired, what is the standard deviation of this position?
If you have a 1000$ to invest, how should you allocate it to achieve the above position?

c) If you invest 300$ in the risk-free asset and 700$ in the market portfolio, how much money can you expect to have at the end of the year?

Experiment with a simple derivation relationship between two classes. Put println statements in constructors of both the parent and child classes. Do not explicitly call the constructor of the parent in the child. What happens? Why? Change the child’s constructor to explicitly call the constructor of the parent. Now what happens?

What would be the system objectives of an early learning(1st – 3rd grade) website? Please list at least 10.

A small steel ball bearing with a mass of 11.0 g is on a short compressed spring. When aimed vertically and suddenly released, the spring sends the bearing to a height of 1.35 m. Calculate the horizontal distance the ball would travel if the same spring were aimed 27.0^o from the horizontal.

• Explain how rocks respond to those stresses within the Earth's crust by brittle, elastic, or plastic deformation, or by fracturing
• Summarize how rocks become folded
• Describe the conditions under which rocks fracture
• Briefly describe the different types of faults, including normal, reverse, thrust, and strike-slip