One speaker A is located in origin and another speaker B is located at point (3.0),
the units in the xy plane measure in meters and the speakers are the same. At a point P = (1,4) is one
microphone placed. The speakers are connected to a tone generator that generates sinus tones
(flat waves) so that speaker B lies ?/4 after A in phase and the sound speed is 350m/s.

a) Draw time graphs for both speakers' oscillations when the frequency is 500 Hz.
b) Determine the three lowest frequencies that give complete constructive interference in the point
c) Determine the three lowest frequencies that give complete destructive interference in point P.

Calculate the binding energy per nucleon for each of the following nuclei. (Use the table of atomic masses as necessary.)

(a) ²H
(MeV)

(b) ¹⁴N
(MeV)

(c) ²³Na
( MeV)

(d) ³²S
(MeV)

A 674-kg elevator starts from rest and moves upward for 2.90 s with constant acceleration until it reaches its cruising speed, 1.80 m/s.

(a) What is the average power of the elevator motor during this period?______________ hp

(b) How does this amount of power compare with its power during an upward trip with constant speed? (Give the power during an upward trip with constant speed.)____________________ hp

A geostationary satellite is in a circular orbit around the Earth. What is the linear speed of the satellite?

Moana is a sailing from her home to a nearby island which is 215 miles north and 33 miles west. There is a constant ocean current of 0.50 knots moving from west to east. Moana can sail her boat at a cruising speed of 5.5 miles per hour in still water.

1. What angle should Moana sail to get to the island?

2. How long will it take her to get there?

3. Moana’s friend Maui is floating on a raft that is moving with the ocean current (meaning, he is not traveling with respect to the water). Would Maui see Moana’s boat traveling with a speed faster than, slower than, or equal to what an observer standing on the shore would see? Explain your reasoning

why do we see different colors come out when all the colors of white light enter the drop? explain not only what happens but why

explain why there is a second rainbow further out from the primary rainbow

how is the second rainbow different from the primary(other then its position in the sky

what explains why the sky is darker between the primary and secondary rainbow than above the primary?

Badminton (True or False)

1. The doubles service court consists of the same area as the singles service court.

2. In doubles play, a long high serve is the best serve.

3. Rally point scoring seems to favor a more highly skilled player.

4. To get within reach of the bird, good footwork requires shuffling or sliding your feet into a position to hit.

5. Proper badminton footwork requires you to reach for the shuttle with your dominant arm and leg to save time and to aid in a fast recovery.

1. For each part, select the best underlined option, then explain why it is the best. If you want to keep a hot beverage hot as long as possible, should you:

a. Store it in a bottle that is tall and thin, or one that is short and wide? (The short and wide one has a bigger surface area, but they both have the same volume)

b. Wrap the bottle with a one centimeter thick sheet of wool or a two centimeter thick sheet of wool?

c. Increase the temperature of the room the bottle is in, or decrease the temperature of the room the bottle is in?

Equations:

v = λ f (velocity = wavelength * frequency)

Rate of cooling = A ΔT (cooling rate = inverse of resistance * Area * Temperature difference)

Radioactive waste can remain dangerous for a hundred thousand years. GE Hitachi created a new power plant that can use radioactive waste and reduce the storage requirements to 300 years. In GEH’s view, what is generally considered to be “nuclear waste” these days is not really waste at all. Light Water Reactor (LWR) used nuclear fuel is composed of 95 percent uranium, 1 percent transuranics, and 4 percent fission products. Many of these transuranic isotopes have long half-lives, which can create long-term engineering challenges for geologic disposal. By using electro-metallurgical separations, PRISM is designed to perform the recycling of the 96 percent of the fissionable material (uranium and transuranics) remaining in used nuclear fuel.

Think about our current and possible future uses of nuclear power. In your initial post, please discuss the following questions:

What do you see as potential problems?

What do you see as the dangers today and in the future?

If you were in the position to make decisions about the output of nuclear power production, what would you do and why?

A standard flashlight battery can deliver about 4.9 W·h of energy before it runs down. (a) If a battery costs 80 cents, what is the cost in dollars of operating a 100 W lamp for 11 h using batteries? (b) What is the cost in dollars if power is provided at the rate of 6.0 cents per kilowatt-hour?

Suppose you throw a ball into the air. Do you think it takes longer to reach its maximum height or to fall back to earth from its maximum height? We will solve the problem in this project, but before getting started, think about that situation and make a guess based on your physical intuition. 1. A ball with mass m is projected vertically upward from the earth’s surface with a positive initial velocity v0. We assume the forces acting on the ball are the force of gravity and a retarding force of air resistance with direction opposite to the direction of motion and with magnitude p|v(t)|, where p is a positive constant and v(t) is the velocity of the ball at time t. In both the ascent and the descent, the total force acting on the ball is pv mg. (During ascent, v(t) is positive and the resistance acts downward; during descent, v(t) is negative and the resistance acts upward.) So, by Newton’s Second Law, the equation of motion is mv0 = pv mg Solve this di↵erential equation to show that the velocity is v(t) = ✓ v0 + mg p ◆ ept/m mg p 2. Show that the height of the ball, until it hits the ground, is y(t) = ✓ v0 + mg p ◆ m p ⇣ 1 ept/m⌘ mgt p 3. Let t1 be the time that the ball takes to reach its maximum height. Show that t1 = m p ln ✓mg + pv0 mg ◆ Find this time for a ball with mass 1 kg and initial velocity 20 m/s. Assume the air resistance is 1 10 of the speed. 1 4. Let t2 be the time at which the ball falls back to earth. For the particular ball in Problem 3, estimate t2 by using a graph of the height function y(t). Which is faster, going up or coming down? 5. In general, it’s not east to find t2 because it’s impossible to solve the equation y(t)=0 explicitly. We can, however, use an indirect method to determine whether ascent or descent is faster: We determine whether y(2t1) is positive or negative. Show that y(2t1) = m2g p2 ✓ x 1 x 2 ln x ◆ where x = ept1/m. Then show that x > 1 and the function f(x) = x 1 x 2 ln x is increasing for x > 1. Use this result to decide whether y(2t1) is positive or negative. What can you conclude? Is ascent or descent faster?

Please answer #3

Please restate the problem to be solved, and define all variables and parameters. Please explain your reasoning and strategy for solving the problem. Please go over basic principals or key processes underlying the problem that was addressed in the paper. Please include an interpretation of the information in the context in which the problem was solved. Please state your conclusions in complete sentences which stand on their own

Sorry, I know this is a lot

A thin, cylindrical rod ℓ = 27.0 cm long with a mass m = 1.20 kg has a ball of diameter d = 10.00 cm and mass M = 2.00 kg attached to one end. The arrangement is originally vertical and stationary, with the ball at the top as shown in the figure below. The combination is free to pivot about the bottom end of the rod after being given a slight nudge.

I am looking for the; How does it compare with the speed had the ball fallen freely through the same distance of 32.0 cm?

As well as the V swing and the V fall. (There is the exact question of this on chegg already posted if needing to see the other parts of the question in order to get this answer)

An object of mass 0.50 kg is released from the top of a building of height 2 m. The object experiences a horizontal constant force of 1.1 N due to a wind blowing parallel to the face of the building.

(a) Find the time it takes for the object to strike the ground. _____s

(b) What is the magnitude of the acceleration of the object? ______m/s2

(c) Through what horizontal distance does the object move before it hits the ground? _____m