Picture water flow of four straws, short and fat, short and thin, long and fat, and long and thin.

Think about how water would flow through two configurations of these same four straws:

One version where the four straws are taped end-to-end to make one long straw

The other version where all four straws are taped together side by side, so you would suck water through all four at the same time

Which of these two configurations produces the lowest current? Which produces the highest? Why?

Two loudspeakers are located 2.53 m apart on an outdoor stage. A listener is 21.4 m from one and 22.2 m from the other. During the sound check, a signal generator drives the two speakers in phase with the same amplitude and frequency. The transmitted frequency is swept through the audible range (20 Hz to 20 kHz). (a) What is the lowest frequency f_min,1 that gives minimum signal (destructive interference) at the listener's location? By what number must f_min,1 be multiplied to get (b) the second lowest frequency f_min,2 that gives minimum signal and (c) the third lowest frequency f_min,3 that gives minimum signal? (d) What is the lowest frequency f_max,1that gives maximum signal (constructive interference) at the listener’s location? By what number must f_max,1 be multiplied to get (e) the second lowest frequency f_max,2 that gives maximum signal and (f) the third lowest frequency f_max,3 that gives maximum signal? (Take the speed of sound to be 343 m/s.)

Answers to 3 significant digits. No scientific notation. Provide units. Thank you!

What is crystal field effect? Please state that in terms of Px, Py, and Pz orbits. (Please briefly description)

A block with mass m =7.5 kg is hung from a vertical spring. When the mass hangs in equilibrium, the spring stretches x = 0.25 m. While at this equilibrium position, the mass is then given an initial push downward at v = 4.1 m/s. The block oscillates on the spring without friction.

After t = 0.3 s what is the speed of the block?

What is the magnitude of the maximum acceleration of the block?

At t = 0.3 s what is the magnitude of the net force on the block?

Where is the potential energy of the system the greatest?

At the highest point of the oscillation.

At the new equilibrium position of the oscillation.

At the lowest point of the oscillation.

A cube 23 cm on each side contains 3.7 g of helium at 20∘C. 1000 J of heat energy are transferred to this gas.

A) What is the final pressure if the process is at constant volume?

B)What is the final volume if the process is at constant pressure?

Two shuffleboard disks of equal mass, one orange and the other yellow, are involved in an elastic, glancing collision. The yellow disk is initially at rest and is struck by the orange disk moving with a speed of 5.60 m/s. After the collision, the orange disk moves along a direction that makes an angle of 36.0° with its initial direction of motion. The velocities of the two disks are perpendicular after the collision. Determine the final speed of each disk.

The average distance separating earth and the moon is 384,000 kg (center to center). What is the Net gravitational force exerted by the earth and the moon on a 2.75x10⁴ kg spaceship located half way between them (take the direction toward earth to be positive? if the spaceship falls toward earth starting from rest at a point where it is located 55,00km above the surface of the earth, what is its velocity at that point?

Short response: Most astronomical telescopes make use of spherical mirrors for their objectives.

What are some advantages for using these mirrors over a similar lens?

What issues may still plague the image formation by these mirrors?

Starting from rest, a 36.7-gram steel ball sinks into a vat of corn syrup. The thick syrup exerts a viscous drag force that is proportional to the ball\'s velocity:

Drag= -Cv

where C = 0.270 N·s/m is a constant related to the size and composition of the ball as well as the viscosity of the syrup. Find the rate at which gravitational energy is converted to thermal energy once the ball reaches terminal velocity. (in W)

For an object of given mass pushed against a vertical surface, and given a coefficient of static friction, calculate the horizontal force necessary to prevent vertical motion

A water pistol aimed horizontally projects a stream of water with an initial speed of 6.30 m/s. (a) How far does the water drop in moving 1.15 m horizontally? (b) How far does it travel before dropping a vertical distance of 2.20 cm?

A 2.9 kg block is projected at 5.4 m/s up a plane that is inclined at 40∘ with the horizontal

a
How far up along the plane does the block go if the coefficient of kinetic fraction between the block and the plane is 0.375?

b..How far up the plane does the block go if
If the block then slides back down the plane, what is its speed when it returns to its original projection point?the plane is frictionless? Give your answer with three significant figures.

c.

Please provide a 250 word explanation AND DESCRIPTION OF A REAL WORLD APPLICATION of one of the following topics:

-ideal gases or the ideal gas law

-the gas constant or the Boltzmann constant

-the root mean square speed of molecules in a gas

-molar specific heat

-the mean free path of a gas molecule

Please be descriptive and include example equations if possible. If post meets requirements of 250 words, explanation of theory, AND A REAL WORLD APPLICATION, I will promptly thumbs up. Thank you!

I need to figure out what questions could be asked from these scenarios.

- A snowboarder comes off of a ramp at an angle of theta above the horizontal, with a speed of v. The end of the ramp is a height h above the ground. Neglect friction and air resistance.

- A boy is standing on a ramp that is inclined at an angle theta above the ground. He is not slipping due to a static frictional force of f_s.

- A boy tries to toss a ball of mass m into his toy wagon, which is initially at rest. The ball hits the wagon at a velocity of v, at an angle theta below due east. Instead of staying in the wagon, the ball bounces out of the wagon with a velocity of v_2, at an angle theta_2 above due east. After being hit by the ball, the wagon has a velocity of v_3, due east. Neglect friction.

- A box that is of length l and height h is sitting on a small bench. The combined center of gravity of the box and bench is located a distance d to the right of the left bench support. The box and bench have a combined mass of M.

- A vertical frictionless spring with a spring constant of k is mounted unstrained on the floor. An object of mass m is dropped onto the spring from directly above, compressing the spring by a distance y. Ignore air resistance.

- A fluid of a given density is flowing through a tube that has a single entry and a single exit point. The second half of the tube has a greater diameter than the first half.

- Object 1 has a temperature of T and is placed in thermal contact with Object 2, which has an initial temperature of T_2. Object 2 is twice as massive as Object 1. The two objects eventually reach a thermal equilibrium at a temperature of T_3.

- n moles of a monatomic ideal gas expands adiabatically, and its temperature decreases from T_1 to T_2.

(8%) Problem 3: A 0.275-kg aluminum bowl holding 0.65 kg of soup at 25.0°C is placed in a freezer.What is the final temperature, in degrees Celsius, if 377 kJ of energy is transferred from the bowl and soup, assuming the soup’s thermal properties are the same as that of water? Specifically, you can assume the latent heat of fusion for the soup is 334 kJ/kg.