An ideal gas (which is is a hypothetical gas that conforms to the laws governing gas behavior) confined to a container with a massless piston at the top. (Figure 2) A massless wire is attached to the piston. When an external pressure of 2.00 atm is applied to the wire, the gas compresses from 6.40 to 3.20 L . When the external pressure is increased to 2.50 atm, the gas further compresses from 3.20 to 2.56 L . In a separate experiment with the same initial conditions, a pressure of 2.50 atm was applied to the ideal gas, decreasing its volume from 6.40 to 2.56 L in one step. If the final temperature was the same for both processes, what is the difference between q for the two-step process and q for the one-step process in joules?

Find inductance, L, of a concentric cable composed of two cylindrical wires: a solid inner wire of a radius a = 2 mm carrying a constant current I, and a very thin cylindrical outer wire of a radius b = 5 mm and carrying a constant current ??I.

Type (at least 200 words):  Electromagnets, Magnetic Fields and Magnetic Field Strengths (no formulas only relation). Also, write about Force on a Moving Charge in a Magnetic Field and transformers. Work out easy examples using transformers and Ohm’s law.

Ugonna stands at the top of an incline and pushes a 100−kg crate to get it started sliding down the incline. The crate slows to a halt after traveling 1.50 m along the incline. (a) If the initial speed of the crate was 1.85 m/s and the angle of inclination is 30.0°, how much energy was dissipated by friction? (b) What is the coefficient of sliding friction?

A particle of charge ?7.5 mC is released from rest at the point x ? 60 cm on an x axis. The particle begins to move due to the presence of a charge Q that remains fixed at the origin. What is the kinetic energy of the particle at the instant it has moved 40 cm if (a) Q ? ?20 mC and (b) Q ? ?20 mC?

A mass of 8 kg rests on a floor with a coefficient of static friction of 0.88 and coefficient kinetic friction of 0.33. One force is applied vertically downward of 28 Newtons and another force is applied at an angle of 26 degrees below the horizontal. Calculate what the magnitude this force needs to be in order to begin to move the mass. If that force is removed and another force is applied at an angle of 26 degrees above the horizontal (the downward force is still there), calculate the force needed to begin to move the force for that situation. How much more force is needed to begin the mass, in Newtons, when the force is angled below the horizontal compared to above the horizontal?

explain how the magnetic field enables the three phenomena below

magnetic field

1 low oxygen concentration

2 reducing impurity

3 maintaining stability of melt surface for dislocation free growth

What happens to the mass of an object as it is accelerated? Why can’t objects travel faster than the speed of light?

What is meant by spectroscopy in modern physics? Give an example of an experimental result

1 Write down the expressions for centripetal force and angular momentum

2 What are the units of moment of inertia?

3 In Fig.1 show that the tension, T, in the string causing the pulley to rotate is given by

T = m(g-a)

where a is the linear acceleration of the falling mass.

4 In part III, what factors could cause the angular momentum not to be conserved?

A fan is designed to last for a certain time before it will have to be replaced (planned obsolescence). The fan only has one speed (at a maximum of 675 rpm), and it reaches the speed in 3.0 s (starting from rest). It takes the fan 7.0 s for the blade to stop once it is turned off. The manufacturer specifies that the fan will operate up to 1 billion rotations.

Andre lives in a hot climate, works outside of the home from approximately 8:00 am to 5:00 pm, Monday through Friday, does not own an air conditioner, and can't sleep with the fan running. Estimate how many hot days ? hot Andre will be able to use the fan, rounded to the nearest day.

N hot = ? days

1. A contact lens and a sewing needle are pretty much the same weight. Why is one of these a lot more comfortable resting on your eye? Ah! ?? (everyday life)

2. Write what you remember about Pascal's principle without reading anything. Now go see how right you are!

3. How many 1/4 pound burgers do we need to stack on a table that is 1 meter by 1 meter to be the equivalent of 1 atmosphere? How many starving pygmy vampire bats would this feed for a light year?

4. A pipe contains an incompressible fluid. At some point along its path the pipe doubles in diameter. How does this affect the velocity of the fluid inside?

5. Picture of a cubic meter of water. How much do you think it weighs? Find the density of water then find the mass of a cubic meter of water and then multiply by gravity to see how close you were!

6. Do the same thing for a backpack of gold.

7. Which direction does a buoyant force point?

8. Compare the buoyant force and the weight for an object that sinks and floats.

9. What does the buoyant force for a submerged object depend on?

TYPE with KEYBOARD, please

What is the purpose of Conservation of linear momentum experiment?

And what is the theory of Conservation of linear momentum experiment? Write a paragraph on elastic and inelastic collision. Include related equations as well

2 identical speakers are in phase with eachother, at the same position on the x-axis, and both have a wavelength of 3 meters. They are seperated from eachother on the y-axis by a distance of 6 meters. While an observer maintains a constant position on the y-axis, determine the locations on the x-axis where the observer could relocate theirself where the sound intensity is at a minimum. The provided answers are 11.25 meters and 1.75 meters; however, I am unsure how to actually solve this problem. This is from the interference and diffraction chapter of my optics and thermodynamics course.

A locomotive is accelerating at 1.6 m/s2 as it passes through a 30-m-wide crossing. After the locomotive leaves the crossing, how much time is required until its speed reaches 40?