does accleration increase down an inclined plane

Estimatethe total entropy change when 100.g of liquid water, initially at 298 K and 0.50 atm,is first heated to boiling at 373 K and 1.00atm, and the steamcollected at 1.00 atmsubsequently heated and compressed to 500Kand20.atm. UseDHvap(at 100 ̊C, 1 atm)= 40.6 kJ/mol and the following values for the heat capacity:CP,m(H2O,l) = 75.2 J/(K mol), CP,m(H2O,g) = 35.0J/(K mol)

Describe, in detail, what would happen if you fell into a black hole, from both your perspective, and the perspective of someone who is watching you fall in. You should include specific effects, including effects on space, time, and what you would see.

For hydrogen, an ionized helium ion He⁺, and a doubly ionized lithium ion Li²⁺, calculate:

(a) The radii of the first and second Bohr orbits and the velocities of electrons in these orbits.

(b) The binding energy of an electron in their ground states.

(c) The first excitation energy and the wavelength of their resonance lines.

An electric vehicle starts from rest and accelerates at a rate of 2.4 m/s² in a straight line until it reaches a speed of 27 m/s. The vehicle then slows at a constant rate of 1.4 m/s² until it stops. (a) How much time elapses from start to stop? (b) How far does the vehicle move from start to stop?

A retaining wall against a mud slide is to be constructed by placing 1.2 m-high rectangular concrete blocks (ρconcrete = 2700 kg/m3 ) side by side, as shown in Figure 1. The friction coefficient between the ground and the concrete blocks is f = 0.3, and the density of the mud is about 1800 kg/m3 . There is concern that the concrete blocks may slide or tip over the lower left edge as the mud level rises.

a) Determine the minimum width w of the concrete blocks at which the blocks will overcome friction and start sliding. Plot the results over the mud height ranging from zero to the top of the retaining wall in 0.2 m-increments.

b) Determine the minimum width w of the concrete blocks at which the blocks will tip over. Plot the results over the mud height ranging from zero to the top of the retaining wall in 0.2 m-increments in the same graph as a).

c) Briefly comment on the results.

On level ground a shell is fired with an initial velocity of 36.0 m/s at 58.0 ∘ above the horizontal and feels no appreciable air resistance. ((INCLUDE ALL ANSWER WITH THE UNITS LIKE m/s OR WHATEVER)) THANK YOU

A) Find the horizontal and vertical components of the shell's initial velocity.

B) How long does it take the shell to reach its highest point?

C) Find its maximum height above the ground.

D) How far from its firing point does the shell land?

E) At its highest point, find the horizontal and vertical components of its acceleration.

F) At its highest point, find the horizontal and vertical components of its velocity.

Use your own words to answer the following questions. Please no handwriting.

Determine what conditions should be considered when implementing passive vs. active cooling techniques.

Describe the advantages of absorption cooling that occurs in a solar cooling system.

Describe two equipment requirements and limitations that must be considered in the analysis and design of solar powered absorption systems.

What are the disadvantages of desiccant solar cooling systems?

Industrial espionage on a distance planet (temperature and atmosphere is unknown) provides the information that successive resonances in a pipe are 210 and 294 Hz. The pipe is 5 m long, but it’s not known whether or not the pipe is open at both ends or only at one end. What is the pipe’s fundamental resonance frequency? The answer is 42Hz

A thin film suspended in air is 0.400 µm thick and is illuminated with white light incident perpendicularly on its surface. The index of refraction of the film is 1.58. At what wavelength will visible light that is reflected from the two surfaces of the film undergo fully constructive interference?

Astronauts on a distant planet toss a rock into the air. With the aid of a camera that takes pictures at a steady rate, they record the height of the rock as a function of time as given in the table below. (Do the following in a computer spreadsheet or programming environment. Your instructor may ask you to turn in this work.)

(a) Find the average velocity of the rock in the time interval between each measurement and the next.

(b) Using these average velocities to approximate instantaneous velocities at the midpoints of the time intervals, make a graph of velocity as a function of time.

(c) Does the rock move with constant acceleration?

Yes or No?   

If so, plot a straight line of best fit on the graph and calculate its slope to find the acceleration. (If not, enter 0, and "no direction".)

two stationary positive point charges, charge 1 of magnitude 3.70nC and charge 2 of magnitude 1.50nC , are separated by a distance of 39.0cm . An electron is released from rest at the point midway between the two charges, and it moves along the line connecting the two charges. What is the speed vfinal of the electron when it is 10.0cm from charge 1?

Please show all steps

Consider two coherent monochromatic sources of light of wavelength (lambda) centered at the origin and located at (0, 0,-d) and (0,0,+d). Show that the locus of points, satisfying either the condition for constructive or destructive interference, form a family of hyperboloids of revolution (one for each value of m) with the foci located at the sources. Do this by deriving the equation for the hyperboloid of revolution in Cartesian coordinates (1pt) and locating the focus points (0.5pts). Additionally, what does the surface look like for constructive interference when m=0? Prove your answer (0.5pts). You are not allowed to skips steps by using Wolfram or any other math software (in other words don�t skip important steps).

To be rescued from the roof of a burning building, a62-kg man must be able to jump straight up and catch hold of a rope ladder hanging from a helicopter. He has to raise his center of mass2.00 m above the roof to do so.

If he crouches down such that his center of mass is 0.50 m above the roof and his feet leave the roof when his center of mass is 1.05 m above the roof, what minimum force must he exert on the roof to reach the ladder?

A typical candy bar contains about Ecandy = 900 kJ of food energy. How many candy bars does this jump require?

Neglecting any drag, describe the energy transfers and transformations involved when a yo-yo is thrown downward, reaches the end of the string, and then climbs back up the string to be caught. If you add back in drag, what, if anything, changes?