Venus is known for its very high surface temperatures, caused by a huge greenhouse gas effect. However, atmospheric density, surface temperature and surface pressure are also very different from Earth’s due to a different atmospheric composition AND much greater depth. The pressure at the surface is 92 x Earth’s (it is 101,000 Pa on Earth), due to the presence of a dense atmosphere with a depth of 20 km to the top of its troposphere (ignoring the impact of very thin gases above the troposphere, just like on Earth). The surface temperature averages 460o C. The mix of gases in the Venusian atmosphere is 96.5% CO2, 3.5% N2. R, Universal gas constant = 8.314 Jmol-1 K-1 . Based on the above information and knowing how to find the atmosphere’s density, calculate g, the acceleration due to gravity on Venus (note: this is NOT a time to use Newton’s laws of gravity!).

1. Briefly describe three different sound processing schemes used to modify received sound signals before they are sent to a cochlear implant.

Please just list the three and a small description of each, thanks!

A small object with mass m, charge q, and initial speed v0 = 6.00×10³ m/s is projected into a uniform electric field between two parallel metal plates of length 26.0 cm (Figure 1). The electric field between the plates is directed downward and has magnitude E = 700 N/C . Assume that the field is zero outside the region between the plates. The separation between the plates is large enough for the object to pass between the plates without hitting the lower plate. After passing through the field region, the object is deflected downward a vertical distance d = 1.35 cm from its original direction of motion and reaches a collecting plate that is 56.0 cm from the edge of the parallel plates. Ignore gravity and air resistance.

Calculate the object's charge-to-mass ratio, q/m.

~Unit C/kg

The magnetic force acting on a moving electric charge is found to be independent of the sign of the charge.

True

False

We place the N magnetic pole of a magnet near the N magnetic pole of a second magnet. We find:

It was discovered that Electric Currents are the source of magnetic fields.

True

False

The Earth N and S magnetic poles are not stable. They are constantly moving in geologic time scales.

True

False

The Galvanometer is an instrument used to detect electric currents that takes advantage of the magnetic effects of currents.

True

False

In an AC to DC rectifier circuit, the output DC signal of the rectified wave was measured to be
V_DC= (6.6±0.6)V and its ripple voltage was measured to be V_ripple=(0.27±0.02) mV. What is the uncertainty on the quality factor of the rectifier?

For any multimedia applications, describe how Quality of Service (QoS) guarantees for available bandwidth, delay, jitter and loss rate with DiffServ and IntServ? Highlight the issues with suitable diagrams.

Ice cubes usually float in a glass of water. If you push the ice cubes down to the bottom of the glass (using a straw), would they cool the water more, or less, quickly? Explain.

A rubber bullet is shot with a speed of 130 meters per second with an angle 67.4 degrees above the horizontal. The ground is 115 meters above from where the rubber bullet was shot.

1. How much time is the bullet in flight?

2. How much time will it take for the bullet to reach max height?

3. How much is the max altitude the bullet can reach>

4. What time is the bullet 425 meters from the ground?

5. What is the range of the bullet?

6. What is the final velocity when the bullet hits the ground?

Compute the average of x and x^2 and determine ∆x for the ground state of the harmonic oscillator. b) Determine the average potential energy and describe how it is related to the total energy?

According to alignment of rods, how can you know what kind of bars are made? Explain by investigating alignment of moments and net magnetization.

an owl m=4.72kg slides down a semi-circular ramp r=7.5m. the owl starts at the top ramp at rest. when the owl is at an angle 31.9. what is the normal force exerted by the owl.

For both resistances, plot the charge curve of ln(1-V/V0) vs. time. From the slope of the line, calculate the C (capacity). Please write your answer as large and neatly as possible.

1) What type of air pollution exists in the cabins of airplanes?

2) Make a list of the pollutants and their possible health effects. How do these pollutants affect the biology of respiration?

3) How seriously are these air pollutants affecting the health of the passengers? How is this affecting the health of the flight crew?

4) How could these pollutants be avoided? Does this represent an unnecessary cost?

5) Overall, is this a serious health problem?

1. Special Relativity: Consider a firecracker that after being triggered explodes after 1 second. An observer A is standing some distance away from observer B who is traveling with constant velocity towards A with the firecracker. The velocity of B and distance between A and B is such that B will reach A in 1 sec as measured by A. At this instant B triggers the firecracker they are holding. Which of following options is correct?

   1. The firecracker explodes exactly when B reaches A

   2. The firecracker explodes before reaching A

   3. The firecracker explodes after crossing A

   4. All the above outcomes are possible

   Explain your answer. Include diagram in your explanation. Hint : this is not about time dilation.