FST 215 Chapter 4 Review Questions

Review | Constants

Pressurized eyes Our eyes need a certain amount of internal pressure in order to work properly, with the normal range being between 10 and 20 mm of mercury. The pressure is determined by a balance between the fluid entering and leaving the eye. If the pressure is above the normal level, damage may occur to the optic nerve where it leaves the eye, leading to a loss of the visual field termed glaucoma. Measurement of the pressure within the eye can be done by several different noninvasive types of instruments, all of which measure the slight deformation of the eyeball when a force is put on it. Some methods use a physical probe that makes contact with the front of the eye, applies a known force, and measures the deformation. One non-contact method uses a calibrated “puff” of air that is blown against the eye. The stagnation pressure resulting from the air blowing against the eyeball causes a slight deformation, the magnitude of which is correlated with the pressure within the eyeball.…

1) Forgetting the fact that it would be difficult to detect, if you turn on any electrical device in your car (such as air conditioner blower, headlights, or even the radio) then additional gasoline is burned by the engine.  This statement is  a) always true. b) true only if the car's engine is running while the electrical device is on. c) true only if the car's engine is stopped while the electrical device is on. d) never true. The energy for electrical devices in your automobile has nothing to do with the amount of gasoline your engine burns. e) true in conventional cars, but not in hybrid electric cars.

Questions 1. To increase his speed from 20 km/h to 30 km/h, the cyclist must produce an additional 90 watts of power. Using the graph, determine the increase in power required to increase the speed from 50 km, What can you conclude about the type of relationship based on this result? 2. What other factors should be considered when determining the amount of power required to cycle at a certain speed? from 50-60km

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Shannon’s Law Arizona statutes were changed in 2000 concerning the use of firearms. The statute was named after a fourteen-year-old girl, Shannon Smith in Phoenix, Arizona who was killed by a stray bullet in June 1999. Shannon’s law was only a misdemeanor until the statutes changed in 2000. It is now a felony to discharge a firearm randomly into the air.  No arrests were ever made for the death of Shannon Smith. She was standing in the middle of the back yard talking on her cell phone when a stray bullet went through the top of her head and killed her. Q: A number of injuries and deaths have been attributed to celebratory gunfire both in the U.S. and worldwide. In the state of Arizona, one such tragic incident led to the death of an eighth-grade student as described in the accompanying graphic. if you model the round that struck Shannon as a lead sphere 9mm in diameter (a common handgun caliber) and accounting for buoyant force: Calculate the probable velocity of the round that caused…

The Weather Monitor. Your South American expedition splits into two groups: one that stays at home base, and yours that goes off to set up a sensor that will monitor precipitation, temperature, and sunlight through the upcoming winter. The sensor must link up to a central communications system at base camp that simultaneously uploads the data from numerous sensors to a satellite. In order to set up and calibrate the sensor, you will have to communicate with base camp to give them specific location information. Unfortunately, the group's communication and navigation equipment has dwindled to walkie-talkies and a compass due to a river-raft mishap, which means your group must not exceed the range of the walkie-talkies (3.0 miles). However, you do have a laser rangefinder to help you measure distances as you navigate with the compass. After a few hours of hiking, you find the perfect plateau on which to mount the sensor. You have carefully mapped your path from base camp around lakes and…

QUESTION 14 Match the following accordingly v First law of thermodynamics A. helps to detect the violation of the second law of thermodynamics. Second law of thermodynamics B. Consider the direction, quality and quantity. c. helps to detect the violation of the first law of thermodynamics. D. accounts for energy conservation in a process E. violates the first law of thermodynamics F. does not violate the first law of thermodynamics A cup of coffe left to cool in a cooler room entropy

Question 2 You are a biomedical engineer working for a small orthopaedic firm that fabricates rectangular shaped fracture fixation plates from titanium alloy (model = "Ti Fix-It") materials. A recent clinical report documents some problems with the plates implanted into fractured limbs. Specifically, some plates have become permanently bent while patients are in rehab and doing partial weight bearing activities. Your boss asks you to review the technical report that was generated by the previous test engineer (whose job you now have!) and used to verify the design. The brief report states the following... "Ti Fix-It plates were manufactured from Ti-6Al-4V (grade 5) and machined into solid 150 mm long beams with a 4 mm thick and 15 mm wide cross section. Each Ti Fix-It plate was loaded in equilibrium in a 4-point bending test (set-up configuration is provided in drawing below), with an applied load of 1000N. The maximum stress in this set-up was less than the yield stress for the…

You drop a rock from a cliff. If air resistance is neglected, which of the following statements is (are) true? The speed of the rock will increase. The speed of the rock will decrease. The acceleration of the rock will increase. The acceleration of the rock will decrease.

Help!!! Answer all correctly! Please

Help!!! Please answer all Correctly!!! Please

2 Your friend is planning to ride his bike up a ramp and land on the roof of a building as shown below. The building is 6.00 m high and 8.00 m away from the ramp. The ramp is 3.00 m wide and 4.00 m tall. 4.00 m 1 ← 3.00 m 6.00 m 8.00 m A. What is the minimum speed with which your friend needs to leave the ramp in order to land on the building? B. Another friend is going to use his motorized scooter for the same stunt. The maximum speed of the scooter is 15.0 m/s. How close to the building should you move the ramp so that your friend lands on the roof right at the front edge of the building?

True or False 1. It is acceptable to use a hoist to lift something that weighs more than the rating on the hoist when the load is lifted carefully. 2. Typically, combustible material accidents occur at higher temperatures while flammable material accidents occur at room temperature. 3. Water reactive chemicals include calcium carbide, cyclooctene, metal hydrides, and metals like sodium and potassium. 4. When driving material lifting equipment, workers should maintain at least a 5-foot clearance from overhead power lines. 5. Workers should use at least 2 straps placed equally from the center when lifting a long I-beam. ******************************************************************************************** Multiple Choice 1. Which of the following chemicals is not considered a liver toxin? A. Glacial acetic acid B. Carbon Tetrachloride C. Ethanol D. Trichloroethylene 2. Which of the following is a safety practice intended to protect workers from a lightning strike? A. Use a metal…

Problem Statement A heat engine draws 14 kW of heat from a reservoir at 900 K. The work it produces drives a refrigerator which produces a refrigeration capacity of 12 kW. Both devices reject heat to a reservoir at 300 K. What is the lowest possible temperature of the space cooled by the refrigerator? Answer Table Correct Stage Description Your Answer Answer * 1 Lowest temperature of cold space (K) Due Date Grade (%) Part Weight Attempt Action/Message Type Nov 7, 2024 11:59 pm 0.0 1 1/5 Submit