Physics question and answers for September 01, 2023
- Q (a) What is the advantage and disadvantage images fromradioactivity compared imaging from ultrasound, x-ray and CT?(b)Explain in detail the operation of a PET scanner,illustrating your points by using more than...
- Q Please post answers in excel showing all formulas used.Refer to the gasoline sales time series data in the giventable.WeekSales (1000s of gallons)118221319422518616720819923101911161222Compute four-week and five-week moving averages for the timeseries....
- Q One of the many isotopes used in cancertreatment is gold 19879Au, with a half-life of 2.70 days.Determine the mass of this isotope that is required for an activityof 200 Ci.I...
- Q A 31 g ice cube at -15.0oC is placed in 139 g of water at48.0oC. Find the final temperature of the system when equilibriumis reached. Ignore the heat capacity of...
- Q Air enters a nozzle steadily at 280 kPa and 77°C with a velocityof 70 m/s and exits at 85 kPa and 320 m/s. The heat losses from thenozzle to the...
- Q Research and then name the fundamental Raman modes of SWCNTs anddescribe briefly their energy and source in the nanotubes.
- Q Two objects undergo an elastic collision. Object 1 has a mass of1.35 kg and object 2 a mass of 3 kg. Just prior to the collision,object 1 has a kinetic...
- Q A mass of 9 kg rests on a floor with a coefficient of staticfriction of 0.92 and coefficient kinetic friction of 0.37. Oneforce is applied vertically downward of 22 Newtons...
- Q The electric potential at aposition located a distance of 22.5 mm from a positive point chargeof 8.20×10-9C and13.0 mm from a second point charge is 1.06 kV. Calculate the valueof...
- Q The space elevator project is an effort that intends to place anelevator system grounded on the Earth into geosynchronous orbit.Carbon nanotubes are the only material strong enough to make thiselevator....
- Q a. Explain what is meant by the barrier potential and how it isformed before any bias is applied. [3 marks] b. When the diode isforward biased: i. What happens to...
- Q Two charges with a (charge) ratio of 1:3 are 30cm apart fromeach other in vacuum (free space).a) How far do both charges need to be placed in water when wewant...
- Q A conducting single-turn circular loop with a total resistanceof 7.50 Ω is placed in a time-varying magnetic field that producesa magnetic flux through the loop given by ΦB = a...
- Q 1) a car battery is rated at 90 amphour. How much charge isavailable in the battery?2) A +2.6 uc point charge is placed at the center of a cube withsides...
- Q Can a person, in principle, travel from Earth to the galacticcenter (which is about 2.30
- Q 1) An evacuated tube uses an accelerating voltage of 44 kV toaccelerate electrons to hit a copper plate and produce X-rays.Ignoring relativistic effects, what would be the maximum speed ofthese...
- Q Complete derivation of the infinite square wellwithout the use of dirac delta functions.Please show every single step.I know this is long but Thanks Alot.
- Q 1. (i) Sketch the relationship between isotherms and heat flowvectors.(ii) The magnitude of the heat flow vector is proportional to thetemperature gradient. Use this to show why a steady-state geothermmust...
- Q Einstein's Theory of General Relativity can beconsidered a \"good theory.\"a) What did this theory explain that other theoriescould also explain?b) What did this theory explain that other theoriescould not explain?c)...
- Q Two trains face each other on adjacent tracks. They areinitially at rest, and their front ends are 33 m apart. The trainon the left accelerates rightward at 1.06 m/s2. Thetrain...
- Q How will voltage and current behave in a circuit with twoadjacent batteries (battery-battery-bulb-bulb)? How does thischange for two non-adjacent batteries(battery-bulb-battery-bulb)?
- Q A toy car with a mass of 120 g moves to the right with a speedof 0.64 m/s. A small child drops a 36.0-g piece of clay onto thecar. The...
- Q Develop an I/O port decoder, using a PLD, that generates 16-bitI/O strobes for the following 16-bit I/O port addresses:1000H-1001H, 1002H-103H, 1004H-1005H, 1006H-1007H, 1008H-1009H,100AH-100BH, 100CH-100DH, and 100EH-100FH.
- Q Consider passwords of length 8 using symbols from the set oflower case letters: {a, b, c, ..., z}.(a) How many such passwords use the letter p exactlytwo times and the...
- Q 12.64A dumbbell has a mass m on either end of a rodof length 2a. The center of the dumbbell is a distancer from the center of the Earth, and the...
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