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Q1. Consider a cylindrical segment of a blood vessel 2.9 cm long and 1.70 mm in diameter. What extra outward force would such a vessel need to withstand in the person's feet compared to an alike vessel in her head?
Q2. The concentration of zinc in a rod of brass is maintained at 10 percent at one end of a rod that is 0.01 m long; the other end is maintained at 0% by vaporizing the Zn as it arrives. At 500°C, the diffusion coefficient of Zn in brass is 4.10-17 m2.s-1. What is the flux of Zn moving down the rod? Write down all your assumptions (hint: you will need to look up the density of copper. You do not need to account for the variation in density with alloy composition). Clarify what the boundary conditions were.
A rural power line carries 1.7 A rms at 4700 V. A step down transformer reduces this to 235 V rms to supply a house. Find the turns ratio of the transformer
The place you get your hair cut has two nearly parallel mirrors 7.00 apart. As you sit between these mirrors in the chair, your head is 2.50 from the mirror in front of you. How far away does the back of your head appear to be
Water leaks out of a dam through a small hole 4.2 m below the level of the water behind the dam. Find the speed of the water emerging from the hole
An unstable nucleus of mass 2.9 10-26 kg, initially at rest at the origin of a coordinate system, Find the magnitude and direction of the velocity of the third particle
A proton having an initial velocity of 17.2i hat bold Mm/s enters a uniform magnetic field of magnitude 0.360 T with a direction perpendicular to the proton's velocity. Determine the time interval for which the proton is in the field
If a car travelling at 52 km/h will skid 18 m when its brakes lock, how far-off will it skid if it is travelling at 120 km/h when its brakes lock.
A small sphere with a mass of 1.0 g is suspended at the end of an insulating string of length 50 cm within a uniform horizontal electric eld of 12,000 N/C. What is the value of the charge on the small sphere
A rocket traveling at 0.540c sets out for the star, which is 5.45ly away from earth. It will return to earth immediately after reaching the star. According to the rocket crew how far will the rocket travel
An initially neutral conductor contains a hollow cavity in which there is a -100 nC point charge. what is the charge on the inner wall of the cavity wall
The magnetic field in an electromagnetic wave has a peak value given by B = 3.3uT. Find the peak intensity. Find average intensity
In an amusement park ride called The Roundup, passengers stand inside a 16.0m -diameter rotating ring. how much force does the ring push on her at the top of the ride
A system of 1219 particles, each of which is either an electron or a proton, has a net charge of -6.640×10-17 C. How many protons are in this system (exactly)
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