Physics, 08.07.2019 01:30 jamesnaquan132
Here's an interesting challenge you can give to a friend. hold a $1 bill by the upper corner. have a friend prepare to pinch the lower corner, putting their fingers near but not touching the bill. tell them to try to catch the bill when you drop it simply by closing their fingers. it seems easy but it isn't. it would take them about 0.25 seconds to react and close their fingers— which isn't fast enough to catch the bill. how much time does it take for the bill to fall beyond her grasp? the length of the bill is 16cm.
Answers: 2
Physics, 21.06.2019 14:40, shay68596
An implanted pacemaker supplies the heart with 72 pulses per minute, each pulse providing 6.0 v for 0.65 ms. the resistance of the heart muscle between the pacemaker’s electrodes is 550 ω. find (a) the current that flows during a pulse, (b) the energy delivered in one pulse, and (c) the average power supplied by the pacemaker.
Answers: 3
Physics, 21.06.2019 16:30, nyce36
You throw a baseball directly upward at time t = 0 at an initial speed of 12.3 m/s. what is the maximum height the ball reaches above where it leaves your hand? at what times does the ball pass through half the maximum height? ignore air resistance and take g = 9.80 m/s2.
Answers: 1
Physics, 21.06.2019 21:30, AleOfficial101
Aparticle with mass 1.81×10−3 kg and a charge of 1.22×10−8 c has, at a given instant, a velocity v⃗ =(3.00×104m/s)j^. what are the magnitude and direction of the particle’s acceleration produced by a uniform magnetic field b⃗ =(1.63t)i^+(0.980t)j^?
Answers: 2
Here's an interesting challenge you can give to a friend. hold a $1 bill by the upper corner. have a...
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