Fabricate a uniform wire
Suppose you wish to fabricate a uniform wire out of 2.6 g of copper. If the wire is to have a resistance of R = 0.25 and if all of the copper is to be used, what must be the length of the wire in m and the diameter of the wire in mm?
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A 2.30-kg object attached to a spring moves without friction (b = 0) and is driven by an external force given by the expression F = 3.40sin(2pi*t), where F is in newtons and t is in seconds. The force constant of the spring is 35.0 N/m. (a) Find t
At one instant a bicyclist is 36.0m due east of a park's flagpole, going due south with a speed of 12.0m/s. Then 38.0s later, the cyclist is 36.0m due north of the flagpole, going due east with a speed of 12.0 m/s. For the cyclist in the 38.0s int
During a hard sneeze, your eyes might shut for 0.59 s. If you are driving a car at 95 km/h during such a sneeze, how far does the car move during that time?
A projectile is fired horizontally from a gun that is 33.0 m above flat ground, emerging from the gun with a speed of 130 m/s. (a) How long does the projectile remain in the air? (b) At what horizontal distance from the firing point does it strike
Suzie (of mass 50 kg) is roller-blading down the sidewalk going 20 miles per hour. She notices a group of workers down the walkway who have unexpectedly blocked her path, and she makes a quick stop in .5 seconds. What is Suzie's average accelerati
A potential difference of 86 mV exists between the inner and outer surfaces of a cell membrane. The inner surface is negative relative to the outer surface. How much work is required to eject a positive sodium ion (Na+) from the interior of the c
Two 10-rm cm-diameter charged disks face each other, 18 cm apart. Both disks are charged to - 50 nC. What is the electric field strength a point on the axis 5.0 rm cm from one disk between them?
A pair of 10 {rm mu F} capacitors in a high-power laser are charged to 1.7 {rm kV}. What charge is stored in each capacitor? How much energy is stored in each capacitor?
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