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You have a 89.7-mF capacitor initially charged to a potential difference of 10.7 V. You discharge the capacitor through a 4.01-Ω resistor. What is the time constant? After what multiple of the time constant does the potential difference reach 1.07 V?
liquid water at 20 degrees c has a constant pressure mass specific heat of cp4181.8. suppose that 1kg of liquid water
A channel and a plate are welded together as shown to form a section that is symmetrical with respect to the y axis. Determine the moments of inertia of the combined section with respect to its centroidal x and y axes. Hint: look online for propertie..
question1a horizontal 800-n merry-go-round of radius 1.20 m is started from rest by a constant horizontal force of 45 n
two trains each having a speed of 30 kmh are headed at each other on the same straight track. a bird that can fly 60
A cannon is aimed at an angle of 30 degrees above the horizontal. It fires a cannonball into the direction of a valley with a muzzle velocity of 100m/s. What is the maximum height of the ball
The tank is shelling at a target that is 4km away and 60m above ground. If the shell is being fired at 30degrees above the horizontal, determine the release speed of the shell
Students in a fraternity house want to be able to spray water 25 m across their neighbor's yard onto a patio. What size nozzle do they need
Blood is a viscous fluid. If due to plaque, the cross-sectional area of an artery is reduced by a factor 6 over a segment with a length of 0.5 cm, approximately by what factor would the pressure difference between both ends of this segment need to be..
A 2.50g bullet, travelling at a speed of 395m/s, strikes the wooden block of a ballistic pendulum. The block has the mass of 265g. How high does the combination rise above its initial position.
A 2.4 kilogram ball falling vertically hits the floor with a speed of 2.5m/s and rebounds with a speed of 1.5m/s. Find the magnitude of the impulse exerted on ball by floor
An uncharged capacitor and a resistor are connected in series to a source of emf. If emf = 6.00 V, C = 21.0 µF, and R = 100 ?, evaluate the maximum charge on the capacitor
question a single isolated conductor can store charge. we can define its capacitance as the ratio of the charge to the
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