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A ball rolls off the top of stairway with a horizontal velocity of 2.0m/s. The steps are each 20.0cm high and 20.0cm wide. Which step will the ball hit first? Note change cm to m.
A 3.16μF capacitator is chargedby a 13.0 V battery. It is disconnectedfrom the battery and then connected to an uncharged 3.58μF capacitator.
A small rock with mass 0.12 is fastened to a massless string with length 0.80 to form a pendulum, find the tension in the string as it passes through the vertical
If you double a blackbody's temperature, by what factor does its radiated power increase
The ink drops have a mass = 1.0×10-11 each and leave the nozzle and travel horizontally toward the paper at velocity = 22. The drops pass through a charging unit that gives each drop a positive charge by causing it to lose some electrons.
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
An alloy is made of 30% gold, 20% silver and iron. The specific heats of gold, silver and iron are 0.0308, 0.056 and 0.107 cal/go C, respectively. Calculate the specific heat of the alloy
When two resistors are connected in a parallel configuration the voltages across each are the same, What are the currents through these resistors
A person who weighs 715 N is riding a 98-N mountain bike. Suppose the entire weight of the rider and bike is supported equally by the two tires. estimate the area of contact between each tire and the ground
a 56kg student runs at 5.0 m/s, grabs a hanging rope, and swings out over a lake (as shown). He releases the rope when his velocity is zero, draw the FBD of the student on the rope
area ratio. i know that at a temperature of 3000k the power was 4.59 x106 wm2 and at 6000k the power was 7.35 x107 wm2
assume the earth's average temperature is 10 degrees C. Venus is hit by a meteorite and a cloud of dust surrounds the sun. What will in (in centigrade) the new temperature of the earth
A 4.0cm tall apple is 20cm in frount of a plano-convex lens of focal length 75cm. Find the location of the image of the apple
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