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A photograph is properly exposed when the aperture is set to f/8 and the shutter speed is 1/110 s. Find the approximate shutter speed needed to give the same exposure if the aperture is changed to f/2.1.
A 9.8 V battery is connected to a bulb whose resistance is 1.4 . How many electrons leave the battery per minute
A thin rod sits along the x axis with one end at x= -1.0 m and the other end at x= 3.6 m. What is the total mass of the rod? Where is the center of mass of the rod located?
A moving sidewalk 95 m in length carries passengers at a speed of .53 m/s. One passenger has a normal walking speed of 1.24 m/s, If she walks at her normal walking speed on the sidewalk, how long does it take to travel the fill length
When a nucleus captures a slow neutron itmust bring the neutron to a stop within the diameter of the nucleusby means of the strong force. Suppose a stray neutron has the speedof 1400 km/s and is barely captured by a nucleus with a diameterd=1.0X10..
A student pushes a loaded sled whose mass m is 240kg for a distance d of 2.3m over the frictionless surface of a forzen lake. if the sled starts from rest, what is its final velocity
Attempting to stop on a slippery road, a car moving at 80 skids across road at a 30 angle to its initial motion, coming to a stop in 3.8.
A bag of cement of mass m is place on plank of length L. Bag is place distance L/4 from right end of plank. Plank has mass m. Determine how much must man nearest bag support
Calculate the resulting charge on capacitor C1.
Five cubic feet of a gas at 90 pisg and 75 degree F are compressed to a volume of 2 cubic feet and the heated to a temperature of 250 degree F illustarte what is the new pressure? (General Ideal Gas Law)
A battery with an emf of 12.0 V shows a terminal voltage of 11.0V when operating in a circuit with two light bulbs rated at 3.0 W (at 12.0 V) which are connected in parallel. What is the battery internal resistance
A particle moves at a constant acceleration along the curve x2 = x1/100 from point A to point B. The velocity of the particle at A is 10 m/sec, and 10 sec later at point B it is traveling at 50 m/sec. Determine the total acceleration of the particle ..
an ac generator has a frequency of 2.2 khz and a voltage of 240 v. an inductance l1 6.0 mh is connected across its
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