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You have just been given a 3X magnifying lens as a present. Magnifying glasses arc often use to burn ants on a sunny day.
1) If the focal length of the lens is 6, how far from the ant should the lens be held?
2) If instead you use the magnifying glass to examine a small object, what is the correct objects distance to obtain the stated magnification?
3) How far away does the image appear to you?
A 3.0 mW laser produces a beam of light with a diameter of 2.6 mm shines its light on a perfectly absorbing surface. What is the radiation pressure exerted by the beam
The two stars in a binary star system have masses 2.2×1030 and 6.5×1030 . They are separated by 2.1×1012 .What is the system's rotation period, in years? What is the speed of the lightest star? What is the speed of the heaviest star?
The semiconductor chip at the heart of a personal computer is a square 4 mm on a side and contains 109 electronic components. What's the size of each component, assuming they're square
A 2.0-kg ball is attached to the end of a 2.5-m string to form a pendulum. This pendulum is released from rest with the string horizontal
You are driving at a speed of 25m/s eastward along a levelroad at night. Suddenly you see the shining eyes of a deer standingin the road way ahead. what was the average acceleration applied by your brakes
Consider the design of a solar-powered alternate power generation infrastructure that could maintain sufficient electrical power to meet current US annual demand.
A uniform rod of mass 3.35×10?2kg and length 0.430m rotates in a horizontal plane about a fixed axis through its center, What is the angular speed of the rod after the rings leave it
an object is launched vertically down into an unknown liquid. the initial velocity is 60.0 ms. the drag causes the
A circular loop of wire has 80 turns and an area of 0.340m2. It carries a current of 2.20A. Calculate the magnitude of the torque on the current loop
What length in meters would be needed for a runaway
A 50-kg pole vaulter running at 14 m/s vaults over the bar. Her speed when she is above the bar is 1.7 m/s. determine her altitude as she crosses the bar
1.nbspnbspnbspnbspnbsp to analyze a series ac circuit containing an inductor l and a resistor r using ohms law and
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