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A converging lens can be used as a lighter (on a sunny day). If you want to use it to light a match, where should you put the match? (The focal length is 24.2 cm.) cm behind the lens A concave mirror can be used as a lighter too. When put 32.4 cm in front of the mirror, the match is lighted. What is the radius of the mirror? Cm.
A horizontal aluminum rod 4.8 cm in diameter projects 5.6 cm from a wall. A 1200 kg object is suspended from the end of the rod. Find the vertical deflection of the end of the rod
Net horizontal force due to rolling friction
A roller-coaster car moves 198 ft horizontally and then rises 143 ft at an angle of 30° above the horizontal. It then travels 143 ft at an angle of 40° downward
What is magnetic flux through the desk surface
determine the minimum magnetic field.
In a phyiscs lab experiment, a coil with 200 turns enclosing an area of 13.7cm2 is rotated during the time interval 3.7E-2 from a position, What is the magnitude of the total magnetic flux
Three resistors, 23, 45, and 73 ?, are connected in series, and a 0.55-A current passes through them. (a) What is the equivalent resistance? (b) What is the potential difference across the three resistors?
Amazingly, at exact distance that you calculated in question 2a (73.5 meters), there was a trampoline! Thinking quickly, I orient myself appropriately and hit the trampoline.
write down the equations expressing conservation of momentum for the components in the x and y directions separately.
Two mirrors meet at a 127° angle. If light rays strike one mirror at 40° as shown, at what angle ? do they leave the second mirror.
present an explanation of why you selected each activity and how it can contribute to the prenatal, postpartum, and future development of each woman's child.
A rescue helicopter lifts a 90-kg person straight up by means of a cable, What is the tension in the cable and How much work is done by the tension in the cable
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