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Consider a two lens system by focal length +10 and +5 separated by 12 cm. locate the image of an object 50 cm from the +10 cm lens. What is its magnification? Is the image real or virtual?
A hotel elevator ascends 160 with a maximum speed of 4.6 . Its acceleration and deceleration both have a magnitude of 1.1. How long does it take to make the complete trip from bottom to top
Two freight cars, each with a mass of 2.4 multiplied by 105 kg, collide and stick together. One was at first moving at 3.4 m/s and the other was at rest. What is their final speed.
Four identical metallic objects carry the following charges: +1.79, +6.21, -4.16, and -9.41C. The objects are brought simultaneously into contact, What is the final charge on each object
How long does it take for amplitude to drop to half its initial value . How long does it take for mechanical energy to drop to half its initial value.
The resistor has a value of 10ohms, and the capacitor is 500uF. Calculate the time constant of the circuit. What is the voltage across the capacitor after the switch has been closed for one time constant
Find the lower limit for the change in specific entropy of dry air at a given temperature and pressure which is allowed to expand freely into an insulated chamber to assume twice its original volume.
A bolt on an engine is to be tightened with a maximum torque of 75 Nm. If a wrench has a length of 0.30 m, what is the maximum force perpendicular to the length that should be used to tighten the bolt?
a solar pv module consists of four strings of silicon solar cells in parallel with each string having 20 cells in
Two 10-cm-diameter charged rings face each other, 24.0 cm apart. Both rings are charged to + 20.0 nC. What is the electric field strength at the midpoint between the two rings and at the center of the left ring?
A bus makes a trip according to the position time graph shown in the drawing. Find the average velocity (magnitude & direction) of the bus during each of the segments labelled A, B, & C?
if the distance from the sun varied during our asteroids orbit would its kinetic energy change? would its potential
The distance to a point source is decreased with a factor of three. Suppose that the sound is emitted by the source uniformly in all directions. By what additive amount does the intensity level increase?
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