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If a piece of photographic film is placed at the location of a real image, the film will record
the image. Can this be done with a virtual image? How might one record a virtual image?
A spherical air bubble in water can function as a lens. Is it a converging or diverging lens?
How is its focal length related to its radius?
The bottom of the passenger-side mirror on your car notes, “Objects in mirror are closer than they appear.” Is this true? Why?
You may have noticed a small convex mirror next to your bank’s ATM. Why is this mirror
convex, as opposed to flat or con- cave? What considerations determine its radius of curvature?
the cubic expansivity of all gases at constant temperature is 1/2 73k. if a given mass of gas is held at 0C is 300cm^3, at what temperature does its volume becomes 400 cm^3?
A KTM commuter train travels between two stations, A and B. The train starts from rest from station A and accelerates at a constant rate for 0.5 km until it reaches a speed of 30 m/s. It then travels at this constant speed for T s before decelerating at a constant rate of 1.5 m/s2 and coming to rest at station B. Figure 1 shows the velocity-time graph of the train’s journey between the two stations. Determine the value of T if the distance between the two stations 6 km. Calculate also the total time taken for the whole journey.
A ball with a mass 0.5 kg is dropped from a height of 10 m to the ground and bounces back to a height of 7m. How much potential energy does the ball lose
How much work is done on the block if a 10.0 kg block was accelerated at 5.0 m/s2 with a distance of 2.5 m across a frictionless table?
Determine the mass of a moving object with a velocity of 35 m/s and a kinetic energy of 58 J.
Four point charges are equally separated by 1.00 m in air. If q1=3.0nC, q2=2.0nC, and q4=-5.0nC. What is the electric field at a point halfway between q2 and q3?
#333702 on Dec 2022