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An object is placed to the left of a convex lens and on the optical axis. The object is 38 cm from the lens and the focal length of the lens is 53 cm. What is the magnification of the image formed by the lens? You do not have to enter units for this problem.
Order of magnitude estimation: Using physics intuition, estimate the muzzle velocity of a projectile launcher
What was the bullet's speed as it left the barrel. A 1kg block rests against one end of a horizontal spring which is compressed by 10 $cm$.
The ball strikes the floor at a speed of 7.8 m/s. Illustrate what was the initial speed of the ball? Assume that air resistance is negligible.
A 0.38 kg iron horseshoe that is initially at 580°C is dropped into a bucket containing 21.8kg of water at 21 °C. What is the final equilibrium temperature (in °C)? Avoid any heat transfer to or from the surroundings. Do not enter units.
A cube of side 2cm is made of material of bulk modulus 4.7\times 10^{^{5}} N/m^2. What is the new length of each of its sides
A spring of stiffness 25 kN m-1 is compressed by an initial load of 5 kN, gradually applied, What is the total work done on the spring
A boy coasts down a hill on a sled, reaching a level surface at the bottom with a speed of 6.9 m/s. how far does the sled travel on the level surface before coming to rest
An iceberg floating in seawater as shown below in Figure, is extremely dangerous because much of the ice is below the surface. What fraction of the iceberg lies below the water level
In a television picture tube, electrons strike the screen after being accelerated from rest through a potential difference of 32000 V. find the electron speed just before the electron strikes the screen
Two speakers, one directly behind the other, are each generating a 152-Hz sound wave. What is the least separation distance between the speakers that will produce destructive interference at a listener standing in front of them.
Red light of wavelength 633nm from a helium-neon laser passes through a slit 0.350mm wide. The diffraction pattern is observed on a screen 3m away.
A small, 1.70-mm-diameter circular loop with R = 1.30×10?2? is at the center of a large 100-mm-diameter circular loop. Both loops lie in the same plane
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