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Q1. A person working on the transmission of a car accidentally drops a bolt into a tray of oil. The oil is 5.00 cm deep. The bolt appears to be 3.40cm beneath the surface of the oil, when viewed from directly above. What is the index of refraction of the oil?
Q2. A hotel elevator ascends 240 m with a maximum speed of 5.8 m/s. Its acceleration and deceleration both have a magnitude of 1.0 m/s2.
While a roofer is working on a roof that slants at 39.0 degrees above the horizontal, he accidentally nudges his 93.0 N toolbox, causing it to start sliding downward, starting from rest.
As part of a safety investigation, two 1200 {rm kg} cars traveling at 24 {rm m/s} are crashed into different barriers. Find the average forces exerted on (a) car that hits a line of water barrels and takes 1.80 {rm s} to stop, and (b) car that hits a..
Quadrupole moments in the shell model
Calculate the time constant that is equal to the time taken by a capacitor to fully charge or discharge.
What is torque exerted by the fish about an axis
What would be the potential difference VC - VB across the thin resistor if the battery emf is 4.00 volts? Suppose that the electric field in the thick wires is very small (so that the potential differences along the thick wires are negligible)
A projectile is launched at some speed at an angle of 74 degrees and travels a range of 262 meters. The launch angle is after that changed, but the projectile is fired at the same speed as the original case and also travels the same range of 272 m..
An 80 driver gets into an empty taptap to start the day's work. The springs compress 1.8×10-2. What is the effective spring constant of spring system in the taptap.
A flight attendant pulls her 72.0 N flight bag a distance of 282 m along a level airport floor at a constant speed. The force she exerts is 33.0 N at an angle of 52.0° above the horizontal.
A spring with spring constant 14 hangs from the ceiling. A ball is attached to the spring and allowed to come to rest. It is then pulled down 3.0 and released. The ball makes 17 oscillations in 16 seconds. What is it the mass of ball.
What is magnitude of the momentum
A football spends a total of 5 seconds in the air. It reaches a peak height of 30 meters. How long does it take to reach its peak height? The football has the range of 90 yards. What is its horizontal velocity.
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