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Q1. A rock is throwing from a tall building. The rock reaches its maximum height above the top of the building 1.77 s after being shot. Then, after barely missing the edge of the building as it falls downward, rock strikes the ground 10.0 s after it is launched. In SI units: (a) with what upward velocity is the rock shot, (b) what maximum height above the top of the building is reached by the rock, and (c) how tall is the building?
Q2. John, a 76-year-old grandfather, had been smoking heavily for 26 years and had a persistent cough. A biopsy of his lung tissue revealed considerable amounts of carbon particles. How might this happen considering the natural cleaning mechanism of the respiratory system?
A nearsighted student with a far point of 6.30 m wears contacts that allow him to see distant objects clearly. determine image distance for the tree
A ball is thrown downward of a 50 meter high building with a speed of 10 m/s. In what height do the balls meet
In an RLC circuit, the following three elements are connected in series: a resistor of 45.0 ?, a 21.0-mH inductor, and a 0.450-µF capacitor. Find the power factor for the RLC series circuit
A 66-g ice cube at 0°C is placed in 865 g of water at 26°C. What is the final temperature of the mixture
A spaceship is measured to be 158 m long while at rest relative to the observer. what length does the observer measure
A 4.50 kg package slides 1.30 m down a long ramp that is inclined at 10.8° below the horizontal. Calculate the work done on the package by gravity
A zone plate is to be set up on an optical bench , where it will be used an an enlarging lens. find the focal length of the zone plate
Electric charge is uniformly distributed inside a nonconducting sphere of radius 0.30 m. find the maximum magnitude of the electric field
The focal length of a relaxed human eye is approximately 1.71 cm, Calculate the focal length of the eye when we focus closely
A 0.07-kg lead bullet traveling 296 m/s strikes an armor plate and comes to a stop. If all of the bullet's energy is converted to heat that it alone absorbs
A little league player balances a bat 57.0 cm from one end. She then hangs her 0.540-kg batting helmet on that end of the bat, Determine the mass of the bat
Two charges, +q and -q, are located in the x-y plane at points (0,+d/2) and (0,-d/2), respectively. Calculate the magnitude of the electric field at point P with the superposition principle
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