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An iron tower in is 550 feet tall on a cold day (T = -9.1 degrees Celsius). What is its final height (total) of the tower on a hot day when the temperature is 30.1 degrees Celsius?
The density of air under standard laboratory conditions is 1.29{\rm kg}/{\rm m}^{3} , and about 20.0\% of that air consists of oxygen. Typically, people breathe about .5 L of air per breath.
Roberto reaches out of a window and tosses a rock straight up with a speed of 19.3 m/s. The ball is 30.6 meter above the ground when he releases it. Calculate the speed of the rock upon impact with the ground
Steam enters a nozzle operating at steady state with p = 40 bar and T =400oC, and a velocity of 10 m/s. Determine the exit area of the nozzle
A rock of mass 34 kg accidentally breaks loose from the edge of a cliff and falls straight down. The magnitude of the air resistance that opposes its downward motion is 248 N. Elucidate what is the magnitude of the acceleration of the rock?
Suppose you throw a stone vertically upward with aninitial speed of 6.0 m/s from an office window. if the window is 12m above the ground, find (a) the time the stone is in flight and(b) the speed of the stone just before it hits theground.
A turntable of mass 5.01 kg has a radius of 0.129 m and spins with a frequency of 0.530 rev/s. What is its angular momentum? Assume the turntable is a uniform disk.
If a 12.90 V potential is applied to the parallel-plate capacitor, calculate the magnitude of the electric field between the plates. find the energy density in the parallel-plate capacitor
what is the minimum height you would have to place a solid ball of mass m and radius r i 2mr2 5 on a hill in order
A ball is dropped from rest from the top of a 6.30-m-tall building, falls straight downward, collides in-elastically with the ground, How many bounces can the ball make
The rotor of an electric motor has rotational inertia Im = 5.12 x 10-3 kg·m2 about its central axis.Calculate the number of revolutions of the rotor required to turn the probe through 31.3° about its central axis
a thin uniformly chargde rod has a length l10cm and a linear charge density lambda 5x106 ecm. e is the change of an
A 150 turn circular coil has a diameter of 2.4 centimeter and a resistance of 60 ohm. evaluate what the current in the coil
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