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Back in the day, professors lectured to students that congregated in the same classroom. If a professor projected 0.7Watts of sound power uniformly in all directions, what is the difference in sound intensity level between two students that sat 4m and 8.6m away from the professor? (Show a step-by-step work process)
Find out in which direction the particle moves and its final velocity when hits one of the spheres. . Use: R = 2.0 cm, -ρ = - 1.0 μC/m3, σ- 60.0 nC/m2, Q = 8.85 μC and m = 0.3 ng.
you throw a ball m 2kg with an initial velocity of 20 ms at an angle of 60 degrees from the top of a 30m cliff. a
An ice-cube tray contains 0.332 kg of water at 18.5C. How much heat must be removed from the water to cool it to 0 degreesC and freeze it? Express your answer in joules
Atomic Hydrogen in the ground state absorbs a photon, raising the electron to the n=3 excited state. Determine the number of classical revolutions the electron makes during the 0.1 ns time interval
A car is driven 165 kilometer west and then 95 kilometer southwest. Obtain the displacement of the car from the point of origin (magnitude and direction)
A cannon is fired from the ground. The cannonball initially travels with a speed of 300 meter per second at an angel of 25o with respect to the ground. Find how far above the ground does the cannonball get to
There are three charges of 5, 5 and -5 micro coulomb at the corners of triangle 10 centimeter in length of each side. Find what is the potential energy of the 10-micro coulomb due to the other three
A 3230-turn solenoid has a radius of 5.79 centimeter and a length of 22.9 centimeter. Calculate what energy stored in it when the current is 0.650 A
Jane, looking for Tarzan, is running at top speed (5.6 m/s) and grabs a vine hanging vertically from a tall tree in the jungle. Estimate how high can she swing upward
Three objects are connected on the table as shown in Figure P5.44. The table is rough and has a coefficient of kinetic frictionof 0.350. find the acceleration of each object and their directions
Explore how the development of the scientific method impacts our worldview. Identify the initial observations that identified the problem,
Why is it important to find new sources of energy?
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