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A recording engineer works in a soundproofed room that is38.5 dB quieter than the outside. Ifthe sound intensity in the room is 1.10 x 10-10W/m2, what is the intensity outside?
a pumpkin is pushed horizontally at a speed of 2.2 m/s off of a desktop that is 0.8 meters above the floor. how far frome the base of the desk
A heat engine operating between energy reserviors of 119.94 oC, How much energy must this engine extract from the hot reservior to do 1,583.1J of work
A 76kg student consumes 2500 Cal each day and stays the same weight. One day, he eats 3500 Cal and, wanting to keep from gaining weight, decides to "work off" the excess by jumping up and down.
Consider a rectangular loop of wire 6.3 cm by 8.2 cm in a uniform magnetic field of magnitude 1.7 T. What is the average induced emf in the loop
Photons of wavelength 430 nm are incident on a metal. What is the work function of the metal
A football resting on the ground is kicked at an angle of 35.0° towards the uprights with an initial speed of 20.0 m/s
A turbine blade rotates with angular velocity w(t)= 2.00 rad/s - 2.100 rad/s^3 t^2. What is the angular acceleration of the blade at t = 9.1 s
After landing, a jetliner on a straight runway taxis to a stop at an average velocity of -30.0km/h. what are the plane's initial velocity and acceleration
A disk and a hoop of the same mass and radius are released at the same time at the top of an inclined plane. The height of the incline is 0.71 m. find the speed of the hoop at the bottom of the inclined plane
An astronomical telescope has an angular magnification of -144, What is the focal length of the eyepiece
The intensity (in W/m2) of one sound is 7.12 times as great as the intensity of another sound. Relative to the quieter sound
A heavier mass m1 and a lighter mass m2 are 20.0 cm apart and experience a gravitational force of attraction that is 9.00 10-9 N in magnitude. Determine the value of each individual mass
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