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An aluminum rod is 22.0 cm long at 20°C and has a mass of 350 g. If 14,000 J of energy is added to the rod by heat, what is the change in length of the rod?
mm
You look directly overhead and see a plane exactly 1.2·km above the ground, flying faster than the speed of sound. Find the angle of the shock wave cone
A catapult on a cliff launches a large round rock towards a ship on the ocean below. calculate the value of the angle theta
The ems of an AC circuit has an rms value of 120V. What is the maximum positive emf
A charge +7.4 %u03BCC is placed at the center of the hollow spherical conductor with the inner radius 3.2 cm, What is the total charge on the interior
The figure below shows a mercury barometer. Consider two barometers, one using mercury and another using an unknown liquid. estimate the density of the unknown liquid
Draw a careful diagram of the set up of the reference point method of finding an image. explain how you found the object and image distances
A car dealer claims that his product will accelerate at a constant rate from rest to a speed of 200 km/hr in 8s. What estimated distance will the car travel.
A sound source emits sounds of frequency 210Hz that travel by still air at 340m/s. The listener moves at 75 m/s relative to still air toward the stationary source. What is wavelength of the sound between the source and the listener.
On July 15, 2004, NASA launched the Aura spacecraft to study the earth's climate and atmosphere, How many hours does it take this satellite to make one orbit
A father racing his son has 2/3 the kinetic energy of the son who has 2/3 the mass of the father. What is the origianal speed of the father
Calculate the radius of its ground-state orbit, Calculate the energy of the electron in the ground state of double ionized lithium
A set of coupled pendula has m = 0:2kg for both masses, but k and l are unknown. At t = 0, the left hand mass is held at xL = 2:5cm and the right hand mass is held at xR = 0, Find the approximate values of k and l
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