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A beaker of water rests on an electronic balance that reads 999.0 g. A 2.4 cm-diameter solid copper ball attached to a string is submerged in the water, but does not touch the bottom. Tension in the string is 0.56 N. What is the new balance reading?
100g of ice at -10C is placed into 100g of warm water in an insulated container. Calculate the mass of the ice that remains when equilibrium is achieved
For a double-slit experiment, the inside edges of two 1.73-mm wide slits are separated by a distance of 1.35 mm. find the separation of the bright fringes on the screen
Consider a fish of average size swimming near the bottom of a lake of depth 46 m. What is the water pressure next to the fish
Two waves are described by the following wave functions y1(x,t) = 3.50 sin (2.00x ? 10.0t) y2(x,t) = 12.00 cos (2.00x ? 10.0t) , find the amplitude and phase of this sinusoidal wave
A child's toy consists of a piece of plastic attached to a spring in the figure below. The spring is compressed against the floor a distance of 2.00 cm, estimate the force constant of the spring
Fixed in the frame F is a sheet of charge, of uniform surface density sigma, which bisects the dihedral angle formed by the x-y and the y-z planes. What is the surface charge density sigma prime
In reaching her destination, a backpacker walks with an average velocity of 1 m/s, due west. How far east did she walk (in kilometers)
A wave has an angular frequency of 110 rad/s and a wavelength of 1.80 m. Calculate the angular wave number and the speed of the wave.
A construction company is trying to select a concrete brand for laying down a foundation. Which brand of concrete can withstand the higher stress level
An undersea research chamber is spherical with an external diameter of 5.20 m. The mass of the chamber, when occupied, is 66400 kg. find the buoyant force on the chamber
A circus clown weighs 900 N. The coefficient of static friction between the clown's feet and the ground is 0.4. What is the minimum pulling force that the clown must exert to yank his feet out from under himself
Astronomers determine that a nearby galaxy is moving toward our galaxy at a speed of 720.0 km/s with respect to the Earth, what was the wavelength emitted by the star
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