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Estimate, in vacuum wavelengths, the thickness of a vacuum layer which would permit appreciable tunneling for light incident at 42 degrees and for light incident at 4 degrees.
A 100 g bullet is shot into a 1 kg sphere of wood, where it sticks. What is maximum initial speed the projectile can have
An aluminum cup of mass 200 g contains 800 g of water in thermal equlibrium at 80.0c. the combination of cup and water is cooled unformly so that temperature decreases by 1.50c per minute. at what rate is energy being removed by heat.
A 10.0kg stone slides down a snow-covered hill (the figure (Figure 1) ), leaving point A with a speed of 10.0m/s. How far will the stone compress the spring
A balloon inflated with helium (density .2 kg/m^3). If the density of air is 1.3 kg/m^3, what is the bouyant force exerted on the balloon
On a hot summer afternoon, Keith is out fishing in a rowboat when he decides to jump into the water and go for a swim, what is its velocity in the opposite direction after he jumps
a 200kg ball is shot from a 2200kg cannon horizontally and positivly at 200m/s. what is the cannons speed, in respect of Earth
A 20.0L tank contains 0.225kg of helium at 18.0%u2218C. The molar mass of helium is 4.00g/mol. How many moles of helium are in the tank
A 2.45m long copper wire has 1.35V across its ends. Find the electric field strength within the wire
with what speed would the arrow leave the bow.
cart is propelled over an xy plane with acceleration components ax = 4.5 m/s2, what is the velocity of the cart when it reaches its greatest y coordinate
Water flowing through a garden hose of diameter 2.72 cm fills a 22.0-L bucket in 1.60 min. What is the speed of the water leaving the end of the hose
Two point charges are on the y axis. A 5.20-µC charge is located at y = 1.25 cm, and a -2-µC charge is located at y = ?1.80 cm. Find the total electric potential at the origin
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