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A spherical metallic Christmas tree ornament has a diameter of 6.20 cm. If Saint Nicholas is by the fireplace, 1.41 m away, where will he see his reflection in the ornament?
9.00g of aluminium at 200 degree celsius and 21.0g of copper are dropped 53.0cm^3 of ethyl alcohol at 15 degrees celsius. What is the initial temperature of the copper
What is effectiveness of battery as an energy storage device
If the rocket gases are expelled at a speed of 2010 m/s, explain how much mass must be expelled?
Hakeem throws an 8.50 g ball straight down from a height of 2.0 m. The ball strikes the floor at the speed of 7.5 m/s. What was the initial speed of the ball? Suppose that air resistance is negligible.
In a charming 19th-century hotel, an old-style elevator is connected to a counterweight by a cable that passes over a rotating disk 3.50 m in diameter. The elevator is raised and lowered by turning the disk, and the cable does not slip on the rim ..
let ?1 and ?2 be the ground state and first excited state wave functions for a particle in a deep potential well of width L. calculate the uncertainty in momentum
q1. a proton travels with the speed of 8.34times105 ms at an angle of 32.3deg with the direction of a magnetic field.
A converging lens has a focal length of f = 22.0 cm. An object is placed 41.0 cm from the lens. Find the size of the image in cm if the object has a height of 4 cm. express answer with one decimal place.
A 150 pF capacitor and a 600 pF capacitor are both charged to 2 kV. They are then disconnected from the voltage source and are connected together, Find the energy lost when the connections are made
the workman wants to push a box up a 20.0 degree incline. if it takes 70 newtons of force to start the box moving how
A satellite with a mass of 330 kg moves in a circular orbit 8.00 multiply.gif 107 m above the Earth's surface. What is the gravitational force on the satellite
question1calculates the average velocity in following two cases.a you walk 73.2m at the speed of 1.22ms and then run
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