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What temperature change would occur if 250 g of mercury gained 1.93 kJ of heat energy?
If one is trying to raise a piano with a mass of 374 kg at a constant velocity a distance of 2.4 meters, how many meters of the rope must be pulled?
t a point 11km deep in the ocean, the pressure is 1.13e8Pa. Find the density of water at the bottom of the ocean
The staircase has a y length of 13 meters. An X length of 13 meters as well. What would be the optimal length of each steps x length and y length, if the required amount of step of a staircase is 20.
consider a uranium nucleus to be a sphere of radius r 7.4 times 10-15 m with a charge of 92e distributed uniformly
Gasoline is made up of hydrocarbons. Suppose 80% of mass of gasoline is carbon and all of this becomes CO2 in combustion. If the density of gasoline is 6.7 lb/gal, how much CO2 is emitted per gallon of gasoline burned? The atomic mass of carbon is 12..
A beam of light is incident in air with an incident angle 56 degrees. calculate the index of refraction of this unknown liquid
The magnitude and direction of the total magnetic field at the origin.
Four horses are tethered at 4 corners of a square field of side 70 metres so that they just cannot reach one another. What is the area left ungrazed by the horses
A geiger-muller tube is a type of gas-filled radiation detector. It can detect particles like X-rays, alpha particles and beta rays (electrons). what is the density of the gas in this geiger tube
assume a planet had a density that varied with radius according to the equation, ρ =A/r, where A is some constant. Determine a formula that gives the central pressure for this kind of planet.
Dolphins emit clicks of sound for echolocation and communication. Find the difference (in Hz) between this frequency and the number of clicks per second actually emitted by the dolphin
A skier is pulled up a slope at a constant velocity by a tow bar. The slope is inclined at 24.9 ° with respect to the horizontal. Find the magnitude of the force that the tow bar exerts on the skier
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