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When connected to a 120 V source, an electric heater is rated at 1200 W and a toaster at 6.0 102 W. If both appliances are operating in parallel on a 120 V circuit, what total current is delivered by an external source?
A cube of ice is taken from the freezer at -8.7^circ C and placed in a 114 g aluminium calorimeter filled with 329 g of water at room temperature of 20.0 ^circ {rm C}. The final situation is observed to be all water at 15.0^circ C.
Calculate the potential energy stored in the bow, if the arrow of mass 5.50 10-2 kg leaves the bow with a speed of 45.0 m/s. Assume that mechanical energy is conserved.
In recent years, a number of nearby stars have been found to possess planets. Find the mass of the star
What must the charge (sign and magnitude) of a particle of mass 1.42g be for it to remain stationary when placed in a downward-directed electric field of magnitude 610N/C ? Use 9.81m/s^2 for the magnitude
These two isotopes are singly ionized (+e) and each is given a speed of 6.00 x105 m/s.
a block is pushed up 38 degree incline with a coefficient of kinetic friction of 0.10 by an applied force as shown. if F= 30N and M=8kg
determine the angle below the horizontal that you must aim your spear gun in order to catch dinner. Suppose the spear gun barrel is 1.70 m above the water surface, the fish is 1.40m below surface, and the spear travels in a straight line all the w..
At the end of the first fiscal year, $3,000,000 has been spent on the project. $1,500,000 has been collected from the grantor. Explain how should the grantee's Enterprise Fund statement of cash flows report the cash inflows?
Explain how far x can a man who weighs 447 n from the right support which is 1.1 m from the right side of the board before the board tips?
Consider the crates in the figure where m1 = 45 kg and m2 = 12 kg. Assume that there is no friction between m1 and the table, Write Newton's second law for motion along both coordinate directions
At a given time, t_0, sample A contains 750,000 radioactive nuclei. During the 1 hour before t_0, a total of 280,000 decays were observed from this sample. Calculate the half-life of the radioactive material
A 60 kg person jumps from rest off a 5m high tower straight down into the water. find the average force that the water exerts on the diver
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