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A fireman 44.0 m away from a burning building directs a stream of water from a ground-level fire hose at an angle of 32.0° above the horizontal. If the speed of the stream as it leaves the hose is 40.0 m/s, at what height will the stream of water strike the building?
An aluminum cup contains 225 g of water and a 40-g copper stirrer, all at 27°C. A 500-g sample of silver at an initial temperature of 85°C is placed in the water. Calculate the mass of the aluminum cup
The diameter of a blood vessel narrows by 70% due to the presence of a plaque on the blood vessel walls. what is the systolic blood pressure in the narrowed vein (in mmHg)
a radiator has an emassivity of .90 and its exposed area is 1.23 m^2. What is the heat flow rate from the radiator
The coefficient of kinetic friction for a 22 kg bobsled on a trackis 0.25. What force is required to push it down a 6.0° incline and achieve a speed of 68 km/h at the end of 75 m
A capacitor consists of square conducting plates 28cm on a side and 5.5mm apart, carrying charges ± 1.8?C, Find the stored energy
The distance between two telephone poles is 50m. When a 1kg bird lands on the telephone wire midway between the poles, the wire sags .200m. How much tension does the bird produce in the wire? Ignore the weight of the wire.
Discuss the advantages and disadvantages of nuclear physics. Do you know anything about nuclear waste from nuclear power plants and their disposals mechanism? Discuss the application of half-life.
A commercial airliner is undergoing its initial ascent while the pilot maintains a cabin environment of T = 23 C, r = 0.35, and p = 880 hPa. At the 670 hPa level an exit door ruptures and cabin pressure rapidly decompresses. Will clouds form in the c..
an organ pipe is 2.0cm long.Assume the pipe is cylindrical with one closed and one open end. if the frequency of the 3rd harmonic is 290Hz,then what is the speed of sound in the pipe
The radioactive element radium ({\rm Ra}) decays by a process known as alpha decay, in which the nucleus emits a helium nucleus. (These high-speed helium nuclei were named alpha particles when radioactivity was first discovered, long before the ident..
A velodrome track is banked so that a bicycle traveling at 43.5 km/h will have no tendency to slip to either side when traveling on the path that has a radius of curvature of 59.0 m
When a mass of 25 g is attached to a certain spring, it makes 19 complete vibrations in 4.5 s. What is the spring constant of the spring
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