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A copper ball of mass 150 g is removed from Bunsen burner flame and dropped into 500g of water at -20 %u030AC. If the equilibrium temperature is 20 %u030AC, and the specific heat of copper is 384 J/kg %u030AC, what was the temperature of the copper when it left the flame?
A copper wire has a square cross section 2.7 on a side. The wire is 3.8 long and carries a current of 4.0 . The density of free electrons is 8.5*10^28 m^-3.
illuminate the object with the flashlight. One way to produce artificial gravity in a space station is to spin it.
Force F = -13jhatN is exerted on a particle at r = (3ihat+5jhat)m. What is the torque on the particle about the origin
Material found with a mummy in the arid highlands of southern Peru has a _6^14 text(C) activity per gram of carbon that is 74.0% of the activity percent initially
In a muonic atom, the electron is replaced by a negatively charged particle called the muon. What is the shortest wavelength of the Lyman series in a muonic hydrogen atom
A telescope can be used to enlarge the diameter of a laser beam and limit diffraction spreading. what is the minimum angular spread of the beam
Two identical positive charges exert a repulsive force of 7.4 x10-9 N when separated by a distance of 4.8 10-10 m. compute the charge of each.
A 75kg hiker climbs to the top of a 4100m -high mountain. The climb is made in 5.0h starting at an elevation of 3000m, Calculate the work done by the hiker against gravity
A 3m long wire of mass 200g is suspended in a magnetic field of 0.3 T, find the magnitude of the current is flowing through the wire
If a person radiates about 66 W of power at room temperature, how long does it take for person to radiate away the energy acquired by consuming a 230 Calorie doughnut.
It is desired to magnify reading material by a factor of 3.0× when a book is placed 8.5cm behind a lens, determine the power of the lens in diopters
Find out the net force exerted on the fluid inside the box by summing momentum flow rates out through each of four sides of the box.
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