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Assume all temperatures to be exact.
An aluminum spoon at 106oC is placed in a Styrofoam cup containing 0.200kg of water at 17oC. If the final equilibrium temperature is 30oC and no heat is lost to the cup itself or the environment, what is the mass of the aluminum spoon?
a 4.8 kg dog stands on an 19 kg flatboat and is 6.1 m from the shore. he walks 2.2 m on the boat toward shore and then
Popular books like The God Delusion ( Dawkins 2008), and God is Not Great ( Hitchens 2007) make a strong case against religion. But religion plays an important role in society. Can society exist without something anthropologists would identify as rel..
At one instant, force =5.82 N acts on a 0.973 kg object that has position vector = (3.04-3.04) m and velocity vector =(-9.02 +9.02)m/s. About the origin and in unit-vector notation, what are (a) the object's angular momentum and (b) the torque acting..
A person has a piece of (mass less) string of length 0.6 m with a ball of mass 0.05 kg at the end of it. The person starts to swing this device in a vertical circle with a center located 2 m above the ground. The tension in the string is kept constan..
An object weighing 300 N in air is immersed in water after being tied to a string connected to a balance. find the density if the object and the oil
A camera lens has a focal length of 215 mm, How far from the lens should the subject for the photo be if the lens is 21.9 cm from the film
A uniform meter stick with a mass of 205 g is supported horizontally by two vertical strings, one at the 0 cm mark and the other at the 90 cm mark. what is tension on the string at the 0 cm mark and at the 90 cm mark.
Oxygen gas having a volume of 1070 cm3 at 35.0°C and 1.01 x 105 Pa expands until its volume is 1650 cm3 and its pressure is 1.06 x 105 Pa. Find the number of moles of oxygen present
The large blade of a helicopter is rotating in a horizontal circle. The length of the blade is 6.64 m, Find the ratio of the centripetal acceleration at the end of the blade to that which exists at a point
A wagon wheel with spokes is mounted on a vertical axis therefore it is free to rotate in the horizontal plane. Find how far can the bug crawl along the spoke before it starts to slip
ccccthe Zambesi river in Africa rushes over Victoria Falls at a rate of 25 x 10^6 gallons per minute. The falls are 108 m high, 1 gallon equals 3.785 x 10^-3 m^3 (or 0.1337 cubic foot), and the water has a density of 1.00 x 10^3 kg/m3 (each cubic foo..
A 3.93-g bullet, traveling at a speed of 421 m/s, strikes thewooden block of a ballistic pendulum, such as that in Figure 7.14.The block has a mass of 250 g. (a) Find the speed of thebullet/block combination immediately after the collision.
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