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A conventional mercury thermometer consists of a thin glass capillary filled with mercury. The capillary is enclosed in a protective glass cylinder. These mercury thermometer can be quite sensitive and very precise. When such a thermometer is placed into a pot of hot water one observes that the temperature reading first drops for a moment before it gradually rises. Explain this phenomenon
A crate of mass 14.0 kg is pulled up a rough incline with an initial speed of 1.50 m/s. How much work is done by gravity
Two particles are separated by a certain distance. The force of gravitational interaction between them is Fsub 0. Now the separation between the particles is tripled. Find out the new force of gravitational interaction Fsub 1. Express your answer ..
An insulated Thermos contains 152 cm3 of hot coffee at 90 °C. You put a 12.0 g ice cube at its melting point to cool the coffee. By how many degrees has your coffee cooled once the ice has melted and equilibrium is reached?
Two batteries of emf and internal resistance e1,2 and r1,2 are connected in parallel. Find the effective emf and internal resistance
The distance between the moon and the earth is 384,403 km, The orbital period of the moon is about 27.32 days. Calculate the average orbital speed in m/s of the moon
A 100 g meter stick is allowed to pivot about its center. A 1 g bb is shot at the end of the stick (where it is embedded) causing it to rotate, What is the initial velocity of the bb
An LCR circuit consists of a 100 ohm resistor, a 10F capacitor, and a 5 mH inductor, and is driven by an acemf source whose frequency can be varied.
What is the maximum amount of energy that is stored in a volcano if the chamber is 5.5x10^4 meters wide, 7.2x10^4 meters long, thickness =500meters, located at 1200 meters deep, and the crust has a density of 2600 kg/m^3? show work please
Determine the moment of inertia for three children weighing 61.0 lb, 47.0 lb and 81 lb sitting at different points on the edge of a rotating merry-go-round, which has a radius of 12 ft.
Two children with masses of 24 and 31 kg are sitting on a balanced seesaw. If the lighter child is sitting 3 m from the center, where is the heavier child sitting
A 5.5 g dart is fired into a block of wood with a mass of 22.6 g.The wood block is initially at rest on a 1.5 m tall post. After thecollision, the wood block and dart land 2.5 m. from the base of thepost. Find the initial speed of the dart.
When jumping straight down, you can be seriously injured if you land stiff-legged. When he bends his knees, he comes to a halt in 0.130 s. Find the magnitude of the average net force now
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