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21.18 g of copper pellets are removed from a 286°C oven and immediately dropped into 198.5 mL of water at 13°C in an insulated cup. What will the new water temperature be?
A wall in a house contains a single window. The window consists of a single pane of glass whose area is 0.19 m2 and whose thickness is 9 mm. what is the percentage lost by the window
the formulas for the ?uorides of some second period elements are lif bef2 bf3 and cf4. which is the correct formula for
A 78.05kg fisherman is sitting in his 33.25kg fishing boat along with his 13.49kg tackle box. What is the recoil speed of the fisherman and his boat
Sam pushes a 10.0-kg sack of bread flour on a frictionless horizontal surface with a constant horizontal force of 4.0 N starting from rest. What is the speed of the sack after Sam has pushed it a distance of 20 cm
An eagle is flying horizontally at 7.8 m/s with a fish in its claws. It accidentally drops the fish, How much time passes before the fish's speed doubles
question1two vessels a and b each have n molecules of the same perfect monoatomic gas. firstly the two vessels are
A luminous object 3.0 mm high is placed 200 mm from a convex mirror of radius of curvature 200 mm. Show that the (negative) image distance can be computed using a focal length of -100mm. Compute the image size?
q1. light of wavelength 443 nm in air enters a fishbowl filled with water and then exits through the crown-glass wall
Derive a formula for the maximum speed vmax of a simple pendulum bob in terms of g, the length L
On a cool morning, when the temperature is 15deg Celsius, you measure the pressure in your car tires to be 30 psi. After driving 20 mi on the freeway, temperature of your tires is 45 deg Celsius. What pressure will your tire gauge now show.
One object is at rest, and another is moving. The two collide in a one-dimensional, completely inelastic collision. In other words, they stick together after the collision and move off with a common velocity.
light with a wavelength of 600nm (6*10-^7m) strikes a single slit that is 0.5 mm (5*10^-4m) wide. How wide is the central bright fringe of this diffraction pattern
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