The gauge pressure inside a pressure cooker is 13 psi. What is the net force on the lid of the pressure cooker if the lid's area is 110 square inches?
1430 lb
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A gamma ray has an energy of 1 MeV. (a) What is the frequency associated with this photon? (b) What is the wavelength associated with this photon?
What will be an ideal response?
A hunter points a rifle horizontally 3.30 m above the ground. The bullet leaves the barrel at 325. m/s
(a) How long did it take for the bullet to strike the ground? (b) How far horizontally did it travel?
Specific Heat: It is necessary to determine the specific heat of an unknown object. The mass of the object is 201.0 g. It is determined experimentally that it takes 15.0 J to raise the temperature 10.0°C. What is the specific heat of the object?
A. 7.46 J/kg ? K B. 1500 J/kg ? K C. 0.00130 J/kg ? K D. 3,020,000 J/kg ? K
In the figure, a laser positioned on a ship is used to communicate with a small two-man research submarine resting on the bottom of a lake
The laser is positioned 12 m above the surface of the water, and it strikes the water 20 m from the side of the ship. The water is 76 m deep and has an index of refraction of 1.33. How far horizontally is the submarine from the side of the ship? A) 84.1 m B) 64.1 m C) 104 m D) 74.1 m E) 94.1 m