The potential energy of a catapult was completely converted into kinetic energy by releasing a small stone with a mass of 20 grams. the velocity of the stone when it reached the target was 15.0 meters/second. what was the value of the kinetic energy of the stone when it reached the target? 2.05 joules 2.25 joules 3.20 joules 4.43 joules
Answers: 1
Physics, 22.06.2019 06:30
Which of these statements is true? a. quarks pair with leptons to form protons and neutrons. b. quarks pair with bosons to form photons. c. quarks pair with photons to form protons and neutrons. d. quarks pair with other quarks to form protons and neutrons. e. quarks pair with electrons to form protons.
Answers: 1
Physics, 22.06.2019 10:30
An insulated 40 ft^3 rigid tank contains air at 50 psia and 120°f. a valve connected to the tank is now opened, and air is allowed to escape until the pressure inside drops to 25 psia. the air temperature during this process is kept constant by an electric resistance heater placed in the tank. determine the electrical work done during this process.
Answers: 2
Physics, 22.06.2019 12:10
An ionic compound can conduct electricity when a it is dissolved in water b its crystals are ground into powder c it is in solid form d it is heated to just below its melting point
Answers: 1
The potential energy of a catapult was completely converted into kinetic energy by releasing a small...
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