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Questions in physics

📝 Answered - Which pair of factors affects the force of gravity between objects? A. direction and distance B. mass and distance C. mass and shape D. shape and time

📝 Answered - A person with a mass of 15 kg is walking on a flat surface at a velocity of 5 m/s. What's the walker's momentum? A. 0.3 kg-m/s B. 75 kg-m/s C. 20 kg-m/s D. 3 kg-m/s

📝 Answered - Convert 68 °F to °C. A) 50 B) 15 C) 20 D) 36

📝 Answered - An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

📝 Answered - Select the correct answer from each drop-down menu. The distance between Earth and Mars is 225 million km. When converted using the conversion factor [tex]$1 AU =1.5 \times 10^8 km$[/tex], the distance between the planets is ____. The astronomical unit (AU) is ____ a light-year.

📝 Answered - Which of the following does NOT have an effect on wire resistance? A. temperature B. type of power C. wire length D. material

📝 Answered - An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

📝 Answered - Sound intensity model: [tex]L=10 \log \left(\frac{I}{I_0}\right)[/tex] [tex]L =[/tex] loudness, in decibels [tex]( dB ) ; I =[/tex] sound intensity, in watts [tex]/ m ^2 ; I _0=10^{-12}[/tex] watts [tex]/ m[/tex] The loudness of a jack hammer is 96 dB. Its sound intensity is about ______. The loudness of a compactor is 94 dB. Its sound intensity is about ______.

📝 Answered - A car is traveling in a race. The car went from the initial seconds. What is the acceleration? -13 m / s ^2 -6 m / s ^2 6 m / s ^2 13 m / s ^2

📝 Answered - Which symbol and unit of measurement are used for electric current? A. symbol: A; unit: I B. symbol: C, unit: A C. symbol: /; unit: C D. symbol: I; unit: A