Science Bowl Practice Questions – Physics

Science Bowl Practice Questions Physics - 1378. Multiple Choice: The time needed for a net force of 10 newtons to change the velocity of a 5 kilogramsmass by 3 meters/second is:w) 1.5 secondsx) 6 secondsy) 16.7 secondsz) 150 secondsANSWER: W -- 1.5 SECONDS79. Multiple Choice: The value of G, the universal gravitational constant, was measured experimentallyby:w) Newtonx) Cavendishy) Copernicusz) KeplerANSWER: X -- CAVENDISH80. Multiple Choice: Two steel balls are at a distance S from one another. As the mass of ONE of the ballsis doubled, the gravitational force of attraction between them is:w) quarteredx) halvedy) doubledz) quadrupledANSWER: Y -- DOUBLED81. Multiple Choice: If the distance between the earth and moon were halved, the force of the attractionbetween them would be:w) one fourth as greatx) one half as greaty) twice as greatz) four times as greatANSWER: Z -- FOUR TIMES AS GREAT82. Multiple Choice: As a 10 kilogram mass on the end of a spring passes through its equilibrium position,the kinetic energy of the mass is 20 joules. The speed of the mass is:w) 2.0 meters per secondx) 4.0 meters per secondy) 5.0 meters per secondz) 6.3 meters per secondANSWER: W -- 2.0 METERS PER SECOND83. Multiple Choice: As a longitudinal wave moves through a medium, the particles of the medium:w) vibrate in a path parallel to the path of the wavex) vibrate in a path perpendicular to the path of the wavey) follow the wave along its entire pathz) do not moveANSWER: W -- VIBRATE IN A PATH PARALLEL TO THE PATH OF THE WAVE84. Multiple Choice: As a pendulum is raised to higher altitudes, its period: