Physics

13. Which of the following would have NO momentum? A person runningA tableA moving bus
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A 10 [kg] object is dropped from rest. a. How far will it drop in 2 [s]?
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Question 12 (1 point)[04.01)What must happen for liquid water to become water vapor? (1 point)aObThe water molecules must lose energy and stop moving.The water molecules must exert less pressure on their container.The water molecules must gain kinetic energyThe water molecules must lose heat and gain volume.Od
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Select the correct answer.Which scientist discovered the relationship between electricity and magnetism?OA.Nikola TeslaOBAlessandro VoltaOC.Hans Christian OerstedODIsaac Newton
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A net force of 275 N accelerates a 18.0 kg mass. What is the resulting acceleration? (5 points)
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Compact fluorescent bulbs are much more efficient at producing light than are ordinary incandescent bulbs. They initially cost much more, but last far longer and use much less electricity. According to one study of these bulbs, a compact bulb that produces as much light as a 100 W incandescent bulb uses only 23.0 W of power. The compact bulb lasts 10000 hours, on the average, and costs $ 12.00, whereas the incandescent bulb costs only $ 0.76, but lasts just 750 hours. The study assumed that electricity cost $ 0.090 per kilowatt-hour and that the bulbs were on for 4.0 h per day.Required:a. What is the total cost (including the price of the bulbs) to run each bulb for 3.0 years? b. How much do you save over 3.0 years if you use a compact fluorescent bulb instead of an incandescent bulb? c. What is the resistance of a "100-W" fluorescent bulb?
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Why do humans still think there is a god even though science has proven them wrong every time?
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What is a chemical reaction
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When you are standing in a subway train and the train suddenly stops but your body continues to move forward. Which one of Newton's laws is this?1st law2nd law3rd law4th law
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What micro wave used for?
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Two football players have a head-on collision and grab onto each other's uniforms. The 80kg Pennridge Ram was moving at 3 m/s, while the 70 kg Souderton player was moving inthe opposite direction at 2.5 m/s. What is their final velocity after impact?
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Page1of 30ZOOM3. A cat is moving at 18 m/s when it accelerates at 4 m/s? for 2 seconds. What is his newvelocity?
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Centripetal acceleration must involve a change in
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Select the correct answer.Which statement is true? . .The speed of sound in air is inversely proportional to the temperature of the air.OB.The speed of sound in air is directly proportional to the temperature of the air.The speed of sound in air is twice the temperature of the air.ODThe speed of sound in air is not affected by the temperature of the air.
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A wave has a speed of 23 m/s and a frequency of 13 Hz. What is the wavelength?
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This is about acceleration, velocity and all that mumbo jumboWhich best depicts the data?1, From 0 to 2 seconds, Anna experienced negative acceleration. 2, From 3 to 6 seconds, Elan accelerated while Anna did not. 3, From 6 to 8 seconds, Elan accelerated faster than Anna. 4, From 8 to 10 seconds, Elan experienced negative acceleration.
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Question 5The head of a hammer is often made of steel. This makes the head heavy, which helps create a strong force for driving nails. Steel is also strong. Thehead of a hammer must be strong to resist what force?
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Which of these warnings refers to a chemical property of the material?
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A 65.25 kg person holding a steel ball stands motionless on a frozen lake.The person then throws the ball, which propels the person at 1.25 m/s to theright and the ball 4.05 m/s to the left. If the initial momentum of the system iszero, what is the mass of the steel ball?
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describing motion with position distance vs time graphs
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Object has a mass of 35g and a density of 5g/cm3. What is the volume? *
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Find by means of a vector (quantity) diagram,the resultant of two forces of 7N and 3N acting atright angle to one anothersolve
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if 270 watts of power is used in 42 seconds, how much work was done
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why cats cannot run on smoth table
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