Master Physics with Fun Quizzes & Brain Teasers!

A woman stands on a bathroom scale in an elevator that is not moving. The scale reads 588 N. The elevator then moves down at an acceleration of - 2.8 m/s2. What does the scale read while the elevator moves down
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A proton is initially moving at 3.0 x 105 m/s. It moves 3.5 m in the direction of a uniform electric field of magnitude 120 N/C. What is the kinetic energy of the proton at the end of the motion
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If a bar magnet is falling through a loop of wire, the induced current in the loop of wire sets up a field which exerts a force on the magnet. This force between the magnet and the loop will be attractive when:
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g 1.90 kg textbook rests on a frictionless, horizontal surface. A cord attached to the book passes over a pulley whose diameter is 0.150 m, to a hanging book with mass 3.10 kg. The system is released from rest, and the books are observed to move 1.20 m in 0.900 s . Part A What is the tension in the part of the cord attached to the textbook? Express your answer with the appropriate units. T1 = nothing nothing Request Answer Part B What is the tension in the part of the cord attached to the hanging book? Express your answer with the appropriate units. T2 = nothing nothing Request Answer Part C What is the moment of inertia of the pulley about its rotation axis? Express your answer with the appropriate units. I = nothing nothing Request Answer Provide Feedback
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A rock is kicked horizontally off a dock into the bay 3times with a higher initial velocity each time as shown to the right. Which of the following statements is true regardingthese scenarios? AND WHY? (a) The rock takes the longest time to hit the water incase 3(b) The rock takes about the same time to hit the waterin each case(c) The rock hits the water below with the highest speedin case 1(d) The rock hits the water with the same speed in each|caseStudent Answer(s):Student Reasoning:
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Will ice melt faster in salt, sugar or water?
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1)You travel east at 50 km/hr and then north at 75 km/hr. What is your Resultant Velocity in km/h?(Remember the angle) (5pts)
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when maggie applies the brake of her car, the car slows
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If you travel 10 miles, how many kilometers are traveling
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Help please!!!!!!!!!!!!!
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Which of the following statements is true?Solar eclipses are safe to look at without special equipment.The International Date Line runs through Greenwich, England.New days begin at 180 longitude.Earth's orbit is a perfect circle.
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Elements in the same______are more chemically similar.THIS IS URGENT!!!!
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Which characteristics can be determined given only the information above? 1.) luster 2.) streak 3.) crystal size 4.) crystal structure PLEASE HELP ME!!!!!! SCIENCE
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if your mass is 72kg your textbooks in Madison has 3.7 kg and you and your textbook are separated by a distance of 0.33 M what is the gravitational force between you and your textbook
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One statement of the first law of thermodynamics is that:___________. a. the amount of work done on a system is dependent of pathway. b. the total work done on a system must equal the heat absorbed by the system. c. the heat flow in or out of a system is independent of pathway. d. the total energy flow in or out of a system is equal to the sum of the heat transferred to or from the system and the work done by or on the system. e. in any chemical process the heat flow must equal the change in enthalpy.
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a 0.006kg bullet is fired at 350 m/s into a container that stops it at .30 m. what is the average force stopping the bullet?
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The zygote eventually becomes a(n)spermeggbaby uterusHURRY 30 MINUTES LEFT (SCIENCE )
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Breaking is a result of friction between the brake linings and your foot. A. TrueB. False
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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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A dog with mass 14 kg has a kinetic energy of 135.5 J. What is the speedof the dog?A. 2.3 m/sB. 5.1 m/sC. 3.2 m/sD. 4.4 m/s
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1.What is the mass of an object that weighs 98 N?
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Part BYou should find that your Interpolated and extrapolated values are not even close to the actual recorded values for thesedisplacement and velocity readings. Describe the basic assumption behind Interpolation and extrapolation, then for at leastone of these values explain why the calculated value was significantly larger or smaller than the recorded value.BIxFont SizesA- A-EIE 3ICharacters used: 0 / 15000
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what is it called when I sound waves slowed buy a new medium1.echo 2.transmission 3.absorption 4.reflection
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What is a non-example of Newton's 3rd law of motion?
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