Master Physics with Fun Quizzes & Brain Teasers!

Which term describes speed in a certain direction? A. Velocity B. Force C. Energy D. Acceleration
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Assuming the same current is running through two separate coils, why is it easier to thrust a magnet into a wire coil with one loop than one with four loops?
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The kinetic theory explains the ability of gases to be forced or squeezed into smaller volumes. What is this ability called? A. definite volume B. absolute volume C. diffusion D. compressibility
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In the diagram, the arrow shows the movement of electric charges through a wire connected to a battery.A battery with an arrow at its top running from left to right. A black line connects the right end of the battery to the left end by making a series of straight lines to form a rectangular box with the battery as part of the bottom side.What causes the electric charges to flow from one end of the battery to the other?a balance in electric potentiala balance in resistancea difference in electric potential a difference in resistance
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When is the force on a current-carrying wire in a magnetic field at its strongest?
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which characteristics cannot be inherited?1) color of animal's hair 2) Hight of a plant 3) knowledge of facts 4) shape of a face
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Which describes a velocity? A. Speed changing from 2 km/hr to 5 km/hr B. Moving north at 40 km/hr C. Flying at 200 miles/hr D. Moving 8 meters in 2 seconds
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Noah and Nina are 15 m apart in a closed room. Noah says the same sentence twice. The first time, Nina does not hear the sound, but she does hear the sentence the second time.What best describes the difference between the second sound wave and the first?
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The aeroplane lands at a speed of 80 m/sAfter landing, the aeroplane takes 28 s to decelerate to a speed of 10 m/sThe mean resultant force on the aeroplane as it decelerates is 750 000 NCalculate the mass of the aeroplane.[5 marks]
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Match each knee ligament with the correct label
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A ball was positioned in the middle of a smooth ramp and allowed to rolldownward. How does the total mechanical energy of the ball before it isreleased compare to its total mechanical energy at the bottom of the ramp?Assume there is no friction.
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A balloon is fitted over the open end of a glass beaker that contains water. the beaker is placed over a flame, which heats the water. at the same time, the balloon is squeezed, so that it deflates. what are the correct signs for the heat and work changes to the beaker and balloon system? a. -q, +w b. -q, -w c. +q, +w d. +q, -w
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A car is moving at a constant speed along a straight line. Which statement is true about the forces acting on the car?
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A pure sound wave, generated by a tuning fork, is considered a periodic wave. Which statement is true for this tuning fork sound wave?
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a motorboat is headed at a velocity of 25 kilometers/hour toward the north, while the velocity of the water current is 12 kilometers/hour to the west. what is the magnitude of the boats resultant velocity
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A girl throws a marshmallow that lands in her friends mouth 2 m away. The girl threw the marshmallow at an angle of 30 degrees. How hard did she throw the marshmallow?
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If this combination of capacitors is attached to a 9 v battery how much energy will be stored on the plates 25 15
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(c) __________ ___________ The Horse in Motion . (c) __________________ _______________________famous series of photographs documenting a horse in motion were made possible by a number of cameras placed side by side as a horse broke each wire.
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A 3.0-kg ball with an initial velocity of (4.0i + 3.0j) m/s collides with a wall and rebounds with a velocity of (-4.0i + 3.0j) m/s. what is the impulse exerted on the ball by the wall?
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While studying the spectrum of a gas cloud in space, an astronomer magnifies a spectral line that results from a transition from a p state to an s state. she finds that the line at 575.050 nm has actually split into three lines, with adjacent lines 4.20 x 10^-2 nm apart, indicating that the gas is in an external magnetic field. (ignore effects due to electron spin.) what is the strength of the external magnetic field?
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Set up a simple series circuit and connect it to the power source. plan a way in which to observe the connection between electric charge and magnetic fields and forces. what piece of equipment should you use? what do your observations illustrate about the relationship between moving electric charges and magnetic fields/forces?
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What name is given to the system that distributes electricity from power stations around the UK?
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Find the displacement of the body in 5 seconds from the beginning of themotion is
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Help please urgent if the gross primary productivity of a desert is 300 gc/m2/year, how much productivity is lost to cellular respiration? 50 gc/m2/year 150 gc/m2/year 250 gc/m2/year 350 gc/m2/year
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