Master Physics with Fun Quizzes & Brain Teasers!

A see saw 5 m long with a mass of 18 kg has a 31 kg child seated 0.3 m from the left edge. the pivot is located 2 m from the left edge of the see saw. if the child sits 3.9 m from the left edge, what must the mass of the second child be to balance the system?
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What is another name for NASA's space shuttle?A: Manned Space VoyageB: Galactic Exploration UnitC: Universal Planetary ExpeditionD: Space Transportation System
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How can I find the min/max velocity with a 100g weight on a spring? And what would you predict the kinetic energy to be (min/max)
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2.57 mi/hr= how many m/min? Simplify your answer, round to the nearest tenth.
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assuming that the brakes are lifted with constant speed what is the minimum power the motor must produce?
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a ball rolls off the edge of a table 1.44m above the floor and strikes the floor at a point 2m horizontally from the edge of the table. what is the time the ball was in the air?
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A kid with a mass of 35 kg is standing on roller blades and is holding an 11 kg medicine ball.If he throws the medicine ball horizontally to the right, which statement below is true?a. The kid will move to the left at the same speed that the ball moves to the right.b. The kid will move to the left at a higher speed than the ball moves to the right.C. The kid will move to the left at a lower speed than the ball moves to the right.d. The kid will not move at all.
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Can we make this quick I gotta have this question done really quick thank you
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A person has a weight of 500N on earth, based on this ..- If the person moves from the ground level to a position high up on a mountain, how will this affect the gravitational force between him and the earth?- What is accelerating towards the other, The Earth or the Person?
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A 8 kg block moving to the right at 4 m/s collides with a 5 kg block moving to the left at -9 m/s, and the two stick together. Find the final velocity.
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A 1.25 x 10-4 C charge is moving5200 m/s at 37.0 to a magnetic fieldof 8.49 x 10-4 T. What is the magneticforce on the charge?
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An olympic gold medalist from Moscow runs one time around the 400-meter track in 36seconds.What is her average speed?Answer:m/s
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How much energy, in picoJoules, is stored in a parallel plate capacitor connected to a 25.045 V battery? The plates at 18.655 cm x 18.655 cm, and separated by 7.686 mm with a thin sheet of polyethylene between the plates.
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The figure shows a uniform, horizontal beam of length = 7 m and mass = 50 kg that ishanging by two cables as shown. If a person of mass = 60 kg stands at 3.6 m from the leftend, what are the tensions (T1 and T2) in the cables? Write only the answer to T2 incanvas (in newtons).T1T2
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The key to successfully solving two-dimensional relative velocity problems is drawing the proper triangle to represent all three velocity vectors. Is this true or false?
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Ceres, the largest asteroid in the asteroid belt, has a mass of 9.23 x 1020 kilograms and a radius of 474 kilometers.What is the magnitude of the acceleration due to gravity on the surface of Ceres? Include units in your answer. Answer must be in 3 significant digits.
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Find the power dissipation of a 1.5 A lamp operating on a 12 V battery.
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What is the formula to find speed of light?1) c = /f2) c = f3) c = f/4) c = 2/f
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Provide a conceptual explanation for why the range was approximately the same when 0 = 30 degrees and 0 = 60 degrees
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Gas molecules rotate or vibrate because the binding force between the gas molecules is _____.
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Calculate the speed (in km/sec) of an asteroid in a circular orbit at 4 AU by dividing the orbits circumference by its period.
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By what percentage would an earth-orbiting satellite average orbital radius need to be decreased in order to reduce its orbital period by a factor of one-half?
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Two bows, A and B, are used to fire arrows X and Y respectively. The average force bow A exerts is twice that of bow B and arrow X has half the mass of arrow Y. Compare the acceleration of the arrows.Question 9 options:Arrow Y will have twice the acceleration of arrow X.Both arrows will have the same acceleration.Arrow X will have four times the acceleration of arrow Y.Arrow Y will have four times the acceleration of arrow X.
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Unit lestCurrent X is 25A and runs for 39 seconds. Current Y is 3.8A and runs for 24 seconds.Which current delivered more charge, and how much more charge did it deliver?
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