Master Physics with Fun Quizzes & Brain Teasers!

A body of mass 20 kg is dropped from a height of 100m .Find its Kinetic energyand potential energy after(i) one second (ii) Two second.
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Two college students push a broken down, 711 kg car to a mechanic. If the first student pushes with a force of 638 N and the second student pushes with a force of 573 N, what is the magnitude of acceleration of the car?
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WILL GIVE BRAINLIEST
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A piata with a weight of 115 N is supported by a single piece of kite string. What is the strings tension if the piata is accelerated upward at a rate of 2.43 m/s2?
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The amount of charge given off by a usb charger is 160 coulombs and the time is taken is 80 seconds. How much current flows through the charger?
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A space vehicle, of mass 555 kg, experiences a gravitational pull from Earth of255 N. The mass of Earth is 5.98 x 10^24 kg. How far is the vehicle above the surface of Earth?
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Show how to make a cantilever bridge. What is the difference between corrugation and cantilever.
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A Clear Falls wrestler brings a barbell down to his chest as he bench presses 90 kg. If the barbell accelerates downward at a rate of 2.69 m/s2 , what is the force exerted by the wrestler on the weights?
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A 8 kg object is pushed with a force of 17.9 N to the west and 22.1 N to the south. What is the acceleration acting on the object?
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A Clear Falls wrestler bench presses 64 kg. If the barbell accelerates upward at a rate of 2.57 m/s2, what is the force exerted by the wrestler on the weights?
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A 3588 kg tow truck tows Donald Trumps 821 kg car. The truck provides a force of 9170 N to the left. What is the magnitude of the acceleration for both objects?
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Keplers second law states that1) the orbits of the planets are elliptical.2) the speed of a planets orbit varies depending on which part of the ellipse it is occupying.3) the square of the ratio of the periods of any two planets revolving around the Sun is equal to the cube of the ratio of their average distance from the Sun.4) objects attract other objects with a force that is directly proportional to the product of their masses, and inversely proportional to the square of the distance between
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Kenyan Eliud Kipchoge holds the world record for the men's marathon at 2:01:39 (2 hours, 1minutes, 39 seconds) which he set in the 2018 Berlin Marathon. Calculate Kipchoge's average speedfor the marathon.
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which would have the greatest effect on apparently reducing the speed of the geese from Dianes perspective ?
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An oil film (n = 1.42) floating on water is 264 nm thick. What is the second longest (m = 2) wavelength IN NANOMETERS that reflects brightlyfrom the film?(Hint: If you leave the wavelength in nm, the answer will be in nm. No conversion necessary.)(Unit = nm)
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For sound waves, which travel at 343 m/s in air at room temperature, what frequency corresponds to a wavelength of 2.00 m ?
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A comet is traveling in outer space with a velocity of 2000 m/s. How long will it take to travel 300,000 meters?A) 2000 sB) 0.0006 sC) 6,000,000 s D) 150 s
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A bowling ball and a Ping-Pong ball are rolling at the same speed. Which ball requires more force to stop
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If a object is at rest what is the net force acting on it (such as something hanging on a spring)
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Pressure cookers increase cooking speed by raising the boiling temperature of water above its value at atmospheric pressure.(a) What pressure (in Pa) is necessary to raise the boiling point to 200.0C? Pa(b) What gauge pressure (in atm) does this correspond to? atm
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Which of the following questiones explaires thetype of wave which can travel at the speed oflight?A. What is an electromagnetic wave?B. What is a longitudinal wave?C. What is a mechanical wave?D. What is a transverse wave?
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(6.0 x 10^-5)(3.0 x 10^8)
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A racing car of 100kg move round a bank track at a constant speed of 108km /h assuming the total reaction at the horizontal radius of the track is 100m calculate the angle of inclination of the track reaction at the wheel ( Take g as 10.0)
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A 400 kg mass is moving in a circular path with a constant angularspeed of 5.00 rad/sec and with a linear speed of 5.00 m/sec. Themagnitude of the radial force on the mass is?
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