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Shouldn’t they stop with time? I mean go ahead and shake a bottle of water, it will shake and it will eventually stop, unless you shake it again. What makes the sea water move so much? Why doesn’t ...
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General Physics 4 years 1 Answer 1567 views

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In conservation of momentum, a system of two objects starting with zero momentum, one of the objects is caused to move in one direction. The other object will move in the opposite direction. According to Newton’s first ...
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General Physics 4 years 1 Answer 680 views

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Can anyone tell me the most BASIC, and watered down rundown of string theory? Pretend you’re telling a random off the street that doesn’t know anything past 11th grade physics.
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General Physics 4 years 1 Answer 607 views

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a) What was the lizard’s velocity in the first 2 seconds? b)What was the lizard’s velocity from 2-4 seconds? c) What was the lizard’s velocity from 4-5 seconds? ...
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General Physics 4 years 1 Answer 659 views

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Particle A of mass 500g is moving with a constant velocity of 12m s^-1 towards particle B of mass 1.5kg which is initially at rest. After collision, particle A comes to a rest and particle B moves ...
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General Physics 4 years 1 Answer 1698 views

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The figure shows a simple model of a seesaw. These consist of a plank/rod of mass mr and length 2x allowed to pivot freely about its center (or central axis), as shown in the diagram. A small sphere of mass m1 is attached to ...
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General Physics 4 years 1 Answer 6083 views

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A positive lens with focal point ”f” are used to image an object according to the figure below. For what distances ”a”(expressed in ”f”) can we get with the following characteristics; a) Up- and down, smaller and real. b) Upright, enlarged ...
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General Physics 4 years 1 Answer 623 views

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An aircraft lands on a runway at a velocity of 40 m s-1 and brakes to a halt in a distance of 860 m. Calculate a) the breaking time b) the deceleration of the aircraft
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General Physics 4 years 1 Answer 564 views

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A machine part is made up of two pieces, with centers of gravity shown in the figure.(Figure 1) Which point could be the center of gravity of the entire part?
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General Physics 4 years 0 Answers 2788 views

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A rocket generates a net force (F) of 2,050,000 newtons, and the rocket’s mass (m) is 40,000 kilograms. Use the formula F = ma to find the acceleration (a) achieved. A. 51.25 meters/second^2 B. 51.125 meters/second^2 C. 42.25 meters/second^2
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General Physics 4 years 1 Answer 2196 views