Question
When I am finding an area of a square with an uncertainty it’s obvious I do A=lw then Au=A[(lu/l)+(wu/w)). If I am doing the same with a cube, does the same logic apply? Vu=V[(lu/l)+(wu/w)+(hu/h)]. This is where ...
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General Physics 7 years 1 Answer 1180 views

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A road race is taking place along the track shown in the figure . All of the cars are moving at constant speeds. The car at point F is traveling along a straight section of the track, whereas all the ...
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General Physics 7 years 1 Answer 1554 views

Question
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 7 years 1 Answer 1063 views

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    RvTDLR
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    October 4, 2017 at 2:55 pm
    Centripetal acceleration = v^2 ÷ r v^2 is constant. This mea

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    October 4, 2017 at 2:51 pm
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    RvTDLR
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    October 4, 2017 at 2:46 pm
    Need the resistance and whether they are connected in series

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    October 4, 2017 at 2:43 pm
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    When physicists say there is a so-and-so chance that a parti

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    RvTDLR
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    October 4, 2017 at 2:41 pm
    The rate of change of pressure is the issue. When you climb

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    RvTDLR
    0
    October 4, 2017 at 2:38 pm
    To solve this problem, I will assume the temperature of the

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    RvTDLR
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Question
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Four children are playing in a field. The children form a line, holding hands. The player at the front of the line starts to spin around faster and faster, causing the others to run in circle, as shown in the ...
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General Physics 7 years 1 Answer 4060 views

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Learning Goal: To make the connection between intuitive understanding of a seesaw and the standard formalism for torque. This problem deals with the concept of torque, the “twist” that an off-center force applies to a body that tends to make it rotate.
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General Physics 7 years 1 Answer 3995 views

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Learning Goal: To understand and use inverse-square relationships. Two quantities have an inverse-square relationship if y is inversely proportional to the square of x. We write the mathematical relationship as y = A/x2. Here, A is a constant. This relationship is sometimes written as 
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General Physics 7 years 1 Answer 3901 views

Question
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 7 years 1 Answer 3446 views