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Scorpion4ik [409]
4 years ago
7

Kyle's science class is doing an experiment to find out about the effects of different temperatures on Mexican jumping beans. Th

e teacher has divided the class into different groups. Each group will conduct their experiment and report back to the class on their findings.
During the experiment, Kyle's group made an error with a temperature measurement. The error was corrected. Should the mistake be shared with the class? Why or why not?
Physics
1 answer:
gizmo_the_mogwai [7]4 years ago
7 0

Answer:

Yes, to educate other groups on possible measurement errors that can cause variation in results

Explanation:

Having divided the class in groups, the teacher expects the results of all groups if doing similar experiment to be within a certain range. In case Kyle's group never corrected the error, they could have results out of range as expected. It is prudent that the mistake be shared with the whole class so that in future there should not be a repeat of the same.

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Force X has a magnitude of 1260 ​pounds, and Force Y has a magnitude of 1530 pounds. They act on a single point at an angle of 4
weeeeeb [17]

Answer:

Fe= 2579.68 P

α= 24.8°

Explanation:

Look at the attached graphic

we take the forces acting on the x-y plane and applied at the origin of coordinates

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FYx= - 1530*cos(45)° = - 1081.87 P

FYy= -  1530*sin(45)° = - 1081.87 P

Calculation of the components of net force (Fn)

Fnx= FX + FYx

Fnx= -1260 P -1081.87 P

Fnx= -2341.87 P

Fny=FYy

Fny= -1081.87 P

Calculation of the components of equilibrant force (Fe)

the x-y components of the  equilibrant force are equal in magnitude but in the opposite direction to the net force components:

Fnx= -2341.87 P, then, Fex= +2341.87 P

Fny=  -1081.87 P P, then, Fex= +1081.87 P

Magnitude of the equilibrant (Fe)

F_{n} = \sqrt{(F_{nx})^{2} +(F_{ny})^{2}  }

F_{e} =\sqrt{(2341.87)^{2}+(1081.87)^{2}  }

Fe= 2579.68 P

Calculation of the direction of  equilibrant force (α)

\alpha =tan^{-1} (\frac{F_{ny} }{F_{nx} } )

\alpha =tan^{-1} (\frac{1081.87 }{2341.87} )

α= 24.8°

Look at the attached graphic

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Answer:

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This means that after the collision, the two balls have same velocity v, but they go in the opposite direction with respect to their original direction.

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