Bjorn is holding a tennis ball outside a second floor window (3.5 meters from the ground) and billie jean is holding one outside a third floor window (6.25 meters from the ground) how much more GPE does billie jean's tennis ball have? (each tennis ball has a mass of 0.06 kg)

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Answer 1

Answer: The answer is 1.01 x 10^(-11) N. I arrived to this answer through calculating the GPEs of both balls. Bjorn's ball has a GPE of 1.402 x 10^(-11) N. Billie Jean's ball has a GPE of 2.503 x 10^(-11) N. I subtracted the two and I found that Billie Jean's tennis ball has a GPE of 1.01 x 10^(-11) more than Bjorn's tennis ball.

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Aristotle, the ancient Greek philosopher, thought that heavy objects fall to Earth faster than lighter objects. How could Aristotle's hypothesis be supported or disproved?

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Gravitational potential energy=mass of object x gravitational field strength on earth(9.8 usually rounded to 10) x the height the object is held at

Therefore if two objects were held at the same height, the object with more mass(the heavier object) will fall faster because it's gravitational potential energy is greater than that of the lighter object

If the overall magnification of a series of two lenses is 30x, and one lens magnifies 5x, what is the magnification of the other lens? Calculate the total magnification if the 5x lens is replaced by a 7x lens

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Answer:

Explanation:

Given

Overall magnification $M=30 x$

One lens magnification is $5 x$

suppose the magnification of other lens is $y$

A compound lens is made up of series of lenses either of same or of different magnification so

$y$ is given by

$y=(30 x)/(5 x)=6 x$

If $5 x$ lens is replaced by $7 x$ lens then total magnification is

$7 x* 6 x=42 x$

Final answer:

The second lens has a magnification of 6x. If the 5x lens is replaced by a 7x lens, the new total magnification would be 42x.

Explanation:

To find the magnification of the second lens, we need to know that the overall magnification of a system is the product of the individual magnifications of its elements. If the overall magnification is 30x and one lens magnifies 5x, the magnification of the other lens can be calculated by dividing 30x by 5x, giving us a magnification of 6x for the other lens.

If the 5x lens is replaced by a 7x lens, we can calculate the new overall magnification by multiplying the magnification of the two lenses together. So, 6x (from the other unchanged lens) multiplied by 7x gives us an overall magnification of 42x.

Learn more about Lens Magnification here:

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Potential energy is the energy an object has because of itsa. density.
b. size.
c. location.
d. speed. E. temperature.

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D. Locatian. Based on its formula Ep=m.g.h Which: m: Mass of object g: acceleration of gravity h: height (location where the object is located)

A wave creates a strong undertow

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Hey there!

Answer: A swell

A wave which creates a strong undertow is called a swell. These types of waves are also known as surface gravity waves.

Thank you!

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