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bonufazy [111]
3 years ago
5

Hillary is dropping objects that are the same volume. She wants to investigate how an object’s mass affects the average speed at

which it travels when dropped, until it hits the ground. Which variable must Hillary change during the experiment?
A. the timer
B. the drop height
C. the mass of the object
D. the place where she drops it
Physics
1 answer:
Artemon [7]3 years ago
3 0

Answer:

letter C. The mass of the object.

Explanation:

i hope it helps.

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Answer:

q=3.5*10^-4

Explanation:

<u>concept:</u>

The force acting on both charges is given by the coulomb law:

F=kq1q2/r^2

the centripetal force is given by:

Fc=mv^2/r

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KE=1/2mv^2

<u>The tension force:</u>

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T=2(50 J)/r

T=100/r

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q=√(2r[53.5 J-50 J]/k)                                          √= square root on whole

q=√2(2)(53.5 J-50 J)/8.99*10^9

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a bubble of air of volume 1cm^3 is released by a deep sea diver at a depth where the pressure is 4.0 atmospheres. assuming its t
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Answer:

hope this helps!

Explanation:

Volume of the air bubble, V1=1.0cm3=1.0×10−6m3

Bubble rises to height, d=40m

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The pressure on the surface of the lake: P2=1atm=1×1.103×105Pa 

The pressure at the depth of 40 m: P1=1atm+dρg

Where,

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g is the acceleration due to gravity =9.8m/s2

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We have T1P1V1=T2P2V2

Where, V2 is the volume of the air bubble when it reaches the surface.

V2=

8 0
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Ball A was carried to the top of a hill in a straight line, while ball B was carried in a longer, zigzag path. At the top of the
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