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3 years ago

In which of the following examples does the object have both kinetic and potential energy? Select all that apply.

2 answers:

6 0

I believe the answer is H for when you bounce it, it has stress when it hits the floor and then goes up giving it kinetic

Alex3 years ago

4 0

H,g,f,d, and b are the answers

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SCIENCE<3:: will give brainliest! :)

Alex777 [14]

Answer:

Option two

Explanation:

im smort

7 0

2 years ago

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Which machine can create images of atoms?

Svetradugi [14.3K]

Answer: Scanning Tunneling Microscope

Explanation:

The answer is, of course, the greatest Star Trek fan art imaginable: images literally built out of individual atoms. The images are the work of IBM scientists who created the unique artwork with a two-ton machine called the Scanning Tunneling Microscope that moves single atoms across a tiny piece of copper.

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2 years ago

A coin released at rest from the top of a tower hits the ground after falling 1.5 s. What is the speed of the coin as it hits th

Inessa05 [86]

initially coin is at rest and then it drop for total time t = 1.5 s

so here the speed of the coin at which it will hit the floor is to be find

$v_f = v_i + at$

here we know that

$v_i = 0$

a = 9.8 m/s^2

t = 1.5 s

now from above equation

$v_f = 0 + 1.5 (9.8)$

$v_f = 14.7 m/s$

so it will hit the floor with speed 14.7 m/s

3 0

3 years ago

If an electric current of 8.50 A flows for 3.75 hours through an electrolytic cell containing copper-sulfate (CuSO4) solution, t

muminat

Answer:

75.5g

Explanation:

From the ionic equation, we can write

$CU^{2+}+SO^{2-}_{4}\\$

next we find the number of charge

Note Q=it

for i=8.5A, t=3.75 to secs 3.75*60*60=13500secs

hence

$Q=8.5*13500\\Q=114750C$

Since one faraday represent one mole of electron which equal 96500C

Hence the number of mole produced by 114750C is

114750/96500=1.2mol

The mass of copper produced is

$mol=\frac{mass}{molar mass} \\mass=mole*molar mass\\mass=1.2*63.5\\mass=75.5g$

Hence the amount of copper produced is 75.5g

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3 years ago

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At divergent boundaries, hot mantle rock rises and _____ occurs.

xeze [42]

When rock rises, they decrease in pressure causes hot mantle rock to melt and form magma. In plate tectonics, divergent boundaries occur when plates pull apart.

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3 years ago

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