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3 years ago

An egg falls off a table. The floor is 0.8 m from the table top.

Physics

2 answers:

Artist 52 [7]3 years ago

6 0

Answer:

Explanation:

Im not sure about it but.i hope its right

MariettaO [177]3 years ago

5 0

Explanation:

u=0, h=0.8m, t=?, g=9.8m/s², v=?

finding b first,

v²-u²=2gh

v²=2×9.8×0.8

v=√15.68

v=3.959 m/s.

finding a now,

v=u+at

3.959-0=9.8t

3.959/9.8=t

0.40s=t

hope this helps you.

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At the surface of Jupiter's moon Io, the acceleration due to gravity is 1.81 m/s2 . A watermelon has a weight of 54.0 N at the s

butalik [34]

Answer:

$m=5.51Kg$

Explanation:

The weight of an object on Earth is given by $W=mg$ , so we can calculate its mass by doing $m=W/g$ , which for our values is:

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Nothing is being asked about Io but if one wanted to know the weight W' of the watermelon there one just have to do:

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If 0.035pC of charge is transferred via the movement of Al3+ ions, how's many of these must be transferred in total? Please add

mr Goodwill [35]

Each $Al^+^3$ ion contains three extra protons. Hence, the extra charge on each $Al^+^3$ = $3 \times 1.6 \times 10^-^1^9$ C

Total charge = 0.035 pC

Total charge (Q) = $0.035 \times 10^-^1^2$ C

Let the number of $Al^+^3$ ions be n.

According to question:

$n \times 3 \times 1.6 \times 10^-^1^9 =0.035 \times 10^-^1^2$

$n = \frac{0.035 \times 10^-^1^2}{3 \times 1.6 \times 10^-^1^9}$

$n = 7.29167 \times 10^4$

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Hence, the total number of ions needed to be transferred is 72917

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