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SpyIntel [72]
3 years ago
14

Two balls of equal size are dropped from the same height from the roof of a building. One ball has twice the mass of the other.

When the balls reach the ground, how do the kinetic energies of the two balls compare?
A. The lighter ball has more kinetic energy than the heavier ball because it had mass.

B. The heavier ball has more kinetic energy than the lighter ball because it has more mass


C. Both balls have the same kinetic energy because they were dropped from the same height.
Chemistry
1 answer:
WARRIOR [948]3 years ago
4 0

Answer:

b the heavier ball has more kinetic energy than the lighter ball because it has more mass

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What is the basic unit of structure and function in all living things? a cell b organism c atom d plasma
valkas [14]

Answer:

A. Cell

Explanation:

Cells are basic units of structure and function in living things. This means that cells form the parts or an organism and carry out all of the an organism's processes, or functions.

4 0
3 years ago
(((NEED ANSWER QUICK!!!)))<br><br> Which is the stronger conjugate base, CN- or OCN-? Explain
Shkiper50 [21]

Answer:

The stronger conjugate base will be the weaker acid; i.e., the acid with the smaller Ka-value.

Explanation:

Given conjugate base CN⁻ => weak acid => HCN =>  Ka =4.9 x 10⁻¹⁰

Given conjugate base OCN⁻ => weak acid=> HOCN => Ka = 3.5 x 10⁻⁴

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6 0
3 years ago
Hydrogen peroxide can decompose to water and oxygen by the following reaction
mestny [16]
To begin calculating, there is one thing you need to remember :1 mole of H2O2=34.0148 g
Then we have 5.00g of H2O2=5/34.0148=0.146995
As you know decomposition of 2moles now has prodused <span>196kj
So, </span><span>q is made due </span>0.146995 moles of H2O2=(-196/2)*0.146995=-14.40551Kj
I'm sure it will help.
6 0
3 years ago
Which of the following example(s) from everyday life are made possible by modern chemistry?
lorasvet [3.4K]

Answer:

I believe it is c

Explanation:

........................

7 0
3 years ago
Read 2 more answers
Indique el valor de los números n,l,m y s para el último electrón de ₇N.(1 pt c/u) n = _____ l = _____ m = _____ s =_____
tia_tia [17]

Answer:

n = 2

l = 1

m = 1

s = +1/2

Explanation:

₇N tiene la configuración electrónica;

1s2 2s2 2p3

Esto implica que este último electrón tiene los siguientes números cuánticos;

n = 2

l = 1

m = 1

s = +1/2

Este último electrón estará en un orbital de 2pz como lo muestran los números cuánticos enumerados anteriormente.

6 0
3 years ago
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