All categories

2 years ago

When a ball is rolling down a hill, what forces are acting on the ball? Why does it speed up?

Chemistry

2 answers:

Blizzard [7]2 years ago

7 0

Answer:

the gravity speed up because the friction didn't speed up

Margaret [11]2 years ago

3 0

Answer:gravity

Explanation:

You might be interested in

Explain the arrangement of particles in solids, liquids and gases.

Alex787 [66]

Solids are tightly compacted
Liquids are medium
And gases are very spaced and floating around

6 0

2 years ago

Calculate (a) the pH of a 0.0250 M solution of phenylacetic acid, and (b) the pH of a 0.0500 M solution of sodium phenylacetate.

almond37 [142]

Answer:

Explanation:cool thre answer is 009000000000.1 because you have to add them so ye

6 0

2 years ago

How many km are in 5.6mm? 5.6x103 5.6x10-6 5.6x10-3 5.6x106

il63 [147K]

Hey there :)

Question: How many km are in 5.6mm?

=>5.6x10^3

=>5.6x10^-6

=>5.6x10^-3

=> 5.6x10^6

Answer:-

$5.6 \times 10^{ - 6}$

Explanation:-

By using the formula-

$1millimeter = \frac{1}{1000000}$

As 1 with 6 zeros, we convert it into exponential form.

$= > \frac{1}{10^{6} }$

As this above value is fraction type, we can do the reciprocal, thus, the exponent gets a negative value.

$= > 10^{ - 6}$

Now combine with given question.

$= > 5.6 \times 10^{ - 6}$

7 0

1 year ago

Calculate the [OH-] [H+]=0.000025

Harman [31]

Explanation:

There are several ways to define acids and bases, but pH and pOH refer to hydrogen ion concentration and hydroxide ion concentration, respectively. The "p" in pH and pOH stands for "negative logarithm of" and is used to make it easier to work with extremely large or small values. pH and pOH are only meaningful when applied to aqueous (water-based) solutions. When water dissociates it yields a hydrogen ion and a hydroxide.

3 0

2 years ago

How many atoms are in 9.8 moles of NaCl?

k0ka [10]

Answer:

a lot but im pretty sure if u just take avogadros number and multiply it by 9.8 u get the answer

Explanation:

4 0

2 years ago