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tangare [24]
3 years ago
9

List two ways to measure the gravitational potential energy of the ball when it’s dropped from different heights. Think about th

e motion of the ball and your energy flow diagram. Give an argument to support your choices.
Chemistry
2 answers:
Maru [420]3 years ago
5 0

Two ways to measure the gravitational potential energy of the ball when it's dropped from different heights are use a ruler to measure the height of the ball before it drops. Another one is use a triple beam balance to know the mass of the object that you are using. To find the gravitational potential energy, you need to multiply the height before it drops, the mass of the object, and the gravitational pull of earth which 9.8 m/s^2. Without the ruler, you won't really know the height. You don't necessarily need the triple beam balance, but it is better if you do because you can know the weight of anything. You can also search the weight in the internet.

melamori03 [73]3 years ago
4 0

Answer:

1. use a ruler to measure how many heights the ball falls down.

2. use notes to record observations.

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The volume of a gas at 2.0 atm is 3.0 L. What is the volume of the gas at 1.5 atm at the same temperature?
Andru [333]

<u>Answer:</u> The final volume of the gas comes out to be 4 L.

<u>Explanation:</u>

To calculate the volume with changing pressure, we use the equation given by Boyle's law.

This law states that pressure is inversely proportional to the volume of the gas at constant temperature and number of moles.

Mathematically,

P\propto \frac{1}{V}      (At constant temperature and number of moles)

The equation given by this law is:

P_1V_1=P_2V_2

where,

P_1\text{ and }V_1 are initial pressure and volume.

P_2\text{ and }V_2 are final pressure and volume.

We are given:

P_1=2.0atm\\V_1=3L\\P_2=1.5atm\\V_2=?L

Putting values in above equation, we get:

2atm\times 3L=1.5atm\times V_2\\\\V_2=4L

Hence, the final volume of the gas will be 4 L.

4 0
3 years ago
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Describe what is happening in this chemical equation: Al2(SiO3)3 + NaOH → Na(SiO3)3 + Al2OH Please Help ASAP
WITCHER [35]

Answer:

Double replacement reaction

Explanation:

This is what is known as a double replacement reaction. The two parts of each molecule separate and recombine to form two new compounds. For instance, Al_2(SiO_3)_3 separates into Al_2 and (SiO_3)_3, while NaOH separates into Na and OH, and then they recombine with the other compound.

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7 0
3 years ago
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How many moles are there in 8.94*10^24 atoms P?
IgorC [24]

Answer:

<h2>14.85 moles </h2>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

n =  \frac{N}{L} \\

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

n =  \frac{8.94 \times  {10}^{24} }{6.02 \times  {10}^{23} }  \\   = 14.850498

We have the final answer as

<h3>14.85 moles</h3>

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the answer is C. Distance

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