1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Anton [14]
3 years ago
7

Studying energy involves determining the amount of energy an object has. This energy can be kinetic or potential, or it could be

a combination of both. Consider a 2-kg bowling ball sits on top of a building that is 40 meters tall. It falls toward the ground. Think about the amounts kinetic energy the bowling ball has as it falls, select the when the ball would have the most kinetic energy from the choices given.
Question 1 options:

A. as it is just about to hit the ground from a fall off a building that is 40 meters tall and traveling 28 meters per second.

B. as it is half way through a fall off a building that is 40 meters tall and traveling 19.8 meters per second.

C. as it sits on top of a building that is 40 meters tall.

D after it hits the ground and is no longer moving.
i will give brainliest
Chemistry
1 answer:
Flura [38]3 years ago
3 0

Answer: the answer is a

Explanation:

You might be interested in
The bonds in the compound MgSO4 can be described as
Butoxors [25]
C. Sulfur and oxygen (non metals) forms a covalent bond while the magnesium (a metal) will react with both non metals to form an ionic bond
7 0
3 years ago
How many moles of H2O are needed to produce 5.6 mol of NaOH?<br> Na2O + H2O --&gt; 2NaOH
navik [9.2K]

Answer: 2.8 moles

Explanation:

The balanced equation below shows that 1 mole of sodium oxide reacts with 1 mole of water to form 2 moles of sodium hydroxide respectively.

Na2O + H2O --> 2NaOH

1 mole of H2O = 2 moles of NaOH

Let Z moles of H2O = 5.6 mole of NaOH

To get the value of Z, cross multiply

5.6 moles x 1 mole= Z x 2 moles

5.6 = 2Z

Divide both sides by 2

5.6/2 = 2Z/2

2.8 = Z

Thus, 2.8moles of H2O are needed to produce 5.6 mol of NaOH

3 0
3 years ago
A mole of oxygen and a mole of hydrogen (at STP) have all of the following in common EXCEPT
Drupady [299]

Answer:

Root mean squared velocity is different.

Explanation:

Hello!

In this case, since we have a mixture of oxygen and nitrogen at STP, which is defined as a condition whereas T = 298 K and P = 1 atm, we can infer that these gases have the same temperature, pressure, volume and moles but a different root mean squared velocity according to the following formula:

v_{rms}=\sqrt{\frac{3RT}{MM} }

Since they both have a different molar mass (MM), nitrogen (28.02 g/mol) and oxygen (32.02 g/mol), thus we infer that nitrogen would have a higher root mean squared velocity as its molar mass is less than that of oxygen.

Best regards!

8 0
2 years ago
Charcoal is primarily carbon. what mass of co2 is produced if you burn enough carbon (in the form of charcoal) to produce 4.80 k
Reika [66]
When carbon is burned in air carbon iv oxide gas is formed.
C (s) + O2 (g) = CO2(g)  ΔH = - 393.5 kj/mol
The enthalpy change of the  reaction is -393.5 j/mol which means that when one mole of carbon is completely burnt in air then 393.5 j of energy is evolved.
Thus, 1 mole = -393.5 j , then for 480 kj 
            = 480 × 1/393.5
             = 1.2198 moles
          1 mole of carbon iv oxide is equal to 44 g 
thus, 1.2198 moles will be 1.2198 × 44 = 53.6712 g of CO2
6 0
3 years ago
Is chemical a example of natural forces
Nastasia [14]
The only types of natural forces are gravitation, electromagnetism, the weak interaction, and the strong interaction. So no, chemical is not an example of a natural force.
I hope this helps.
7 0
3 years ago
Read 2 more answers
Other questions:
  • If it requires 18.2 mL of 0.45 molar barium hydroxide to neutralize 38.5 mL of nitric acid, solve for the molarity of the nitric
    5·1 answer
  • What is the change of e-
    5·1 answer
  • Please help! :)
    13·1 answer
  • If a star is 33.11 trillion kilometers away how much light years would that be
    13·1 answer
  • which best describes an element? - a pure substance - a type of a mixture - a pure compound - an impure substance
    10·2 answers
  • Which diagram shows electrons violating the Pauli exclusion principle?
    12·1 answer
  • The pedigree represents how a certain sex-linked recessive trait is inherited.
    13·2 answers
  • Bainliest. Mole Conversion
    13·1 answer
  • Type of reaction<br> PbSO. →<br> PbSO3 + __02<br> Type of reaction:
    10·1 answer
  • Explain why a random copolymer is obtained when 3,3-dimethyl-1-butene undergoes cationic polymerization.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!