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
podryga [215]
3 years ago
11

Object A has 604 J of kinetic energy and 285 J of gravitational potential energy. Object B has 481 J of kinetic energy and 300 J

of gravitational potential energy. Which object has more mechanical energy? Object A has more mechanical energy. Object B has more mechanical energy. They have the same amount of mechanical energy. There is not enough information to know.
Chemistry
2 answers:
Olenka [21]3 years ago
3 0
Mechanical energy can be defined as the sum of kinetic energy and the gravitational potential energy. 

Object A has kinetic energy as 604 J and gravitational potential energy as 285 J.
Hence, mechanical energy of A = 604 J + 285 J
                                                   = 889 J

Object B has kinetic energy as 481 J and gravitational potential energy as 300 J.
Hence, mechanical energy of A = 481 J + 300 J
                                                   = 781J

Hence, object A has more mechanical energy than B.


nadya68 [22]3 years ago
3 0

Answer:

Object A has more mechanical energy.

Explanation:

Object A has more mechanical energy.

You might be interested in
If 3.68 grams of zinc were allowed to react with excess hydrochloric acid to produce zinc chloride and hydrogen gas, how much zi
AysviL [449]

Answer:

Here... Since there is excess HCl, you know the Zinc will be the limiting reagent.  I was able to create the reaction equation based on the info you gave: Z + 2HCl ----> ZCl2 +2H.  Now, in order to find the theoretical yield of ZCl, you need to convert Zinc from grams to moles.  Do this by dividing by its molar mass (65.38), thus: 3.68 (g) / 65.38 (g/mol) = 0.056286... moles.  

Now, using the balanced equation we made earlier, we see that 1 mole of Zinc creates 1 mole of ZCl2.  Thus our ratio is 1:1.  This makes the next step easy.  Since it is 1:1, we multiply the number of moles we have of Zinc (0.056286...) by the number of moles it will create of ZCl (1).  (0.056286)(1) = 0.056286 moles ZCl.  Now convert this to grams by multiplying by its molar mass (136.28) and you get 7.67 grams.  This is your theoretical yield.  The percent yield is found by dividing the actual amount obtained (7.12 g.) by the theoretical yield (7.67 g.) then multiply that by 100%.   When this is done, your Percent Yield is about 92.8%

6 0
3 years ago
How do molecules in a solid differ from those in a liquid or gas
artcher [175]
Molecules in solids are packed a lot closer together than molecules in liquids and gases, so there is far less space between solid particles. Because of this, solid particles cannot move around quickly and freely like liquids and gases, instead they only vibrate so are fairly 'locked' into the same place, so solids have fixed volume and space.
5 0
3 years ago
Sugar is...
Leya [2.2K]

Answer:

B. a type of carbohydrate

Explanation:

Sugar is a type of carbohydrate.

Hope it helped brainiest plz

5 0
3 years ago
This is my almost last question plsss help
Morgarella [4.7K]
The third one is correct, not sure abt another one
7 0
2 years ago
Read 2 more answers
What is the unit for volume?
kondaur [170]

The answer is volume because The base units of length and volume are linked in the metric system. By definition, a liter is equal to the volume of a cube exactly 10 cm tall, 10 cm long, and 10 cm wide. Because the volume of this cube is 1000 cubic centimeters and a liter contains 1000 milliliters, 1 milliliter is equivalent to 1 cubic centimeter.

Hope this helps :)

5 0
3 years ago
Other questions:
  • For the substituted cyclohexane compound given below, highlight the groups – by clicking on atoms – that will sterically interac
    14·2 answers
  • What happen to the temperature of ice when rock salt is added
    13·2 answers
  • A formula for a cough syrup contains 60 mg of codeine per fluid ounce. How many mg are contained in one teaspoonful?
    7·1 answer
  • Why is climate change important
    13·1 answer
  • Solids can often diffuse into a liquid but a solid cannot diffuse into another child
    5·1 answer
  • Jordan places a hot spoon into a container of ice
    14·1 answer
  • Which is not a property of a gas? * exert pressure high density High compressibility readily soluble
    5·1 answer
  • Describe the direction in which each object will accelerate. If the object won’t accelerate, write “no acceleration.” Explain wh
    12·1 answer
  • Please help I'm on a test rn
    9·2 answers
  • An atom is to a molecule as
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!