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
Nikitich [7]
3 years ago
5

A company is interested in buying a new machine to replace their outdated equipment. However, before committing to the purchase,

the company asks the manufacturer to provide data on a certain machine's efficiency. The data suggests that with a supplied energy at a rate of 1,600 W, the machine will do useful work at a rate of 1,540 W. What's the efficiency of this particular machine? A. 103.90% B. 96.25% C. 77.00% D. 84.21%
Chemistry
2 answers:
frosja888 [35]3 years ago
6 0

Yeah its B took the PN Test


klemol [59]3 years ago
3 0
Efficiency is defined as the measure of the amount of work or energy is conserved in a certain process. At all times, in every process, work or energy is always lost or wasted due to certain interference. Not all work given is converted to useful work or energy. Thus , efficiency is calculated by dividing the energy or work output to the energy or work input then the value is multiplied by 100 to express efficiency as percentage.

Efficiency = work output / work input Efficiency = (1540 J / 1600 J) x 100= 96.25%
Thus, the answer is B.
You might be interested in
SOLVE FAST....⚡⚡⚡
Rina8888 [55]

Answer:

thanks for the points

Explanation:

have a nice day

6 0
2 years ago
Why is NaHCO3 a base?
worty [1.4K]

NaHCO3 is a product of a strong base and a weak acid reaction. Thus it has weak basic properties.

HCO3- ion is actually amphoteric, which means it can act as a base or an acid. But it is weaker than a strong acid or a strong base.

<span>HCO3- is amphoteric meaning it acts both as a B.L. Acid and a B.L. Base.. which is why it's used to neutralize both acid and base spills in the lab.</span>

7 0
3 years ago
Warm water rising to the surface of the
White raven [17]

Answer:

convection

Explanation:

7 0
3 years ago
Peter and Jessica are both forensic scientists. Peter visits crime scenes to pr
ratelena [41]

Answer: Peter is a Field Officer and Jessica is a Lab Officer

Explanation:

For Plato it should be, Peter is a "Field officer" because he's going into the fiend of the crime scene to find his evidence

And Jessica is a "Lab officer" because she stay's in the lab to analyze the evidence brought to her by Peter  

8 0
3 years ago
The atomic mass and abundance of Cr-50 is 49.946 amu and 4.3%. The atomic mass and abundance of Cr-52 is 51.941 amu and 83.8%. T
Sati [7]
Multiply the mass by the abundance and add each. Make sure to convert the percentage into a decimal. (49.946 * .043) + (51.941 * .838) + (52.941 * .095) + (53.939 * .024) = 51.99 round up using sig figs and the answer is c. 52.00 amu
6 0
3 years ago
Other questions:
  • Write the formula unit and the net-ionic equations to describe the reaction between potassium hydrogen phthalate (khp) and cesiu
    11·2 answers
  • A _________________ is developed through the scientific method, and it can be modified or improved upon. It may be represented b
    10·2 answers
  • A student completely dissolves some salt in a beaker of water. Which of these statements does NOT describe salt and water?
    5·1 answer
  • The photodissociation of ozone by ultraviolet light in the upper atmosphere is a first-order reaction with a rate constant of 1.
    5·1 answer
  • ANALOGY: Evaporates are to chemical sedimentary as dead fish are to clastic sedimentary.
    15·1 answer
  • You have a solution of sugar in water.You want to obtain the sugar from it.A:explain why filtration will not work ,b:which metho
    10·2 answers
  • You have an unknownthat contains only one cation (it is oneof the twelve from this experiment).Your solution is colorless and od
    7·1 answer
  • What is the voltage if the current is 10 amps and the resistance is 2 volts? How do I solve this?
    9·1 answer
  • What volume will 2 moles of nitrogen occupy at 780 torr and 10C.
    14·1 answer
  • if the same amount of heat is added to 50.0 g samples of each of the metals, which are all at the same temperature, which metal
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!