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
Slav-nsk [51]
2 years ago
6

Please help me I will give a brainless

Physics
1 answer:
gulaghasi [49]2 years ago
4 0

Answer:

By opening the door, Elijah is using the chemical energy, which he obtained from eating food to do work. Thus, he is converting chemical energy to mechanical energy.

Stretching the spring by opening the screen door convert the potential energy which is stored in the spring to kinetic energy.

Overall there is conversion of chemical energy to potential energy.

By letting the door go, Elijah is using chemical energy. By snapping shut, the door is converting potential energy to kinetic energy. The overall energy change is conversion of chemical energy to kinetic energy.

Explanation:

You might be interested in
A student drew this diagram of Woese’s modern system of classification.
Elza [17]

Answer:

The class and order levels are switched

Explanation:

Woese's classification starts with a division in three parts of all the organisms, which is their domain, so according to him there's Bacteria, Archaea, and Eukaryota. After the domain we have the kingdom, then phylum, class, order, family, genus, and species at the end.

We can take the leopard as an example:

Domain - Eukaryota

Kingdom - Animalia

Phylum - Chordata

Class - Mammalia

Order - Carnivora

Family - Felidae

Genus - Panthera

Species - Panthera pardus

3 0
3 years ago
Read 2 more answers
During the photoelectric effect experiment, a photon is emitted with 5.73 x10-20 J of kinetic energy. If the work function of th
Lapatulllka [165]

Answer:

Frequency of incident light = 995×10 12

Explanation:

hope this helped you :)

4 0
2 years ago
how many atoms of oxygen are there in one molecule of cardon dioxide , if the chemical formula is CO2
garri49 [273]

Answer:

2 oxygen 1 carbon

Explanation:

8 0
3 years ago
Read 2 more answers
What Do You Already Know about Density? Material Design. Number each material and sort the items in order from lowest (1) to hig
Elena-2011 [213]

Answer:

1. Dry Beans - 591.75  kg/m^3

2. Flour - 593  kg/m^3

3. Wax - 900  kg/m^3

4. Wet sand - 2039 kg/m^3

5. Chalk - 2499 kg/m^3

6. Talcum Powder - 2776 kg/m^3

7. Copper - 8960  kg/m^3

Explanation:

Make sure your units are the same

7 0
3 years ago
A 1.5 kg bird is gliding at a height of 12 m with a speed of 3.8m/s. What is the kinetic energy of the bird, to the nearest joul
Georgia [21]

A 1.5 kg bird is gliding at a height of 12 m with a speed of 3.8m/s. The kinetic energy of the bird is 10.83 joules.

Explanation:

Kinetic energy can be defined as,The kinetic energy (KE) of an object is the energy that the object possesses due to its motion.

The Kinetic energy can be calculated by using formula,

Kinetic Energy: KE = 1/2 (mv 2)

Where, m = Mass, v = Velocity.

Here in this case the bird mass is 1.5kg and is gliding with velocity 3.8m/s

hence, KE= 1/2*(1.5)×(3.8)^2

                   =0.5×1.5×3.8×3.8

                   =10.83Joules

                   

                   

5 0
3 years ago
Other questions:
  • 10. A girl pulls a wagon along a level path for a distance of 44 m. The handle of
    6·1 answer
  • According to the second law of thermodynamics, when energy changes occur, _______ increases. question 2 options:
    8·1 answer
  • what is measurement? why is it important to have regular supervision of the weights and measurement in the market?​
    13·1 answer
  • Do part b please if you have a question just text me
    5·1 answer
  • WILL MARK BRAINLIEST!!!!!!!
    12·2 answers
  • Select the correct answer.
    13·1 answer
  • Is what happening in the air or the atmosphere at one time in one place
    10·1 answer
  • In a position vs. time graph depicting the motion of two different objects, the point at which the lines intersect is where the
    6·1 answer
  • Describe an instance when the motion energy of an object changed, causing some other energy change as well.
    9·1 answer
  • if a copper coin with a volume of exactly 50 cubic cm is dropped into the volume of water 4cubic cm,how much water will be overf
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!