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
Bas_tet [7]
4 years ago
7

E = 1 × 4 × (40 - 20)

Physics
1 answer:
tankabanditka [31]4 years ago
5 0

Answer:

80

Explanation:

1 x 4 = 4

40- 20 = 20

so... 4 x 20 = 80

You might be interested in
How is wave movement affected by the various mediums it may travel through?
Juliette [100K]

Answer:

speed is affected by the medium in wich the wave travels.

Explanation:

The speed of a wave is affected when traveling in different medium, depending on the medium in which the wave travels it can go faster or slower, or not even be able to travel in that medium.

For light waves, the denser the medium through which the wave travels, the slower it will go through it, as there is more resistance to the light particles.

And in waves like sound, which instead of particles is a vibration or disturbance in the medium, they travel faster in denser mediums such as metal, because the disturbance is transmitted more efficiently thanks to how close together that the particles are in the metal, This is why sound does not travel in a vacuum; there are not even particles to transmit the vibration.

5 0
3 years ago
The greenhouse effect keeps earth warmer than it would normally be. True False
MariettaO [177]

Answer:

The World Is Pure Enough as it is that we don't melt or (lose air) \_/

Explanation:

All people don't have to be concerned about is a disruption of the plethora of gases we already have in our atmosphere and trees need C02 in order to breath and that's what cows produce that's what we breath out and what coal plants and fossil fuels produce the more C02 the more trees produce oxygen because trees breathe in C02 and pop out Oxygen and plus power plants don't produce C02 they produce water vapor so (ALL IN ALL C02 Will not cause the Ice Caps to melt because trees already have that issue covered that's why the scientists said they fixed the global warming issue to keep people from whining about a non-existent problem. so basically its true The greenhouse effect does keep the earth warm halfly because of the hot gases that get trapped in the atmosphere like C02.True

6 0
4 years ago
Female scientist who came to america to study starts at harvard
krok68 [10]
Is that a question? If it is not what its the question?
7 0
4 years ago
Describe what happens to the particles of water when it boils.
Nezavi [6.7K]

Answer:

The liquid turns to a gas.

Explanation:

If a liquid is heated the particles are given more energy and move faster and faster expanding the liquid. Particles in the middle of the liquid form bubbles of gas in the liquid.

8 0
3 years ago
If Fg=mg solve for g
Bas_tet [7]

Answer:Fg = mg however newtons second law states that the net force acting on an object is equal to it's mass times it's acceleration so what allows us to say that Fg = mg because certainly not for every single situation the net force is going to equal to the force of gravity please explain... what allows us to say Fg = mg

Source https://www.physicsforums.com/threads/fg-mg-questioned.336776/

Explanation:

6 0
3 years ago
Other questions:
  • Which transformation of energy occurs in a hydroelectric power plant?
    9·1 answer
  • The elementary charge equals 1.6 x 10^-9 C. <br> a. True<br> b. False
    12·1 answer
  • An electric field exerts an electrostatic force of magnitude 1.5 x 10-14 newton on an electron within the field. what is the mag
    11·1 answer
  • A special vehicle of length 50 m is designed to take passengers at extremely high speeds between different places on earth.
    14·1 answer
  • All digits shown on the measuring device, plus one estimated digit are considered____
    5·1 answer
  • The surface temperature of venus is so high because
    5·1 answer
  • What is a proposed answer to a question
    13·1 answer
  • Which example best describes a restoring force?
    7·1 answer
  • Determine the dimensions (a, b) of an air-filled rectangular waveguide that providessingle mode operation over the frequency ran
    13·1 answer
  • A car drives 16 miles south and then 12 miles west. What is the magnitude of the car's displacement?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!