Physical changes do not change the identity of the substance. Heat causes chemical reactions. You cannot see chemical changes with the naked eye. The identity of a substance changes like when you burn paper, from paper it turns into ash and produces smoke, which are products from the chemical reactions.
Answer: The force will exert into the tree causing it to absorb the compact hit by the car which means the car gets damaged severely but the tree maybe only has a tiny crack. Mark me as Brainliest! :)
Explanation:
Cancer research, solar panel production and agricultural innovation will all be key areas for nano tech, and so will clothing design, cosmetics manufacturing and many others are some of the new developments.
<u>Explanation:</u>
Nanotechnology is also being applied to or developed for application to a variety of industrial and purification processes. Purification and environmental cleanup applications include the desalination of water, water filtration, wastewater treatment, groundwater treatment, and other nano remediation.
Nanotechnology offers the potential for new and faster kinds of computers, more efficient power sources and life-saving medical treatments. Potential disadvantages include economic disruption and possible threats to security, privacy, health and the environment.
Answer:
Explanation:
3. The word circuit means "go around", therefore a circuit is a pathway or closed path around which electricity (or water) flows.
4. Electrons flowing through a wire can be compared to water flowing through a hose. Once the flow of electrons or water is going, work, is performed.
5. You would get shocked in a bumper car by touching the floor and the ceiling at the same time. This means you are completing the circuit allowing electricity to flow.
6. Electricity from a wall outlet has enough energy to stop your
heart.
7. Electricity is the flow of electrons, because electrons move or jump from atom to atom.
8. Materials that allow electrons to move easily from atom to atom are called conductors.
9. Materials that do not allow electrons to flow easily are called insulators.
10. Semi- conductors are materials that are somewhere in between
.
11. Voltage is the force or pressure of electricity and is compared to the amount of water pressure in a hose.
12. Current (amps
) is the amount of electricity and is compared to the amount of water in a hose
.
13. Watts (power) is the term for work performed by electricity.
The average velocity of the Batman is 0.722 m/s North-East.
<h3>What is average velocity?</h3>
Average velocity can be defined as the ratio of the total displacement to the total time of a body.
To calculate the average velocity of Batman, we use the formula below, first, we need to calculate the resultant displacement of the Batman.
- D = √[(d₁-d₃)²+ (d₂)²]............... Equation 1
Where:
- d₁ = first displacement of the Batman = 6 m North
- d₂ = second displacement of the Batman = 3 m East
- d₃ = third displacement of the Batman. = 4 m south
Substitute these values into equation 1
- D = √[(6-4)²+3²]
- D = √(2²+3²)
- D = √(4+9)
- D = √13
- D = 3.61 m North-East.
To calculate the average velocity, we use the formula below.
- V = D/T............ Equation 2
Where:
- D = 3.61 m North-East
- T = total time = 15 s
Substitute these values into equation 2
- V = 3.61/5
- V = 0.722 m/s North- East.
Hence, the average velocity of the Batman is 0.722 m/s North-East.
Learn more about average velocity here: brainly.com/question/13665920