Because metric units use the deca system, 1km = 1000m = 100 000cm etc...
Answer:
Explanation:
Chemical reactions that release energy are called exothermic. In exothermic reactions, more energy is released when the bonds are formed in the products than is used to break the bonds in the reactants. Exothermic reactions are accompanied by an increase in temperature of the reaction mixture.
Answer:
The density of the sun is 4434kg/m³
This was found by dividing the mass (1.989 ×10³⁰kg) by the volume (4.486×10²⁶ m³) which was calculated using V = 4/3×pi ×r³
Explanation:
See attachment below.
A flashlight is charged by shaking an internal magnet back and forth through coiled wires.
Explanation:
Charging a flashlight by shaking an internal magnet back and forth through coiled wires can cause electromagnetic induction to occur. The wire is in the vicinity of changing magnetic fields.
- Electromagnetic induction or induction is the production of electromotive force(EMF) by varying the magnetic field in an electrical conductor.
- The wire serves as the electrical conductor.
- As the magnetic flux on it changes, the electromotive force is then produced.
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Electromagnetic spectrum brainly.com/question/9184100
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Answer:
A wheel and axle, force multipliers and a lever.
Explanation: