Answer:
B) 35 W
Explanation:
Force applied by child = 75 N = F
Distance travelled by child = 42 m = d
Time traveled for is 1.5 min = 1.5×60 = 90 seconds = t
Work done by the child
W = Fdcosθ
⇒W = 75×42cos0
⇒W = 3150 Joule
Power is defined as work done per unit time
∴ The average power generated by the child is 35 W
You look up the element in the periodic table. Subtract the atomic number (small number) from the mass number (big number). The answer is the number of neutrons.
I think it is the wave energy.
Wave energy also known as the ocean energy is the energy harnessed from the ocean or sea waves. It is a source of power that comes from the endless march of the waves as they roll into the shore then back out. Using wave energy is advantageous as they are environmental friendly as there are no harmful byproducts, and also the energy from waves can be taken directly into electricity-producing machinery and used to power generators.
Property of all ionic compounds make them electrolytes;
An electrolyte is a compound that conducts an electric current it is also in the form of aqueous solution or in the molten state, the ionic compounds are electrolytes because they dissociate into ions.
Explanation:
- Property of all ionic compounds make them electrolytes;
- An electrolyte is a compound that conducts an electric current it is also in the form of aqueous solution or in the molten state, the ionic compounds are electrolytes because they dissociate into ions.
- Most of the unique properties come from the hydrogen bonds which holds the water together.
- when a solutes break away from the crystal, the negatively and positively charged ions become surrounded by solvent molecules and it dissolves the ionic crystal.
