Answer:
a. closer to 20∘C
Explanation:
= mass of pallet = 50 g = 0.050 kg
= specific heat of pallet = specific heat of iron
= Initial temperature of pellet = 200 C
= mass of water = 50 g = 0.050 kg
= specific heat of water
= Initial temperature of water = 20 C
= Final equilibrium temperature
Also given that
Using conservation of energy
Energy gained by water = Energy lost by pellet
hence the correct choice is
a. closer to 20∘C
because poor and people of back places may not have enough knowledge about contraceptive devices and may not have enough money to buy it.That's why poverty and backwardness are considered to be a cause of population growth
Okay... so here's what happened;
A huge amount of mass is above you, squeezing down from you from all sides; that's what happened to the hydrogen gas in the core of the sun. It got squeezed together so tightly that four hydrogen nuclei combined to form one helium atom. That's called nuclear fusion. In the process, some of the mass of the hydrogen atoms is converted into energy in the form of light.
:)
Answer:
television
Explanation:
a television refracts light (the light bounces off of the screen
Wave power can be regarded as a reliable source of energy because the ocean currents are always moving.
<h3>What can be the challenges of wave power?</h3>
Wave power is a device that can be used to convert the mechanical energy of the ocean waves into electrical energy based on the principle of conservation of energy.
The major challenges that face the use of wave power in electricity generation is the unreliability of the waves which leads to uncertainty in the quantity of power generated Also, the wave direction and direction of ocean currents all limit the amount of power generated by this method. However, in spite of challenges, it can be regarded as a reliable source of energy because the ocean currents are always moving.
Learn more about wave power:brainly.com/question/1362067
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