If ozone layer is completely removed then many severe effects can be seen in the temperature of the earth.
- The ice in the Antarctica starts getting melt which increases the level of water in ocean and proved to be harmful for the coastal areas.
- The rise in temperature also lead to long summers and high temperatures ranges from 50° C to 65° C .
Explanation:
The removal of ozone layer will not only effect the temperature but also had a great impact on human and animals such as
- The harmful rays will directly fall on earth in the absence of ozone cause cancer in animals, plants and humans.
- These harmful rays weaken the immune system.
- Lead to disturbance of food chain in following ways : -
- It will led to increase in herbivores as a result, the number of plants will decrease and the amount of oxygen will also decrease in the atmosphere.
- The carnivores keep the population of other carnivores and herbivores in check. This will disturb the balance of ecosystem.
- The concentration of harmful chemicals is maximum at the last trophic level . Because these chemicals are not degradable, these get accumulated progressively at each trophic level.
The term precision is how repeatable the experiment is
Accuracy is how close to the right answer you are.
Answer:
w=255
Explanation:
The change in internal energy is given by the first law:
ΔE = Q - w
where ΔE is the change in internal energy of the system
q is the heat added to the system
w is the work done *by* the system on the surroundings
So, for the first phase of this process:
ΔE = Q - w
Q=160J
w=309J
ΔE = 160J - 309J = -149J
To bring the system back to its initial state after this, the internal energy must change by +149J (the system myst gain back the 149 J of energy it lost). We are told that the system loses 106 J of heat in returning to its initial state, so the work involved is given by:
ΔE = Q - w
+149J = -106J - w
255J = -w
w = -255J
Answer:
Correct answer: Ic₂ = 48 mA = 48 · 10⁻³ A
Explanation:
Given:
U₁ = 12 V DC first battery voltage
Ic₁ = 24 mA = 24 · 10⁻³ A Intensity of current with the first battery
U₂ = 24 V DC second battery voltage
Ic₂ = ? Intensity of current with the second battery
The formula that applies to a simple electric circuit under the Ohm's law is:
R = U / Ic
where R is the total resistance in the electrical circuit and it is constant.
R = U₁ / Ic₁ = U₂ / Ic₂ ⇒ U₁ / Ic₁ = U₂ / Ic₂ ⇒ Ic₂ = (U₂ · Ic₁) / U₁
Ic₂ = (24 · 24) / 12 = 48 mA
Ic₂ = 48 mA = 48 · 10⁻³ A
God is with you!!!