The answer to the question above is letter D. The separation of positive and negative charges due to electric field is called an induced charge. It is a movement of electrons in a substance caused by the electric field of a nearby charged object.
Answer:
C) seems to be the correct one
Each alpha particle emitted decreases the mass of the nucleus by 4 and decreases the atomic number by 2.
Also, each beta particle will increase the atomic number by 1.
So if C emits 5 alpha particles the atomic mass decreases by 20 and the atomic number decreases by 10. Then emission of 2 beta particles brings the atomic number up to minus 8.
So a total of 7 particles have been emitted and the number of alpha particles emitted exceeds the number of beta particles emitted.
Answer: Option (E) is the correct answer.
Explanation:
Latent heat is defined as the amount of heat required by per mole of a substance in order to change its state.
And, latent heat of freezing (fusion) is defined as the energy required for the phase change between a liquid and a solid without any change in their temperature.
Therefore, at zero degrees Celsius energy absorbed by the ice will be consumed in breaking the bond between the water molecules held together in the solid state.
Thus, we can conclude that when a block of ice at zero degrees Celsius melts, the ice absorbs energy but does not change its temperature.
<span>It takes 80 calories to melt 1 gram of ice. If 1 g of ice (at 0 degrees Celsius) is given 80 calories, it will melt and the final temperature of the water will be 0.
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Answer:
F = 2.1 10³ N
Explanation:
Young's modulus is defined as the tensile strength (pressure) between the unit strain, whose equation is as follows:
Y = P / (ΔL / L)
Body pressure is defined as the relationship between force and area over which it is applied.
P = F / A
Let's replace and clear the force
Y = (F / A) / (DL / L
Y ΔL / L = F / A
F = Y A ΔL / L
Let's calculate the area
. The tendon is shaped like a cylinder, so the area is the circle
A = π R²
R = d / 2 = 5.90 10⁻³ / 2
R = 2.95 10⁻³ m
A = π (2.95 10-3)²
A = 2,734 10⁻⁵ m²
Let's calculate deformation
ΔL = 0.149 -0.14
ΔL = 0.009 m = 9 10⁻³ m
Let's replace and calculate
F = 1.20 10⁹ 2,734 10⁻⁵ 9 10⁻³ / 0.14
F = 2.1 10³ N
