Explanation:
Gravitational Potential Energy can be calculated with the following formula:
Where m is mass, g is Gravitational Field Strength, and h is height. GFS on Earth is always 9.81, the combined mass of the cyclist and the bicycle is 70, and the height is 120. Multiplying these values together, we get:
82,404J.
Answer:
720 Cal
Explanation:
Quantity of heat required to melt a solid is ;
Q₁ = mΔ
Where
Q₁ = Quantity of heat to melt ice
m = mass of the solid
Δ = enthalpy of fusion (Latent heat of fusion)
Q₁ = 1 g × 80 cal/g
Q₁ = 80 cal
The amount of heat required to melt Ice is 80J
The ice is now water at 0°C. We need to calculate the amount of heat needed to boil the water from 0°C to 100°C
Q₂ = mcΔT
where;
Q₂ is quantity of heat to boil water
m is mass of water
c is specific heat capacity of water
ΔT is change in temperature
Q₂ = 1 × 1 × (100 - 0)
Q₂ = 1 × 1 × 100
Q₂ = 100 cal
We need to calculate the amount of heat needed to vapourize the water.
Q₃ = mΔ
Where
Q₃ = Quantity of heat to vapourize water
m = mass of the water
Δ = enthalpy of vapourization (Latent heat of vapourization)
Q₃ = 1 × 540
Q₃ = 540 cal
The total amount of heat energy that is required to vaporize a 1.0-g ice cube at 0°C
Q = Q₁ + Q₂ + Q₃
Q = 80 + 100 + 540
Q = 720 cal
Answer:
True
Explanation:
We are given that all actinoids
General configuration of actinoids series
Actinoids element are
Ac=89=
Th=
We can see that period of actinoid series =7
Electron orbit=period=7
Hence,the statement is true.