Q = mcθ
Where m = mass of water in kg.
c = specific heat capacity in kJ/kg⁰C, c for water = 4200 kJ/kg⁰C
θ = temperature rise in ⁰C
Q = 100*4200* 20 Note here the temperature rise is 20 ⁰C
Q = 8 400 000 J
In calories, 4.2 J = 1 Calorie
= 8 400 000 / 4.2 = 200 000
Q = 200 000 Calories
Explanation:
When a solution is saturated it means, No more solute can dissolve in solvent
Kinetic energy = (1/2) x (mass) x (speed)²
8 joules = (1/2 x 1 kg) x (speed)²
Divide each side by 1/2kg : 8 joules / 0.5 kg = speed²
Take the square root of each side:
speed = √[ (8 kg-m²/sec²) / (0.5 kg) ]
= √ (8 m²/sec²)
= √8 m/s = 2.83 m/s (rounded)
You measure the total distance the bike travels, and the total time it takes to travel that distance. You then divide the distance by the time
Answer:
The uncertainty in the volume of the sphere is
Solution:
As per the question:
Measured radius of the sphere, R = 135.4 m
Uncertainty in the radius,
We know the volume of the sphere is:
We know that the fractional error for the given sphere is given by:
where
= uncertainty in volume of sphere
Now,
Now, substituting the suitable values: