-- The volume of water is (1.5 m² x 7 m) = 10.5 m³
10.5 m³ = 10,500 liters
Water mass = (10,500 liters) x (1 kg/liter) = 10,500 kg.
-- "Force of gravity on the water"
= Weight of the water = (10,500 kg) x (9.8 m/s²) = 102,900 newtons
-- Pressure on the bottom of the tank =
(102,900 newtons) / (1.5 m²)
= 68,600 nt/m² = 68,600 pascal .
Answer:
Explanation:
Natural length of the string is given as
length of the string while block is hanging on it
extension in length is given as
now we have strain in the string is given as
similarly we will have cross-sectional area of the string is given as
now the stress in the string is given as
Now Young's Modulus is given as
C.-2 miles per hour per second
Explanation;
Acceleration = change in velocity / time
Acceleration = (final velocity - initial velocity )/time
Acceleration = (v - u)/t
Given: u = 20 miles per hour, v = 10 miles per hour
t = 5 seconds
Acceleration = (10 - 20)/5
Acceleration = -10/5
Acceleration = -2 miles per hour per second
A curved line on a position/time graph shows that the speed is changing.
So right there, we know there is acceleration.