Answer:
The water will flow at a speed of 3,884 m/s
Explanation:
Torricelli's equation
v =
*v = liquid velocity at the exit of the hole
g = gravity acceleration
h = distance from the surface of the liquid to the center of the hole.
v = = 3,884 m/s
Answer:
0,33 Volt
Explanation:
v = 340 000 m/s - Initial electron speed
m = 9.1·10⁻³¹ kg - Mass of an electron
W = m·v² / 2 - Initial kinetic energy of an electron
W = 9.1·10⁻³¹·(340 000)² /2 ≈ 5.26 · 10⁻²⁰ J (1)
Q = 1.6·10⁻¹⁹ C - Electron charge modulus
The work of the electric field:
A = Q·V (2)
Equate (2) and (1):
Q·V = W
V - Electric field potential difference
V = W / Q = 5.26 · 10⁻²⁰ / 1.6·10⁻¹⁹ ≈ 0,33 Volt
Answer:
we approach a maximum or minimum the values of the ordinate are closer and closer and when passing this point the values change their trend
Explanation:
The reason for this process occurs because as we approach a maximum or minimum the values of the ordinate are closer and closer and when passing this point the values change their trend if they were rising, they begin to fall and if they were falling they begin to rise. Therefore the maximum point is a point of inflection of the curve since its trend changes.
Another way of looking at this process is that mathematically the point where there is a maximum or a minimum corresponds to the point where the first derivative is equal to zero, this is the slope of the line is horizontal, so the points before after correspond to values with slope of different sign.
-- 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 .
F=ma
f= 66 x 2
The answer is f = 132 N
You get it by
F=ma
F=66 X 2