Answer:
40
Explanation:
If it is a flat mirror, the reflection and incidence are the same -- 40 degrees.
If it is anything else, more information is needed.
Answer:
During its trajectory the cannon ball will have kinetic and potential energy
E = KE + PE
The maximum value of PE will occur when the cannon ball was fired straight up - for other trajectories PE will be less because of translational KE
So E = M g h = 1/2 M v^2 for maximum height
h = v^2 / (2 * g) = 400 / (2 * 9.8) = 20.4 m
Answer:
Explanation:
Given
Pressure drop
inlet diameter
Outlet diameter
density of water
Suppose and be the inlet and outlet velocity
According to continuity equation
where A=cross-section of Pipe
thus
Also from Bernoulli's Equation
Answer:
66.42 N
Explanation:
Torque is defined as the product of force and the perpendicular distance.
Where, r be the distance, f be the force and θ be the angle between the force vector and the distance vector
Case I :
F = 53 N, r = 28 cm = 0.28 m, θ = 90°
So,
case II :
F = ?, r = 0.28 m, θ = 53°
Let the force be F for the same toque.
F = 66.42 N
Thus, the force required is 66.42 N.
The Stratosphere contains the highest concentration of the ozone, this is because the ozone is located here. The Thermosphere has the highest average air temperature also seen as the hot layer, and the Mesosphere is the lowest average sir temperature.