Answer:0.210 ft/min
Explanation:
Given
Length of trough 
width of base 
height of triangle
From Similar triangles property


volume of water in time t



differentiating

at 



The correct answer is B (Inertia)
We define inertia as the resistance to change of the state of motion. That is, a body tends to remain in its state of motion or rests unless an external for acts on it. The quantity depends on the mass of the body. If the body is heavy, it requires a large force to overcome the inertia.
Refractive index(n)= speed of light in vacuum/ speed of light in medium.
Since refractive index is 1.11, and usually we know that the speed of light is 300,000km/s, simply divide 300,000km/s over 1.11. That is, 270,270.2703 when simply rounding, its 270,270 km/s.
Answer:
98.4 N
Explanation:
Given that the body weighs 800 N on earth.
Thus,
Weight = mass x acceleration due gravity
i.e W = mg
800 = m x 10
m = 
= 80 kg
The mass of the body is 80 kg.
To be able to determine its weight on the planet, we have to first calculate the gravitational pull of the planet.
But,
g = 
Where: G is the Newton's universal gravitation, M is the mass of the planet and r is the radius of the planet.
g = 
= 
= 1.2275
g = 1.23 m/
Thus,
Weight of the body on the planet = mg
= 80 x 1.23
= 98.4 N
The weight of the body on the planet is 98.4 N
Answer:
option 'b' and 'c'
Explanation:
when we throw ball in upward direction.
acceleration on the body will never be zero because there will always be acceleration due to gravity i.e. 'g' will be acting on it.
and force of 'mg' will also be acting on the body, where m is the mass of the body.
so,
at the top the parameters which will be zero will be velocity and speed.
at the top most point the ball will change it's direction for that velocity will have to be zero at that point.