Answer:
The answer to the question is
Momentum
Explanation:
Momentum in physics refer to the attribute that a body has by virtue of its mass and velocity. It is found by multiplying the mass of the moving object and the velocity, hence
Momentum = Mass × Velocity = m·v
Newton first law of motion states that the force acting on an object is proportional to the rate of change of momentum produced
Therefore when we find the momentum of the two cars, the one that has the greater momentum will require the most force to stop it.
Momentum is a physics term; it refers to the quantity of motion that an object has. A sports team that is on the move has the momentum. If an object is in motion (on the move) then it has momentum
Momentum
Answer:
Answer:
43.4J
Explanation:
We know that
Work done = total heat energy
But work done is force x distance
=> F = 19 x8.6 = 163.4 J
So the total heat. Will be Heat of cube + heat of floor = 163.4J
So that heat of floor will now be
floor = 163.4 J - 120 J = 43.4 Joules
Explanation:
Answer:
D. An alloy of iron and carbon
Explanation:
Because iron and carbon are both pure substance.
Answer:
the helis speed increased its speed by 35 m/s. Unless you are asking me what was the speed per second. if you were asking me for the speed per second then that would be a different answer
Explanation:
Answer:
The Power output from Turbine B with the doubled blade will be X4 of the power output from Turbine A.
Explanation:
The Power generated by a wind turbine is governed by the equation:
P=0.5ρAV³
Where ρ= Air Density
A= Swept Area of the Blade =πr²
V= Wind Velocity
If they are subjected to the same wind, Air Density and Wind Velocity will be equal
For both turbines,
Let Air Density=1
Wind Velocity=1
Power from Turbine A = 0.5X1XπX1²=0.5π
Power from Turbine B (radius=2) = 0.5X1XπX2²=2π
Power from Turbine B/Power from Turbine A = 2π/0.5π=4