Answer:
The x component of this vector is (-1î) unit
Explanation:
Vector position of point 1 = x₁ = 5 (cos (-π/3)î + sin (-π/3)j) = (2.5î - 4.33j)
Vector position of point 2 = x₂ =3(cos 60°î + sin 60°j) = (1.5î + 2.598j)
Vector joining the two point, x₁₂ = x₂ - x₁ = (1.5î + 2.598j) - (2.5î - 4.33j) = - 1.0 î + 6.928j
The x component of this vector is -1î unit.
The efficiency of an ideal Carnot heat engine can be written as:
where
is the temperature of the cold region
is the temperature of the hot region
For the engine in our problem, we have
and
, so the efficiency is
Answer:
Explanation:
When a force is applied to an object over a certain period of time, it is said to apply an impulse to the object. The magnitude of the impulse is given by:
J=F*Δt
When an impulse is provided to an object, the momentum of the object will change, as in:
J=Δp=
So given:
Initial momentum
Applied force
J=
F*Δt=
The answer is A. They are both processes in which water is changed into water vapor.