Answer:
Rt = 908.25 [ohm]
Explanation:
In order to solve this problem, we must remember that the resistors connected in series are added up arithmetically.
In this case, R2 and R3 are in series therefore.
R₂₃ = 200 + 470
R₂₃ = 670 [ohm]
Now this new resistor (R₂₃) is connected in parallel with the resistor R4. therefore we must use the following arithmetic expression, to add resistances in parallel.
In this way R₁, R₅ and R₄₋₂₃ are connected in series.
Rt = R₁ + R₅ + R₄₋₂₃
Rt = 150 + 270 + 488.25
Rt = 908.25 [ohm]
Answer: - 30 miles / h^2
Explanation:
This problem requieres that you assume uniformly accelarated motion.
1) Data:
Vo = 60 miles / h
Vf = 30 miles / h
t = 12 min
a = ?
2) Formula:
Vf = Vo + at
3) Clear t:
a = [Vf - Vo] / t
4) convert t = 12 min to hours
t = 12 min * 1 h / 60 min = 0.2 h
5) Substitute the data into the formula
a = [30 miles/h - 60 miles/h]/0.2 h = - 30 miles / h^2
The negative sign means that the car decelerated.
Answer: - 30 miles / h^2
The revolution of the moon going around earth is what causes the phases of the moon. It depends on exactly what point the moon is facing the earth and how much light is being produced onto it that causes the different phases!
The angular velocity of the wheel at the bottom of the incline is 4.429 rad/sec
The angular velocity (ω) of an object is the rate at which the object's angle position is changing in relation to time.
For a wheel attached to an incline angle, the angular velocity can be computed by considering the conservation of energy theorem.
As such the total kinetic energy (K.E) and rotational kinetic energy (R.K.E) at a point is equal to the total potential energy (P.E) at the other point.
i.e.
P.E = K.E + R.K.E
Therefore, we can conclude that the angular velocity of the wheel at the bottom of the incline is 4.429 rad/sec
Learn more about angular velocity here:
brainly.com/question/1452612
Answer:
Potential gravitational energy is the energy that the body has due to the Earth's gravitational attraction. In this way, the potential gravitational energy depends on the position of the body in relation to a reference level.
Explanation: