Answer:
Una secadora de cabello tiene una resistencia de 10Ω al circular una corriente de 6 Amperes, si está conectado a una diferencia de potencial de 120 V, durante 18 minutos ¿Qué cantidad de calor produce?, expresado en calorías
Answer:
The constriction causes the mercury column to break under tension, leaving a vacuum between the bottom of the column and that in the bulb, and the top of the column stays still at the position reached in the body - a "peak hold" system.
The most effective forces on the object are the backward force of air resistance relatively very small in magnitude, and the force of gravity. Because the spiral path of the satellite is not perpendicular to the gravitational force, one element of the gravitational force pulls forward. at the satellite to do fantastic work & make its speed increase.
<h3>What is called gravitational force?</h3>
Gravity, additionally referred to as gravitation, is a force that exists amongst all material gadgets withinside the universe. For any objects or particles having nonzero mass, the force of gravity tends to draw them in the direction of each other. Gravity operates on objects of all sizes, from subatomic particles to clusters of galaxies.
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Answer:
The total amount of water that enters the tank is:
250 gal/min + 100 gal/min = 350gal/min.
Then, if the level of the water remains constant, this means that the water leaves the tank at a rate of 350gal/min.
We know that the diameter of the pipe is 8 inches, then the area of the pipe is:
A = pi*(d/2)^2 = 3.14*(4in)^2 = 50.24in^2
now, the flow can be calculated as:
Q = v*A = (velocity*area)
if we want to write our velocity in inches per minute, then we need to write the entering flow in cubic inches:
1 gallon = 231 in^3
then:
350gal/min = (350*231) in^3/min = 80,850 in^3/min.
Then the water that leaves the tank must be the same amoun, we have:
Q = 80,850 in^3/min. = v*A = v*50.24in^2
v = (80,850in^3/min)/50.24in^2 = 1609.3 in/min.
The velocity of the flow leaving the tank is 1609.3 in/min.
Answer:
The resultant velocity is <u>169.71 km/h at angle of 45° measured clockwise with the x-axis</u> or the east-west line.
Explanation:
Considering west direction along negative x-axis and north direction along positive y-axis
Given:
The car travels at a speed of 120 km/h in the west direction.
The car then travels at the same speed in the north direction.
Now, considering the given directions, the velocities are given as:
Velocity in west direction is,
Velocity in north direction is,
Now, since are perpendicular to each other, their resultant magnitude is given as:
Plug in the given values and solve for the magnitude of the resultant.This gives,
Let the angle made by the resultant be 'x' degree with the east-west line or the x-axis.
So, the direction is given as:
Therefore, the resultant velocity is 169.71 km/h at angle of 45° measured clockwise with the x-axis or the east-west line.