Answer:
Technician A is correct.
Explanation:
Stroke of the engine means how far is the piston moves during the cycle.It is determined by the crank of the crank shaft. Engine displacement volume is calculated by multiplying length of the stroke to the piston displacement area.
If there are more than one cylinder in the engine, than in that case this number in multiplied by the number of the cylinders inside the engine.
Therefore technician A is correct.
Answer: sum of the electric field energy density and magnetic field energy density.
Explanation:
The total energy stored in an electromagnetic wave is equal to the sum of energy stored in the electric and magnetic fields. In that case, the energy stored per unit volume, or energy density of the electromagnetic wave, is the sum of the electric field energy density and magnetic field energy density.
The distance between the orbits of two satellites is 7.97 m.
Explanation:
Johannes Kepler was the first to propose three laws for the planetary motion. According to him, the orbits in which planets are rotating are elliptical in nature and Sun is at the focus of the ellipse. Also the area of sweeping is same.
So based on these three assumptions, Kepler postulated three laws. One among them is Kepler's third law of planetary motion. According to the third law, the square of the time taken by a planet to cover a specified region is directly proportional to the cube of the major elliptical axis or the radius of the ellipse.
So,
Thus, for the geosynchornous satellite, as the time taken is 24 hours, then the radius or the major axis of this satellite is
Similarly, for the another satellite orbiting in time period of 12 hours, the major axis of this satellite is
So, the difference between the two radius will give the distance between the two orbits, 13.21-5.24 = 7.97 m.
So the distance between the orbits of two satellites is 7.97 m.
Well for you to get 980 Hz you divided 344 m/s with .35 m
We will have the following:
First, we remember that velocity is the change of position with respect to time and this can be seen as the derivative of the position; and that the acceleration is the change of velocity with respect to time and this can be seen as the derivative of the velocity or the second derivative of the position; so:
Then velocity will be:
And finally the acceleration will be:
And thus, when we examine the problem at t = 250s we will have that the acceleration will be 8 units of distance / s^2; this due to the fact that the second derivative is a constant.