Answer:
D.
boulder-sized rocks that come from the asteroid belt
Surveys are considered the most reliable way to gather data
Answer:
Explanation:
The centripetal force acting on the car must be equal to mv²/R, where m is the mass of the car, v its speed and R the radius of the curve. Since the only force acting on the car that is in the direction of the center of the circle is the frictional force, we have by the Newton's Second Law:
But we know that:
And the normal force is given by the sum of the forces in the vertical direction:
Finally, we have:
So, the minimum value for the coefficient of friction is 0.27.
Answer:
Magnetic Field Strength
Explanation:
The effect of the splitting of the spectral lines of an atom into several of its components when a static magnetic field is present is referred to as Zeeman Effect.
The spectral lines here corresponds to the various discrete energy levels in the sun at which the emission and absorption of the different energy levels of the sun occurs.
The splitting of the spectral lines occurs due to the presence of the strong magnetic field on the surface of the sun.
Thus the Zeeman Effect is used to measure the magnetic field strength on the sun's surface.
Acceleration due to gravity
