A car rolls down a ramp in a parking garage. The horizontal position of the car in meters over time is shown below.
Position
(meters)
15+
12-
9+
6+
3+
Time
Yseconds)
4
00
12 16
20
24
-3+
-bt

Explain why electric current cannot exist if a current doesn't have a voltage source.

Adisk with a radius of r is oriented with its normal unit vector at an angle q with respect to a uniform electric field. which of the following would result in an increase in the electric flux through the disk? check all that apply? a. increasing the area of the disk b. decreasing the given orientation angle of the disk c. decreasing the strength of the electric field d. increasing the given orientation angle of the disk, but not exceeding an angle of 90

Which of the following is a measure of the amount of light a star directly emits?               a.  luminosity    b.  intensity    c.  wavelength    d.  brightness