The gap between electrodes in a spark plug is 0.06 cm. In order to produce an electric spark in a gasoline-air mixture, the electric field must reach a value of 3 × 10^6 V/m. What minimum voltage must be supplied by the ignition circuit when starting the car?
1 800 V
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At an instant when a particle of mass 50 g has an acceleration of 80 m/s2 in the positive x direction, a 75-g particle has an acceleration of 40 m/s2 in the positive y direction. What is the magnitude of the acceleration of the center of mass of this two-particle system at this instant?
a. 60 m/s2 b. 56 m/s2 c. 40 m/s2 d. 50 m/s2 e. 46 m/s2
A(n) _______________ occurs when the Moon moves between Earth and the Sun
Fill in the blank(s) with correct word
One of the possible dangers of EMF's are ________
a. radio system interference b. their potential to produce a shock c. biological effect of small magnetic fields d. electrocution
If a hydrogen atom absorbs a photon of the correct wavelength, its electron will move ________ the nucleus.
A. into B. away from C. around D. toward