A convex lens is known as a diverging lens and a concave lens is known as a converging lens
Indicate whether the statement is true or false
FALSE
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An electron moves with a speed of 3.0 × 104 m/s perpendicular to a uniform magnetic field of 0.40 T. What is the magnitude of the magnetic force exerted on the electron? (e = 1.60 × 10-19 C)
A) 4.8 × 10-14 N B) 1.9 × 10-15 N C) 5 × 10-20 N D) 2.2 × 10-24 N E) 0 N
As a wave-generating object moves through a medium, the waves behind
A) bunch up. B) stretch out. C) neither of these
A cup of water containing an ice cube at 0°C is filled to the brim. The tip of the ice cube sticks out of the surface. As the ice melts, you observe that
A) the cup overflows. B) the water level actually goes down. C) the water level remains the same. D) the cup might overflow but it depends on the actual mass of the ice cube. E) There is not enough information to answer this question.
Is an activation energy required to obtain the reaction in studied in this experiment?