If a particle in an electric field E experiences a force F, what also must be true? A. The particle has a nonzero charge.

B. The particle is positively charged.

C. The particle is negatively charged.

D. The particle is moving.

Aheat engine that operates on a carnot cycle has an efficiency of 0.420 when its low-temperature reservoir is at 10 ∘c.part aby how many degrees celsius must you increase the temperature of the high-temperature reservoir to increase the efficiency to 0.600 if you continue to use the same low-temperature reservoir?