When a horse pulls a cart.. A. the system can not accelerate because the cart pulls back on the horse

B. a horse and wagon would not be considered a system

C. the system accelerates because the horse pulls on the wagon

D. the system accelerates because the horse pushes against the ground

carla slowed down in the beginning of her trip, stopped, and then sped up

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27