Which option is an example of chemical energy being transformed into electrical energy? O A. A battery powering a flashlight
OB. A plant storing energy from the Sun in its leaves
OC. A rocket engine igniting its fuel during liftoff
O D. Lightning striking a tree​

When an object is heated it contracts. a. true b. false

What is the average speed of a car that travels 40mph for 1 hour and 60 mph in another hour will mark brainliest

Athin nonconducting rod with a uniform distribution of positive charge q is bent into a circle of radius r. the central perpendicular axis through the ring is a z-axis, with the origin at the center of the ring. a) what is the magnitude of the electric field due to the rod at z = 0? n/c (b) what is the magnitude of the electric field due to the rod at z = infinity? n/c (c) in terms of r, at what positive value of z is that magnitude maximum? r (d) if r = 4.00 cm and q = 9.00 µc, what is the maximum magnitude? n/c