At time=0s, the object is at the 21.0-meter position along the roadway. Where is the object at time = 10 s? A) 91 m
B) 70 m
C) 140 m
D) 96 m

electromagnetic waves travel through space with vacuums. give me brainliest if right.

the duration of a photographic flash is related to an rc time constant, which is 0.100 μs for a certain camera.

i think the answer is a and b

i wish you luck

the answer is the first electromagnet (a). this is because it has more coils around the ferromagnetic material. increasing the number of coils increases the surface area in which the metal interacts with the current in the coil. this enables more atoms in the metal to become aligned hence becoming more magnetized.