You are given four ammeters A, B, C and D having least counts mentioned below:
(1) Ammeter A with least count 0.25 A
(ll) Ammeter B with least count 0.5 A
(Ill) Ammeter C with least count 0.05 A

(IV) Ammeter D with least count 0.1 A
Which of the ammeters would you prefer for doing an
experiment to determine the equivalent resistance of two
resistances most accurately, when connected in parallel?

(a) Ammeter A
(b) Ammeter B
(c) Ammeter C
d) Ammeter D

The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force

Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is

Samir watches a 100-minute movie on his spaceship. maria's spaceshipe flies in the same direction as samir's spaceship but she observes his move to last 125 minutes and his spaceship to be 40 m long. how long does samir observe his own spaceship to be? according to an observer on earth, planet x is stationary. maria and samir depart earth on their spaceships at the same time, each flying at 0.5c. maria flies toward planet x and samir flies in the opposite direction. according to maria, her voyage to planet x takes 9 years. how many years does marias voyage take according to samir?