According to the principle of equivalence
A)mass and energy are two forms of the same thing.
B)space and time are two forms of the same thing.
C)electricity and magnetism are two forms of the same thing.
D)observations made in an accelerating reference frame are indistinguishable from those made in a gravitational field.
E)all of these

Question

Quizplus · Accepted Answer

The principle of equivalence states that observations made in an accelerating reference frame are indistinguishable from those made in a gravitational field. This means that gravity and acceleration are fundamentally equivalent, and that gravity can be thought of as a curvature of spacetime caused by the presence of mass and energy. While concepts such as mass and energy are related to the principle of equivalence, they are not actually forms of the same thing in the way that gravity and acceleration are equivalent.

According to the Principle of Equivalence