A mass attached to a spring oscillates with a period of 4 sec. After 4 kg are added, the period becomes 6 sec. Assuming that we can neglect any damping or external forces, determine how much mass was originally attached to the spring.

How is the gravitational force related to the distance between two objects?

Based on the concept of the wave-like nature of light, huygens' theory of light postulates that the more light was "bent" by a substance the slower it would move while traversing across that substance. a) deflection b) interference c) refraction d) resonance

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