In analyzing distances by applying the physics of gravitational forces, an astronomer has obtained the expression. R = 140 × 109 mUse your calculator to evaluate R. a. 3.87 x 10-12 mb. 1.72 × 1011 m c. 2.58 x 1011 m d. 1.49 x 1011 m

Match these items. 1. coulombs __force 2. ohms __emf 3. centimeters __resistance 4. newtons __charge 5. volts __length

In order to do work, the force vector must be question 1 options: in a different direction than the acceleration vector. in a different direction than the displacement vector. in the same direction as the displacement vector and the motion. in the same direction as the acceleration vector.

When the displacement of a mass on a spring is 12a the half of the amplitude, what fraction of the mechanical energy is kinetic energy? at what displacement, as a fraction of a, is the mechanical energy half kinetic and half potential?