1. What is the frame of reference for a plane moving at 500 km/h? O A the clouds
O B the other planes in the sky
O C the ground
O d the passengers

Write down two additional questions about earth's magnetic field that will make your presentation more informative.

Atriangle with equal sides of length 10 cm has -2.5-nc charged objects at each corner. part a determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. horizontally rightward vertically downward vertically upward horizontally leftward

Relative to the ground below, how many joules of potential energy does a 1000-kg boulder have at the top of a 5-m ledge?