Which variable stars have pulsation periods between 1.5 hours in 1.2 days

In what direction does an applied force move an object

What is the weight of a feather (mass = 0.0001 kg) that floats through earth's and the moon's atmospheres?

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