A hang glider and its pilot have a total mass equal to 131 kg. While executing a 360° turn, the glider moves in a circle with a 9 m radius. The glider's speed is 15 m/s. (Assume the glider turns along the horizontal plane.)

Which surface feature of the moon is characterized by mountainous areas? terrae craters maria regolith

Why can blue light and yellow light combine to produce white light? question 17 options: they are both primary colors of light. they absorb each other's wavelengths. because blue, yellow, and white are primary colors. they are complementary colors of light.

Aresistor with an unknown resistance is connected in parallel to a 9 ω resistor. when both resistors are connected in parallel to an emf source of 21 v, the current through the unknown resistor is measured with an ammeter to be 4 a. what is the resistance of the unknown resistor? answer in units of ω.