what are the pros and cons of using A radio telescope, 300 meters in diameter, located in Puerto Rico for observing matter around a black hole; assume that the matter is emitting photons at all wavelengths.

What are the similarities & differences between a thermistor and a light dependent resistor in physics?

Why do different substances have diffrent properties

On mars a rock falls an unknown vertical distance from a resting position and lands in a crater. if it takes the rock 2.5 seconds to fall, how high is the cliff the rock fell from? mars' surface gravity is 3.8 m/s2. a. 9.5 m b. 11.9 m c. 15.2 m d. 23.8 m