Clifford is an astronomer who studies the movement of stars. What types of tools does Clifford likely have in his office that help him study the movement of stars?

A meter sticks and protractors
B rubber bands and paper clips
C rulers and measuring tapes
D telescopes and cameras

Give your knowledge of these things in your paper, you will compare and contrast analog and digital signals to determine which is more reliable for encoding and transmitting information. you’ll compare these features: signal shape numerical values for signal measurements amount of data that can be transmitted energy requirements privacy and security (ability of the signal to be encoded in a secret code) clarity of signal in the space provided, write down what you already know about any of these features. if you’re not sure, write down questions you might have about the features.

Astone weighing 1.5 kilograms is resting on a rock at a height of 20 meters above the ground. the stone rolls down 10 meters and comes to rest on a patch of moss. the gravitational potential energy of the stone on the moss is joules.

Estimate of the number of stars in our galaxy