In the late 80s, astronomers discovered stars even cooler than M stars, which previously were the coolest spectral type. Astronomers have these cool stars a new spectral type, L. If you wanted to go out and find more such type L stars, what kind of instrument should you use

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

Which terms describe the purpose of antennas on devices that use radio waves? transmit and receivemodify and amplifyamplify and receivemodify and transmit

Alead ball is dropped into a lake from a diving board 5m above the water . it hits the water with a certain velocity and then sink with constant velocity in bottom . it reaches the bottom 5 second after it is dropped if g= 10m/s2 . find depth of the lake and average velocity of the ball ?