Clara and Eli used materials they could find at home to make a simple seismograph, As Clara pulls the strip of paper through the seismograph, Eli gently shakes the table.
Make a prediction. What will happen to the paper as Eli shakes the table?

Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec

Modern physics a photon emitted from an excited hydrogen atom has an energy of 3.02 electron volts. which electron energy-level transition would produce this photon? a. n=1 to n=6 b. n=2 to n=6 c. n=6 to n=1 d. n=6 to n=2 i chose b but the correct answer is d can someone tell me why? and what's the difference?

Ihave a density of 1.61g/cm^3 and a mass of 28g. find the missing value