PLS HELP I WILL MARK U AS THE BRAINLIEST Element C and D are classified under the same group in the Periodic Table. Element C is a white solid and burns in Oxygen. Do you Think element D will burn in Oxygen? Give a reason for your answer.

The earth exerts a gravitational force of 500 n on amy. what is amy’s mass in kg?

Which of these metals are magnetic?

Simon is writing a story about an astronaut whose spacecraft has been boarded by space pirates. the astronaut has her lucky penny in her hand behind her back as the space pirates break into the control room. she has just locked the controls so that the ship is accelerating in the direction of the control room’s ceiling. simon wants the astronaut to use the penny to hit a button on the control panel to turn off the lights and escape. the button is located a short distance behind and below the astronaut’s hands. how should simon use the theory of relativity to describe what the astronaut must do in order to hit the button?