How can you stay safe on the Internet? A. Create a screen name that includes your first and last name.
B. Do not talk to people you know online.
C. Do not share any personal information.
D. Share your parents' information.

The volume of a gas is halved during an adiabatic compression that increases the pressure by a factor of 2.5. what is the specific heat ratio? show the math steps .

The discovery of the electron as a subatomic particle was a result of

Ahot-air balloon takes off from the ground traveling vertically with a constant upward acceleration of magnitude g/4. after time interval δt, a crew member releases a ballast sandbag from the basket attached to the balloon. how many seconds does it take the sandbag to reach the ground? (express your answer in terms of δt)