Given the following information: Red giants derive their energy not from nuclear fusion of hydrogen, but by fusion of helium. Specifically, a reaction where 3 helium nuclei fuse into 1 carbon nucleus. The mass of a helium nucleus is 6.645x10-27 kg, and the mass of a carbon nucleus is 1.9922x10-26 kg
The mass-energy relation is famously: E = mc2

1) What is the mass of the three helium nuclei? That is: what is 3mHe = ?

Enter your answer in kilograms.

Submit your answer as the coefficient (Y) of the below scientific notation expression:

Y x 10-27 kg

You are about to open a container of soy milk but notice that there are instructions to “shake well before serving.” the soy milk is most likely a

Aperson gives a shopping cart an initial push along a horizontal floor to get it moving, and then lets go. the cart travels forward along the floor, gradually slowing as it moves. consider the horizontal force(s) on the cart while it is moving forward and slowing. which of the following statements is correct? (a) both a forward and a backward force are acting on the cart, but the forward force is larger. (b) only a forward force is acting which diminishes with time. (c) both a forward and a backward force are acting on the cart, but the backward force is larger. (d) only a backward force is acting, no forward force.

Air is contained in a variable-load piston-cylinder device equipped with a paddle wheel. initially, air is at 400 kpa and 17°c. the paddle wheel is now turned by an external electric motor until 75 kj/kg of work has been transferred to air. during this process, heat is transferred to maintain a constant air temperature while allowing the gas volume to triple. calculate the required amount of heat transfer in kj/kg.