Astudent pushes a 10 kg box with a force of 30 n at an angle 45 degrees below the horizontal. the box experiences 21.2 n of force against the motion. what is the acceleration of the box?

The variables for this experiment include mass, volume and the materials in the various balls, as well as their densities. in part iii, you will be investigating the questionable baseball. use the drop-down menus to complete the sentences and identify the independent and dependent variables. in part iii, the independent variable, the one that is intentionally manipulated, is . in part iii, the dependent variable, the one that you measure the response in, is

5g of ammonium nitrate was dissolved in 60g of water in an insulated container. the temperature at the start of the reaction was 23.0°c and at the end it was 19.0°c. calculate the energy absorbed by the reaction.

J. j. thomson’s experiment disproved the theory that an atom