A young boy pulls a 18 kg box with a force of 45 N directed at an angle of 30 degrees below the axis. What is the x component of the force? What is the acceleration of the box? What is the vertical component of the force? What is the force of gravity on the object? What is the normal force acting in the object?

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final

If element x has 99 protons how many electrons does it have

Atoaster oven has a resistive heating element. the average rate at which it dissipates energy as thermal energy is 1.00 \(\rm kw\). in the united states, emf amplitude in household circuits is \(\mathcal e_{\max}\) = 170 \({\rm \; v}\) and the \(\rm ac\) oscillation rate is 60 \(\rm hz\). part a what is the root-mean-square current through the heating element?