Help please? Im legit failing physics Joanna sets her physics book on the table. Earth’s gravity pulls the book downward with a force of 24N. How much force does the book exert on the Earth?

An implanted pacemaker supplies the heart with 72 pulses per minute, each pulse providing 6.0 v for 0.65 ms. the resistance of the heart muscle between the pacemaker’s electrodes is 550 ω. find (a) the current that flows during a pulse, (b) the energy delivered in one pulse, and (c) the average power supplied by the pacemaker.

When a 5.0kg cart undergoes a 2.2m/s increase in speed, what is the impulse of the cart

Which feature of a heating curve indicates a change ofn state