Calculate the magnetic field strength needed on a 220-turn square loop 20.0 cm on a side to create a maximum torque of 315 N · m, if the loop is carrying 30 A.

What if? if the temperature near the cliff suddenly falls to 0°c, reducing the speed of sound to 331 m/s, what would the initial speed of the rock have to be (in m/s) for the soccer player to hear the sound of the splash 2.90 s after kicking the rock?

Classify each possible hypothesis about a medicinal aloe vera plant as falsifiable or non-falsifiable. aloe vera gel is the best natural skin moisturizer. aloe vera gel can heal wounds by boosting cell renewal. aloe vera juice tastes better than carrot juice. drinking aloe juice can reduce the risk of lung cancer.

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity