Maria hears on the television that a storm is moving toward her town at a speed of 12 kilometers/hour. The radar shows that the edge of the storm is currently 99 kilometers away. How many hours will it take the storm to reach Maria’s town?

An ideal spring has a spring constant (force constant) of 2500 n/m, is stretched 4.0 cm, how much elastic potential energy does it possess? (a) 3j (b) 0.00j (c) 1j (d) 2j (e) 4j

Which of the following is not a transverse wave? a) soundb) lightc) radiod) all of thesee) none of these

Ahot-air balloon takes off from the ground traveling vertically with a constant upward acceleration of magnitude g/4. after time interval δt, a crew member releases a ballast sandbag from the basket attached to the balloon. how many seconds does it take the sandbag to reach the ground? (express your answer in terms of δt)