Study the heating curve shown.

Which statement is best supported by the information in the heating curve?

At segment T-U, the substance changes from a liquid to a gas and does not change temperature.

At segment T-U, the substance changes from a gas to a liquid and changes temperature.

At segment Q-R, the substance releases heat and increases in temperature.

At segment Q-R, the substance absorbs heat and decreases in temperature.

The answer was: At segment T-U, the substance changes from a liquid to a gas and does not change temperature.

Which planet do you think would be easiest for humans to colonize some day?

A55-kg pilot flies a jet trainer in a half vertical loop of 1200-m radius so that the speed of the trainer decreases at a constant rate. knowing that the plane has a speed of 550 km/h at point a, and the pilot experiences weightlessness at point c (i.e., the normal force from the seat bottom is zero), determine (a) the deceleration of the plane, (b) the force exerted on her by the seat of the trainer when the trainer is at point b.

Aweather forecaster uses doppler radar to predict the track of a storm near the town of meadowlands. when the doppler signal is pointed at the storm from the town's center, the frequencies of the waves appear to be decreasing. what should the weather forecaster predict? a. that the storm will move around the edges of meadowlands without hitting the tosis center o b. that residents should be prepared, because it is impossible to know whether the storm will hit o c. that the storm is moving toward meadowlands and that residents should be prepared d. that the storm is moving away from meadowlands and is not likely to hit the town