While on vacation at the beach, Sarah noticed that during the day the sand was really hot, the ocean cool, and a breeze flowed constantly from the ocean towards her hotel. She also noticed that during the night, the ocean felt warmer than the sand and the breeze was reversed, blowing out to sea. Explain the following to Sarah:

1. Why was the sand so much warmer during the day and cooler in the evening

2. Why did the breeze blow towards the hotel during the day

3. Why did the breeze blow out to sea at night

A2.0 μf capacitor and a 4.0 μf capacitor are connected in series across a 0.827-kv potential. the charged capacitors are then disconnected from the source and connected to each other with terminals of like sign together. find the voltage across each capacitor.

Two manned satellites approaching one another at a relative speed of 0.550 m/s intend to dock. the first has a mass of 2.50 ✕ 103 kg, and the second a mass of 7.50 ✕ 103 kg. assume that the positive direction is directed from the second satellite towards the first satellite. (a) calculate the final velocity after docking, in the frame of reference in which the first satellite was originally at rest.(b) what is the loss of kinetic energy in this inelastic collision? (c) repeat both parts, in the frame of reference in which the second satellite was originally at rest. final velocity(d) loss of kinetic energy = ?

Earth's atmosphere is composed of mostly two gases. name the two gases that make up the majority of the atmosphere and use the pie chart to tell the percentages of each.