A seismograph station recorded the arrival of the first P-wave at 7:32 p. m. from an earthquake that occurred 4000 kilometers away. What time was it at the station when the earthquake occurred? 7:20 p. m.
7:25 p. m.
7:32 p. m.
7:39 p. m.

Asample of aluminum foil contains 8.60 × 1023 atoms. what is the mass of the foil?

As you watch a surfer ride a wave towards the shoreline, what is the shoreline? a) displacement reference b) reference point c) coordinate plane d) cartesian boundary

The diagrams show objects’ gravitational pull toward each other. which statement describes the relationship between diagram x and y? gravity attracts only larger objects toward one another. gravity attracts larger objects only if they are close to one another. if the masses of the objects increase, then the force between them also increases. if distance between the objects increases, then the amount of force also increases.