An unmanned spacecraft leaves for venus. which statements about the spacecraft's journey are true? a. the weight of the spacecraft keeps changing. b. the mass keeps changing c. the weight remains the same d. the mass remains the same e. the gravitational pull on the spacecraft remains the same

If a refrigerator is a heat pump that follows the first law of thermodynamics, how much heat was removed from food inside of the refrigerator if it released 380j of energy to the room?

What is special about a dc circuit ?

This chart shows characteristics of three different types of waves. which statement is best supported by the information in the chart? wave x and wave y are mechanical waves, and wave z is an electromagnetic wave. wave x and wave y are electromagnetic waves, and wave z is a mechanical wave. wave x and wave z are electromagnetic waves, and wave y is a mechanical wave. wave x and wave z are mechanical waves, and wave y is an electromagnetic wave.