To determine how the expansion rate of the universe has changed over time, astronomers directly measure the for a sample of Type Ia supernovae in distant galaxies.

According to newton's second law, when the same force is applied to two objects of different masses, a the object with greater mass will experience a great acceleration, and the object with less mass will experience an even greater acceleration, b. the object with greater mass will experience a smaller acceleration, and the object with less mass will experience a greater acceleration, c. the object with greater mass will experience a greater acceleration, and the object with less mass will experience a smaller acceleration, d. the object with greater mass will experience a small acceleration, and the object with less mass will experience an even smaller acceleration.

Gunpowder residue is most likely to show up where on a shooters hands

Clothes dryer uses about 7 amps of current from a 240 volt line. how much power does it use?