A black hole can be considered a star that has ...

formed new stars

collapsed into itself

changed into a brighter star

disintegrated into stellar dust

An electron is to be accelerated from a velocity of 5.00*106 m/s to a velocity of 9.90*106 m/s. through what potential difference must the electron pass to accomplish this

How much time elapses from when the first bit starts to be created until the conversion back to analog begins

Which two objects have stored energy? 1. a ball rolling on the ground 2. a small rock sitting on top of a big rock 3. a stretched rubber band 4. a stone lying on the ground

Water's states of matter include steam, liquid water, and ice. What about water is the same in these states? What can you conclude about what changes and what does not change during a change of state?

A dog has a mass of 60kg and an acceleration of 2m/s/s. What is the force of the dog?

An object has a kinetic energy of 275 j and a momentum of magnitude 25.0 kg · m/s. find the (a) speed and (b) mass of the object.

with the wind a driver travels 300 mies in 5 hours. The return trip against the wind take the driver 6 hours. At what rate would thedriver travel without any wind What is the rate of thew ind?

How does sound travel from your vocal cords to someone's ear?

Select all the correct answers. Copper is listed in the 29th position in the periodic table. It's used for conducting electricity. What is copper? a metal a metalloid a nonmetal a noble gas an element

Neutron stars are smaller in size than less massive white dwarfs. a. True b. False