After a massive-star supernova, what is left behind?

a. always a white dwarf

b. either a neutron star or a black hole

c. always a neutron star

d. either a white dwarf or a neutron star

e. always a black hole

Thermodynamics is the study of the relationship between thermal energy and mass. other forms of energy. types of engines. temperature.

What do you need to know to be able to determine how far a projectile travels horizontally?

How is electron affinity different from electronegativity

Evidence that supported the hypothesis of continental drift included fossils, land features and ___. A: ocean currents B: solar activity C: climate data D: presence of bacteria

The equation for momentum is p=mv. Which letter represents the momentum? Question 2 options: p m v

Is work done if you carry a book across the room at a constant velocity? a. No, the force applied is parallel to the direction of motion. b. Yes, the force applied is parallel to the direction of motion. c.

8. A car moving at 35 m/s has 675 joules of KE. What is the mass of the car?

What force works against gravity as water infiltrates the soil and moves underground?

When is it safe for you to place a construction load on a concrete structure

You have two pendulums with cords that are exactly the same length. one is on earth (with an acceleration due to gravity of 9.81 meters/second2) and the other one is on the moon (with an acceleration due to gravity of 1.63 meters/second2).