Our sun is in which stage of its life cycle?

A. red giant

B. main sequence

C. white dwarf

D. protostar

Two very quick questions! 1) If a pulley system with an actual mechanical advantage of 2 is used in lifting a 2,000 lb.

On April 15, 1912, the luxury cruise liner Titanic sank after running into an iceberg. What was the cruise liner's speed when it collided with the iceberg if it had a mass of 4.23 x 108 kg ship and a momentum of 4.9 x 109 kg·m/s?

Different between thrust and upthrust

Replace the wire. now remove one of the wires touching the voltage source. What happened?

What is an example of chemical potential energy in humans?

What does 4_2 helium means

The type of energy transferred by a wave in a medium is energy

With an average acceleration of - 2.4 m/s2, how long will it take a cyclist to bring a bicycle with an initial speed of 13.2 m/s to a complete stop? Answer in units of s.

Which term defines the energy of motion? a. chemical energy b. electrical energy c. gravitational energy d. kinetic energy user: what is electromagnetic energy that travels in transverse waves? a. nuclear energy b. potential energy c.

The mass of a lift is 600kg. the maximum tensile force that the cable supporting the lift can withstand is 7kN. Calculate:maximum upwards acceleration allowed?