Algol consists of a 3.7 msun main-sequence star and a 0.8 msun subgiant. why does this seem surprising, at least at first?

What is the definition of "gravitational potential energy"?

While discussing electronic gasoline injection systems, Technician A states that most multiport EFI systems use two injectors for each engine cylinder. Technician B says such a system uses only one injector per engine cylinder. Who is right?

23. The force required to accelerate a 2.0-kilogram mass at 4.0 meters per second is A) 6.0 N C) 8.0 N B) 2.0 N D) 16 N

The position of a 2.75*105n training helicopter under test is given by r⃗ = (0.020m/s3) t3i^ + (2.2m/s) tj^ - (0.060m/s2) t2k^. part a find the net force on the helicopter at t=5.0s.

A rock held by a person above the floor, but not dropped, is an example of which of newton's laws?

To remove 700 j of heat from a refrigerator, the compressor in the refrigerator does 500 j of work. How much heat is released into the surrounding room

The elements least likely to form bonds are found in group__ a) 15 b) 16 c) 17 d) 18

F a metal ball suspended by a rod is at rest, which force is responsible for balancing the force due to gravity?

If the mass of a material is 48 grams and the volume of the material is 8 cm^3, what would the density of the material be?

Your family is moving to a new house. While lifting the box 1.5 m straight up you exerted a force of 200 N for 1 second. How much work is required?