A stationary neutron star is also called a pulsar?

True

False

Which of the following correctly shows the chain of energy transfers that create surface currents on the ocean? A. geothermal energy ö wind energy ö surface currents B. tidal energy ö wind energy ö surface currents C.

Why is the shape of the magnetosphere not spherical like the shape of Earth?

A 32kg kid on a sled sliding over some rough snow is acted on by a frictional force which reduces its velocity form 8.5 m/s to 4.1 m/s in 3.0 seconds what is the magnitude of the frictional force?

Can you make the work output of a machine greater than the work input?

As the mass oscillates on a spring, when is displacement at its maximum and velocity equal to zero? A. when it is partially compressed B. when it is at the equilibrium position C. when it is fully stretched D. when it is at near rest

A freight train is accelerating on a level track. The tension in the coupling between the engine and the first freight car would change if some of the cargo in the last car were transfered to other cars?

Mass is a ___ quantity, having just magnitude

I hand you two spheres. They have the same mass, the same radius, and the same exterior surface. I claim one is a solid sphere and the other is hollow. Can you determine which is which without cutting them open?

A bullet is fired horizontally at a speed of 50 m/s. What is its initial vertical velocity? A 0 m/s B25 m/s C 43.3 m/s D 50 m/s

Which of the following describes the formation of air convection currents?