What is a pulsar?

a. the remains of a low-mass star after it explodes

b. a spinning neutron star emitted radio waves

c. another name for a protostar

d. the stage before a dying star becomes a supernova

an electron gun emits electrons one at a time at a rate of 1000 electrons/minute. Calulate the current produced by this electron.

14. Callum writes down his jog times for each day. Mon - 15min Tue - 10min Wed - 12min Thu - 5min Fri - No jog. He jogs at a constant speed of 9km/h. Work out the distance he jogs each day. On which day did he jog the furthest? show work

Your older brother tells you his. paper. airpñane. has inertia what does this mean

Why do physicists say mass is more fundamental than weight?

What are three properties of air

True or False? a globular cluster is a group of older stars that are clustered together.

The doppler effect is the change in observed frequency due to

Which of the following is NOT a vector quantity? (A) Acceleration (B) Average velocity (C) Linear momentum (D) Potential energy (E) Force

Which of Newton's laws of motion is demonstrated by a hammer pounding a nail into a board

Heated air molecules in a hot air balloon soon carried thermal energy to the top of the balloon. this is an example of ... conduction. Convection. Radiation. Cooling.