A light-year is:

the distance traveled by light in one year

the distance from earth to the sun

equal to 93,000,000 miles

the time required for light to travel in one year

He steel used to make structural beams in buildings is a mixture. What category best describes this type of mixture?

Three equal masses lie at the corners of an equilateral triangle of side l. find the center of mass.

What's the difference between anxiety and depression

A Imagine you derive the following expression by analyzing the physics of a particular system: v2 + 2az. The problem requires solving for z, and the known values for the system are a 2.55 meter/second, to = 21.8 meter/second, and u = 0 meter/second.

Which of the following charged particles will experience no magnetic force while in a magnetic field. A particle moving at a 90 degree angle to the magnetic field. A particle moving at a 45 degree angle to the magnetic field.

What type of resource can be regenerated or replenished by biochemicl cycles

How much work is done lifting a 12-m chain that is initially coiled on the ground and has a density 2 kg/m so that its top end is 11 m above the ground? (Assume that acceleration due to gravity is g = 9.8 m/s2.)

Which is a correct step in a scientific experiment involving acids and bases?

Objects can be accelerating and traveling at constant velocity at the same time. True or False

What kind of star gives rise to a type i supernova? a. white dwarf stars b. massive main sequence stars c. red giant stars?