The distance to a particular star, as measured in the earth’s frame of reference, is 7.74 ly (1 light year is the distance light travels in 1 year). A spaceship leaves earth headed for the star, and takes 3.49 yr to arrive, as measured by passengers on the ship. Part A) How long does the trip take, according to observers on earth? Express your answer with the appropriate units. t = yrPart B) What distance for the trip do passengers on the spacecraft measure?

the simple machine has three main features. they are:

fulcrum is the center point or pivot point of the machine. effort is input force/ applied force. load is external force/ output.

the keisha 's machine labels are

x : load

y: fulcrum

z: lever

0.55x745.7j and a calculator

volts times amps 6 x 0.5 3w

  the unit of the measure =

explanation:

  the property that is quantified by the energy needed per of material to raise the temperature by one.

  si unit of energy = joule (j)

  si unit of temperature = kelvin (k)

  si unit of mass of material = kilogram (kg)

the property that is quantified by the energy needed per of material to raise the temperature by one is called specific heat.

the unit of specific heat is