1) a star burst can be defined as stars formed from recycled dead star materials.
true or false

2) when the milky way was in its earliest ages, hydrogen, helium and other common elements were the only ones around.
true or false

3) to estimate the milky way’s age, astronomers measure the elements found in the oldest stars in the milky way’s dense groupings of stars that make the halo shape, which are referred to as what?
1-pulsar planets
2-star bursts
3-brown dwarfs
4-global clusters

When the Milky Way was in its earliest ages, hydrogen, helium and other common elements were the only ones around.

True  

Explanation:

answer: the direction of the wind is expressed as the direction from which the wind is blowing. for example, easterly winds blow from east to west, while westerly winds blow from west to east.

explanation:

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation: