The size of the universe by diameter is: a) 13.8 x 10^9 ly
b) 10 x 10 ^9 ly
c) 32.6 x 10^9 ly
d) 46.5 x 10^9 ly
e) 93 x 10^9 ly

Janelle made a hypothesis bout the uneven temperatures inside her house during winter. she believes that 50% of the ducts are blocked and she plans to investigate. if she wants to prove her hypothesis using scientific processes what should she do next?

What will a positive and a negative charge do if they are separated from each other?

Asolid round steel rod 6.25 mm in diameter and 375 mm long is rigidly bonded to the end of solid square brass rod 25 mm on a side and 300 mm long. the geometric axes of the bare are along the same line. an axial tensile force of 5.4 kn is applied at the extreme ends of the assembly. for steel e = 200 gpa and for brass e = 90 gpa. determine the total elongation for the assembly.