4) A certain Cluster Of Stars has the following
Characteristics:
•It is made up of a few thousand young blue
Stars.
• These Stars are well spread out.
• The Cluster seems to have no definite order or shape
What Could this Cluster be?
A) An open Cluster
B) A spiral Galaxy
C) A globallar Cluster
D) An elliptical galaxy

Ahot wire operates at a temperature of 200°c while the air temperature is 20°c. the hot wire element is a tungsten wire of 5 um diameter and 2 mm in length. plot using excel current, heat transfer and heat generated by the wire for air velocity varying from 1-10 m/s in steps of lm/s? matlab the sensor voltage output, resistance, or assume nu 0.989 re033pr13 take air properties at tr (200°c20°c)/2 = 110°c properties of tungsten: c 0.13 kj/kg.k 3 p 19250 kg/m k (thermal conductivity) = 174 w/m.k