Consider a 1.5-m high, 3-m wide solar collector that is tilted at an angle  from the horizontal. the back side of the absorber is heavily insulated. the absorber plate and the glass cover, which are spaced 2.5 cm from each other, are maintained at temperatures of 80°c and 40°c, respectively. determine the rate of heat loss from the absorber plate by natural convection for 

Which quantities are scalars? choose all that apply a.distance b.speed c. acceleration d.velocity

The passage that directs air to the lungs is called a. diaphragm. b. larynx. c. bronchi. d. pharynx.

At 20∘c, the hole in an aluminum ring is 2.800 cm in diameter. you need to slip this ring over a steel shaft that has a room-temperature diameter of 2.804 cm . 1. to what common temperature should the ring and the shaft be heated so that the ring will just fit onto the shaft? coefficients of linear thermal expansion of steel and aluminum are 12×10−6 k−1 and23×10−6 k−1 respectively.