An l 1-m-long vertical copper tube ofinner diameter di 18 mm and wall thickness 1 2 mm contains liquid water at t 0°c. on a winter day air at v = 2.5 m/s, t, : -20°c is in cross flow over the tube. determine the heat loss per unit mass from the water when the tube is full of water, in w/kg. evaluate the properties of copper at 300 k. w/kg the tolerance is +/-2%

Which of the following correctly describes the early view of catastrophism?

Atotal charge of –6.50 µc is uniformly distributed within a sphere that has a radius of 0.150 m. what is the magnitude and direction of the electric field at 0.300 m from the surface of the sphere? a) 2.89 × 105 n/c, radially inward b) 6.49 × 105 n/c, radially outward c) 4.69 × 105 n/c, radially inward d) 9.38 × 105 n/c, radially outward e) 1.30 × 106 n/c, radially inward

The image shows the positions of a car on a roller coaster track. arrange the cars in order based on their gravitational potential energy. begin with the lowest potential energy and end with the highest.