Convective heat transfer can only occur if fluids mediate the energy transfer

Indicate whether the statement is true or false


TRUE

Physics & Space Science

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A uniform rod (length = 2.4 m) of negligible mass has a 1.0-kg point mass attached to one end and a 2.0-kg point mass attached to the other end. The rod is mounted to rotate freely about a horizontal axis that is perpendicular to the rod and that passes through a point 1.0 m from the 2.0-kg mass. The rod is released from rest when it is horizontal. What is the angular velocity of the rod at the instant the 2.0-kg mass passes through its low point?

A. 1.7 rad/s B. 2.2 rad/s C. 2.0 rad/s D. 1.5 rad/s E. 3.1 rad/s

Physics & Space Science

A hornet circles around a pop can at constant speed once per second in a path with a 12-cm diameter. We can conclude that the hornet's wings must push on the air with force components that are

a. straight down. b. down and inwards. c. down and outwards. d. down and backwards. e. down, inwards and backwards.

Physics & Space Science

The image of a convex mirror is always virtual, ______________, and smaller

Fill in the blank(s) with correct word

Physics & Space Science

Stars of lower mass have deeper convection zones outside their cores than stars of higher mass

Indicate whether the statement is true or false

Physics & Space Science