It is 15C outside and 22C inside. A. 75 m x .5m window is left open, and the wind is blowing in the window at a speed of1.2m/s. What is the thermal power transfer out of the room.

Which expression is equivalent to (3^2)^-2 a.-81 b.-12 c.1/81 d.1/12

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.

What is the ratio for the surface areas of the cones shown below, given that they are similar and that the ratio of their radii and altitudes is 2: 1? submit