Atrough is 16 ft long and its ends have the shape of isosceles triangles that are 4 ft across at the top and have a height of 1 ft. if the trough is being filled with water at a rate of 15 ft3/min, how fast is the water level rising when the water is 5 inches deep?

Rank the torques on the five doors shown in the figure above from least to greatest. note that the magnitude of all the forces is the same

Which of the following are guidelines to follow for obtaining accurate observations

Visualize the problem and identify special cases first examine the problem by drawing a picture and visualizing the motion. apply newton's 2nd law, ∑f⃗ =ma⃗ , to each body in your mind. don't worry about which quantities are given. think about the forces on each body: how are these consistent with the direction of the acceleration for that body? can you think of any special cases that you can solve quickly now and use to test your understanding later? one special case in this problem is if m2=0, in which case block 1 would simply fall freely under the acceleration of gravity: a⃗ 1=−gj^.