(c) nail tips exert tremendous pressures when they are hit by hammers because they exert a large force over a small area. what force must be exerted on a nail with a circular tip of 1.00 mm diameter to create a pressure of 3.00 × 10 9 n/m 2 ? first calculate the area of the circular tip, express it in 10 -6 m2. for example, if the area is 0.68 = 6.8 × 10-6 m2, enter just 6.8.

Let f(x) = x4- 8x2 . find the relativeextrema of this function using the second derivative test.

Energy is the ability to do work which measures what

While goofing off at the ice skating rink, a student takes off her shoes and places each of them on the ice. her friend, a hockey player, then shoots a hockey puck at each shoe. the first puck immediately comes to rest after it collides with the left shoe. the second puck rebounds after it collides with the right shoe. if each hockey puck has the same incoming speed, which shoe has greater speed after the collision? the right shoe. both shoes have the same speed. the left shoe.