The cognitive component of an attitude usually describes the subject’s the attitudinal object. a. knowledge or beliefs about b. emotions toward c. actual behaviors toward d. intentions for

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j ?

Which accurately compares concave and convex lenses?

Aball with a mass of 275 g is dropped from rest, hits the floor and rebounds upward. if the ball hits the floor with a speed of 2.40 m/s and rebounds with a speed of 1.70 m/s, determine the following. (a) magnitude of the change in the ball's momentum (let up be in the positive direction.)