Arelaxed biceps muscle requires a force of 25.0 n for an elongation of 3.0 cm; the same muscle under maximum tension requires a force of 500 n for the same elongation. the muscle is assumed to be a uniform cylinder with length 0.200 m and cross-sectional area 50.0cm2.

Bone-strengthening physical activity done increases bone-mineral content and bone density in youth.

Amira pulls a 3 pound wagon 4 feet. how much work has she done?

Apositive charge moves in the direction of an electric field. which of the following statements are true? check all that apply. check all that apply. 1.the potential energy associated with the charge decreases. 2. the electric field does positive work on the charge. 3. the electric field does negative work on the charge. 4. the potential energy associated with the charge increases. 5. the electric field does not do any work on the charge. 6. the amount of work done on the charge cannot be determined without additional information.