Aworker stands on a support and with the of a block will lift the load evenly, the weight of which is 480 h (fig. 216). calculate the pressure produced by the support worker, if his weight is 720 n, and the foot area is 320 cm² (friction and block weight can be neglected.)

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.