Yosef applies an input force of 50 n to a crowbar. the crowbar applies a force of 750 n to the lid of a crate. what is the mechanical advantage of the crowbar? the mechanical advantage of the crowbar is .

Ineed extreme for task 2. my student number is 571721. many to whoever solves this correctly, im in debt to you.

Determine the change in width a, height b, thickness t when a plate is subjected to the uniform distributed load and is made of material having modulus of elasticity e=230 gpa and poisson's ratio ν=1/3. given : a=400 mm and b= 300 mm also the uniformly distributed load in downward y direction of plate is 2 mn/m and in the positive x direction is 3 mn/m and t=20 mm

30 points - when can a theory be modified if a new type of technology allows for new observations that raise new questions? a. immediately, while the questions about the theory are being asked b. after new hypotheses related to the theory are tested in experiments c. only after the new observations disprove all parts of the theory d. while scientists begin to think about how the theory could improve