Two pucks, each of mass m, are connected by a massless string of length 2l as illustrated below. the pucks lie on a horizontal, frictionless sheet of ice. the string is initially straight (i. e., θ = 90o ). a constant, horizontal force f is applied to the middle of the string in a direction perpendicular to the line joining the pucks. when the pucks collide, they stick together. how much mechanical energy is lost in the collision?

An architect plans to use solar energy to heat the next house he designs. what principle of absorption and infrared energy can be applied to the design of the new house? how could she apply to those principals?

What’s #16 asking me and how do i solve it?

3. a worker pushes a 30.5 kg polished stone along a polished table with a force on bonin a straight line for 5.20 s after starting from rest. there is no friction between thestone and the table. at the end of the table. the stone is hooked to a cable with a lengthof 62.0 cm to rotate it to a rough table to store until they can be picked up. the roughtable has a coefficient of static friction 0.702 with the polished stone. remember that 8= 9.80 m/s2a) what is the speed of the stone when it is hooked to the cable? b) what is the tension in the cable while the stone is rotating? (there is still nofriction)c) how much force is needed to make the stone begin sliding from rest on therough table? ius = 0.70262.0 cm30.5 kg20.5 kg6= 0