given a strong chain and a convenient tree, could you pull your car out of a ditch in the following way? fasten the chain to the car and to the tree. pull with a force f at the center of the chain as shown in the figure. from mechanics, we have f = 2t sin, or t = f/(2 sin θ), where t is the tension in the chain, that is, the force exerted on the car tree car 20 ft

Akg a of 55 m at an of 11 ? . if is at 98 km/h,be ?

Asolid round steel rod 6.25 mm in diameter and 375 mm long is rigidly bonded to the end of solid square brass rod 25 mm on a side and 300 mm long. the geometric axes of the bare are along the same line. an axial tensile force of 5.4 kn is applied at the extreme ends of the assembly. for steel e = 200 gpa and for brass e = 90 gpa. determine the total elongation for the assembly.

10 points! will mark brainiest! in a heat engine if 1,000 j of heat enters the system and the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2,000 j 1: write the equation 2: list out your known variables 3: plug the numbers into the equations 4: solve 5: write your solution statement that includes initial energy and final energy added you so much!