what is the daughter isatope of uranium-234 and what type of decay did it go through to get to that daughter isatope

The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force

Free runners jump long distances and land on the ground or a wall. how do they apply newton’s second law to lessen the force of impact?

Asatellite component is in the shape of a cube with 10cm edges, has an evenly distributed mass of 2 kg and one bolt hole at each of four corners. if the maximum predicted random vibration environment is 10 grms, what bolt size would be a good choice for restraint? what other factors might drive bolt size besides force/stress?