A steel rod of 0.5 cm diameter and 10 m length is stretched 12 cm. Young’s modulus for this steel is 21 kN/cm2. How much work, in joules, is required to stretch this rod?

What should the power status of a circuit be when measuring resistance with an ohmmeter?

Aballet student who learns with the of his instructor is demonstrating learning.

Very large accelerations can injure the body, especially if they last for a considerable length of time. one model used to gauge the likelihood of injury is the severity index ( ), defined as =/ . in the expression, is the duration of the accleration, but is not equal to the acceleration. rather, is a dimensionless constant that = the number of multiples of that the acceleration is equal to.in one set of studies of rear-end collisions, a person's velocity increases by 13.7 km/h with an acceleration of 36.0 m/s2 . let the + direction point in the direction the car is traveling. what is the severity index for the collision?