The curie family worked with radiation and their research led to the development of several medical techniques for diagnosing problems and curing disease. which of the following is a technique of nuclear medicine? select one: a. x-ray imaging b. radiation therapy, especially for cancer c. electrocardiograms d. chemotherapy

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?

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 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

The brightest star in the night sky in the northern hemisphere is sirius. its distance from earth is estimated to be 8.7 light years. a light year is the distance light travels in one year. light travels at a speed of 3.00 × 108 m/s. calculate the distance from earth to sirius in miles. (1 mi = 5280 ft) g