A sample of radium-226 will decay to 1/4 of its original amount after 3200 years. What is the half-life of radium-226?

Found Answer: 1600

2. An astronaut weighs 104 newtons on the moon, where the strength of gravity is 1.6 newtons per kilogram. What is her mass?

Which feature of an object affects its weight? Select three options. mass of the object shape of the object location of the object how much energy the object has or how much force Earth exerts on the object

A shot-putter throws an 8.00 kg shot at a speed of 10.0 m/s. What is the kinetic energy of the shot?

Two small space probes have been slowed to 10m/s as they approach the moon from the same direction. Probe 1 has a mass of 86kg and probe 2 has a mass of 100kg what is their total momentum

When energy decreases, particle motion: A. stops B. increases C. decreases

What does a map scale 1:25,000 mean

Two hikers are 14 miles apart and walking toward each other. They meet in 2 hours. Find the rate of each hiker if one hiker walks 2.8 mph faster than the other.

Which major cities in the u. s. are located in earthquake zones?

Digitized information can be used by computers true or false

Standing on a frictionless surface (like a sheet of ice), two boys, one strong and one weak, are attempting to break a string in half by pulling on its opposite ends.