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

G the density of an object equals its mass divided by its volume. the mass of earth is 6 * 1024 kg and its radius is 4 * 103 miles. the mass of the sun is 2 * 1033 g and its radius is 7 * 105 km.

Which has more momentum: a 30 kg bicycle moving at 10 m/s or a 300 kg car at rest? A bicycle B car c they have the same momentum

A mouse runs along a baseboard in your house. The mouse's position as a function of time is given by x (t) = pt 2+qt, with p = 0.36 m/s2and q = - 1.10 m/s. Determine the mouse's average speed between t = 1.0 s and t = 4.0 s.

A ball with a horizontal speed of 1.25 m/s rolls off a bench 1.00 m above the floor. part a how long will it take the ball to hit the floor?

A wrestler weighs in for the first match on the moon. will the athlete weigh more or less on the moon than he does on Earth?

You dribble a basketball while walking on a basketball court list the pairs of action reaction forces in this situation

Which method is used to counteract the effects of erosion caused by water

Which law explains a soccer player who kicks a ball with his foot and his toes are left stinging?

While a roofer is working on a roof that slants at 39.0 degrees above the horizontal, he accidentally nudges his 88.0 N toolbox, causing it to start sliding downward, starting from rest. If it starts 4.

Suppose that the centripetal force acting on an object in circular motion were doubled to a new value, and the object remained in a circular path with the same radius. How would the motion be affected?