A spring is 14cm long. Three masses are hung from it and then it is measured again. Now it is 19.5cm long. What force did the three masses provide? The spring constant for the spring is 30N/m.

How to describe the motion of an object that has an acceleration of 0 m/s

If b humans cannot see ultraviolet waves how can ultraviolet light be used to gather evidence of a crime?

A uniform rod is 2.0 m long. The rod is pivoted about a horizontal, frictionless pin through one end. The moment of inertia of the rod about this axis is given by (1/3) ML2. The rod is released from rest at an angle of 30° above the horizontal.

Which factors effect floridas climate

which type of graph shows data seperated into intervals? A. stemplot B. Line Graph C. Scatterplot D. Histogram

A horse trots away from its trainer in a straight line. moving 38 m away in 9.0 s. It then turns abruptly and gallops halfway back in 1.8 s. Calculate its average speed and average velocity?

Why aren't all atoms radioactive?

Why would the discovery of a fossil imply that earth is much older than originally though?

What two properties show that the drink is a fluid

A car travels in a straight line for 3.7 h at a constant speed of 71 km/h. what is its acceleration? answer in units of m/s 2.