How to indicate kinetic energy

An old truck compresses a spring scale at the junkyard by 25 cm. The spring constant for the industrial scale at the junkyard is 39,200 N/m. N=?

Alisa, a skateboarder, is riding down a hill. If Alisa and the skateboard are considered a single object, what forces are acting on her? check all that apply push gravity normal force friction tension

Why does it take the water in a swimming pool some time to heat up during a hot day?

Juanita made an electromagnet by placing an iron bar inside a coil of wire and then running current through the wire. After awhile, she turned off the current. What happened to the bar? A The bar continued to be magnetic forever.

If blue light hits a red filter, what kind of light comes through the filter? a. red b. blue c. purple d. no light

What is a ion in science?

I'm a bit confused A basketball is thrown upwards. The height f (t), in feet, of the basketball at time t, in seconds, is given by the following function: f (t) =

A rod made up of a single element is used to heat water using electricity. To which group does this element probably belong to?

16. A block is sitting on a ramp tilted from horizontal. The block is just about to slide. T he angle of the ramp relative to horizontal is 14 degrees. What is the coefficient of friction between the block and the ramp? a. 0.25 b. 0.97 c. 0.5 d. 0.

Assume that a friend hands you a heavy book to hold as he turns the combination lock on his locker. Which of you does more work?