Explain why the tip of a sewing needle is sharp

Is a spring that is stretched a kinetic, potential or both?

A car drives straight ahead for 12 km and then turns right and goes 5 km. If the car ends up directly north of its original position, what is its displacement? A. 7 km south B. 13 km north C. 17 km north D. 25 km south

Which property is expressed in g/cm3

A 26 kg child is coasting at 2.0 m/s over flat ground in a 5.0 kg wagon. The child drops a 1.5 kg ball from the side of the wagon. What is the final speed (in m/s) of the child and wagon

Suppose that you find the volume of all the oceans to be 1.4*109km3 in a reference book. To find the mass, you can use the density of water, also found in this reference book, but first you must convert the volume to cubic meters.

Density is calculated by dividing

The one island species evolved into three different species. This is called?

Find the components of vector M shown in figure 5-7

Electrical current is actually made of a. static charges. b. moving electrons. c. high or low voltage. d. resistance within a circuit.

A lizard accelerates from 2 m/s to 10 m/s in 4 seconds. what is the lizard average acceleration