Do all simple machines have a fulcrum

Which statement best explains how the mass of an atom is organized? Most of the mass is contained in the nucleus. The mass is spread evenly throughout the whole atom. The mass is spread evenly throughout the electron cloud.

If the earth were to cease rotating about its axis, then what is the increase in the value of gravity?

In order for exercise to be effective, it must substantially increase heart rate. True False

Information is relayed to the spinal cord or the brain by

Describe what may happen when ripples on a pond encounter a large Rock in the water

What two pieces of data indicates that uranus resides in the outer layer of the solar system.

What is acceleration? a. change in velocity/change in time b. change in distance/change in time c. change in mass/change in volume d. change in pressure/change in time

Brittany stands at rest on a skateboard. the combined mass of brittany and the skateboard is 62 kg. dave tosses a 3.7-kg pumpkin to brittany, and when she catches it, she and the skateboard begin to roll backward with a speed of 0.16 m/s.

The maximum restoring force that can be applied to the disk without breaking it is 40000 n. what is the maximum oscillation amplitude that won't rupture the disk

Which is a vector quantity speed or velocity