How much Neutrons is in helium

Find the moment of inertia of a hoop (a thin-walled, hollow ring) with mass M and radius R about an axis perpendicular to the hoop's plane at an edge.

Suppose a sound wave and an electromagnetic wave have the same frequency. Which has the longer wavelength? 1. the electromagnetic wave 2. the sound wave

An aircraft with a mass of 2700kg is moving across the runway at 2m/s. How much Force is involved?

During the launch from a board, a diver's angular speed about her center of mass changes from zero to 5.10 rad/s in 170 ms. Her rotational inertia about her center of mass is 11.7 kg·m2.

A car slows down from 27.7 m/s to 10.9 m/s in 2.37s. What is the acceleration?

An apple falls from an apple tree growing on a 20° slope. the apple hits the ground with an impact velocity of 16.5 m/s straight downward. what is the component of the apple's impact velocity parallel to the surface of the slope?

Objects falling through the air experience a type of friction called air resistance. true or false

How big is a wifi pulse signal coming from your router? A) 10 meters B) 15 meters C) 5-10 meters D) 20-30 meters

Imagine you are in a music concert. What different sounds might you hear? How are these sounds made?

Dose aloe Vera grow in the mesa?