Steel is an alloy of ___ One of the main reasons steel is used more widely than iron is because it's___ than iron.

To run the simulation, you will alter mass in creating momentum of the carts. The total mass of the carts in the collision is the variable.

Four blocks of weights are required using which any body whose weight is between 1kg and 40 kg can be weighed. Find the four weights

Explain why the invention of the microscope led to the discovery of cells.

Which of the following layers of the Earth is unique among the terrestrial planets? A) hydrosphereB) ionosphereC) mantleD) crustE) core

An airplane flies with a constant speed of 840km/h. how far can it travel in 1 hour?

Recall that in the equilibrium position, the upward force of the spring balances the force of gravity on the weight.

At one instant, the center of mass of a system of two particles is located on the x-axis at 2.0 cm and has a velocity of (5.0 m/s) ˆx. One of the particles is at the origin. The other particle has a mass of 0.

A 91 kg block is released at a 6 m height as shown. The track is frictionless. The block travels down the track, hits a spring of force constant k = 1968 N/m. The acceleration of gravity is 9.

Why do charges build up on clothing in an electric dryer?

Two plates with area A are held a distance d apart and have a net charge + Q, and - Q, respectively. Assume that all the charge is uniformly distributed on the inner surfaces of the plates.