What causes some materials to have magnetic field

James added a new video card and needs to get a power supply that will have enough power to run the new card.

Define criteria & constraints

If 160 J of work was done to move a car and the distance the car moved was 40 m. what amount of force was used?

2. The nucleus holds two particles: a. proton and electron b. proton and neutron c. neutron and electron

Based on the periodic table above, which of the following elements is a metal?

How would you find the speed of a ball thrown in to the air - it takes 6 seconds to get tho the top. The height is not given.

If your vision somehow began to increase so that you could see higher and higher frequencies beyond visible light, what type of wave would you be able to perceive first?

Show that the units N/kg can be written using only units of meters (m) and second (s). Is this a unit of mass, acceleration or force.

How do the sun energy flow through the earth system

Which are precautions to take when working with heat and fire?