A vector isr⇀ = 78.0 m iˆ+278 m jˆ. What is the direction of this vector?

A curium-242 (Z = 96) can be produced by positive-ion bombardment when an alpha particle collides with which of the following nuclei? Note: A neutron is also a product of this bombardment, in addition to the curium-242. A. Pu - 239 B. U - 239 C.

The part of a sound wave in which the particles are most spread out is called a (n)

What charge does aluminum have?

Particle accelerators make it easy for scientists to study what? a) Gravity b) electricity c) quarks

Written Lab report on motion

Which is not a property of an electromagnetic wave? O It is made of magnetic fields It travels at the speed of light O It is made of electrical fields It carries energy only through matter

Explain why your weight would be less in the moon than on earth even though your mass would not change. Use the law of universal gravitation in your explanation.

ions are atoms or groups of atoms that have a positive or negative charge. which of the following statements is true of ions?

1. According to the nebular theory, the solar system formed from? A. accretion of protoplanets. B. a large, thin cloud of dust and gas. C. colliding planetesimals. D. all of the above 2.

What is the difference between tangential acceleration and centripetal acceleration?