Which object has the greater density? A piece of wood with a mass of 15 grams and a volume of 10 cubic cm or a rock with a mass of 20 grams and a volume of 15 cubic cm

In the bohr model of the hydrogen atom, the speed of the electron is approximately 2.48 * 106 m/s. find the central force acting on the electron as it revolves in a circular orbit of radius 4.8 * 10-11 m. answer in units of n.

Why study earth science? A. To predict planetary changes B. To cure certain diseases C. To understand how plants reproduce D. To reduce pollution from cars

Ms. Prainito uses a digital scale to measure mass. What are the units of her measurement? joules grams meters volts

Which of the changes occurs when energy is absorbed?

What factors affect wind erosion and deposition? Give me at least 2 sentences

4. An electric toaster is rated at 500 watts. Determine the amount of electrical energy it converts to heat energy in one minute. 80.3 J B) 500 J C) 3,000 J D) 30,000 J

A (n) ? is the connection between the grounded circuit conductor and the supply-side bonding jumper or the equipment grounding conductor, or both, at a separately derived system.

Radioactivity is a tendency for an element or a material to

14. Three identical light bulbs are connected in series, then are disconnected and arranged in parallel. For each of the scenarios below indicate what changes (if any) take place (1 pt. ea.): a. Total resistance of the circuit b.

An electron moves with a speed of 5.0 * 104 m/s perpendicular to a uniform magnetic field of magnitude 0.20 T. What is the magnitude of the magnetic force on the electron? (e = 1.60 * 10-19 C)