A good model of the solar system to present to elementary is the Ptolemaic model.

A) true

B) false

How dose energy I've through an ecosystem

A machine uses a force of 200N to do 20,000J of work in 20s. Find the distance the object moved and the power of the machine.

The liquid mercury in a thermometer expands as it is heated. this is a ... change of state. change of form. chemical change. physical change.

What are two extrusive rocks

Which factor most closely defines the bodyÍs ability to change direction? A. agility B. acceleration C. flexibility D. reaction time

Consider a single photon with a wavelength of λ, a frequency of ν, and an energy of e. What is the wavelength,? Consider a single photon with a wavelength of λ, a frequency of ν, and an energy of e.

You give a shopping cart a job down the aisle the cart is full of groceries and has a mass of 18 kilograms the cart accelerates at a rate of 3 m/s how much force did you exert on the cart

A solid spherical insulator has radius r = 2.5 cm, and carries a total positive charge q = 8 * 10-10 c distributed uniformly throughout its volume. find the magnitude of the electric field |e| at a radius of 5 cm from the origin (i. e.

What are some things cyclists do to reduce friction?

What is used to find true north on a compass? a. equator c. magnetic declination b. prime meridian d. cardinal directions