Nicolaus Copernicus was considered: a heretic because his theory disagreed with the church a hero because his theory agreed with current beliefs the "Father of Astronomy" because he believed the earth was the center of the solar system

What naturally accurring radioisotope is used as the fuel for a nuclear reactor

A 1.0 kg block slides along a frictionless horizontal surface with a speed of 7.0 m/s. After sliding a distance of 2.0 m, the block makes a smooth transition to a frictionless ramp inclined at an angle of 40° to the horizontal.

An object moving in a straight line changes its velocity uniformly from 2m/s to 4 m/s over a distance of 12 m. What was its acceleration? (A) 0.5 m/s^2 (B) 1 m/s^2 (C) 2 m/s^2 (D) 3 m/s^2

Which refers to the type of chemical bond that involves the transfer of electrons between atoms? metallic polar covalent ionic covalent

Lexy says that the diffraction angle is the one labeled R, and Jin says that the diffraction angle is the one labeled S. Which best explains who is correct? Lexy is correct because angle R is between the incident wave, n = 0, and a diffracted wave.

Temperature is usually measured in degrees with a (n)

Two lab carts are pushed together with a spring mechanism compressed between them. Upon release, the 5.0 kg cart repels one way with a velocity of 0.12 m/s. The 2.0 kg cart goes the other way. At what velocity does it travel?

A bowling ball has a mass of 7.2 kg and a weight of 70.6 N. It moves down the bowling alley at 1 m/s and strikes a pin with a force of 15.0 N. What is the force that the pin exerts on the bowling ball?

an electric clothes dryer has a resictance of 16 Ohms it drawes 15 A of current what is the voltage in volts of the wall outlet that it is pluged into

A lorry with a mass of 5000kg accelerates to overtake a caravan on the motorway. Its acceleration is 1.5m/s². What force must the engine be providing? You can ignore the effects of friction and air resistance