Ciara's bike has rusted, which means that the iron in the

metal changed to rust.

What has occurred?

an energy formati

an exothermic rea

a chemical reactio

a precipitate forma

In order to hike around a portion of Lake Allatoona, a tour guide determines that he must take his group 150 m east, 60 m north, then 75 m west.

What physics concept underlies these three observations? When passing an oncoming truck on the highway, your car tends to sway toward the truck. The canvas roof of a convertible automobile bulges upward when the car is traveling at high speeds.

A black hole is a - an empty region of space with a huge gravitational field b - a small region that contains the mass of may galaxies c - simply the remains of a giant star that has undergone gravitational collapse

A spring has a spring constant of 30000 N/m. How far must it be stretched (in meters) for its potential energy to be 47 J?

A net force of 150 N left is applied to an object that accelerates at a rate of 300 m/s2 to the left. What is the mass of the object? A) 0.5 kg B) 2 kg C) 450 kg D) 45,000 kg

You want to launch a stone using the elastic band of a slingshot. The force that the elastic band applies to an object is given by F = - α∆s4, where α = 45 N m4 and ∆s is the displacement of the elastic band from its equilibrium position.

Which of the following statements regarding emails is true

If your fitness evaluation score is not satisfactory, set a new goal for the assessment and train for that goal. true or false

A positively charged body exerts an electric field that causes a positively charged particle to move away from it. If work is done to push this particle towards the body, what form of energy will the particle have? a. mechanical energy b.

A CFL bulb has an efficiency of 8.9% and a power of 22 W. How much light energy does the lightbulb produce in 1 second