A force parallel to the x-axis acts on a particle moving along the x-axis. This force produces potential energy U(x) given by U(x)=αx4,where α = 0.750 J/m4J/m4.

# What is the magnitude of the force when the particle is at x = -0.800 m?

Express your answer with the appropriate units.

Which of the following elements is in the same period as phosphorus? a. carbon c. nitrogen b. magnesium d. oxygen select the best answer from the choices provided a b c d

When an object is heated it contracts. a. true b. false

Researchers determine that the biodiversity in a woodland region is declining. they identify two major threats to the region's biodiversity, a method to address each threat, and the expected outcome of each method. this information is shown in the table. a) reforestation would not benefit many species because most forest species live on the ground. b) reforestation would take the longest time to be effective because trees take several years to grow. c) biological augmentation would benefit only a few species because is is typically not very effective. d) biological augmentation would take less time to ve effective because it targets the majority of prey species.