A roller coaster with a potential energy of 235,200 J sits at the top of a 30 m high hill. What is the mass of the roller

coaster? (Formula: PE = mgh)

800 kg

7.840 kg

8,000 kg

78,400 kg

Spastic paralysis suggests involvement of the

Question 18 Which of the following does not increase the rate of dissolving? stirring insulated container temperature surface area

Unlike matter, energy is not cycled through an ecosystem

A nurse is caring for an infant born with a myelomeningocele who is scheduled for surgery. what is the priority preoperative goal for this infant?

In predation, the organism that kills another organisms for food is the prey. T or F

How do cells become specialized for different functions?

Organisms do not adapt as a result of competition for resources. true or false

How do most cancers arise? question 1 choices choice a., from a single mutations arising simultaneously in a cluster of cells choice b., from a series of mutations that arise in the descendants of a single somatic cell choice c.

Briefly describe your experimental design for the first experiment. Make sure to include: a. The conditions you used to feed your mice (e. g., the foods you fed your mouse and the length of time the mouse was in the light box) b.

What caused the earth to develop layers as it cooled?