Use the table below to identify four substances that undergo a physical change if the temperature is reduced from 50oc to - 50oc. what is the physical change that takes place in each case.

How is energy transferred between trophic levels in a food chain?

A truck traveling with an initial velocity of 44.1 m/s comes to a stop in 15.91 secs. What is the acceleration of the truck?

As object has a charge of 4.5 c. did it gain or lose electrons

What is the speed of a proton that has been accelerated from rest through a potential difference of - 1300 v?

A book is sitting on a table at rest. Which of the following best describes the forces acting on the book

Stephen buys a new mop he travels 3 km south and the. 4 km east and then 3km north how far does he need to go to get back. To where he started

The elements with the largest atomic radii are found in the

Students will explain, distinguish the difference between the 4 states of matter

Name one way that a mixture can be separated

The Huka Falls on the Waikato River is one of New Zealand's most visited natural tourist attractions. On average, the river has a flow rate of about 300,000 L/s. At the gorge, the river narrows to 20-m wide and averages 20-m deep.