Practice Question 4 4.1 Vanda is a type of orchid that grows on trees. It has green leaves and grows in places where there is a lot of rainfall. Although fixed on the branch of the tree, its roots hang outwards into the air, absorb atmospheric water into the plant, and pass it into the host plant. Is the Vanda a parasite? How will the host tree be affected? Fig. 14: Vanda​

The image shows the positions of a car on a roller coaster track. arrange the cars in order based on their gravitational potential energy. begin with the lowest potential energy and end with the highest.

Which is not an example of how an object gains elastic potential energy by stretching? a. jumping on a pogo stick b. pulling on a rubber band c. jumping on a trampoline

Four objects each with charge +2.0×10−7c are located at the corners of a square whose sides are 2.0 m long. part a what quantities can be determined using this information? check all that apply. the electric force on a charged object placed at the center of the square. the mass of each object. the total electric potential energy of the system consisting of the four charged objects. part b find the electric force on a charged object placed at the center of the square.