11. Rob was determined to get a random sample of university students for his psychology survey assignment. He succeeded when he:

Select only one.
☐ put an ad in the school paper requesting volunteers and polled the first 100 students who answered the ad.
☐ copied the names of all the students on slips of paper, putting them in a bag, and drawing out 100 slips. Then he called up those students.
☐ polled ten of his friends and then asked each one of them to poll nine of his or her friends.
☐ stopped people on their way into the cafeteria and polled the first 100 who agreed to be surveyed.

Molten iron fills a mould, which has a volume of 200 cm cubed. calculate the volume when the iron cools and solidifies.

Which lists the fundamental forces in order, from strongest to weakest? strong nuclear, weak nuclear, electromagnetic, gravitational strong nuclear, electromagnetic, weak nuclear, gravitational gravitational, weak nuclear, electromagnetic, strong nuclear electromagnetic, gravitational, strong nuclear, weak nuclear

Pl asaaap ! match the term to the correct description. a type of wave that transfers energy where the particles in the medium move perpendicular to the direction in which the energy is traveling. a type of wave that transfers energy where the particles in the medium move parallel to the direction in which the energy is traveling. movement that is back and forth, like an equal sign = a type of wave that transfers energy where the particles in the medium move in a circle motion while the energy travels left or right. movement that is like a t transfers energy from one location to another 1. wave 2. parallel movement 3. perpendicular movement 4. transverse wave 5. longitudinal wave 6. surface wave