1 The dependent variable would be the amount of liquid absorbed by a paper towel. 2  In an experiment to determine how far people can see into the infrared part of the spectrum, the wavelength of light is the independent variable and whether the light is observed (the response) is the dependent variable.
2. Cook the ribs slowly for 1-1/2 to 2 hours, over medium heat (325Â° to 350Â°) and over a drip pan half filled with water. Long, slow cooking makes for moist and tender ribs with a crisp crust. If in the first 30 minutes the ribs are browning too quickly, shut the grill vents. 3. Determining when pork ribs are done is a little tricky, but after 1-1/2 to 2 hours, you can be virtually certain that the ribs are fully cooked.
Place ribs on grill and cook for 1 1/2 to 2 hours. About 10 minutes before you remove the ribs from the grill, mop them with sauce. When you take them off the grill, mop again with sauce and sprinkle some more Magic Dust on them.t the restaurant we dust the ribs up to a day in advance. Place ribs on grill and cook for 1 1/2 to 2 hours. About 10 minutes before you remove the ribs from the grill, mop them with sauce. When you take them off the grill, mop again with sauce and sprinkle some more Magic Dust on them. Serve immediately.