How do yeast and plants differ in making energy? 1. Both plants and yeast need sugar but go through different process to make energy.

2. Only plants need to make energy, yeast naturally makes it in its body.

3. Plants absorb sugar in its environment and yeast goes through the process of photosynthesis.

4. Plants go through photosynthesis to make sugar and yeast absorbs sugar in its environment.

Awave has a wavelength of 7 mm and a frequency of 19 hertz. what is its speed?

Aflask with vinegar in it has a mass of 160 grams. a balloon with baking soda in it has a mass of 40 grams. the balloon is attached to the flask to seal the opening and the vinegar and baking soda mixes. the balloon inflates to a large volume. what will the total mass of the balloon and flask be after the balloon inflates? explain. a) less than 200 grams because the solid baking soda disappears. b) 200 grams, because all the atoms remain in the balloon or flask. c) more than 200 grams because the size of the balloon is so much larger. d) less than 200 grams because gases such as the one in the balloon are lighter than solids and liquids.

Engines for propeller-driven aircraft are limited in their maximum rotational speed by the fact that the tip speed of the propeller must not approach the speed of sound in air (mach i). taking 6 ft as a typical diameter for a propeller of a light airplane and 1100 fils as the speed of sound, find the upper limit on the rpm (revolutions per minute) of the propeller shaft.