An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?
Answer (2)
The total charge that flows through the device is calculated to be 450 coulombs by multiplying the current (15 A) by the time (30 seconds). The number of electrons is then calculated to be approximately 2.81 x 10^21 by dividing the total charge by the charge of a single electron (1.6 x 10^-19 C). Thus, approximately 2.81 x 10^21 electrons flow through the device.
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Let's solve each of the jumbled words related to plants and their transport systems:
M-Y-L-E-X : The rearranged letters form the word XYLEM . Xylem is a type of tissue in vascular plants. It conducts water and dissolved nutrients upward from the roots to the rest of the plant and helps to form the woody element in the stem.
M-E-P-H-L-O : This rearranges to PHLOEM . Phloem is responsible for transporting sugars and other metabolic products downward from the leaves, where they are produced, to other parts of the plant.
R-A-T-I-O-N-P-R-A-N-S-T-I-S : This jumbled text spells TRANSPIRATION . Transpiration is the process where plants absorb water through the roots and then give off water vapor through pores in their leaves, known as stomata. This process is crucial for nutrient uptake and temperature regulation in the plant.
R-O-T-O S-U-R-E-S-E-R-P : This unscrambles to ROOT PRESSURE . Root pressure is the osmotic pressure that can build up in the roots of plants, pushing water upward through the xylem.
R-L-Y-I-A-A-C-P-L L-O-A-C-N-I-T : The correct word is CAPILLARY ACTION . This is the ability of a liquid to flow in narrow spaces without the assistance of external forces like gravity. In plants, it helps in the movement of water through the xylem.
V-E-I-S-E E-T-U-B : These letters rearrange to SIEVE TUBE . Sieve tubes are part of the phloem tissue and are responsible for transporting food materials made in the leaves to other parts of the plant.
L-C-S-V-A-U-R-A B-L-E-D-U-N : The correct term here is VASCULAR BUNDLE . Vascular bundles are strands of conducting vessels in the stems or leaves of a plant, typically composed of xylem and phloem.
N-O-O-L-T-R-S-T-A-C-A-I-N : This jumbled phrase rearranges to TRANSLOCATION . Translocation in plants refers to the movement of soluble food material like sugars from one part of the plant to another.
D-R-A-U-G E-L-L-C : The correct term is GUARD CELL . Guard cells are specialized cells that border a stoma on a plant leaf and regulate the opening and closing of the stoma to control gas exchange and water loss.
M-O-A-S-T : This spells STOMA . Stomata (the plural of stoma) are tiny openings or pores in plant tissue that allow for gas exchange, playing a vital role in photosynthesis and transpiration.
