If the distance of the track is 100 cm and it takes the marble 5 seconds to go from beginning to end, what is the speed ?
Explanation:
speed = distance ÷ time
= 100 cm ( 1 meter ) ÷ 5 seconds
= 20 cm/s
= 0.2 m/s
can someone help with this please right answers only and dont do #2
Answer: 1. Use goggles, lab coat, and ask instructor about any questions
Explanation:
Answer the following questions from the movie ‘Flubber.’
Answer:
1) all of the above
2) a peice of his hair
3) 77 degrees
4) none of the above
5)slippery,viscous and bouncy
6) flying rubber
7) true
8) 500
9) helium
Use the notes you recorded about the evidence and the work you did with your group using the Reasoning Tool to help you write a message to Dr. Moraga about the Mesosaurus’ history. You may wish to use some of the vocabulary words listed in the Word Bank below to help you write.
Question: How did the Mesosaurus fossils on the South American Plate and African Plate get so far apart?
Claim 1: The South American Plate and African Plate moved apart suddenly.
Claim 2: The South American Plate and African Plate moved apart gradually.
I need a 9 sentence paragraph for this
Answer:
Explanation:
im sorry this is all i know
Earth's plates travel at a rate too slow to be experienced by humans. It takes a long time for Earth's plates to travel great distances. The Mesosaurus fossils moved apart gradually over tens of millions of years.
In one form of nitrogen fixation, the ............ energy of ............. splits nitrogen molecules into atoms.
A. chemical, water vapor
B. mechanical, consumers
C. electrical, lightning
D. released, bacteria
Answer:
A is the answer hope it helps.
In one form of nitrogen fixation, the electrical energy of lightening splits nitrogen molecules into atoms.
What is nitrogen fixation?Nitrogen fixation is a chemical process by which nitrogen, is converted into ammonia by enzyme called nitrogenase.
Nitrogen fixation is achieved by the help of a nitrogen-fixing bacteria or lightening which splits nitrogen molecules into atoms.
Thus, in one form of nitrogen fixation, the electrical energy of lightening splits nitrogen molecules into atoms.
Learn more about nitrogen fixation here: https://brainly.com/question/20259317
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the length of a piece of metal that has a melting point of 400 °C. At 20 °C, the metal is 2.3 cm long. The scientist heats the metal to 125 °C. Which of the following is the most likely length of the metal at 125 °C plz answer soon. i really need help :(
When you added the neutron to the atom, what is the new name?
Answer:
Isotope
Explanation: Atoms always have an equal number of protons and electrons, and the number of protons and neutrons is usually the same as well. Adding a proton to an atom makes a new element, while adding a neutron makes an isotope, or heavier version, of that atom.
Answer:
an isotope.
Explanation:
Isotopes are two or more types of atoms that have the same atomic number and position in the periodic table and that differ in nucleon numbers.
The plant chemical which absorbs sunlight and helps make food is:
epithelial
chlorophyll
cellulose
xylem
What type of plate boundary is shown below?
Answer:
B. Convergent Boundary
Why is melting ice a physical change?
The process can be undone.
The process moves atoms into permanent places.
The process releases energy.
The process creates a new compound.
Answer:
The process creates a new compound.
Explanation:
EZ
please help please lol
Answer:a and d
Explanation:
Help me out!!
If its right i give you brainliest<3
Also have a great day
Answer: the answer is D
The presence of _____ in the cell wall makes the walls somewhat rigid.
cellulose
cell membrane
chloroplast
chlorophyll
Question 4 (1 point)
Very high wispy clouds formed mostly of ice crystals.
Stratus
Cirrus
Cumulous
Which statement is correct concerning the cell walls?
Cell walls do not allow water to enter or leave the cell.
All plants and animals remain rigid because of cell walls.
Woody plants can remain standing without water because of stiff cell walls.
Answer:
Cell walls do not allow water to enter or leave the cell is the correct answer. Hope it helps.
How does osmosis affect plants?
Osmosis allows more sunlight to enter the plant.
Osmotic pressure helps plants to keep its rigid structure.
Answer:
Osmosis is how plants are able to absorb water from soil. The roots of the plant have a higher solute concentration than the surrounding soil, so water flows into the roots. In plants, guard cells are also affected by osmosis. These are cells on the underside of leaves that open and close to allow gas exchange.
Hope this helps.
Answer: In biology osmosis is the movement of water molecules from a solution with a high concentration of water molecules to a solution with a lower concentration of water molecules, through a cell's partially permeable membrane.
Explanation:
Which of the following is true about light waves? (Select all that apply.)
Light waves need a medium to travel through.
Light waves do not need a medium to travel through.
Light waves are transverse.
Light waves are longitudinal.
Answer: Light waves are transverse, Light waves do not need a medium to travel through
Explanation:
C. Light waves are transverse
B. Light waves do not need a medium to travel through
I hope this helps, if it does please leave a thanks and rate this question, Thank You!