Answer:
Before Lab
At all times while in the lab area you must follow all classroom rules and behave in an appropriate manner or
you will not be allowed to participate in laboratory activities. You should come to class prepared with any
pre-lab assignments or instructions that have been given.
⋅ While working in the lab area safety goggles should be worn at all times.
⋅ All long hair should be tied back; open-toed shoes, baggy clothing, and loose jewelry should also be
avoided.
⋅ Know the location and proper use of all safety equipment (including fire extinguisher, fire blanket, firstaid kit, eye wash station, and sink) as well as classroom exits.
⋅ Food and drink are not allowed in the lab area.
⋅ Never work alone in the laboratory.
⋅ If there is an accident or a problem, immediately stop what you are doing and report it to your instructor.
During Lab
⋅ Before beginning any procedures, read through all lab instructions that your instructor has given.
⋅ If you do not understand the instructions or the procedures, ask for clarification.
⋅ Perform only procedures or experiments that have been assigned by your instructor.
⋅ Clean up all spills, including water, and messes immediately before proceeding.
⋅ Wear an apron whenever using acids, bases, or stains.
⋅ All solutions, chemicals, and specimens should be treated with care.
⋅ Never taste or smell anything in the lab. If instructed to smell something, use your hand to gently waft the vapors to
your nose.
Fire / Electrical Safety
⋅ Know the location and proper use of the fire blanket and fire extinguisher.
⋅ Never directly touch something that may be hot, use a hot mitt or tongs instead.
⋅ When heating, always point test tubes away from yourself or others.
⋅ Never use electrical equipment near water or moisture.
⋅ Extinguish all uncontrolled flames immediately and notify your instructor.
⋅ If a burn is received, immediately place the burned area under cold water and notify instructor.
⋅ Always make sure that all flames and electrical equipment are turned off when not in use.
Glassware / Sharp Object Safety
⋅ Never use glassware that is cracked or chipped (even if it does not leak).
⋅ When using a blade, never use a dull blade and always cut downward and away from your body.
⋅ If a cut is received, immediately wash the cut, apply pressure to stop the bleeding, and notify your
instructor.
⋅ Always dispose of broken glass in a glass disposal box and notify your instructor.
Chemical Safety
⋅ Know the location and proper use of the eye-wash, sinks, and chemical showers.
⋅ Know the location of sand or vermiculite in case of acid spills.
⋅ When diluting, always pour acids into water. Do not pour water into acid.
⋅ If a chemical is spilled on your person, immediately flush the area with water and notify the instructor.
⋅ Dispose of chemicals only as instructed in marked containers.
Biological Safety
⋅ Wear protective gloves when handling biological specimens.
⋅ If you come into direct contact with biological specimens or fluids, immediately notify your instructor.
⋅ Dispose of all biological cultures or materials containing live cultures in the proper biohazard bags.
After Lab
Before leaving the lab area, return all equipment to its proper place and make sure that your lab area is
cleaned up. After completing the lab wash your hands thoroughly with soap and water.
(Hope this helped)
Students working together to understand information is best described as
1. independent study.
2. home schooling.
2. collaborative learning.
4. secondary education.
Solve the problems here on the pic
Answer:30,3.33,300
Explanation:divide 15 by the decimal
An axe used to split wood is driven into a piece of wood for an input distance of 0.03. If the mechanical advantage of the axe is 0.85, how far apart ( output distance ) is the wood split? ( Round to two decimal places. ) ( Ex: 1.28)
Answer:
.9 im guessing
Explanation:
NASA plans to launch a new satellite to orbit the Earth. As the satellite is launched the thrust of the hot exhaust gas is pushed through the rocket nozzle and is accelerated toward the rear of the rocket. In turn, the rocket engine is then lifted off of the ground. According to Newton's 3rd law of motion, which statement below is true of the forces involved?
A The downward force exerted by the exhaust on the engine is greater.
B The magnitude of both forces is equal to zero acting in opposite directions.
C Both forces are equal in magnitude, but opposite in direction.
D The upward force exerted by the engine on the exhaust is greater.
Answer:
A
Explanation:
Which crash caused a greater change in motion for the satellite explains why and how? Write at least 1 paragraph and use vocab.
Answer:
Explanation:
Crash one
im very sorry if it is wrong. I am DUMB!!
Good luck, stay safe, have a great rest of your day, God bless, and happy holidays! :)
Roxanne is an expert at blowing bubbles with bubble gum. She discovered that her bubbles were bigger if she stood facing the Sun when she blew them. At lunch she told her three best friends about her discovery and after school they all tried it. No one else was able to blow bigger bubbles when they faced toward the Sun. Which of the following would be best for Roxanne to do next? A. She should prove she is right by blowing bubbles while her friends are watching.
B. She should give them each bigger pieces of bubble gum and try it one more time.
C. She should think about what else she is doing that might have made the bubbles bigger.
D. She should ask her friends to try it again and concentrate harder when they face the Sun.
Answer:
My guess is C
Explanation:
20 points!!!! please answer fast
Answer:
C you got it right bro
Explanation:
please help Scientists have explored only a small portion of space. What evidence is there that gravity exists outside of what they have explored?
How much force must be applied to a 2,500 kg mass to accelerate it to 3.5 m/s2 ?
A: 204 N Strike Reset
B: 714 N Strike Reset
C: 8,750 N Strike Reset
D: 30,625 N Strike Reset
Options: Power, energy, time
_____ is the rate of _____ it takes to use a certain amount of _____
Answer:
power is the rate of time it takes to use a certain amount of energy
Explanation:
i think,, dont take my word for it tho.
sorry if its wrong :'(
If an object has kinetic energy, what must it be doing?
Answer:
It has to be moving in order for it to be kinetic energy and potential energy is when is not moving.
Answer:
The Object Must Be Moving!
Explanation:
Kinetic energy is the energy an object has because of its motion. If we want to accelerate an object, then we must apply a force. Applying a force requires us to do work. After work has been done, energy has been transferred to the object, and the object will be moving with a new constant speed.
What landform is created when an oceanic plate and a continental plate converge?
Ocean trenches is created when an oceanic plate and a continental plate converge.
What is Ocean trenches?Where a continental and oceanic plate converge or where two oceanic plates converge are the two types of convergent plate borders where ocean trenches emerge. At an oceanic/oceanic border, whichever plate is denser—the older, colder plate—subducts beneath the other because oceanic plates are denser than continental plates.
The subduction creates an underwater trench in both situations. The deepest parts of the ocean are located within these trenches, which are long, narrow valleys. The Marianas Trench, which extends approximately 36,000 feet below sea level, is the deepest ocean trench.
Hence, ocean trenches is created when an oceanic plate and a continental plate converge.
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1. What evidence of a PHYSICAL change would you find in a holiday feast or over Thanksgiving break? For example, describe a change in mass, volume, state or shape where the original substance has not been chemically changed. Be specific and give details.
please Help me
Which celestial object is found in the Kuiper Belt?
Answer:
Pluto, Pluto's Moons, and other asteroids
Explanation:
The Kuiper Belt is just another Asteroid belt but on the outside of the solar system and Pluto is a dwarf-planet, a large asteroid that is spherical like a planet and has the same characteristics as planets but way too small, that was found in the belt along with some moons. Asteroids were also found in the kuiper belt, a lot of them were really big asteroids. (The answer might just be pluto depending if it wants one object as the answer)
Hope this helps you. :)
What is the net force of this car?
A. 10 N
B. 17 N
C. 0 N
D. 3 N
Answer:
the correct option is D
Which activity would help maintain homeostasis during exercise?
increasing the amount of water excreted from the kidneys
decreasing the heart rate
developing goose bumps on the skin
speeding up the rate of breathing
Answer:
Speeding up the rate if breathing
Explanation:
The more and quicker you breathe, the more oxygen your cells get
Help again i need it quick
Answer:
it seems that the answer should be 7.5 mph as the average
Explanation:
sorry i did (s x t) when it was (s/t)
Answer:
15mph
Explanation:
Hope this helps
Which appear goes along with this picture
Answer:
it seem to be an illuviation because you can see clouds
Explanation:
Why would the crash affect the motion of the satellite? Write at least 1 paragraph and good vocab.
Answer:
The speed and direction of the two satellites would differ from each other cause the asteroids differ in size. The bigger one would have moved the satellite farther of track and go a bit faster than the other asteroid. The other one wont move it as far and the speed would not change by much.
i hope this helped
Calculate the mass on the following pic
Answer:
1. 25 2. 3.75 3. 21.5
Explanation:
M=FxA
1. 5x5
2. 5x.75
3. 5x4.3
the force on all is 5n
HELP ASAP ... i have no idea
I'm not even sure if this is the right category but here we go. All my points and brainliest. I'm counting on you guys.
Write a scientific explanation to answer the following question:
How do particles in matter change when a substance becomes hotter, cools down, or changes state?
Be sure to include the three main points of a scientific explanation:
A scientific claim
Evidence to support the claim
Reasoning that connects the evidence to the claim
Answer:
When a substance is heated, it gains thermal energy. Therefore, its particles move faster and its temperature rises. When a substance is cooled, it loses thermal energy, which causes its particles to move more slowly and its temperature to drop.
Explanation:
Brainliest???
The narrator of a story
is always the same person as the author.
is always part of the narrative.
determines the story's characters and events.
provides information about characters and events
I need help!
Here are the screenshots-
A ball bounces on the ground. How do the ball and the ground act on each other?(1 point)
A. The ball exerts a stronger force than the ground but in the same direction.
B. The ball and the ground exert forces on each other with equal magnitude and in the same direction.
C. The ball and the ground exert forces on each other with equal magnitude but in opposite directions.
D. The ball exerts a stronger force than the ground and in the opposite direction.
If a ball bounces on the ground, Then the ball and the ground exert forces on each other with an equal magnitude but in opposite directions. The correct option is C.
What is Newton's third law of motion?Newton's third law of motion, also known as the law of action and reaction, states that for every action, there is an equal and opposite reaction. This means that whenever one object exerts a force on a second object, the second object exerts an equal and opposite force on the first object.
In other words, forces always occur in pairs. When you push on a wall, for example, the wall pushes back on you with an equal force in the opposite direction. This is why you don't fall through the wall when you push on it.
This law applies to all objects, regardless of their size or speed. It is one of the fundamental principles of physics and is used to explain many everyday phenomena, such as why a balloon moves forward when air is expelled from it or why a boat moves forward when it pushes water backward.
Newton's third law of motion is important in many fields of science and engineering, including mechanics, aerodynamics, and rocket science. It plays a key role in the design and operation of many machines and devices, from cars and airplanes to rockets and satellites.
Here in the Question,
When a ball bounces on the ground, the ball exerts a downward force on the ground due to its weight. This force causes the ball to compress and deform slightly as it collides with the ground. At the same time, the ground exerts an equal and opposite force on the ball, known as the normal force. This force pushes the ball upward and causes it to rebound from the ground.
According to Newton's third law of motion, for every action, there is an equal and opposite reaction.
So, the force exerted by the ball on the ground is equal in magnitude but opposite in direction to the force exerted by the ground on the ball. This is why the ball bounces back up into the air after colliding with the ground.
Therefore, the ball and the ground act on each other with equal and opposite forces.
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A student pushes a chair into a desk. If the student's push is the action force, then what is the reaction force in this example of Newton's third law?
A the force from the chair on the student
B the force that the chair exerts on the desk after it is pushed in
C the force of friction acting on the chair
D the force of gravity acting on the chair
Answer: C
Explanation:
A ball is thrown up into the air. Describe the work done on the ball and the energy transformations that take place
between the time the ball is released and the time it reaches its maximum height.
Answer:
When a ball is thrown straight up into the air, all its initial kinetic energy is converted into gravitational potential energy when it reaches its maximum height.
Explanation:
hope this helps
A stone falls from rest from the top of a high tower. Ignore air resistance and take g = 10m/s².
What is its velocity after 1s
Answer:
10
Explanation:
No thing its simple a equals v minus u upon t
Rahim is watching his favorite football team on television. In order to work, the television must be plugged into an electrical outlet. When the television gets turned on, what is the main energy transformation demonstrated by the television?? heres the answer choices A. heat energy into electrical energy
B. electrical energy into heat energy
C. electrical energy into light energy
D. light energy into electrical energy
What are the 3 main causes of global warming?
Answer:
Carbon pollution.
Climate change.
Energy.
Explanation:
Answer:
carbon pollution.
climate change.
energy.
Explanation: