True or false when matter changes state, its chemical properties change
In the four-stroke internal combustion engine, fuel is ignited during the ____ stroke.
How can you use weights of the filled cell models to determine the rate and direction of diffusion?
You can use the weights of filled cell models to determine the rate and direction of diffusion by following these steps: weigh an empty cell model, fill the cell and weigh it again, calculate the difference in weight, divide the mass by time to calculate rate, and determine the direction based on weight change.
Explanation:In order to determine the rate and direction of diffusion using weights of the filled cell models, you can follow these steps:
Start by weighing an empty cell model.Fill the cell with a substance and weigh it again.Calculate the difference in weight between the empty cell and the filled cell. This represents the mass of the substance that diffused into the cell.Divide the mass of the substance by the time it took for diffusion to occur. This gives you the rate of diffusion.If the weight increased, the substance diffused into the cell. If the weight decreased, the substance diffused out of the cell.This method allows you to determine both the rate and direction of diffusion based on the change in weight of the filled cell models.
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What do wind and moving water have in common? Select one: They both have electrical energy They both have elastic potential energy They both have electromagnetic energy (light) They both have kinetic energy
Wind and moving water both have kinetic energy, which is the energy an object has due to its motion. This energy can be harnessed to produce electricity, for example, in wind turbines and hydroelectric plants.
Explanation:What wind and moving water have in common is that they both have kinetic energy. Kinetic energy is the energy an object possesses due to its motion. Wind, being moving air, possesses kinetic energy as it has mass and velocity. The same applies to moving water. Whether in the form of a running stream or waves in the ocean, the moving water particles possess kinetic energy due to their motion.
For instance, kinetic energy is the type of energy harnessed by wind turbines and hydroelectric plants. Wind turbines use the kinetic energy in wind to turn the blades of the turbine, which generates electricity. Similarly, hydroelectric plants use the kinetic energy of moving water to turn a turbine and generate electricity.
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If the __________ is damaged, a person can form visual memories but not verbal memories.
If the thalamus is damaged of a person, then they can only form visual memories but not verbal memories.
Further Explanation:
The structure of a thalamus is a midline symmetrical of two halves. It is present in the brain of a vertebrate. They are present in between the cerebral cortex and midbrain. The thalamus is a part of diencephalon which in turn is a part of the forebrain. The main functions of a thalamus are:
Pass motor and sensory signals to cerebral cortex Regulation of sleep, alertness and consciousness Major product of the embryonic diencephalon Responsible for learning and memory
The inputs from the receptors are received by the nuclei present in the thalamus. The sensory information is processed by it and then the information is transfer to the cerebral cortex. In this way, it acts as a gateway for the sensory impulses it receives from the various receptors. Thus, if a thalamus of an individual is damaged, then they can only make visual memories. They cannot make verbal memories.
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Answer Details:
Grade: Senior School
Subject: Biology
Topic: Thalamus
Keywords:
Thalamus, symmetrical, brain, cerebral cortex, midbrain, sensory information, receptors, sensory impulse, gateway, nuclei, sleep, diencephalon.
Radio station klbj broadcasts at a frequency of 93.7 mhz. determine the length of the waves that corresponds to this frequency.
The Answer in significant figures is 3.20 meters. The full Answer is 3.201707577*10^0 meters
Explanation:
You must first convert 93.7Mhz to hz: 93.7mhz * 10^6hz/1Mhz = 9.37*10^7.
Next, since all EM waves' frequency and wavelength = the speed of light(c)(3.00*10^8m/s), insert the new frequency (hertz) into the formula below and solve for Wavelength (lambda)
c=(lambda)(hertz), manipulate the equation to solve for wavelength (lambda)
(lambda)=(C) / (hertz) ; Hertz = hz = s^-1 or 1/s
lambda = 3.00*10^8m/s / 9.37*10^7hz (^^remember hz = 1/s)
Since hz = 1/s, both of the factors have 1/s in the variables' place, so the 1/s cancels and your left with m (meters)
= 3.201707577 meters
“Plant growth is dependent on the amount of fertilizer applied.” That was the hypothesis Mel and Bill decided on for their science project. They planted identical seeds in the same potting mix, and they used identical pots for each plant. Each pot received the same amount of water, and all the pots were placed in the same location in the greenhouse. After three weeks, Mel and Bill were able to summarize their data. Based on the data collected, what would be the MOST appropriate research question for further study?
D) What is the optimum amount of fertilizer for continued plant growth?
Which is a correct example of the principle of conservation of momentum? A) reversing of a car at a dead end B) conversion of radio waves to sound C) deforming of a balloon on being burst D) bouncing of a basketball off the board
A correct example of the principle of conservation of momentum is the bouncing of a basketball off the board. Therefore, option D is correct.
What is momentum ?As momentum depends on both velocity and the direction of the body's motion, it is quantified by "mass velocity". Since velocity is a vector and mass is a scalar, momentum is a vector quantity. Mass times speed equals momentum.
"The motion of an item equal to the product of its mass and its velocity" is referred to as momentum. When something is said to have momentum, it refers to its unique mass and direction of motion.
Here, we offer a few more ideas that will help us describe motion in the future. Before Newton, the French scientist and philosopher Descartes introduced the first of them, called momentum.
Thus, option D is correct.
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What did Galileo discover when he dropped 2 cannon balls of different weights from the leaning tower of pisa
the distance between two cities is 300 kilometers. is this longer or shorter than 200 miles?
Diffusion occurs faster in gases than in liquids because _____.
the particles are moving faster
the particles are further apart
the particles are moving slower
there are more inter-molecular attractions between particles
Answer:
the particles are moving faster
Explanation:
As we know that diffusion means the rate of escape of gas from small opening.
So here the diffusion rate is basically related to the speed of gas molecules to escape out of the closed container.
So here rate of diffusion is given as
[tex]Rate = \sqrt{\frac{P}{\rho}}[/tex]
so it depends on pressure of gas and density of gas.
Also we know that gas molecules are loosely bounded to each other as we compare the bonding between molecules of liquid.
So here we will say that correct answer is
the particles are moving faster
If Xena's position at time zero is 0 and Gabriele's position is 60 m, what time interval is needed for Xena to catch Gabriele?
x1 =8t
x2=6t+60
x1=x2
8t=6t+60
2t=60
t=30 s
If you push down on a piston in a fluid, what happens?
a) The pressure increases in the fluid near the place where you pushed.
b) The pressure is absorbed by the fluid and does not increase
c) The pressure increases in the far corners of the container
d) The pressure increases uniformly throughout the fluid.
If you push down on a piston in a fluid, then the pressure increases uniformly throughout the fluid. Hence, option D is correct.
What is a Piston?A piston is a part of a variety of comparable mechanisms, including reciprocating engines, reciprocating pumps, gas compressors, hydraulic cylinders, and pneumatic cylinders. It is the moving part, housed by a cylinder, and is sealed off from the atmosphere by piston rings.
The function of a piston rod and/or connecting rod in an engine is to transmit force from the expanding gas in the cylinder to the crankshaft. In a pump, the process is switched around so that force is transferred from the crankshaft to the piston in order to compress or eject the fluid in the cylinder. The piston can cover and reveal openings in the cylinder to function as a valve in some engines.
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Which of the fundamental forces pulled together hot, dense areas of matter in the early universe to begin the process of star formation?
The Gravitational force pulled together areas of matter in the early universe to begin the process of star formation.
Fundamental ForcesThe four fundamental forces that work in the universe are given below.
The strong force, The weak force, The electromagnetic force The gravitational force.These fundamental forces have different strengths and they work over different ranges and directions.
The gravitational force operates on all objects of the universe in the infinite range. Gravitation is the most important of the four fundamental forces for astronomical objects over astronomical distances for two reasons.
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Neglecting air resistance, when does a struck baseball accelerate downward at a rate of 9.8 m/s2?
Answer:
Only at the precise moment when it has reached maximum height.
Explanation:
It's the precise moment when it accelerates downward.
how can we help people who are suffering from depression or metal illnesses
Answer:
Being nice and being their for them and making sure that they are never alone. Talk to them and make them feel safe.
Explanation:
List the following organisms in order of ascending size; bacteria, human sperm, red blood cell, virus, and lymphocyte?
how can you be certain that a chemical change has occurred?
a) there is at least one substance that was not present before the change
b) the amount of measurable material is different after the change
c) the change substance have become warmer
d) at least one substance undergoes a change of state
What is the relationship between the speed of light and the index of refraction of a transparent substance?
What is a real world application of atwood's machine?
Atwood's machine, a physics concept, is used in real world applications like the early design of elevators, analyzing parachute descent in aerodynamics, and in designing weight-based fitness equipment.
Explanation:An Atwood's machine is a device used in physics to demonstrate the principle of motion. The machine consists of two objects of different masses connected by a light, inextensible cord over a frictionless pulley.
A real world application of the Atwood's machine is found in elevators. In the early design of elevators, the car was one mass and a counterweight acted as the second mass. The counterweight ensured that the elevator car could be lifted smoothly and with minimal force, embodying the motion principle demonstrated by the Atwood's machine.
The Atwood's machine can also be applied in the field of aerodynamics. A parachute carrying a load can be modeled as an Atwood's machine, helping to calculate the rate of descent.
Furthermore, in physical therapy and fitness centers, the machine's principles apply to weight-based gym equipment. Different weights on either side of the cable help determine the force required to lift them.
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Which is a drawback to the use of oil shale to produce energy
in the design a thermos lab, you compared the temperature of your thermos with a container that you did not insulate. what was the container for?
In the design of a thermos lab, the container that is used for comparison purposes with the thermos is typically an uninsulated container or a regular open container. This is done to demonstrate the effectiveness of the insulation in the thermos and highlight its ability to retain heat or cold compared to a container without insulation.
Purpose of uninsulated container
By checking the temperature of the thermos and the uninsulated container, you can see how heat moves differently between them. The thermos keeps drinks hot or cold for a long time because it doesn't let heat get in or out easily. But a regular container lets heat in and out more easily.
This comparison shows how well the thermos can keep drinks hot or cold for a long time. It says it's important to use insulation to stop heat from escaping, and it shows how using a thermos can keep things at the right temperature for longer.
If an electrically uncharged body is contacted by an electrically charged body, the uncharged body will
A (an) _____ is a resettable device that protects a circuit from becoming overloaded.
energy transformations when you cook sausages on a campfire burning wood
Actually in this case heat energy is being transferred. Heat energy or thermal energy is transferred from the burning of wood to the sausages for it to be cooked. The sausage is being heated by the fire and is absorbing the heat or thermal energy.
What is the basic unit of matter? atom cell bacterium molecule Description
the impulse given to a ball with massb of 2kg is 16 Ns. if the ball starts grin the rest, what is its final velocity?
A) 8ms
B) 30ms
C) 32ms
you add 50mL of water at 10 degrees c to 50 mL of water at 80 degrees c. What is the most likely final temperature of the mixture ?
Answer:
45 degrees
Explanation:
The most likely final temperature of the mixture is 45 °C
What is heat?The increment in temperature adds up the thermal energy into the object. This energy is Heat energy.
Given added 50mL of water at 10°C to 50 mL of water at 80°C.
Heat lost or gained is given by Q =m Cv ΔT
Heat lost = heat gain
50 x 4.18 x (T -10)= 50 x 4.18 x (80 - T)
T-10 = 80 - T
2T = 90
T = 45°C
Thus, final temperature of the mixture is 45 °C.
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Which substance is an example of an element? bronze copper methane rust
how caffeine can affect your stress level. How does it affect your cardiorespiratory system?
Answer:
Caffeine and stress can both elevate cortisol levels. High amounts of caffeine can lead to the negative health effects associated with prolonged elevated levels of cortisol. However, small to moderate amounts of caffeine can lift your mood and give you a boost. Caffeine can raise your heart rate and cause extra heartbeats. And using large amounts of it for long periods can increase your risk of having a heart attack.
Explanation:
Hopefully this is right.