Answer:
do you have any pictures or any answers we can choose from?
Explanation:
This is an incomplete question.
The table below describes some processes in which food is changed as it travels through the digestive system.
Which of the processes describe only physical changes in the food particles?
Processes 1, 2, 3, and 4
Processes 1, 3, and 6
Processes 2, 5, and 6
Processes 1, 3, and 4
Answer:
processes 1,3, and 4
Explanation:
i think
Teeth tear the food, the tongue reforms the food, and the stomach muscles break the food into small pieces are physical changes. Therefore, option (4) is correct.
What is a physical change?A physical change can take place when the identity of the matter does not but some of the characteristics of the matter change. Physical changes of matter are categorized as reversible and irreversible in nature. For example, the freezing of water is a reversible physical change since the ice cube can melt again.
Physical change can be described as a kind of change where only the physical properties of substances such as solubility, color, odor, etc. can change. During physical changes, no chemical bonds are formed or broken between atoms.
The chemical nature and chemical composition of the matter remain unchanged during a physical change.
In the digestive system, the breaking of food by teeth, tongue, and stomach muscles is a physical change. The food mixed with acids and broken by enzymes is a chemical change.
Learn more about physical change, here:
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Is friction an unbalanced force yes or no?
Answer: (Remember: a force is not needed to keep a moving object moving to the right.) ... Yet there is no force present to balance the force of friction. As the book moves to the right, friction acts to the left to slow the book down. There is an unbalanced force; and as such, the book changes its state of motion.
Explanation:
When the forces acting on an object are unbalanced, they do not cancel out one another. An unbalanced force acting on an object results in the object's motion changing. ... Friction is a force that resists the motion or the tendency toward motion between two objects in contact with each other.
(hope this helps :))
A 0.145 kg baseball is flying at a height of 2.50 m. How much potential energy
does the ball have?
Gravitational potential energy is the energy stored in an object as the result of its vertical position or height. It can be calculated as its weight times the height. This is:
[tex]\boxed{U_g=W\cdot h=mgh}[/tex]
Where:
W is the weight of the object m is the mass g is gravitational acceleration h is the heightEvaluating:
[tex]U_g = (0.145\;kg)(9.8\;m/s^2)(2.50\;m)\\\\\boxed{U_g=3.5525\;J}[/tex]
R/ The ball has 3.5525 J of potential energy.
Anyone can help me with this
Answer:
this is in the middle of the wheel and helps it rotate it is an axle
Which evidence did Alfred Wegener’s original theory of continental drift have access to?
Answer:
Evidence for continental drift
Wegener knew that fossil plants and animals such as mesosaurs, a freshwater reptile found only South America and Africa during the Permian period, could be found on many continents. He also matched up rocks on either side of the Atlantic Ocean like puzzle pieces.
Explanation:
A paper airplane moves at a constant velocity of 10 m/s to the east when there is no wind of 19 m/s begins to blow?
Answer: So if the steady easterly wind of 19 m/s begins to blow more than the 10 m/s it just needs more wind and direction So the resultant has to be 29 m/s east.
What do the magnets in a computer hard drive and in the strip on a credit
card have in common?
The answer is they store information
Answer:
they store information
Explanation:
Information are encoded on the magnetic part of a hard drive and the strip of a credit card.
On the drive, series of magnetic fields are used to encode information. The data is stored in form of zeros and ones. A credit card has a magnetic strip where information is encoded. The stripe provides a readability function for electronic devices.Answer:
Tysm
Explanation:
Let's assume you have a mass of 75 kg and your jeep has a mass of 1500 kg. How much greater is the force of gravity on the jeep?
A. 0.05 times
B. 20 times
C. 1500 times
Answer:
20 times
Explanation:
75kg × 20 = 1500kg
Amount of time greater is the force of gravity is 20 times
Given:
Mass of person = 75 kg
Mass of jeep = 1500 kg
Find:
Amount of time greater is the force of gravity
Computation:
Amount of time greater is the force of gravity = Mass of jeep / Mass of person
Amount of time greater is the force of gravity = 1500 / 75
Amount of time greater is the force of gravity = 20 times
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There is a species of Darwin’s finch on the Galapagos Islands that can exert a force of 205N with its beak as it cracks open a seed case. If its beak moves through a distance of 0.40 cm during this operation, how much work does the finch do to get at the seed inside the case?
Answer:
0.82 J
Explanation:
We know that work done W = Fd where F = force and d = distance moved in the direction of the force.
Now, the finch on Galapagos Islands exerts a force of 205 N with its beak as it cracks open a seed case. So, F = 205 N. If the beak moves a distance of 0.40 cm during this operation, then d = 0.40 cm = 0.004 m.
We now compute W.
So, W = Fd
= 205 N × 0.004 m
= 0.82 J
So the finch does work of 0.82 J to get at the seed inside the case.
The simulation shows a game of tug-of-war. Place a blue team and a red team with same-sized people on each side of the rope. What can you say about the sizes of the left and right arrows?
Answer:
When same-sized team members are placed on each side of the rope, the sizes of the arrows on both sides remain the same.
Explanation:
This is the answer on Plato
Answer:
When same-sized team members are placed on each side of the rope, the sizes of the arrows on both sides remain the same.
Explanation:
A red cart has a mass of 4 kg and a velocity of 5 m/s. There is a 2-kg blue cart that is parked and not moving, thus its velocity is 0 m/s.
The red cart hits the blue cart.
The blue cart starts to move forward with a velocity of 6 m/s. The red cart bounces off of the blue cart and moves backwards, at a velocity of 2 m/s.
Name the TYPE of collision that occurred.
Calculate the BEFORE momentum of the red cart. Use correct units.
Calculate the BEFORE momentum of the blue cart. Use correct units.
Calculate the AFTER momentum of the red cart. Use correct units.
Calculate the AFTER momentum of the blue cart. Use correct units.
Calculate the SYSTEM’S TOTAL MOMENTUM before the collision. Use correct units.
Calculate the SYSTEM’S TOTAL MOMENTUM after the collision. Use correct units.
EXPLAIN how this example supports the Law of Conservation of Momentum. Use the evidence to support your answer of how this example supports the Law of Conservation of Momentum. Use correct units. Be specific.
Answer:dam hold up
Explanation:
For a projectile with no air resistance, at the peak of its path, _______________.
Answer: "For a projectile with no air resistance, at the peak of its path, it's velocity is equal to zero"
Explanation:
Suppose that you throw an object up. The initial vertical velocity will be positive, and the acceleration (the gravitational acceleration) will point downwards, meaning that it opposes to the initial direction of the velocity, and that decreases the velocity as the time goes by.
There will be a point where the velocity ( that was positive until now, so until now the height of the object was increasing), is equal to zero, this means that at this moment the object stops moving, and after, because we still have negative acceleration, the velocity will start become negative, and the object will fall down.
Then that point where the velocity was zero is the peak of its path, then we can conclude that:
"For a projectile with no air resistance, at the peak of its path, it's velocity is equal to zero"
A 20 g bullet is shot from a 10 kg gun with a velocity of 400 m/s. What
is the speed of recoil of the gun?
Answer: -.80m/s
Explanation:
What is the water pressure at a depth of 30m in pascals?
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The water pressure at depth h from the water surface is obtained from the following equation.
[tex]Pressure = (density) \times (gravity \: \: acceleration) \times (depth \: \: from \: \: the \: \: water \: \: surface) \\ [/tex]
[tex]density = 1000 \: \: \frac{kg}{ {m}^{3} } [/tex]
[tex]gravity \: \: acceleration = 10 \: \: \frac{m}{ {s}^{2} } [/tex]
[tex]depth \: \: from \: \: the \: \: the \: \: water \: \: surface = 30 \: \: m \\ [/tex]
______________________________________
[tex]P = 1000 \times 10 \times 30[/tex]
[tex]P = 300,000 \: \: pascals[/tex]
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I NEED THIS ASAP
The labeled images each represent the wave patterns found in the electromagnetic wave spectrum.
Which image is correctly labeled for frequency, wavelength, and radiant energy?
Answer:
Srry !!!
Explanation:
Image is not clear.
A rifle recoils from firing a bullet. The speed of the rifle’s recoil is small compared to the speed of the bullet because the rifle has a great deal more ____ than the bullet.
a. force
b. speed
c. distance
d. mass
Answer: mass
Explanation:
i remember my teacher saying it lol
A rifle recoils from firing a bullet. The speed of the rifle’s recoil is small compared to the speed of the bullet because the rifle has a great deal more mass than the bullet.
What is mass?Mass is a numerical measure of inertia, which is a basic feature of all matter. It is, in effect, a body of matter's resistance to a change in speed or position caused by the application of a force.
In the International System of Units (SI), the kilogram is the unit of mass.
A rifle recoils from firing a bullet. The speed of the rifle’s recoil is small compared to the speed of the bullet because the rifle has a great deal more mass than the bullet.
Hence d is the correct option.
To learn more about the mass refer to the link;
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An object that has the ability to do work has __________ energy.
Group of answer choices
magnetic
kinetic
potential
electrical
Answer:
kinetic
Explanation:
(URGENT)
Which describes increasing the efficiency of an energy resource?
A>Making cars that get better gas mileage
B>Using biomass instead of coal
C>Turning off the lights when leaving a room
D>Switching from coal to solar
Answer:
A Making cars that get better gas mileage
Explanation:
Getting cars that gets better gas mileage are increasing the efficiency of fossil fuels.
Efficiency is the tendency to avoid wastage of resources. When the most value is gotten from a resource, the efficiency is high. A better car engine and other electrical components of the car that reduces the wastage of fuel helps fuel efficiency.If an object's velocity and acceleration are both in the different directions, will the object
speed up or slow down?it would |
4. How much mass is required to exert a force of 25 Newtons, accelerating at 5 m/s?
Compare and contrast mechanical energy of a projectile with mechanical energy of a swing
Answer:
mechanical energy is due to the position and the motion of an object in a system. A projectile moves in a curve. When the object leaves, it has mostly kinetic energy
Explanation:
On a swing, the ride starts with a push, giving you kinetic energy.
When the pendulum swings, its potential energy transforms into kinetic energy.While projectile energy transforms from kinetic energy to potential energy.
What is the difference between projectile and swing?
Swinging from a pendulum, such as a rope swing or a hanging vine, is more difficult than swinging from a cannonball projectile.
A type of motion in which an item moves along a bilaterally symmetrical, parabolic direction is known as projectile motion.
The path that the item takes is referred to as its trajectory. Projectile motion occurs only when a single force is supplied at the start of the trajectory, after which the only interference comes from gravity.
Because gravity is the sole force acting on a projectile while it is in the air, the total energy does not vary at any point in its travel,
The energy can change forms from kinetic energy, The energy of motion, to potential energy, or from potential energy to kinetic energy.
When the pendulum swings, its potential energy transforms into kinetic energy, which is then converted back to potential energy, which is then converted back to kinetic energy, and so on.
Let's try it with a tire swing as a pendulum to see how it works! All of the swing's mechanical energy is potential energy at its beginning location.
Hence when the pendulum swings, its potential energy transforms into kinetic energy. While projectile energy transforms from kinetic energy to potential energy.
To learn more about the swing refer to the link;
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can someone please help me? i don’t wanna fail :(
Answer:
All of the above
Explanation:
The larger truck has greater mass than the car thus allowing it to build up momentum faster.
Answer:
The answer is momentum
Explanation:
I have done that question before, And I got it right.
Ejercicio 1: Un cuerpo gira en un círculo de 8cm de diámetro con una rapidez constante
de 7km/h. ¿Cuál es la aceleración centrípeta expresada en m/s? Recordar que el radio es
la mitad del diámetro.
Ejercicio 2: Las cargas están interactuando en un medio desconocido con una fuerza de
-5N con una separación de 40cm teniendo sus respectivas cargas de 3.5 milicoulombs y
6 milicoulombs.
Answer:
Exercise 1;
The centripetal acceleration is approximately 94.52 m/s²
Explanation:
1) The given parameters are;
The diameter of the circle = 8 cm = 0.08 m
The radius of the circle = Diameter/2 = 0.08/2 = 0.04 m
The speed of motion = 7 km/h = 1.944444 m/s
The centripetal acceleration = v²/r = 1.944444²/0.04 ≈ 94.52 m/s²
The centripetal acceleration ≈ 94.52 m/s²
can someone help please
What’s the answer for this problem?
What is Newtons third law of motion?
Answer:
His third law states that for every action (force) in nature there is an equal and opposite reaction. Explanation:
Answer:
His third law states that for every action (force) in nature there is an equal and opposite reaction
Explanation:
In other words, if object A exerts a force on object B, then object B also exerts an equal and opposite force on object A. Notice that the forces are exerted on different objects.
If the 5-N force and the 12-N force form a 90 degree angle, what is the magnitude of the force acting in the direction of the dashed arrow
Answer:
13NExplanation:
Kindly see attached file for your reference
Step one:
given data
the horizontal component of the force= 12N
the vertical component of the force= 5N
The dashed arrow represents the hypotenuse of the triangle, hence the resultant of the force system.
By implication of this, we will use the Pythagoras theorem to solve for the resultant force
Step two:
[tex]F_R=\sqrt{F_H^2+F_V^2}\\\\F_R= \sqrt{12^2+5^2}\\\\F_R=\sqrt{144+25}\\\\F_R=\sqrt{169}\\\\F_R=13N[/tex]
worth brainliest!! help me on both and explain I will spam ur questions if u answer something dumb
Answer:
Answers are below hopefully they're correct and what u need
Explanation:
1. Step 1: Given
The distance is 600 km, since 100(speed) x 6 (time) = 600
2. Step 2: Formula
s = d/t
d = t x s
t = d/s
3. Step 3: Substitue
s = 600/6
d = 100 x 6
t = 600/100
4. Step 4: Solve
600/6 = 100
100 x 6 = 600
600/100 = 6
Step 5: Answer
Therefore, the distance is 600km, the speed or rate is 100 km/hr, and the time is 6hrs.
NUMBER 2
1. Step 1: Given
Distance = 200 m
Rate or speed = 8m/s
Time = ?
2. Step 2: Formula
s = d/t
d = t x s
t = d/s
3. Step 3: Substitue
t = 200/8
s = 200/25
d = 25 x 8
4. Step 4: Solve
200/8 = 25
25 x 8 = 200
200/25 = 8
5. Step 5: Answer
Therefore, the time is 25sec, distance is 200m, and speed or rate is 8m/s
Answer:
vivi I is here and I will come up was wondering what do you think about this I don't know
A Martian rover found an interesting rock that could contain signs of what Mars was like long ago. It grabbed
it with its rover arm and raised it to a height of 0.2 m. Then it dropped it and found that it had a kinetic
energy of 12 J when it struck the ground. Note that Mars has an acceleration due to gravity of 3.77 m/s2.
Complete the following equations to determine the rock's potential energy if it were brought to earth and
dropped from a height of 1 meter. Use what you know about calculating gravitational potential energy to
correctly set up and solve the equation.
PE- m
XH
- PE
Answer:
It would be PE=16kg * 9.8 m/s^2 * 1m = 160 J
Explanation:
The person who asked this question ended up answering his own question so I'm here to let you know all that the answer was founded by the person whos posted the question himself full credit goes to him :)
Which of the following is a true statement?
The oceans replenish groundwater.
The oceans provide water for rivers and streams.
Lakes are only found in the Northern Hemisphere.
Coral reefs and sandbars create lagoons.
Answer:
LAST ONE
Explanation:
Answer:
Coral reefs and sandbars create lagoons.
Explanation:
"The combination of coral growth and water creates a lagoon. It may take as long as 300,000 years for an atoll formation to occur. Coastal lagoons form along gently sloping coasts. They are generally shallower than atoll lagoons and tend to be separated from the ocean by an island, reef, or sand bank." I got my information from google :)
Hope this helps :))))