What is the default storage mechanism for Core Data?A. XMLB. SQLiteC. Binary dataD. UserDefaults
Answers
The default storage mechanism for Core Data is B) SQLite.
Core Data is a framework provided by Apple that allows developers to manage the model layer objects in an application. It supports several different storage mechanisms, including XML, Binary data, and SQLite. However, SQLite is the default storage mechanism used by Core Data.
SQLite is a lightweight and fast database engine that is commonly used in mobile and desktop applications. It provides a reliable and scalable way to store and query data in an application.
Developers can customize the storage mechanism used by Core Data by specifying a different type of persistent store, but for most applications, B) SQLite provides a good balance of performance and functionality.
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Related Questions
Can someone please help me with this?? It's due in an hour and I've been stuck on it!
I've gotten the first three of all of them done, but I am stuck on the last two. You can probably look them up.
[Part One]
Mercury:
1. What shape is the orbit of Mercury?
2. Why do you think the Sun is not at the center of Mercury’s orbit?
3. What did you notice about the motion of Mercury in its orbit?
Click on each highlighted section and record the area. What do you notice about each area?
4. Click on the “Toggle Major Axes” button. Record any observation regarding the perihelion distance (Rp) and the aphelion distance (Ra).
Earth:
1. What is the orbit of the Earth?
2. Is the Sun at the center of the Earth’s orbit?
3. Describe the motion of the Earth throughout its orbit? Does it move at constant speed?
4. Click on each highlighted section and record the area. What do you notice about each area?
5. Click on the “Toggle Major Axes” button. Record any observation regarding the perihelion distance (Rp) and the aphelion distance (Ra).
Mars:
1. What is the orbit of the Mars?
2. Is the Sun at the center of the Mars’s orbit?
3. Describe the motion of Mars throughout its orbit? Does it move at constant speed?
4. Click on each highlighted section and record the area. What do you notice about each area?
5. Click on the “Toggle Major Axes” button. Record any observation regarding the perihelion distance (Rp) and the aphelion distance (Ra).
[Part Two]
Saturn:
1. What is the orbit of the Saturn?
2. Is the Sun at the center of the Saturn’s orbit?
3. Describe the motion of Saturn throughout its orbit? Does it move at constant speed?
4. Click on each highlighted section and record the area. What do you notice about each area?
5. Click on the “Toggle Major Axes” button. Record any observation regarding the perihelion distance (Rp) and the aphelion distance (Ra).
Neptune
1. What is the orbit of the Neptune?
2. Is the Sun at the center of the Nepturn’s orbit?
3. Describe the motion of Neptune throughout its orbit? Does it move at constant speed?
4. Click on each highlighted section and record the area. What do you notice about each area?
5. Click on the “Toggle Major Axes” button. Record any observation regarding the perihelion distance (Rp) and the aphelion distance (Ra).
Comet
1. What is the orbit of the comet?
2. Is the Sun at the center of the comet’s orbit?
3. Describe the motion of the comet throughout its orbit? Does it move at constant speed?
4. Click on each highlighted section and record the area. What do you notice about each area?
5. Click on the “Toggle Major Axes” button. Record any observation regarding the perihelion distance (Rp) and the aphelion distance (Ra).
Answers
Answer:
Earth:1. What is the orbit of the Earth?
365 days
2. Is the Sun at the center of the Earth’s orbit?
Yes
3. Describe the motion of the Earth throughout its orbit? Does it move at constant speed?
Yes, the Earth moves pretty quickly and orbits around the Sun at a rate of approximately 67,000 miles per hour.
Mars:1. What is the orbit of Mars?
The shape is circular, 687 days
2. Is the Sun at the center of Mars’s orbit?
Yes
3. Describe the motion of Mars throughout its orbit? Does it move at constant speed?
Travels at a regular steady speed, yes moves at a constant speed
Saturn:
1. What is the orbit of Saturn?
Circular, 29 years
2. Is the Sun at the center of Saturn’s orbit?
Yes
3. Describe the motion of Saturn throughout its orbit? Does it move at constant speed?
Just like Mars, it moves faster when it is closer to the sun, so yes.
Neptune:1. What is the orbit of Neptune?
Circular, 165 years
2. Is the Sun at the center of Nepturn’s orbit?
Yes
3. Describe the motion of Neptune throughout its orbit? Does it move at constant speed?
A steady consistent speed and yes it moves at a constant speed.
Comet:1. What is the orbit of the comet?
An oval, 200 years
2. Is the Sun at the center of the comet’s orbit?
No
3. Describe the motion of the comet throughout its orbit? Does it move at constant speed?
A comet starts off slow then picks up speed and no it does not move at a constant speed.
Explanation:
I hope this helps, You're welcome.
Q2. Fill in the blanks:
North Pole of a magnet will.....
.. North pole of another magnet.
South Pole of a magnet will.
North pole of a another magnet.
Needle of a compass lines up with the......
of a magnet.
You can find the shape of a magnetic field using........
...... and also a plotting.
Answers
Answer:
repel , attract,l am sure with these two blanks only
Answer:
Magnetic fields
A magnet creates a magnetic field around it. You cannot see a magnetic field, but you can observe its effects. A force is exerted on a magnetic material brought into a magnetic field. The force is a non-contact force because the magnet and the material do not have to touch each other.
Which class of hazards is characterized by thermal and mechanical hazards in the form of blast pressure waves, shrapnel and fragmentation, and incendiary thermal effects
Answers
Class 1 (Explosives) is the class of hazards that is characterized by thermal and mechanical hazards in the form of blast pressure waves, shrapnel and fragmentation, and incendiary thermal effects.
There are different classes of Hazards
Class 1 - Explosives
Class 2 - Gases
Class 3 - Flammable liquids
Class 4 - Flammable solids
Class 5 - Oxidizers
Class 6 - Toxic materials
Class 7 - Radioactive materials
Class 8 - Corrosive materials
Class 9 - Miscellaneous dangerous goods
Any substance or item, including a gadget, that is intended to function by explosion or that, through a chemical reaction inside itself, is capable of functioning similarly even if not intended to function by explosion, falls within the category of explosive materials (class 1).
Hence, Class 1 (Explosives) is the class of hazards that is characterized by thermal and mechanical hazards.
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Which scenario describes an effect of tornadoes on the environment? a section of forest that has been burned a path through a town with uprooted trees a town near the coast with heavy flooding a sandy beach that shows signs of erosion
Answers
Answer:
B; a path through a town with uprooted trees
Explanation:
took the quiz and got it right on edge2020!
The effect of tornadoes on the environment is a path through a town with uprooted trees. This, option B is correct.
What are tornadoes?It is the typical weather event that contains strong winds and leaves a path of destruction up to 50 miles long. It is also defined as the violently rotating column of air that touches the ground and is usually attached to a thunderstorm.
It is developed from a severe thunderstorm in warm, moist, and unstable air and extended up to 300 miles. The thunderstorms also generate heavy damage and devastate the environment in seconds and cause more fatalities.
A swirling, funnel-shaped, whirling wind is called a tornado and it is accompanied by hurricanes and storms. Strong tornadoes last for twenty minutes and the winds are between 200 mph to 300mph. The United States and Canada are mostly tornado-affecting countries.
The effect of tornadoes is a path through a town with uprooted trees and hence, the ideal solution is option B.
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What do the initial momentsafter the Big Bang have incommon with the universeas it exists now?
Answers
The initial moments after the Big Bang and the current universe have a few things in common like Expansion; Radiation; Structure formation; etc.
Expansion: The universe has been expanding since the Big Bang, and this expansion is still happening. The initial moments after the Big Bang were characterized by a period of rapid inflation, and this expansion has continued to shape the structure of the universe we see today.
Radiation: The universe was filled with intense radiation in the initial moments after the Big Bang, and this radiation still exists in the form of the cosmic microwave background (CMB) radiation.
This radiation is thought to have been produced about 380,000 years after the Big Bang and has been traveling through space ever since, providing us with valuable information about the early universe.
Formation of structure: The initial moments after the Big Bang set the stage for the formation of the large-scale structure of the universe we observe today, such as galaxies, stars, and planets. The tiny fluctuations in the density of matter in the early universe were amplified by gravitational attraction over time, leading to the formation of these structures.
However, there are also many differences between the early universe and the universe as it exists now. For example, the universe was much hotter and denser in the early moments after the Big Bang, and there were no stars or galaxies yet.
The universe has also undergone many complex physical processes over billions of years, such as the formation of black holes and the evolution of stars, that were not present in the early universe.
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suppose two boxes on a frictionless table are connected by a heavy cord of mass 1.00 kg. box a has a mass of 10.0 kg and box b has a mass of 12.0 kg. what is the acceleration of the boxes if a horizontal force of 36.0 n is applied?
Answers
The acceleration of the boxes is 1.57 m/s².
What is acceleration?Acceleration is rate of change of velocity with time. Due to having both direction and magnitude, it is a vector quantity. Si unit of acceleration is meter/second² (m/s²).
Given parameters:
Horizontal force acting on the boxes: F = 36.0 N.
Mass of box a: M₁= 10.0 kg
Mass of box b: M₂ = 12.0 kg.
Mass of the cord: m = 1.00 kg
We have to find : the acceleration of the boxes: a = ?
Total mass of the system = M₁ + M₂ + m = 10.0 kg + 12.0 kg +1.00 kg = 23.0 kg.
So, the acceleration of the boxes:
a = Horizontal force acting on the boxes / Total mass of the system
= 36.0 / 23.0 m/s²
= 1.57 m/s².
Hence, the acceleration of the boxes is 1.57 m/s².
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4. Which of the following is a payment to employees other than wages or salaries?
sole proprietorship
fringe benefit
corporations
liability
Answers
> Fringe benefits are additions to employee compensation, such as paid time off or use of a company car.
3 An un calibrated mercury in glass thermometer immersed in melting ice. The length of the mercury thread is 25 mm when the thermometer immersed in steam from pure water boiling under a pressure of 1 atmosphere the length of the thread is 200 mm what is the temperature in degree centigrade when the length of the thread is 95mm.
Answers
Answer:
25 mm = 0 deg C
200 mm = 100 deg C
200 - 25 = 175 = change in thread per 100 deg C
95 - 25 = 70 mm - change in thread from 0 deg C
70 / 175 * 100 = 40 deg C final temperature at 95 mm
whats the sum of (8+3m)+(-2+4x)+(9+8d)
Answers
Answer:
15 + 3m + 4x + 8d
Explanation:
The intensity of the distributed lood acting on the beams 25 kN/m.) Determine the magnitude of reaction at Express your answer to three significant figures and include the appropriate units O ? N Value Units Submit Request Answer Figure Part 6 1 of 1 Delane te zand y components of reaction all sing scalar notation Express your answers using three significant figures separated by a comma HV AED vec ?
Answers
The magnitude of reaction at the beam due to the distributed load of 25 kN/m is 625 N.
What is the magnitude of reaction to the distributed load?The magnitude of reaction at the beam can be determined by calculating the total force exerted by the distributed load. In this case, the distributed load is given as 25 kN/m. To find the magnitude of reaction, we multiply the distributed load by the length of the beam.
Therefore, the magnitude of reaction is 25 kN/m multiplied by the length of the beam in meters. By performing the calculation, we obtain the value of 625 N as the magnitude of reaction at the beam due to the distributed load. This represents the total force exerted by the distributed load on the beam.
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What is one way that nuclear fission and nuclear fusion are similar? A. Nuclei are split into smaller nuclei. B. Atoms are altered in both processes. C. Small nuclei combine to form larger nuclei. D. They are both used to produce electrical power.
Answers
Answer:
B. Atoms are altered in both processes
Explanation:
Answer: B. Atoms are altered in both processes
Explanation:
If car is going at a speed of 80 km/h how far will it travel in two hours
Answers
Answer: 160 km
Explanation:
What is the expected value of the slope for a graph of the mass of displaced water (mdisplaced) versus the mass of the object (mobject)?
Answers
Water displacement is exactly proportional to object mass, and the slope of the graph should match water density.
The expected value of the slope for a graph of the mass of displaced water (mdisplaced) versus the mass of the object (mobject) is equal to the density of water, which is approximately 1000 kg/m^3.
This is because the mass of displaced water is equal to the volume of water displaced by the object multiplied by the density of water. According to Archimedes' principle, the buoyant force on the object is equal to the weight of the displaced water. Therefore, the mass of displaced water is directly proportional to the mass of the object, and the slope of the graph should be equal to the density of water.
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Over the course of a year, the tropical regions of the earth near the equator absorb ___________ solar energy than they release infrared energy into space.
Answers
Over the course of a year, the tropical regions of the earth near the equator absorb more solar energy than they release infrared energy into space. This phenomenon is primarily due to the high incidence of direct sunlight and the presence of vast expanses of warm ocean waters in tropical regions.
The equatorial region receives a significant amount of solar radiation throughout the year due to its proximity to the sun. The sun's rays are more concentrated and direct in this area, resulting in higher solar energy absorption. The warm ocean waters act as a heat reservoir, absorbing and storing solar energy, further contributing to the net energy gain in the tropical regions.
In contrast, the release of infrared energy into space occurs through a process known as thermal radiation. All objects with a temperature above absolute zero emit infrared radiation. However, in the tropical regions, the energy gained from solar radiation exceeds the amount of infrared energy released into space, resulting in a net energy gain.
This energy imbalance in favor of solar absorption leads to the heating of the tropical regions, contributing to the formation of the Earth's tropical climate zones and playing a crucial role in driving global weather patterns and atmospheric circulation.
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When we dissolve a substance in water, a -------- is formed
Answers
Answer:
solution
Explanation:
Answer:
When a substance dissolves in water, you can’t see it anymore, it’s still there, but has mixed with the water to make a transparent liquid called a solution. The bonds in salt compounds are called ionic because they both have an electrical charge—the chloride ion is negatively charged and the sodium ion is positively charged.
Explanation:
How could you increase the gravitational potential energy of an object without changing its mass and gravity?
A. Make the object larger
B. Raise the object farther off the ground
C. Lower the object towards the ground
D. Allow the object to roll on the ground
Answers
Answer:
B Raise the object farther off the ground
13. A lever does 5.0 J of work on a 0.10-kg ball bearing in a pinball machine. The ball's
resulting speed just after leaving the lever is -
.5 m/s
10 m/s
1 m/s
5 m/s
CLEAR ALL
Answers
Answer:
The resulting speed of the ball is;
10 m/s
Explanation:
The given parameters are;
The amount of work done by the lever = 5.0 J
The mass of the ball on which the work is done, m = 0.10 kg
By the principle of conservation of energy, we have;
The work done by the lever = The kinetic energy. K.E., gained by the ball
The kinetic energy, K.E., is given by K.E. = 1/2·m·v²
Where, for the ball, we have;
m = The mass of the ball
v = The resulting speed of the ball
Therefore, by substituting the known values, we have;
The work done by the lever = 5.0 J = The kinetic energy. K.E., gained by the ball = 1/2 × m × v² = 1/2 × 0.10 kg × v²
∴ 5.0 J = 1/2 × 0.10 kg × v²
v² = 5.0 J/(1/2 × 0.10 kg) = 100 m²/s²
v = √(100 m²/s²) = 10 m/s
The resulting speed of the ball, v = 10 m/s.
physics
what is the difference between the base quantities and berived quantities
Answers
Answer:
fundamental units
Explanation:
The kinematic equations are only
valid if which of the following is
constant?
A) a
C) Δx
B) Vf
D) t
Answers
Answer:
a
Explanation:
kinematical equations are only valid for motion with constant acceleration (uniformly accelerated motion).
Hopefully this answer helped you!!!
A circuit contains a 1. 5 volt battery and a bulb with a resistance of 3 ohms. Calculate the current
Answers
if you rub a balloon on your hair, it becomes charged, and as a result It can stick to your head without being held there. why doesn't it fall on the ground?
Answers
The balloon doesn't fall on the ground. Because the electrical field around your head disrupts Earth's gravitational field. Option A is correct.
What is the electrostatic force, and how does it work?It is a force imposed by one charge on another as a result of the field. The electrostatic force produced by one line charge on another line charge separated by r is determined by the charge potency of each charge as well as the separation distance between them.
When you brush a balloon against your hair, it charges up and can attach to your head without being kept in place.
Because the electrical field surrounding your head interrupts Earth's gravitational field, it does not fall to the earth.
Hence, option A is correct.
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What is concentration gradient?
Answers
Answer:
The difference in the concentration of a substance between two areas is called the concentration gradient . The bigger the difference, the steeper the concentration gradient and the faster the molecules of a substance will diffuse. The direction of diffusion is said to be 'down' or 'with' the concentration gradient.
Explanation:
the formulas for these two ?
Answers
Answer:
These are called kinematics equations.
Explanation:
These equations are used when there is either a constant velocity motion or a constant acceleration motion.
To overcome an object's inertia, it must be acted upon by __________. A. Gravity B. Energy C. Force D. Acceleration Please select the best answer from the choices provided. A B C D.
Answers
Taking into account the Newton's first Law, the correct answer is option C. To overcome an object's inertia, it must be acted upon by a force.
Newton's First Law, also called the Law of inertia, indicates that "Every body perseveres in its state of rest or of uniform rectilinear motion unless it is forced to change its state by forces impressed on it." This means that for a body to come out of its state of rest or of uniform rectilinear motion, it is necessary for a force to act on it.
In other words, it is not possible for a body to change its initial state (be it rest or motion) unless one or more forces intervene.
Finally, the correct answer is option C. To overcome an object's inertia, it must be acted upon by a force.
Learn more:
https://brainly.com/question/1083492https://brainly.com/question/14113252?referrer=searchResultsAnswer:
C) Force
Explanation:
Can someone please help me with this
Answers
Answer:
i dont know about this
Explanation:
A student, Jim, was drinking from a glass filled with ice water on a hot day.
Jim noticed that water droplets had formed on the outside of the glass and
asked where the water came from. Two other students, Maddy and Theo,
each tried to answer Jim's question.
Maddy's Viewpoint
Air contains some water. The air contains more water on hot days than on
cold days. When the air comes in contact with the cold glass, the water in the
air forms water droplets on the outside of the glass.
Theo's Viewpoint
Air does not contain water. The water droplets on the outside of the glass
must have come from inside the glass. The water can get outside the glass
in one of two ways. One way is that the water can pass through tiny pores in
the glass. Another way is that the water can make its way up the side of the
glass and over the edge Water droplets form on a glass only when the water
in the glass is colder than the outside air. So, the colder the water, the more
likely it will pass through the glass or make its way over the edge of the
glass
Answers
Condensation is the process through which water droplets develop on the outside of the glass containing ice water.
Water vapour in the surrounding air cools down due to the low temperature of the glass, changing it from a gaseous to a liquid form.
The process by which water vapour in the air is transformed into liquid water is known as condensation. This is the opposite of evaporation.
Warm air colliding with cold surfaces can cause condensation. Also, when the air is in an environment with an excessive amount of humidity.
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When you use context clues to understand what a word means, what do you do
A) Think about how the word is pronounced.
B) Look at the parts of that word.
C) Look at the words and phrases around that word.
D) All of the above
Answers
Answer:
C,
Explanation: because when i use context clues, I look at the words in front and in back and it tells me what the word is.
Brainliest pls
Answer: C
Explanation:
Brainlist Please
can anyone pls help?
Answers
Explanation: First use a fab 5 equation using the values given in the question. distance is irrelevant so use an equation without distance
Solve for acceleration.
vi = 3m/s
vf = 7m/s
t = 2s
a = ?
a = vf-vi/t
a = 7-3/2
a = 4 / 2
a = 2m/s^2
Then use Fa = ma (applied force = mass x acceleration) to solve for applied force
Fa = ma
Fa = (5)(2)
Fa = 10N
Therefore the applied force is 10N. Hope this helps!! :)
Longitudinal seismic waves are known as
a primary waves.
b. secondary waves.
surface waves.
d. transverse waves.
Please select the best answer from the choices provided
О А
ОВ
ОС
D
Answers
Answer:
A. primary waves
Explanation:
An object is moving across a surface, but it does not gain or lose speed. Which best describes the object’s force?
The net force is positive.
The net force is zero.
The positive force is greater than the negative force.
The negative force is greater than the positive force.
Answers
The statement best describes the object's force is the net force is zero.
What is Net force?When two or more forces are acting on the system of objects, then the to attain equilibrium, net force must be zero.
An object is moving across a surface, but it does not gain or lose speed. This means that the body is moving with constant velocity. The constant velocity indicates that the acceleration is zero.
Thus, the net force is zero.
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