What are the names of the following Compounds?
1.NACI
2.KCI
3.CUF
4.Fes
5.CA(OHS)
6.CACO
Answers
2. potassium chloride
3. copper monoflouride
4. ferrous sulphide
5. ?
6. calcium carbonate
Related Questions
The work done in moving a block across a rough surface and the heat energy gained by the block can both be measured in ...
Answers
The work done in moving a block across a rough surface and the heat energy gained by the block can both be measured in Joules.
What are Joules?Joules is a unit of measurement used in physics that indicates the force exerted on a particular object.
A Joule is a work when a force that equals one (1) newton moves an object one (1) meter in a given direction.
Joules is the most widely extended unit of force and energy in physics and related disciplines.
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if you are driving 90 km/h along a straight road and you look to the side for 2.8 s , how far do you travel during this inattentive period?
Answers
During this interval of inattention, you go around 252 metres.
Determine the speed in metres per second.
Speed in km/h = 90 km/h
1 km/h = 1000/3600 m/s
Speed in m/s = 90 x 1000/3600 = 25 m/s
Determine the time in seconds.
Time = 2.8 s
Figure out the distance.
Distance = Speed x Time
Distance = 25 m/s x 2.8 s
Distance = 70 m
Do the conversion from feet to kilometres.
1 km = 1000 m
Distance in km = 70/1000 = 0.07 km
Determine the distance in metres.
1 km = 1000 m
Distance in m = 0.07 x 1000 = 70 m
Determine the total distance that was covered during the inattentive period.
Total Distance = Distance traveled before inattention + Distance traveled during inattention
Total Distance = 90 x 2.8 + 70
Total Distance = 252 m
Throughout this period of inattention, you move around 252 metres.
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Holden is trying to determine the velocity of his race car. He went 20 meters east, turned around, and went 40 meters west. He turned the car one more time and went 35 meters east. His car was 15 meters from the starting line. This took 5 seconds.
What is the car’s velocity?
Answers
Answer:
3 m/s east
Explanation:
I took a test a got it right
Answer:
3 m/s east
Explanation:
Which of the following is a vector quantity?
A.20mph. B.30mph northwest. C.55 m/s. D.30milles
Answers
Answer:
B. 30 m/h NorthwestExplanation:
Vector quantities are those quantities which needs both magnitude and direction for their description.
Here, in all the options except option B, there is no direction. This means, other options are scalar quantities and option B is only vector quantity.
30 m/h Northwest = Velocity20mph, 55m/s and 30 miles are speed. More!Physical Quantities : These are the quantities of the physics which can me measured.
There are two types of physical quantities,
Vector quantityScalar quantityVector quantities are those quantities which needs both magnitude and direction for their description. Example : Velocity, acceleration etc.
Scalar quantities are those quantities which needs only magnitude for their description. Example : Speed , distance etc.
why were the fastest climbers not necessarily the ones who developed the most power
Answers
The fastest climbers are not necessarily the ones who developed the most power because power is not determined by the speed of an object.
When we talk mathematically the power in an object is defined as the work done by the body per unit time.
The fastest climber necessary for the ones who developed the most power because a greater velocity or a greater speed is not a parameter for calculating the power in an object or in our body.
The power is only calculated on the basis of the work done by a climber.
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a wooden box is sitting on a table. the normal force on the box from the table is 75 n. a second identical box is placed on top of the first box. the normal force on the first box by the table will
Answers
The normal force on the first box from the table will stay at 75 N even after a second box is placed on top of it.
The normal force is a contact force that is determined by the weight of the object, as well as the interaction between the two surfaces in contact. The regular force that the table normally applies to the first box will stay unchanged because the weight of the box has not changed.
The normal force, which is equivalent in strength to gravity's force and acts in the opposite direction, is a force that is perpendicular to the surface of contact. The box is prevented from dropping through the table's surface by this reactionary force.
In other words, the normal force is equivalent to the object's weight, which in this instance is 75 N.
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Question 55
Marks: 1
Long term effects of radiation on an individual are predictable.
Choose one answer.
a. True
b. False
Answers
False. While there are known long-term effects of radiation exposure, the specific effects on an individual can vary depending on factors such as the type and amount of radiation exposure, age, health status, and genetics.
Some known long-term effects of radiation exposure include an increased risk of cancer, genetic mutations, and damage to organs such as the thyroid and reproductive organs. However, the severity and timing of these effects can vary widely among individuals. Additionally, exposure to radiation can also have immediate effects such as skin burns and radiation sickness. It is important to note that the long-term effects of radiation exposure can be reduced through measures such as limiting exposure time, using protective equipment, and following proper safety protocols.
b. False
Long-term effects of radiation on an individual are not entirely predictable. While it is true that exposure to high levels of radiation can lead to an increased risk of certain health issues such as cancer and genetic mutations, the specific outcome for an individual depends on various factors. These factors include the type and amount of radiation, duration of exposure, age, and individual genetic makeup. Additionally, the latent period between radiation exposure and the onset of health issues can vary significantly, making it challenging to predict the exact long-term effects for a particular individual.
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Someone please help I’m so confused
Answers
Explanation:
the switch and the battery
How can gas density be used to explain why hydrogen rises in air and carbon dioxide sinks?
Answers
Answer:
Explanation: The density of gas differentiates all the varieties of gas present in the atmosphere.
HYDROGEN- it is a lighter gas having a lesser density.
For example, a hydrogen balloon displaces the air around it thus making it rise.
CARBON DIOXIDE: It is a denser gas as it makes the balloon heavier than the air pressure around it thus making it sink.
I hope the explanation was helpful. :)
The speed of a sound wave in air is 340 metres per second. The speed of a sound wave in solid concrete is 2950 metres per second
Use ideas about particles to suggest reasons for the difference in speed?
pls help
Answers
Because solid concrete is stiffer, denser, and typically warmer than air, the speed of sound in solid concrete is faster than in air.
The speed of sound waves in air has been measured to be 340 m s.The sound wave moves at a 340 m/s pace. D = v • t can be used to calculate the distance, giving a value of 25.5 m. Since 0.150 seconds is the round-trip distance, use 0.075 seconds for the time.
Is 340 metres per second the speed of sound in air?The speed at which a sound source needs move in the direction of a stationary observer in order to double the apparent frequency. 640 m s - 1.
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What happens to the speed of
sound in water at 20° C vs water a
0° C?
Answers
Answer:
The speed of sound in water would approximately be 1500m/s
Explanation:
What value of resistor R gives the circuit in the figure a time constant of 22 μs ?
Answers
The value of resistor R that gives the circuit in the figure a time constant of 22 μs is 220 Ω.
The circuit that is in the figure is shown below:Given that time constant (RC) = 22 μs. To find the value of resistor R, we need to use the formula for the time constant:
RC = τ, where R is the resistance and C is the capacitance of the circuit.
Rearranging the above formula, we get:R = τ / C
Where τ is the time constant and C is the capacitance of the circuit.
From the figure, the capacitance is given as 0.1 μF
.Substituting the values of τ and C in the above formula, we get:
R = (22 × 10⁻⁶ s) / (0.1 × 10⁻⁶ F)
R = 220 Ω
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Force can be calculated as
Answers
A 250-n force is directed horizontally as shown to push a 29-kg box up an inclined plane at a constant speed. Determine the magnitude of the normal force
Answers
Answer:
246.38N
Explanation:
Check the complete question in the attached diagram
The normal force acting on the body on an inclined is equal to the weight of the object as shown;
Weight = Normal force = mgcosθ
m is the mass of the box = 29kg
g is the acceleration due to gravity = 9.81m/s²
θ is the angle of inclination = 30°
N = 29 * 9.81 * cos 30°
N = 284.49cos30°
N = 246.38N
Hence the magnitude of the normal force is 246.38N
Una caloría (cal) es la cantidad de transferencia de energía necesaria para elevar la temperatura de 1 g de agua de 14,5 °C a 15,5 °C.
Answers
Answer:
Verdadera.
Explanation:
La caloría se puede definir como una unidad estándar utilizada para medir la cantidad de energía presente en un organismo vivo.
Una caloría (cal) es la cantidad de transferencia de energía necesaria para elevar la temperatura de 1 g de agua de 14,5 °C a 15,5 °C.
Generalmente, es una unidad de medida de energía e igual a 4,1855 julios.
Question 19 D
An electron is accelerated in an electric field through a potential difference of +2400 V. Which of the following justifies why the change in kinetic energy can be calculated using AU = QAV?
А
The electric field exerts a force on the electron that is proportional to the electron's charge
B
The change in potential energy of the field electron system is equal to the change in kinetic energy of the particle
с
The work done on the particle by the field is equal to the electric force times the distance the electron moves.
D
Changes in potential and kinetic energies are always equal.
Answers
Option B is the correct option.
The change in kinetic energy can be calculated using ΔU = QΔV because the change in potential energy of the field electron system is equal to the change in kinetic energy of the particle.
What is the law of conservation of energy?
The law of conservation of energy states that energy can neither be created nor destroyed but can be transformed from one form to another.
According to this law of conservation energy, the potential energy of a substance can be converted into kinetic energy of the substance.
Mathematically, the relation between change in kinetic energy and change in potential energy is given as;
ΔU = ΔK.E
where;
ΔU is change in potential energyΔK.E is change in kinetic energyFor an electron accelerated in an electric field through a potential difference of +2400 V, the change in potential energy is given as;
ΔU = QΔV
where;
ΔU is change in potential energyQ is the charge of the electronV is the potential differenceThus, the change in kinetic energy of the electron can be calculated due to law of conservation of energy.
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A major part of the electrical energy supplied to an incandescent lamp is lost as
heat.
a) Which material is used as filament? 1
b) Write any two properties of this material? 2
c) Why is the bulb is evacuated?
Answers
Tungsten is the most common material used as filament in incandescent lamps.
b) Tungsten has a high melting point (approximately 3422 °C) and a high resistance to thermal shock.
c) The bulb is evacuated in order to reduce heat loss by conduction and convection, and to prevent the filament from oxidizing in the presence of air. The vacuum also allows the filament to operate at a higher temperature, which leads to a higher efficiency of the lamp.
What is the electrical energy?Tungsten is a highly durable and heat-resistant metal, making it an ideal material for the filament in incandescent lamps. The filament is the thin wire inside the bulb that heats up and glows to produce light.
The high melting point of tungsten (approximately 3422 °C) allows the filament to withstand the high temperatures required to produce light, and its resistance to thermal shock means it can withstand changes in temperature without breaking or deforming.
Therefore, bulb of an incandescent lamp is evacuated to reduce heat loss by conduction and convection. Conduction is the transfer of heat through a solid object, such as the filament, while convection is the transfer of heat through a fluid or gas, such as the air inside the bulb. By evacuating the bulb, there is no air present to transfer heat away from the filament, which allows the filament to operate at a higher temperature and produce more light.
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Colle's fracture occurs when the radial styloid process breaks as a skateboarder hits the concrete with outstretched arms to stop their fall. True False
Answers
Colle's fracture is an injury that occurs when a person falls and lands on an outstretched hand. The fracture affects the radius, one of the bones that makes up the forearm. The radial styloid process is the end of the radius bone closest to the thumb. It helps to keep the wrist stable when the hand moves.
This fracture is also known as a distal radius fracture or wrist fracture.A skateboarder, who hits the concrete with outstretched arms to stop their fall can break the radial styloid process resulting in Colle's fracture. Therefore, the given statement is true. Here is a detailed explanation for the same:Colles' fracture is a type of wrist fracture. It occurs when the bone that connects the wrist to the thumb (the radius) breaks and moves toward the back of the wrist. Colles' fracture usually occurs when a person falls and lands on an outstretched hand. It is also common in older adults with osteoporosis, a condition that weakens the bones. In the case of a skateboarder, who hits the concrete with outstretched arms to stop their fall can break the radial styloid process. This will result in a Colle's fracture. In addition, Colles' fracture may be classified as:Extra-articular, which means the fracture does not extend into the wrist joint. This type of fracture is more common.Intra-articular, which means the fracture extends into the wrist joint. This type of fracture is less common but is more severe.
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acar is traveling at 30 m/s and applies its brakes to slow down to 10 m/s. if it is able to decelerate at 5 m/s2, how far does it travel during the braking period?
Answers
The car is travelling at 30 m/s and is trying to slow down to 10 m/s. To calculate the distance traveled during the braking period, we need to use the formula for average acceleration,
d = (vf2-vi2)/2a,
where vf is the final velocity, vi is the initial velocity, and a is the acceleration.
Since the car is trying to slow down, the initial velocity is 30 m/s and the final velocity is 10 m/s. The acceleration is -5 m/s2 (since it is decelerating). Using the formula, we can calculate the distance as d = (102 - 302)/2(-5) = -700 m. The car travels 700 m during the braking period.
We can also calculate the time taken for the car to slow down. Since acceleration is constant, we can use the formula
t = (vf - vi) / a,
where t is the time. Substituting the values, we get
t = (10 - 30) / -5 = 4s.
Therefore, it takes 4 seconds for the car to slow down from 30 m/s to 10 m/s.
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A car is driven for 1.00 h with a velocity of 100 km/h towards the south, then for 0.50 h with a velocity of 50 km/h towards the north, and finally for 0.75 h with a velocity of 80 km/h towards the south. Find the car’s average velocity.
Answers
Answer:
Average velocity = 82.22 km/h
Explanation:
Average Velocity = (Total distance)/(Total time)
When the car was first driven for 1 h with a velocity of 100 km/h towards the south
Velocity = Distance/time
Distance = Velocity * time
Distance covered, D1 = 100 * 1 = 100 km
When the car was driven for 0.50 h with a velocity of 50 km/h towards the north
Distance = Velocity * time
Distance covered, D2 = 50 * 0.5 = 25 km
When the car was driven for 0.75 h with a velocity of 80 km/h towards the south
Distance = Velocity * time
Distance covered, D3 = 80 * 0.75 = 60 km
Total distance traveled = D1 + D2 + D3
Total distance traveled = 100 + 25 + 60
Total distance traveled = 185 km
Total time taken = 1 + 0.5 + 0.75
Total time taken = 2.25 h
Average velocity = Total distance/ total time
Average velocity = 185/2.25
Average velocity = 82.22 km/h
100 POINTS! Arches, Quintuplet, and GC are examples of names that astronomers have given to:
A: extinct asteroids.
B: galactic dust balls.
C. Supermassive black holes.
D: live massive star clusters
Answers
Arches, Quintuplet, and GC are not names given to extinct asteroids, galactic dust balls, or supermassive black holes. Instead, they are examples of names given to live massive star clusters. The correct option is D
Astronomers have identified these star clusters in various regions of our galaxy. The Arches cluster is located near the center of the Milky Way, while the Quintuplet cluster is found in the same vicinity.
These clusters are comprised of young, massive stars that emit intense radiation and are surrounded by dense clouds of gas and dust.
GC stands for "globular cluster," and it refers to a densely packed spherical collection of stars found in the galactic halo.
These star clusters are fascinating subjects of study for astronomers, as they provide insights into the formation and evolution of stars in our galaxy.
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What must be true about two objects for conduction to take place? The objects must be different temperatures and they must be in contact. The objects must be the same temperature and they must be in contact. The objects must be different temperatures and they must be insulators. The objects must be the same temperature and they must be insulators.
Answers
Answer:
A.The objects must be different temperatures and they must be in contact.
Explanation:
A 75,000-watt radio station transmits at 88 MHz. Determine the number of joules transmitted per second. 88 J/s 8800 J/s 2,000,000 J/s 75,000 J/s
Answers
Answer:
the first one is the correct answer
Which of the following best explains why energy transfers are never 100%
efficient?
A. Some energy is always converted to unusable forms in the
process.
B. Some energy is always destroyed in the process.
C. Entropy always decreases in an energy transfer.
D. Energy is always conserved in an energy transfer.
Answers
Answer:
A. Some energy is always converted to unusable forms in the
Explanation:
The second law relates to the quality of energy. This law states that whenever energy is transformed, some of must be degraded into a less useful form. In ecosystems, the biggest losses occur as respiration.
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A loudspeaker on a tall pole broadcasts sound waves equally in all directions. What is the speaker's power output if the sound intensity level is 108 dB at a distance of 17m?
Answers
So the speaker's power output is approximately 2773.99 watts.
The power output of a speaker can be calculated from the sound intensity level and distance using the equation:
P = 10^(I/10) / (4 * pi * d^2)
where P is the power output in watts, I is the sound intensity level in dB, and d is the distance in meters. Substituting the given values, we get:
P = 10^(108/10) / (4 * pi * 17^2)
P = 10^10.8 / (4 * pi * 289)
P = 3162277.7 / (4 * pi * 289)
P = 3162277.7 / 1140
P = 2773.99 W
A motor's output power is calculated by multiplying its torque output by the angular velocity of its output shaft. The power lost by an electrical component in a circuit is also a function of the voltage across the component and the current that flows through it.
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According to the metric system, 1 ________ = 1,000,000 g.
Answers
According to the metric system, 1 metric ton (also known as a tonne) = 1,000,000 grams. In the United States and some other countries, a ton is often used to refer to a unit of weight.
The metric system is a system of measurement used in most of the world that is based on the International System of Units (SI). The SI unit for mass is the kilogram (kg), which is defined as the mass of a specific cylinder of platinum-iridium alloy kept at the International Bureau of Weights and Measures in France.
The metric ton, also known as the tonne, is a unit of bin the metric system that is equal to 1,000 kilograms. This unit is commonly used to measure large masses of objects such as vehicles, cargo, and building materials.
Since 1 kilogram is equal to 1,000 grams, 1 metric ton is equal to 1,000 x 1,000 = 1,000,000 grams. This means that if you have a mass of 1,000,000 grams, you have a mass of 1 metric ton. Similarly, if you have a mass of 2,000,000 grams, you have a mass of 2 metric tons, and so on.
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A jet traveling at 1500 km/h passes overhead. The sonic boom produced is heard by
a. a listener on the ground.
b. the jet pilot.
c. both of these
d. neither of these
Answers
The answer to the question is:
a. a listener on the ground
Explanation:
When a jet travels through the air, it produces sound waves that travel through the air and create sound waves in the surrounding atmosphere. These sound waves are called sonic booms. As a jet travels through the air, it produces sound waves that travel through the air and create sound waves in the surrounding atmosphere.
When the jet travels at or above the speed of sound, it creates a loud, thunderous boom that can be heard on the ground. This is because the sound waves created by the jet are traveling faster than the speed of sound, creating a sonic boom that travels through the air and can be heard by a listener on the ground.
So, the correct option is a listener on the ground.
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You make yourself and your friend a cup of hot chocolate and add vanilla ice cream. You quickly enjoy yours, but your friend takes a long time to come, so you get to observe theirs as a science experiment.
In what direction does the heat flow? (2 points)
Describe how the kinetic energy of the hot chocolate changes once you add the ice cream. (2 points)
How does the kinetic energy of the ice cream change once you put it in the hot chocolate? (2 points)
What happens to the temperature of each substance? Be specific. (2 points)
When will the temperature of the ice cream and the hot chocolate stop changing? (2 points)
Answers
1) The heat would flow from the hot chocolate to the ice cream.
2) The chocolate is going to decrease in its kinetic energy.
3) The ice cream would increase in its kinetic energy
4) The temperature of the hot chocolate would decrease while the temperature of the ice cream would increase
5) The temperature of the ice cream and the hot chocolate would stop changing when thermal equilibrium is attained.
What is the kinetic energy?Let us take our minds back to the kinetic theory of matter. We know that according to the kinetic theory matter, matter is composed of small particles that are in constant motion. We also define the temperature of the body as a measure of the average kinetic energy of the molecules of the body.
In this case, we can see that the chocolate is at a higher temperature thus its particles have a higher kinetic energy and the kinetic energy would flow from the hot chocolate to the cold ice cream. The kinetic energy of the ice cream would increase once it comes into contact with the hot chocolate.
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Why are speeding tickets not the best punisher for reducing speeding behavior?
Because they are not given out every time one speeds
Because they are not expensive enough to be an intense punishen
Because not everyone perceives tickets as bad
Because they are a positive punisher rather than a negative punisher
Answers
Speeding tickets are not the best punisher for reducing speeding behavior because not everyone perceives tickets as bad .So option C is correct.
Here are some other reasons why speeding tickets may not be the best punisher for reducing speeding behavior:
They are not always given out. Police officers may not always be able to stop and ticket every driver who is speeding. They are not always expensive enough. The cost of a speeding ticket may not be enough to deter some drivers from speeding. They may not be immediate. The time between speeding and receiving a ticket may be long enough for the driver to forget about the speeding and continue to speed.Other methods of reducing speeding behavior, such as increased enforcement and public education, may be more effective than speeding tickets.To learn more about enforcement visit: https://brainly.com/question/28831464
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Which of the following are correct units for a drinking water equivalent level? a. No units b. mg/m³ c. mg d. mg/kg/day e. mg/L
Answers
Drinking Water Equivalent Level (DWEL) is defined as the maximum permissible amount of a contaminant in drinking water, which may be safely ingested by an adult person during a day (assuming a bodyweight of 70 kg) over an extended period of time without any adverse effect on health.
The correct units for a Drinking Water Equivalent Level (DWEL) are mg/L (milligrams per liter). Therefore, the correct answer is option (e) mg/L.What is Drinking Water Equivalent Level? Drinking Water Equivalent Level (DWEL) is defined as the maximum permissible amount of a contaminant in drinking water, which may be safely ingested by an adult person during a day (assuming a bodyweight of 70 kg) over an extended period of time without any adverse effect on health.
The DWEL of a contaminant is generally estimated based on its reference dose (RfD) and the amount of water consumed by an individual in a day (assumed to be 2 L/day).Reference dose (RfD) is defined as the daily oral exposure (mg/kg/day) to a chemical that is assumed to be without appreciable risk of deleterious effects over a lifetime. RfD values are derived from the lowest observed effect levels in animal studies and uncertainty factors are used to account for the differences in sensitivity between animal species and humans, and to address any gaps in the available data regarding the toxicity of the substance.
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