Answers
Answer:
Current cannot flow through a circuit when the switch is OPENCurrent flows through a circuit and all of the bulbs are lit only when the Switch is CLOSEExplanation:
In a series connected electrical circuit as also seen in all electrical Circuit the switch allows the flow of Electricity through out the circuit therefore causing the lighting of bulbs and also other electrical appliances to receive electricity.
When the switch is Open the flow of electricity in the circuit is disrupted while when the Switch is closed it allows the flow of electricity seamlessly through out the circuit. there are different types of switches but the most important is the MAIN SWITCH because it is used to shutoff electricity completely from the entire circuit during emergencies or repairs.
Answer:
Current cannot flow through a circuit when the switch is OPEN
Current flows through a circuit and all of the bulbs are lit only when the switch is CLOSED
Explanation:
Related Questions
When a nucleus emits an alpha particle, the mass number of the nucleus ____________. (2 points)
a
decreases
b
increases
c
remains the same
d
doubles
Answers
Answer:
When a nucleus emits an alpha particle, the mass number of the nucleus A. decreases!!!
Explanation:
An atom releases a Alpha particle, its atomic number decreases by two and its mass number decreases by 4.
Fluorine (F) is a nonmetal. It has a strong tendency to complete its outermost shell of electrons and form an ion. How will F form its ion?
A It will gain one electron and form F-.
B It will gain two electrons and form F2-.
C It will lose one electron and form F+.
D It will lose two electrons and form F2+.
Answers
Answer:
I think D?
Explanation:
what is a everyday activities examples of newtons 1 law of motion
Answers
Answer:
bouncing a baskletball
Explanation:
Answer:someone kicking a soccer ball.
Explanation:
Because the ball isn’t in motion until acted on by another object (the foot)
above
3. DIRECTIONS: Read the following two statements carefully and choose the correct options.
Statement 1: In a room containing air, heat can go from one place to another by radiation only.
Statement 2: In convection, heat is transferred from one place to other by actual motion of the
molecules in the heated material.
A) Statement (1) is correct while statement (2) is incorrect.
B) Statement (2) is correct while statement (1) is incorrect.
C) Both statements are correct
D) Both statements are incorrect.
Answers
A manufacturing company has a machine that can hold a maximum volume of 300 cm3 of liquid silver. This volume of liquid silver has a mass of approximately 2.8 kg. The company has a second machine that can only hold a maximum volume of 150 cm3 of liquid silver. What is the approximate mass of liquid silver that the second machine can hold?
Answers
Approximately 1.4 kg mass of liquid silver that the second machine can hold.
What is the approximate mass of liquid silver that the second machine can hold?The approximate mass of liquid silver that the second machine can hold is approximately 1.4 kg. To calculate this mass, one must understand the relationship between volume and mass, as the volume of a material can directly affect its mass.In this case, the first machine can hold a maximum volume of 300 cm3 of liquid silver, which has a mass of 2.8 kg. To calculate the mass of the second machine, one must divide the mass of the first machine by the volume of the first machine, and then multiply that number by the volume of the second machine.This equation looks like this: (2.8 kg/300 cm3) x 150 cm3 = 1.4 kg. Therefore, the approximate mass of liquid silver that the second machine can hold is approximately 1.4 kg. By understanding the relationship between volume and mass, one can accurately calculate the mass of a material that a machine can hold. In this case, the mass of the liquid silver that the second machine can hold can be calculated to be approximately 1.4 kg.This calculation can be useful for manufacturing companies, as it can help them to determine the amount of material their machines can hold in order to avoid any potential production issues.To learn more about The approximate mass of liquid silver refer to:
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defenition of takes place in body cells
Answers
Answer:
the nucleus-containing central part of a neuron exclusive of its axons and dendrites that is the major structural element of the gray matter of the brain and spinal cord, the ganglia, and the retina. — called also perikaryon, soma.
Answer:
Your body cells use the oxygen you breathe to get energy from the food you eat. This process is called cellular respiration. During cellular respiration the cell uses oxygen to break down sugar. The opposite takes place in the cells where the blood releases oxygen and picks up carbon dioxide.
what is the formula of magnetic force
Answers
Answer:
F = qvB sinθ
(Hope this helps! Btw, I am the first to answer. Brainliest pls! :D)
At a temperature of 300 K, the pressure of the gas in a deodorant can is 3 atm.
Calculate the pressure of the gas when it is heated to 900 K.
Answers
The pressure of the gas in the deodorant can when it is heated to 900 K is 9 atm.
What is the pressure of the gas when it is heated to 900 Kelvin?Gay-Lussac's law states that the pressure exerted by a given quantity of gas varies directly with the absolute temperature of the gas.
It is expressed as;
P₁/T₁ = P₂/T₂
From the data:
Initial pressure P₁ = 3 atmInitial temperature T₁ = 300 KFinal pressure P₂ = ?Initial temperature T₂ = 900 KWe substitute our values into the expression above and solve for final pressure.
P₁/T₁ = P₂/T₂
P₁T₂ = P₂T₁
P₂ = P₁T₂ / T₁
P₂ = ( 3 atm × 900 K ) / 300 K
P₂ = 9.0 atm
Therefore, the final pressure is 9.0 atm.
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How is fitness walking beneficial?
It can relieve stress and improve mood.
It can decrease energy levels.
It can decrease perspiration.
It can relieve allergy symptoms.
Answers
Answer:
It can relieve stress and improve mood.
In a Venn diagram, the separate circles contain characteristics unique to each compared and the intersection contains characteristics that are common to both items being compared. This Venn diagram compares the inner and outer planets. What belongs in the center section?
a. -Revolve around the Sun
-Rotate on an axis
-Generally have rings
b. -Revolve around the Sun
-Rotate on axis
-Generally have moons
c. -Rotate around the Sun
-Revolve on an axis
-Generally have moons
d. -Rotate around the Sun
-Revolve on an axis
-Generally have rings
Answers
Answer:
B. revolve around the sun
rotate on an axis
generally have moons
Explanation:
edge 2021
which phase change involves an in crease in the attractive force between molecules
Answers
Answer:
condensation
Explanation:
Condensation is the phase change involves an in crease in the attractive force between molecules.
Four model rockets are launched in a field. The mass of each rocket and the net force acting on it when it launches are given in the table below. (1. 4.25kg 120N) (2. 3.25kg 120N) (3. 5.50kg 120N) (4. 4.50kg 120N), Which rocket has the lowest acceleration?
Answers
The correct answer is option 3 i.e., 5.50 Kg and 120 N had lowest acceleration among all options given.
What connection exists between force and mass of acceleration?
Mass times acceleration, or F=m x a, equals force. This means that in order to move an object at the same speed as an object with smaller mass, a stronger force is required. Newton's Second Law of Motion is this.
Acceleration = Force / Mass
Given, as per question in all the 4 options Force = 120 N same for all
So as per formula if we assume Force is constant
Then, if mass is increased then acceleration will be lowest as both are inversely proportional.
1. Acceleration= 120 / 4.25 = 28.23 m/s²
2. Acceleration= 120 / 3.25 = 34.28 m/s²
3. Acceleration= 120 / 5.50 = 21.81 m/s²
4. Acceleration= 120 / 4.50 = 26.66 m/s²
Hence answer is option number 3.
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Based on The MOHS hardness Scale, which mineral could be scratched by a penny but not by a fingernail
A. Fluorite
B. Calcite
C. Gypsum
D. Talc
Answers
The correct answer is B. Calcite
Explanation:
Mohs hardness scale indicates the hardness of minerals using a scale from 1 to 10 as well as defining the objects or tools that can be used to scratch the minerals. These two features of minerals are shown in the table of the image. About this, it is shown gypsum and talc can be scratched by just a fingernail, considering minerals with a hardness of 2.5 or below can be scratched by a fingernail. In the case of calcite that has a hardness of 3, this cannot be scratched by a fingernail, but it can be scratched by a penny, which works for minerals with a hardness of 3.5 or below. Thus, the correct answer is Calcite.
A basketball player throws a ball horizontally toward another player 10 meters away. If the ball is
traveling at a speed of 20 m/s, neglecting air friction, how long does it take for the ball to get to the
other player?
Thank you!!!
Answers
Answer:
It will take 0.46 seconds to reach home plate by ball.
Explanation:
One day in science class Tara notices a lava
lamp in the back corner. The teacher plugs it in and after some time they notices the
"lava"moving up and down. Using your
knowledge of density explain why the "lava"
behaved in this manner.
Answers
Answer:
the lava is and burning like liquid that is from a volcano when it erupt lava
State three examples where undesirable on a
machine
Answers
In the field of machinery, various problems and challenges may arise during the operation of a machine. Three examples of undesirable conditions on a machine are overheating, excessive vibrations, and noise.
Overheating: When a machine is continuously working, it generates heat due to the resistance caused by the parts involved. However, if the machine becomes too hot, it may lead to severe damage to the machinery or the operators working with the machine. Overheating may occur due to several reasons such as lack of lubrication, excessive friction, or improper functioning of cooling systems.
Excessive vibrations: If a machine vibrates too much, it may cause the machine to loosen and break apart. Moreover, excessive vibrations can cause discomfort to the operator working with the machinery. Excessive vibration may arise due to improper balance, lack of maintenance, or wear and tear of the machine parts.
Noise: Machines produce sounds during their operations, but if the sound is too loud and continuous, it may cause damage to the operator's eardrums or cause distraction to people working around the machine. Noise pollution may occur due to unbalanced machine parts, lack of lubrication, and improper functioning of the machine's internal systems.These undesirable conditions on a machine need to be addressed to avoid severe damage to the machine or harm to operators working with the machinery. Regular maintenance, lubrication, and inspection of the machinery can minimize or eliminate the chances of these undesirable conditions on the machine.
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Which of the following statements about treatment for self-injury (SI) is not true?
Answers
Answer:
Its true
Explanation:
A wave has a frequency of 30Hz and wave length of 40cm. What is the velocity of the wave?
Answers
Answer:
12m/s
Explanation:
v=fλ
30×(40÷100)=
12m/s
A 750 kg race car accelerates to the right. The engine applies a force of
+7000 N to the car. The total friction on the car in the opposite
direction is -200 N.
Find the net force on the car then use 'Fnet = m a' to find the
acceleration.
O a
b
Oc
Od
12.4 m/s2
10.5 m/s2
8.0 m/s2
9.1 m/s2
Answers
Answer: Option D, 9.1 m/s^2
Sulfur difluoride consists of a central sulfur atom and a fluorine atom on each side. Draw a model of the molecule formed by putting lines between the atoms to represent bonds so that each atom has the correct number of bonds.
Answers
Answer:
F - S - F
Explanation:
Answer:
F-S-F
Explanation:
PLATO ANSWER
Which of these surfaces would have the least amount of friction?
grass
sand paper
concrete
satin cloth
Answers
Answer:
D. Satin Cloth
Explanation:
i thought it said glass, not grass lol
satin it the smoothest surface and therefore the least amount of friction.
Which part of the diagram indicates the amplitude of the wave?
Answers
The left vertical line part of the diagram indicates the amplitude of the wave.
The amplitude of a wave or vibrating body is defined as the maximum displacement or distance generated by a point on the wave or body compared to its position of equilibrium. It is the same as the length of the vibration path divided by half.
The wave's amplitude is shown by the left vertical line in the figure, which depicts the highest displacement or distance that a spot on a wave or moving body can make compared to its equilibrium position. So the left vertical line part of the diagram indicates the amplitude of the wave.
The figure of the question is attached.
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Help please, thank you.
Answers
Answer:
a. skin and mucous membranes
hope this helps you
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itz Indian heart
Which law of thermodynamics does each of the following scenarios violate (if any)?
A machine that can turn 1000J of heat directly into 1000J of electricity
1.
The first law of thermodynamics
2.
The second law of thermodynamics
3.
The third law of thermodynamics
4.
It is allowed
Answers
Answer: The scenario violates the second law of thermodynamics.
Explanation: The second law states that heat cannot be converted into work without some loss of usable energy, and that the amount of usable energy in a closed system will always decrease over time. Therefore, the machine described in the scenario cannot exist because it would violate the second law by converting all of the heat into electricity without any loss of usable energy.
A 2 m long wire carrying 2 A of current pointing to the right is placed in a magnetic field of 4 T directed away from you. Which direction does the force on the wire point?
A. Down
B. Up
C. Left
D. Right
Answers
Explanation:
To determine the direction of the force on the wire, we can use the right-hand rule for the cross product of two vectors. The force on the wire is given by:F = I * L x Bwhere I is the current, L is the length of the wire, and B is the magnetic field.
If we point our right-hand thumb in the direction of the current (to the right), and our fingers in the direction of the magnetic field (away from us), then our palm will point in the direction of the force.
So, using the right-hand rule, we can see that the force on the wire will be directed downward. Therefore, the correct answer is A. Down.Explain the light detection technique of photovoltaic detection
Answers
Answer:
Photovoltaic detection is a technique that converts light into electrical energy. It is a process that involves the use of a photovoltaic cell, which is made up of semiconductor materials, to generate an electric current when exposed to light.
The photovoltaic cell absorbs the photons of light, which then knock electrons out of their orbits, creating a flow of electricity. The amount of electricity produced is proportional to the intensity of the light. The photovoltaic cell is commonly used in solar panels to generate electricity from sunlight. The efficiency of the photovoltaic cell is dependent on several factors, including the type of semiconductor material used, the purity of the material, and the thickness of the cell.
The photovoltaic cell has many applications, including in solar power generation, telecommunications, and remote sensing. The technique of photovoltaic detection is an important area of research, as it has the potential to provide a clean and renewable source of energy that can help mitigate climate change.
Learn more about Photovoltaic detection
A force of 40 N accelerates a 5 block at 6 m/s ^ 2 along a horizontal surface a. What would the block's acceleration be if the surface were frictionless. b. How large is the kinetic friction force? cWhat is the coefficient of kinetic friction?
Answers
Answer:
a = 8 m/s^2, Ffriction = 10 N, μk = 0.205
Explanation:
a. Force = Mass*Acceleration,
(since you didn't add the units..."5 block"....for the mass, I will assume it to be in kg, per SI units)
40 N = 5 kg*acceleration,
a = 40/5 = 8 m/s^2
b. As you know newtons second law (F=m*a) is actually in the form Fnet = m*a. Which means that if the friction force comes into play, it would be Fapplied - Ffriction = m*a.
Fapplied - Ffriction = m*a,
40 - Ffriction = 5*6,
40 - Ffriction = 30,
Ffriction = 40 - 30 = 10 N
c. The coefficient of kinetic friction is calculated by the formula "Ffriction = μk*Fnormal".
10 = μk*Fnormal (Fnormal = m*g = 5*9.8)
10 = μk*49,
μk=10/49 ≈ 0.205
7. It has been suggested that rotating cylinders about 20 km in length and 8 km in diameter be placed in space and used as colonies. The purpose of the rotation is to simulate gravity for the inhabitants. Explain this concept for producing an effective imitation of gravity.
Answers
The concept of the centrifugal force is used for producing an effective imitation of gravity. It is an important concept in the mechanics.
What is centrifugal force?when any body is executing circular motion about a fixed axis, an outward force act on that object to balance the body and to execute the circular motion. The outward force is known as the centrifugal force.
It is the pseudo force act in order to balance the centripetal force acting inward during the circular motion.
The centrifugal force is comes into the picture when any body executes circular motion about a fixed axis.
To simulate gravity for the inhabitants, the concept of the centrifugal force is used.
Hence, the concept of the centrifugal force is used for producing an effective imitation of gravity.
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true/false. if the earth somehow got 3 times more mass than it has now, but stayed the same size, our weight would increase by a factor of 9.
Answers
F=GmMr2=kM, where G is your weight and m is the primordial mass of the earth. Where k=Gmr2 k = G m r 2, F = G m M r 2 Equals k M.
Has the mass of the Earth remained constant?Did you realize that the weight of the planet Earth is decreasing daily? In spite of the 40,000 tons of space dust that reach the surface of our planet every year, it is really becoming 50,000 tonnes lighter.
Does the planet's weight increase or decrease?The University of Guelph's Joanna O'Meara, a lecturer and associate head in the faculty of physics, argues why meteor showers actually cause the Earth to grow heavier. According to her, space dust, which includes meteor and asteroid debris, adds around 40,000 tonnes of weight to the earth each year.
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c = speed of light = 3.00 × 108 m/s
A gamma ray has a very high frequency of about 1019 s−1. What is the wavelength of the gamma ray?
A.
3.00 × 10−11 m
B.
3.00 × 1027 m
C.
3.33 × 1010 m
D.
3.33 × 10−12 m
URGENT!!!!!!!!!!
Answers
Answer:
The correct answer is option A: 3.00 × 10^(-11) m.
Explanation:
To find the wavelength of a gamma ray with a frequency of about 10^19 s^(-1), we can use the equation:
wavelength = speed of light / frequency
Given:
Speed of light (c) = 3.00 × 10^8 m/s
Frequency (f) = 10^19 s^(-1)
Substituting the values into the equation:
wavelength = (3.00 × 10^8 m/s) / (10^19 s^(-1))
To simplify the expression, we can rewrite the denominator as (1 / 10^(-19)) s:
wavelength = (3.00 × 10^8 m/s) / (1 / 10^(-19)) s
To divide by a fraction, we multiply by its reciprocal:
wavelength = (3.00 × 10^8 m/s) × (10^(-19) s)
Applying the properties of exponents, we can add the exponents when multiplying with the same base:
wavelength = 3.00 × 10^(-11) m
Therefore, the wavelength of the gamma ray is approximately 3.00 × 10^(-11) m.