A student is building a model of a parallel circuit consisting of a battery, a switch, five light bulbs, and wires. When she connects all of the
components of her model, none of the bulbs light up. Which of the following could be the problem with her model? (AKS 10b / DOK 2)
1
2
3
4
One of the bulbs is burnt
out
One or more of the wires is not connected to the battery
The switch isn't properly closed
The resistance of the light bulbs prevents current from flowing through the circuit
O A 1, 2, and 4
OB 1, 2, and 3
OC. 1, 3, and 4
OD. 2, 3, and 4
Answers
Answer:
(D) 2, 3, and 4
Explanation:
Given that the connection is parallel,
The parallel circuit consisting of a battery, a switch, wires, and 5 bulbs has been shown in the figure.
But none of the bulbs light up upon completing the connection.
The given possible reasons are:
Option (1): One of the bulbs is burnt out.As the connection is parallel, so the current from the battery is divided to all 5 bulbs, is one bulb is burnt out, it will not stop the current flowing through the other bulbs, so this is not the possible reason.
Option (2): One or more of the wires is not connected to the battery.If one or more wire is not connected to the battery, then there will be no current in the circuit, so, no bulb will glow. Hence this may be the possible reason.
Option (3): The switch isn't properly closed.If the switch isn't properly closed, then the circuit is not closed. Then there will be no current in the circuit, so, no bulb will glow. Hence this may be the possible reason.
Option (4): The resistance of the light bulbs prevents current from flowing through the circuit.If the resistance of the bulb is very large and the current flowing in it is too less, then there will not be sufficient to glow the bulb. so, no bulb will glow. Hence this may be the possible reason.
So, the possible may be options (2), (3), and (4).
Hence, option (D) is correct.
Related Questions
How does increasing the amount of charge on an object affect the electric force it exerts on another charged object?
The electric force increases because the amount of charge has an indirect relationship to the force.
The electric force increases because the amount of charge has a direct relationship to the force.
The electric force decreases because the amount of charge has an indirect relationship to the force.
The electric force decreases because the amount of charge has a direct relationship to the force.
Answers
Answer:
a
Explanation:
Answer:
A
Explanation:
A complex arrangement of pulleys forms what is called the block in a block and tackle. The rope used to lift the pulleys and the load is the tackle. A block and tackle is used to lift a truck engine, which has a weight and output force of nearly 8000 N. The input force required to lift this weight using the block and tackle is 400N. What is the mechanical advantage of the block and tackle?
Answers
Answer:
Mechanical advantage = 20
Explanation:
Given:
Output force = 8,000 N
Input force = 400 N
Find:
Mechanical advantage
Computation:
Mechanical advantage = Output force / Input force
Mechanical advantage = 8,000 / 400
Mechanical advantage = 20
A car traveling at 25 m/s speeds up to 30 m/s over a period of 5 seconds. The average acceleration of the car is?
Answers
Answer:
a= 1 m/s^2
Explanation:
Average acceleration can be found by dividing the change in velocity by the time.
a= ΔV/t
The change in velocity is the difference of the final velocity and initial velocity.
ΔV= final velocity - initial velocity
The final velocity is 30 m/s and the initial velocity is 25 m/s
ΔV= 30 m/s- 25 m/s
ΔV= 5 m/s
The time is 5 seconds.
Now we know the two values.
ΔV= 5 m/s
t= 5 s
Substitute the values into the formula.
a= 5 m/s / 5 s
Divide.
a= 1 m/s/s
a= 1 m/s^2
The average acceleration of the car is 1 meter per second squared.
Guys plz help answer this!!!!
Answers
Someone please do this ! ASAP I’ll give brainliest!
Answers
Answer:
The first law, an object will not change its motion unless a force acts on it.
The second law, the force on an object is equal to its mass times its acceleration.
The third law, when two objects interact, they apply forces to each other of equal magnitude and opposite direction.
Qui:
3
A fish is swimming forward in the ocean. Which of the following is accurate of the forces
between the fish and the water?
mplete
out of
ove flag
Select one:
O a. The force of the fish's tail on the water is less than the force of the water on the fish's
tail
11
O b. The force of the fish's tail points back while the force of the water points forward
Finis
O c. The force of the fish's tail on the water is greater than the force of the water on the fish's
tail
Time
O d. The forces of both the fish's tail and the water point in the same direction
Check
aus page
Next page
Answers
Answer:
O c.the force of the fish tail on the water..........
A physics student predicts based on the conservation of energy that if a pendulum is released from a height that it will
return to the same height. If the student tests this hypothesis, explain what will happen and why?
A)
The pendulum is a closed system and will return to the same height
because of the conservation of energy. B)The pendulum is an open system will not return to the same height
because the conservation of energy does not apply.
C)
The pendulum is a closed system and will not return to the same height
because the potential energy will be transformed into kinetic energy.
D)The pendulum is an open system will not return to the same height
because of some energy is transformed into heat and absorbed by the
surroundings.
Answers
Answer:
It’s D
Explanation:
Because I took the USA test prep and got it right
What is the end product of mitosis?
A. Four gametes
B. Two identical nuclei
C. One complete zygote
D. A cell with one set of chromosomes
Answers
Answer:
It is B
Explanation:
I did the test
From the given options, the end product of mitosis is Two identical nuclei (option b)
Mitosis is a fundamental cellular process that occurs in somatic (non-reproductive) cells, aiming to create two genetically identical daughter cells from one parent cell. It consists of several stages: prophase, metaphase, anaphase, and telophase.
During prophase, the chromatin (a combination of DNA and proteins) condenses into visible chromosomes, and the nuclear membrane disintegrates. In the subsequent stage, metaphase, the chromosomes align at the cell's equator, ensuring each daughter cell receives an equal number of chromosomes.
Next comes anaphase, where the paired chromosomes are pulled apart and move towards opposite poles of the cell. The final phase, telophase, involves the formation of two separate nuclei around the separated chromosomes.
At the end of mitosis, the single parent cell has divided into two genetically identical daughter cells, each containing a complete set of chromosomes. These daughter cells are fully functional and capable of carrying out their specific tasks within the organism.
So, the correct Answer: B. Two identical nuclei.
To know more about mitosis here
https://brainly.com/question/32255070
#SPJ6
a cyclist accelerates from a initial speed of 0 m/s to a final speed of 8 m/s in 3 second what is his acceleration?
Answers
Answer:
3 m/s ^2 rounded to one signifiicant figure.
Explanation:
Hope this helped!
show how you would connect three resistors each of resistance 6 ohm so that the combination has a resistance of first 9 ohm second 4 ohm
Answers
Answer:
show how you would connect three resistors each of resistance 6 ohm so that the combination has a resistance of first 9 ohm second 4 ohm
Explanation:
please make me as brainlelist
3. Label the parts of each wave.
Please help me!!!
Answers
Answer:
D is the wavelength
A is the crest
C is amplitude
B is trough
G is wavelength
H is compression
I is rarefaction
You are a medical student who has been instructed to make a transverse Cut through the abdomen.Calling through the abdomen in which direction will accomplish your goal
Answers
OC -5.9 m/s
2. A driver of a car traveling at 15.0 m/s applies the brakes, causing a
uniform acceleration of -2.0 m/s". How long does it take the car to
accelerate to a final speed of 10.0 m/s?
Answers
Answer:
2.5 s
Explanation:
The formula for acceleration is ;
a= v₂-v₁ / t
where ;
a= acceleration = -2 m/s²
v₂= final velocity = 10 m/s
v₁ = initial velocity = 15 m/s
t= time taken for the car to accelerate = ?
Applying the values in the formula as;
a= v₂-v₁ / t
-2 = 10 - 15 / t
-2t = -5
t= -5/ -2
t= 5/2 = 2.5 s
When does an object reach its terminal velocity?
Answers
Answer: Terminal velocity is achieved, therefore, when the speed of a moving object is no longer increasing or decreasing; the object's acceleration (or deceleration) is zero.
Explanation:.
Answer: Terminal velocity is achieved, therefore, when the speed of a moving object is no longer increasing or decreasing; the object's acceleration (or deceleration) is zero.
As others have said, 8 seconds to get to 90% of terminal velocity. But if you're falling from outer space, you could reach speeds much higher than terminal velocity, and slow down when you reach the atmosphere. If coming in from a long distance, you'll burn up like a meteorite.
Explanation:
What is the power of a crane that does 5.60 kJ of work in 2.80 s?
Answers
Answer:
I don't understand what is a power cane??
Critical Thinking Questions - Part II
1. Restate Newton's first law in terms of (a) acceleration and (b) change in velocity.
Anyone please help ASAP?????
Answers
Answer:
An object will continue in its state of motion unless an unbalanced
force is acting on it.
As stated in the first law, the presence of an unbalanced force will accelerate an object - changing either its speed, its direction, or both its speed and direction.
Explanation:
Look at my comment I think it would help.
A ball is released from a hot air balloon moving downward with a velocity of
-10.0 meters/second and a height of 1,000 meters. How long did it take the ball to reach the surface of Earth? Given: g = -9.8 meters/second2.
A
11.2 seconds
B.
12.1 seconds
C.
13.3 seconds
D.
13.5 seconds
E.
14.2 seconds
Answers
simple machines are widely used in our daily life. why?
Answers
Answer:
Simple machines are useful because they reduce effort or extend the ability of people to perform tasks beyond their normal capabilities. Simple machines that are widely used include the wheel and axle, pulley, inclined plane, screw, wedge and lever.
Answer:
Simple machines are useful because they reduce effort or extend the ability of people to perform tasks beyond their normal capabilities. Simple machines that are widely used include the wheel and axle, pulley, inclined plane, screw, wedge and lever.
Explanation:
funny answer cuz peeps be lazy
5. Electromagnetic waves consist of two forces
and
Answers
Answer:
Electromagnetic waves consist of both electric and magnetic field waves. These waves oscillate in perpendicular planes with respect to each other, and are in phase. The creation of all electromagnetic waves begins with an oscillating charged particle, which creates oscillating electric and magnetic fields.
Explanation:
What is light?
1. Only a particle
2. Neither a particle nor a wave.
3. Only a wave.
4. Scientists continue to debate this.
Answers
Answer:
3
Explanation:
I took an Educated guess because i really dont know tbh
Answer:
Neither.
Explanation:
A giraffe is . . .a giraffe.
In a similar manner, light is not a wave, but behaves like a wave. In this section, you will find that light also behaves like a particle.
In a way, light is...
also:
Isaac Newton tried to prove that light is a particle; Christiaan Huygens demonstrated that light is a wave. These men were both right and wrong.
Light is neither wave nor particle, (LOOK HERE)
but it does exhibit properties associated with waves and properties associated with particles.
light ;D i Hope Im right plz mark brainliest
Have a great day
Milgram's experiment was trying to find out why people:
Answers
Answer: obey authority figures
Explanation:
Answer: Obey authority figures
Explanation:
Question 1) For resonance to occur, the object must experience a frequency equal to its what?
natural frequency
period
wavelength
amplitude
Question 2) What variable affects the natural frequency of an organ pipe?
pipe width
pipe length
pipe area
pipe use
Question 3) Resonance in air columns is used in which of these musical instruments?
violin
trumpet
drums
guitar
Question 4) Which term describes the number of crests that pass a point in a given amount of time?
wave speed
frequency
wavelength
period
Queston 5) Which of the following is the human ear able to detect?
dog whistle
sonar
ultrasound
musical note
Answers
Explanation:
Note that resonance can only occur when the natural frequency is greater than the damping rate, multiplied by the square root of 2. If the damping is too large, then resonance cannot occur.
If the white car experiences a change in momentum equal to 105,000 kg*m/s and is in contact with the red car for 5 seconds before coming to rest, how much force, in Newtons, does the white car experience during the collision?
Answers
Answer:
21000 N
Explanation:
From the question given above, the following data were obtained:
Change in momentum = 105000 kg.m/s
Time = 5s
Force =?
Force is related to momentum and time according to the following formula:
Force = Change in momentum / time
With the above formula, we can calculate the force the white car experience during the collision. This can be obtained as illustrated below:
Change in momentum = 105000 kg.m/s
Time = 5s
Force =?
Force = Change in momentum / time
Force = 105000 / 5
Force = 21000 N
Thus, the white car experience a force of 21000 N during the collision.
5. Which is the best example of Newton's Second Law of Motion? (2 points)
Answers
Answer: Riding a bike to the park
Explanation:
Motion and force of physics. Plz answer.
Answers
Explanation:
a. " for every action there is an equal and opposite reaction".
b. The electric fan does not stop moving just after the switch turns off because of rational inertia force.
c. The force applied to first vehicle is 120N.
d. In my view it doesn't support the law of conservation of momentum. Momentum of 1 and 2 object before the collision is equal to the total momentum of two object after collision.
which is the smallest particle containing the same characteristics for a compound?
Answers
Answer:
A compound is a substance that consists of two or more elements in a unique composition. The smallest particle of a compound is called a molecule. Chemical bonds hold together the atoms of molecules
An experimental device imparts a force of magnitude f = 37 lb to the front edge of the rim at a to simulate the effect of a slam dunk. compute the moment of the force f about point o and about point
b. the moments are positive if counterclockwise, negative if clockwise. finally, locate a point c from the base at o to the location on the ground where the force imparts zero moment. the distance d from point o to point c is positive if c is to the right of o, and negative if to the left.
Answers
Answer:
a) τ = -518 lb-inch , b) d = 0 inch
Explanation:
a) The moment of a force is given by
τ = F x r
The bold letters indicate vectors, we can solve the magnitude of this expression with
τ = F r sin θ
and the angle by the right hand rule.
In general, the applied force is perpendicular to the rubber and in such a direction that the moment is opposite to the movement, therefore the angle is 270 = -90º and the sin 270 = -1
τ = -F r
To perform a complete calculation, the radius of the rubber is needed, for example for a small car the radius is about 14 inch = 1,167 feet
τ = -37 14
τ = -518 lb-inch
The point o is assumed to be the center of the wheel, the negative sign indicates that the moment is clockwise
b) As the rubber is a circle and the force is perpendicular, the vector product gives an emoticon perpendicular to the rubber, so that this value decreases to zero we must reduce the application point (distance), that is, the distance must be zero.
d = 0 inch
What do menarche and spermarche have to do with physical development?
Answers
what are the Standard System of unit
Answers
Answer:
SI
Explanation:
A 125 N box is being raised from the ground floor and accelerating due to a 175 N force. Identify all the forces and find the Net Force.
Answers
Answer:
Fn = 50 N
Explanation:
Net Force
The net force is the sum of all the forces acting on an object.
When all the forces act in a single line, the direction of the forces is given by their signs. Positive signs are assumed to be up and left on both axes.
The box being raised by a force has a weight of W=-125 N. The negative sign indicates the weight points down. The accelerating force goes up and its value is F=175 N. The positive sign indicates this force pushes the box up.
The forces acting on the box are:
The weight W=-125 N
The accelerating force F=175 N
The net force is
Fn = W + F = -125N + 175 N
Fn = 50 N