Answer:
a. RT = 9 Ohms
b. RT = 0.5 Ohms
Explanation:
Let the two resistors be A and B.
Let RT be equivalent resistance.
Given the following data;
Resistor A = 6ohms
Resistor B = 3ohms
a. To find the equivalent series resistance;
RT = RA + RB
RT = 6 + 3
RT = 9 Ohms
b. To find the equivalent parallel resistance;
RT = 1/RA + 1/RB
Substituting into the equation, we have
RT = 1/6 + 1/3
RT = 3/6
RT = 0.5 Ohms
As here the 6 ohm and 3 ohm resistors are first connected in series and then parallel, so we can just find out the equivalent series resistance by the formula of it, which is the individual sum of all resistors (for series) and for parallel combination, the reciprocal of the total resistance is the individual reciprocal sum of all resistors, so if we apply same Formula here for series first, then we will be having :
[tex]{:\implies \quad \sf R_{s}=6+3}[/tex]
[tex]{:\implies \quad \boxed{\bf{R_{s}=9\Omega}}}[/tex]
Now, for parallel combination:
[tex]{:\implies \quad \sf \dfrac{1}{R_{p}}=\dfrac13 +\dfrac16}[/tex]
[tex]{:\implies \quad \sf \dfrac{1}{R_{p}}=\dfrac{2+1}{6}}[/tex]
[tex]{:\implies \quad \sf \dfrac{1}{R_{p}}=\dfrac36}[/tex]
[tex]{:\implies \quad \sf \dfrac{1}{R_{p}}=\dfrac12}[/tex]
[tex]{:\implies \quad \boxed{\bf{R_{p}=2\Omega}}}[/tex]
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https://brainly.com/question/27101567a scooter weighs 120kg. Brakes are applied so that wheels stop rolling and start skidding. Find the force of friction if the coefficient of friction is 0.4
Assuming the scooter is moving horizontally on a flat surface, then by Newton's second law, the vertical forces (the normal force and the scooter's weight) cancel out:
n - w = 0
n = w
n = (120 kg) g = 1176 N
(where g = 9.8 m/s²)
Then the friction force has a magnitude of
f = µ n
where µ is the coefficient of kinetic friction, so that
f = 0.4 (1176 N) = 470.4 N ≈ 470 N
PLZZZZ HELP QUICK . 30 points. Emma weighs 560 N, she has decided to stay in shape so she is working out every morning, This morning she ran and lifted weight! 1. Calculate Emma's mass ( Gravity g= 9.8 N/kg). 2. If she ran 350 meters in 65 seconds, what was her velocity? 3. When she lifted weights, she exerted a 35 N to lift one of the weight 2 meters over the ground, what is the amount of work she performed? Note that units are important, so do not give any number without a unit to avoid losing points.
Force equals mass time acceleration. Weight is a force and it can replace force in the equation. The acceleration would be gravity, which is an acceleration.
1.)
Fw (weight) = m (mass) · g (gravity, 9.8 m/s²)
Fw = m * 9.81 m/s²
560N = m · 9.81 m/s²
m ≈ 57.08 kg
2.)
d = 350 meters
t = 65 seconds
velocity = d/t
velocity = 350 meters / 65 seconds
velocity ≈ 5.38 meters/sec
3.)
Force = 35N
Distance = 2 meters
Work = Force · Distance
Work = 35N · 2 meters
Work = 70 J
What is the origin of cold, wet air masses?
over water in tropical zones
over land in polar regions
over water in polar regions
over land in tropical areas
jsdsddsd check the image plss
Answer:
C. Over water in polar regions
Explanation:
Increasing the number of loops in a electromagnet or solenoid will cause it to be stronger
True or false?
A student lifts a 1.4-kg box of magazines vertically from rest with an upward force of 52.7 N. The distance of the lift is 1.6 meters. Find the
total work done on the box
-64.41
Answer:
The work done on the box is 21.952 Joules
Explanation:
The given parameters are;
The mass of the box of magazines, m = 1.4 kg
The upward force with which the student lifts the magazine = 52.7 N
The distance (height) of the lift, h = 1.6 meters
The work done on the box = The potential energy gained by the box of magazine, P. E.
Potential energy gained by elevation, P. E. = Mass, m × The acceleration due to gravity, g × Height, h
Where;
The acceleration due to gravity, g = 9.8 m/s²
∴ P. E. = m × g × h = 1.4 kg × 9.8 m/s^2 × 1.6 m = 21.952 Joules
The work done on the box = The potential energy gained by the box of magazine, P. E. = 21.952 Joules
The total work done on the box is 21.952 Joules
The workdone on the box is equal to the potential energy possessed by the body. Mathematically;
[tex]W=P.E=mgh[/tex]
m is the mass of the bodyg is the acceleration due to gravityh is the heightGiven the following parameters
m = 1.4kg
g = 9.8m/s²
h = 1.6m
Substitute the given parameters into the formula:
[tex]W = 1.4 \times 9.8 \timees 1.6\\W=21.952Joules[/tex]
Hence the total work done on the box is 21.952 Joules
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in this setup how can potential energy be converted into kinetic energy .
Answer:
If force is applied to cause the motion of the body
Explanation:
In the setup given in this diagram, potential energy can be converted into kinetic energy by applying force on the cart or object to move it down the slope.
Potential energy is the energy due to the position of a body. The body has huge potential energy at its current position.
Kinetic energy is the energy due to the motion of a body.
As the body moves down the slope and its velocity increases, it gains massive kinetic energy.
Down the slope, the kinetic energy increases as the potential energy decreases.
At the bottom of the slope, the potential energy becomes zero and the kinetic energy is at its maximum.
A room inside a recording studio is lined with soft foam in order to absorb the energy of sound waves produced inside the room. How will sound waves interact with the foam?
A. The foam will refract the waves, causing their frequency to change
B. The foam will take up some of the waves' energy, decreasing their amplitude
C. The foam will cause constructive interference, increasing the waves' amplitude.
D. The foam will reflect the waves, causing an echo.
It's B
Answer:
B. The foam will take up some of the waves' energy, decreasing their amplitude
How could you increase the kinetic energy of a wagon without increasing it's mass
Answer:
send the wagon down a higher hill
The ocean’s tides are not only affected by the shape of the coastlines, or slope of the ocean floor, but also by the gravitational tug of the Sun and the Moon. Write a 600 word report on the effect of the Moon, and Sun, on tidal reaction, and high tides and low tides. What orientation are the Sun and Moon in to create high tides? Low tides? There are two special types of tides. What are they called and what positions are the Sun and the Moon in during these times?
Answer:
a) According to Newton's law of gravitation, as the distance between the Moon and the Earth decreases, the gravitational attraction increases and vice versa
The gravitational force of the Moon on the Earth causes the Earth to be slightly bulged on the side directly facing the Moon
The gravitational force also pulls the water bodies on the Earth's surface towards the Moon in the same manner and the effect is more pronounced due to the ability of the liquid water to assume a shape based on the magnitude of the gravitational field attracting it
Therefore, the region where the Moon is closest to the Earth we have a high tide as the water level rises and the region which is perpendicular to where the Moon is located has a low tide
b) The two special types of tides are
1) The neap tide
2) The spring tide
Neap tide
Neap tide occurs when the Sun and Moon are 90° apart from each other when they are viewed by an observer from Earth
The gravitational pull of the Sun cancels (partially) the effect of the gravitational pull and tidal force of the Moon, resulting in minimum tidal range
Spring Tide
Spring tide occurs when the Earth, the Moon, and the Sun are simultaneously inline, such that the Sun reinforces the gravitational pull and tidal force of the Moon, resulting in a maximum tidal range
Explanation:
Answer:a
Explanation:
Nalah labels ten rats with the numbers 1 through 10. Then, she records how long it takes each rat to run through a maze. She finds it difficult to graph her data in a line graph. What change could she make to her experimental design that would allow her to plot a clearly displayed data trend in a single line graph?
A) Repeat the experiment ten times. Label the y-axis “Time” and the x-axis “Trial.” Plot the average time for all ten rats for each trial of the experiment.
B) Divide the rats into groups of females and males and repeat. Label the y-axis “Time” and the x-axis “Sex of Rat.” Plot the average time for each group.
C) Repeat the experiment ten times. Label the y-axis “Rat Number” and the x-axis “Time.” Plot the individual time for all ten rats for each trial of the experiment.
D) Divide the rats into two groups based on their speed from the initial data. Label the y-axis “Time” and the x-axis “Group.” Plot the average time for each group.
Answer: A) Repeat the experiment ten times. Label the y-axis “Time” and the x-axis “Trial.” Plot the average time for all ten rats for each trial of the experiment.
Answer:
we have to make another question we maxed it out again lol
Explanation:
Answer:
A. Repeat the experiment ten times. Label the y-axis “Time” and the x-axis “Trial.” Plot the average time for all ten rats for each trial of the experiment.
Explanation:
Light waves can be easily blocked but ______ waves pass through all substances? ( fill in the blank)
The graph shows the amplitude of a passing wave over time in seconds (s).
What is the approximate frequency of the wave shown?
Answer:
Option B. 0.3 Hz
Explanation:
From the question given above, the following data were obtained:
Period (T) = 3 s
Frequency (f) =?
Frequency is related to the period according to the following equation:
Frequency (f) = 1 / period (T)
f = 1/T
With the above formula, we can obtain the frequency wave as illustrated below:
Period (T) = 3 s
Frequency (f) =?
f = 1/T
f = 1/3
f = 0.3 Hz
Therefore, the frequency of the wave is 0.3 Hz
Answer:
The answer is 0.3 Hz
Explanation:
I took AP EX quiz.
pls help me with a and b ill mark u brainlist
Answer:
a) i) In the first image we can see that almost the whole island is covered with forest. While in the second one, we can see that near the edges of the island the amount of forest cover has ben decreased. This may be because is easier to cut the trees near the shore of the island.
ii) There are different motives to cut the trees, one may be to build constructions. People need to remove the trees in an area in order to be able to build in there. Also, the trees can be used in a lot of different ways as raw materials.
b) i) Less forest cover also means that there is a smaller habitable area for the local life (animals, insects, etc...). Then the animals need to be more "cramped", and this can affect greatly the life of them.
ii) There will be less food and fewer natural resources for the locals.
If all objects have gravitational pulls, why is every object not being constantly accelerated toward every other object?
Answer:
Some object have less gravitational pull than other objects.
Explanation:
Spiderman has a mass of 80 kg. He knows his webbing will break if it is exposed to a 200 N force. What is the maximum height he can swing off of? You can assume aerodynamic forces prevent Spiderman from travelling greater than 30 m/s.
Answer:
This depends on the writers
if they want they can make spiderman deny the laws of nature
A quantity that is fully described by magnitude alone is a ___________ quantity. A quantity that is fully described by both magnitude and direction is a ___________ quantity.
Answer:
Scalar quantity
Vector quantity
Explanation:
A scalar quantity is a quantity that is fully described by magnitude alone. Examples include; mass, temperature etc
A vector quantity is described by both magnitude and direction. E.g force, weight etc
guysss..pleaseee answer!
use calculations to explain why a person with a mass of 50kg would find it easier to jump on Earth than on Jupiter.
Answer:
Hello There!!
Explanation:
The answer is=>Because the value of gravatation on Jupiter is high in comparison with Earth and it will be hard to jump on Jupiter.
hope this helps,have a great day!!
~Pinky~
How is the bike in the picture a system and how is the Earth a system?
Answer:
The earth is a vast, complex system powered by two sources of energy: an internal source (the decay of radioactive elements in the geosphere, which generates geothermal heat) and an external source (the solar radiation received from the Sun); the vast majority of the energy in the earth system comes from the Sun.
Explanation:
becuse
1. Explain how you calculate the net force in any direction on the box.
2. Suppose an upward force of 15 N is added to the box. What will be the net vertical force on the box?
3. What force could be applied to the box to make the net force in the horizontal direction zero? Explain.
4. Suppose a force of 25 N to the right is added to the box. What will be the net force to the right?
1.Explain how you calculate the net force in any direction on the box.
If the two horizantal (left to right) forces act on an object in opposite directions and they don't exactly cancel out, what is left over is the net force In the diagram, the net force is 50 Newtons.
The equation you have to do (100 N - 50 N = 50 N).
If the two vertical (up and down) forces act on an object in opposite directions and they do cancel out, what is left over is the net force In the diagram, the net force is 0 Newtons. The equation you have to do. (25 N - 25 N = 0 N)
Final Answer: 50 N
2.Suppose an upward force of 15 N is added to the box. What will be the net vertical force on the box?
The net vertical force ( up and down) would be 15 N
3.What force could be applied to the box to make the net force in the horizontal direction zero? Explain.
You could apply another horizontal (left to right) force of 50 N then the horizontal net force would be 0 N
4.Suppose a force of 25 N to the right is added to the box. What will be the net force to the right?
If suppose I say I added a horizontal (left to right) net force of 25 right next to the 50 N. The net force for the whole box would be 25 N.
1. The net force in any direction is calculated by calculating the net horizontal force and the net vertical force on the box.
What is Newton's second law?Newton's Second Law states that The resultant force acting on an object is proportional to the rate of change of momentum.
The mathematical expression for Newton's second law is as follows
F = ma
2. If an upward force of 15 N is added to the box, then the net vertical force on the box would be 15 N in the upward direction because earlier the net vertical force on the box was 0 N.
3. A force of 50 N to the right could be applied to the box to make the net force in the horizontal direction zero.
4. If a force of 25 N to the right is added to the box then the net force o the right would be 75 N.
Learn more about Newton's second law, here
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An object is 45.0 kg here on Earth. What is its mass on Jupiter if the acceleration
due to gravity on Jupiter is 24.79 m/s 2?
A.) 1.82 kg
B.) 45.0 kg
C.) 1120 kg
D.) 441 kg
Answer:
B. 45.0 kg
Explanation:
On earth the object has ;
Mass = 45 kg
acceleration = 9.81 m/s²
On Jupiter, acceleration is 24.79 m/s²
The mass of this object on Jupiter will be 45 kg. It will not change. Mass of an object will only change when you remove part of the object from it or add to it another part. The mass is the same on Earth and on Jupiter. However, due to increased acceleration on Jupiter , the weight will change/ increase because;
Weight = mass * acceleration
On Earth
Weight of the object will be : 45 * 9.81 = 441.45 kg
On Jupiter
Weight of the object will be : 45*24.79 =1115.55 kg
what is the electric potential 4.20 m from a -3.37*10^-6 C charge?
Answer:
[tex]V =-7221.43 \ V[/tex]
Explanation:
The Electric Potential
The electric potential at a point is equal to the electric potential energy (measured in joules) of any charged particle at that location divided by the charge (measured in coulombs) of the particle.
To calculate the electric potential of a point charge Q at a distance r, we use the formula:
[tex]\displaystyle V=\frac{kQ}{r}[/tex]
Where
[tex]k=9\cdot 10^9\ N.m^2/c^2[/tex]
We are given the following data:
[tex]Q=-3.37\cdot 10^{-6}\ c[/tex]
r = 4.20 m
Calculating:
[tex]\displaystyle V=\frac{9\cdot 10^9*(-3.37\cdot 10^{-6})}{4.2}[/tex]
[tex]\mathbf{V =-7221.43 \ V}[/tex]
Answer:
-7221.43 V
Explanation:
its for Acellus
please help answer worth 15!!
Answer:
First option, check image uploaded.
Explanation:
Acceleration defined as time rate of change of velocity. Or change in velocity per change in time.
Acceleration is also the slope of the graph of velocity against time.
[tex]Acceleration = \frac{dv}{dt}[/tex]
Also change in displacement with time is velocity.
From the given options, the correct graph is in the first option, as shown in the image uploaded.
which of the following is a subsurface event takes place during the rock cycle
deposition
erosion
weathering
plate tectonics
Answer:
The answer is A. Cementing...
Explanation:
hope this helps
Answer:
plate tectonics
Explanation:
brainliest also 100% flvs
Choose the incorrect statement.
Report an
question 1
O Heat is a measure of how hot or how cold an
object is
O Heat flows from a substance of higher
temperature to a substance with a cooler
temperature.
O Heat is measured in units of calories or joules.
O Heat is the energy flow from two substances at
different temperatures.
Answer:
first one,heat is a measure of.........
Question: A=2.70 and B=9.3, then A+B=
a) 12
b) 12.00
c) 12.0
d) None of these
Answer:
a) 12
Explanation:
The given variables are:
A = 2.70
B = 9.3
For addition, the rule states that you cannot be more precise than the least precise measurement given.
The least precise measurement is B = 9.3 and it has 2 significant numbers.
A + B = 2.70 + 9.3 = 12
In the diagrams, the solid green line represents Earth's rotational axis and the dashed red line represents the magnetic field axis. Which diagram accurately shows Earth's magnetic field?
At center the Earth with the sun in the upper left on a black background and a dotted red line showing the Earth's axis of rotation. Yellow circles pass through Earth's poles to both sides of the globe with arrowheads pointing down. A blue line passes a few degrees to the right of the dotted red line above the Equator and a few degrees to the left of the dotted red line below the Equator.
At center the Earth with the sun in the upper left on a black background and a dotted red line showing the Earth's axis of rotation. Yellow circles pass through Earth's poles to both sides of the globe with arrowheads pointing up. A blue line passes a few degrees to the right of the dotted red line above the Equator and a few degrees to the left of the dotted red line below the Equator.
At center the Earth with the sun in the upper left on a black background and a dotted red line showing the Earth's axis of rotation. Yellow circles pass through Earth's poles to both sides of the globe with arrowheads pointing up. A blue line passes on top of the dotted red line.
At center the Earth with the sun in the upper left on a black background and a dotted red line showing the Earth's axis of rotation. Yellow circles pass through Earth's poles to both sides of the globe with arrowheads pointing down. A blue line passes on top of the dotted red line.
Answer:
b
Explanation:
Answer:
b
Explanation:
change 200km/hr into m/sec
Answer:
200km/hr=55.55m/sec
Explanation:
200km/1hr×1000m/1km×1hr/3600sec=200,000/36000
A rock is dropped from a height of 2.7m. How fast is it going when it hits the ground?
PLEASE HELP ME!!!
The force that pulls falling objects toward Earth is called *
gravity
free fall
acceleration
air resistance
Answer:
Gravity
Explanation:
That's easy because gravity is the only thing that can pull us down that hard at that fast without anything helping it.
help pls !!!!! which statement is true for chemical reactions but not for nuclear reactions?
Answer:
Explanation:
anyways
B) The nuclei of the atoms involved stay the same .
What are nuclear reactions ?
Nuclear Reactions are processes in which one or more nuclides are produced from a collision between two nuclei or one nucleus and a subatomic particle.
In a nuclear reactions the elements can change from one to another. Nuclei can break apart to form smaller elements. Nuclei can fuse together to make heavier elements. Neutrons can turn into protons and protons into neutrons. But this does not happen in a chemical reaction only composition of elements changes and rearrangement of the molecular or ionic structure of a substance take place in a chemical reaction
hence , correct answer is B) The nuclei of the atoms involved stay the same .
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