Answer:
let the voltages of the cell be V and R the equivalent resistance of the circuit.
I1=RV∵ only one cell connected ;
I2=RV+V=R2V∵ two cells connected in series ;
I3=RV+RV=R2V∵ two cells connected in parallel ⇒ total current is same as sum of the currents due to each.
Now ,
LHS = 3I3I2=3R2VR2V=3(R24V2)
RHS = 2I3(I1+I2)=2R2V(RV+R2V)=2R2VR3V=3R2therefore, LHS = RHS
Can someone help me out?
Answer:
1) The car is slowing down
2) A = 40N forward & B = 25N up
Explanation:
Whenever you're dealing with forces on moving objects, it is important to look at each of the numbers and the directions they're going in.
With the racecar, we see it has four forces on it, 2,000 N up and down, 8,000 back, and 6,000 N forward. Now, each of these forces are going in their respective directions, but they are most in comparison with the force going in the opposite direction (vertical axis, horizontal axis). The two 2,000 N forces will cancel each other out since there is an equal force in both directions, causing a net force of 0 N on the vertical axis. This is because the car is most likely moving on a flat surface. As for the horizontal axis, we simply subtract 6,000 & 8,000 to get a net force of -2,000 N in the backwards direction, telling us that the car is slowing down.
As for the boxes, we see the same vertical and horizontal axes, but separated to each box. Box A has a net force of 40 N in the forward direction and Box B has a net force of 25 N in the upward direction.
I need help please and thanks
Answer:
4.Given:
m=1000kg
a=(3m/s)^2
F=m×a
=1000×3
=3000N
5.Given:
m=50kg
a=(5m/s)^2
F=m×a
=50×5
=250N
6. Given
F=250N
a=(5m/s)^2
m=?
F=m×a
250N=m×(5m/s)^2
m×(5m/s)^2=250N
m=250N÷(5m/s)^2
m=50kg
А
man of mass
77kg stands on a
Spring-weighing
Machine
inside a lift
When the lift starts to ascend, its accel-
eration 2 m/s2. what will be reading on.
the machine?
Explanation:
The reading on the scale is
W = m(g + a)
= (77 kg)(9.8 m/s^2 + 2 m/s^2)
= 908.6 N
List 5/10 qualities/characteristics of what you believe a leader should have and why
Answer:
this is your choice entirely but anyways
professionalism so they don't slack off
respect so they can be respected while treating others with respect
kindness (even if only a little) so they aren't plain out rude
if they're in school, passing grades so they can be taken seriously
role model so they can teach younger people
Explanation:
.,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
what can electromagnetic and mechanical waves not carry?
Answer:
Water ;)
Explanation:
have a great rest of your day :)
Pls help,will give brainliest
Answer:
It would most likly be negitive, but I'm not 100% sure.
Explanation:
a snail is at rest. it accelerates at a rate of 0.0075m/s^2. calculate the time it takes to reach a speed of 0.0135m/s
Answer:
1.8 secondsExplanation:
Initial velocity (u) = 0 m/s[Since, it is at rest. ]
Acceleration (a) = 0.0075 m/s²Final velocity (v) = 0.0135 m/s²We are asked to calculate time taken to reach a speed of 0.0135m/s.
By using the first equation of motion,
→ v = u + atv denotes final velocityu denotes initial velocitya denotes accelerationt denotes time takenSubstituting values,
→ 0.0135 = 0 + 0.0075t
→ 0.0135 = 0.0075t
→ 0.0135 ÷ 0.0075 = t
→ 1350000 ÷ 750000 = t
→ 135 ÷ 75 = t
→ 1.8 = t
→ Time taken = 1.8 secondsTherefore, it takes 1.8 seconds to reach a speed of 0.0135m/s.
what is three type of earthquake waves
Answer:primary,secondary and surface waves I do believe
Explanation:
PLEASE ACTUAL HELP NO SPAMS OR FALSE ANSWERS
First, evaluate these three models. One represents fission, one fusion, and one radioactive decay. Write three sentences about each one according to the following framework:
---State what reaction the model represents, including what it demonstrates about mass and/or energy.
---State whether you think the model accurately represents the reaction. Explain why or why not.
---Suggest one way to improve the model.
Model A: Two sponge balls representing two atoms are soaked in water. You hold one ball, and your friend holds the other. Then you press the two balls together. As you press them together, water leaks out. What type of reaction does this model represent?
Model B: You draw a tree diagram showing a large atom splitting into two parts and neutrons being released. Your diagram also shows the released neutrons hitting other large atoms, which then each split in two and release more neutrons, which hit more large atoms, and so on. What type of reaction does this model represent?
Model C: You have 100 candies with the letter "M" on one side. You pour the candies into a pan. You count and remove all the candies with the "M" facing upward. Then you shake the pan and again count and remove all the candies with "M" facing upward. You shake, count, and remove candies four more times. What type of reaction does this model represent?
When energy is transferred from system to surrounding then the corresponding reaction known as exothermic reaction in Modle A when we press the ball(atom) the water(energy) is transferred into surrounding hence it is an exothermic reaction.
When a single atom disintegrate to give two or more atom with radioactive substance then the corresponding reaction know as Nuclear Fission reaction. hence Modle B represents Nuclear fission reaction.
The Model C represents Radioactive decay, So in the given example or model the water is playing role of radiation through which we are removing the candies having M on upside.
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1 point
1.) Alpha has a surface temperature of 6,700 K and Beta has 17,000 K.
Which star appears more blue?
Answer:
Beta 17,000K, bc warmer is more blue
What happens to the speed and frequency of a light ray when it passes from glass into water?
The speed decreases and the frequency increases.
The speed decreases and the frequency remains the same.
The speed increases and the frequency increases.
The speed increases and the frequency remains the same.
Answer:
The speed decreases and the frequency remains the same.
Explanation:
Had it for a castle learning assignment, guessed and got it correct.
The speed of a light ray decreases and its frequency remains the same when it passes from glass into water.
What is the speed of light?The speed of light, also known as the velocity of light, is a fundamental constant of nature and is one of the most well-known physical quantities. It is defined as the speed at which electromagnetic radiation (light) travels through a vacuum, which has a constant value of 299,792,458 meters per second (m/s).
This speed is considered to be the fastest that anything can travel in the universe, and it is a critical component in many physical and biological processes. The speed of light is used in a wide range of scientific and technological fields, including optics, electronics, astronomy, and quantum mechanics. It is considered to be a universal constant and does not change with time, distance, or the medium through which it travels.
Learn more about light ray, here:
https://brainly.com/question/13851007
#SPJ6
help mee with the workk no link please ·ᴗ·
Explanation: It Should Be 30:60 So If You Simplify It Would Be 1:2
(I think it's The answer I don't Know)
As a sound wave changes from one to another, it will often be refracted.A. frequency B. amplitude C. medium D. wavelength?
Answer: the answer is medium
Explanation:
8. _________________ became the primary commercial enterprise and ______________________ were the primary means of commercial transport.
Answer:
Corporation
Trucks
Explanation:
There are various methods of commercial enterprise. There can be sole proprietor, partnership arrangement, corporation and joint ventures. It is dependent on the requirements of a person who wishes to enter the business. The primary commercial enterprise is corporation. It is regulated by the government and fund is collected from the shareholders. The primary mean of commercial transport is trucks. They are used to move raw material and finished goods from factory to the stores.
Please help correct answering get 20 points (physical science btw )
A roller coaster goes down a slope with a starting speed of 5 m/s then 6
seconds later at the bottom of the slope the roller coaster is moving at a
speed of 27 m/s. What is the acceleration of the roller coaster? **Round to
1 decimal place**
Answer:
Acceleration = 3.67 m/s²
Explanation:
In physics, acceleration can be defined as the rate of change of the velocity of an object with respect to time.
This simply means that, acceleration is given by the subtraction of initial velocity from the final velocity all over time.
Hence, if we subtract the initial velocity from the final velocity and divide that by the time, we can calculate an object’s acceleration.
Mathematically, acceleration is given by the equation;
[tex]Acceleration (a) = \frac{final \; velocity - initial \; velocity}{time}[/tex]
Given the following data;
Initial velocity, u = 5 m/s
Final velocity, v = 27
Time, t = 6
To find the acceleration;
Acceleration = (v - u)/t
Acceleration = (27 - 5)/6
Acceleration = 22/6
Acceleration = 3.67 m/s²
The graph shows the layers of Earth's atmosphere. Which statement best describes the relationship between temperature and altitude in the atmosphere?
A. The relationship between temperature and altitude is variable and unpredictable.
B. Overall, the temperature of the atmosphere increases with altitude.
C. The relationship between temperature and altitude is different in each zone of the atmosphere.
D. Temperature decreases with altitude until the stratosphere is reached, and then it increases from there.
Answer:
The best statement which describe this is actually:
D. Temperature decreases with altitude until the stratosphere is reached, and then it increases from there.
Explanation:
From the graph shown, it could be seen that, temperature decrease with height. The higher the height, the lower the temperature. For example, from the graph, when the height was around 50 km, the temperature was within the range of -10⁰C to 0⁰C. On the other hand, when the height increases around 78 km, the temperature decreases to the range of to -70 ⁰C to -80⁰C
Please help!
Drag and drop the words into the correct locations
Answer:
background radiation
uniform
13700000000 years ago
A 12.0 kg object is stationary on a surface that is inclined 30.0° relative to the horizontal. The coefficient of friction is 0.65. Use a free body diagram to determine the magnitude of the force of static friction on the block.
Help please?
Answer:
hope you can understand the calculations
5. It took 500 newtons of force to push a car 40 meters. How
much work was done?
Answer:
Explanation:
work done=force * displacement
=500 N * 40 m
=2000 joule
Plastics are used in millions of objects we use every day. Why are plastics NOT considered natural resources?
A. They are recyclable.
B. They are made by people. C. They are bad for the environment.
D. They are made entirely from nonrenewable resources.
Answer:
letter C. they are bad for the environment
Time ____ is a phenomenon in which objects in motion and objects at rest experience time differently.
Time dilation is a phenomenon in which objects in motion and objects at rest experience time differently.
What is Time?This can be defined as a measurable period during which an action exists or continues and the standard unit is seconds.
Time dilation occurs when objects in motion and objects at rest experience time differently. In this situation, the clock of an individual tends to be slower than that of the other and is known as a theory of relativity.
Read more about Time here https://brainly.com/question/13893070
Answer:
Dilation
Explanation:
A cart is uniformly decelerating from rest. The net force acting on the cart is
Answer:
i think the answer is constant
In close pipe resonator high pressure reflects as low pressure
1) True
2) False
Answer:
true
Explanation:
i think it is the answer
for every 1000 joules or useful energy output, the heater wastes 100 joules, find the input energy of the heater.
Answer:
the Input Energy is 1,100 J
Explanation:
Given;
useful energy, = 1000 J
energy wasted, = 100 J
The total or input energy is given as;
Input Energy = useful energy + energy wasted
Input Energy = 1000 J + 100 J
Input Energy = 1,100 J
Therefore, the Input Energy is 1,100 J
when organism dies , the nutrients in its body ?
Answer: are released by the action of decomposers
Explanation:
Justin mixed two cups of lemon juice and two cups of sugar with a gallon of water in a pitcher. What happened to the lemon juice, sugar, and water?
Answer:
The correct answer is - Lemon juice hydrolyzes sugar and dissolves it faster and creates a solution.
Explanation:
When mixing lemon juice and sugar in water are mixed together, the lemon juice dissolves the sugar faster as it has citric acid that hydrolyzes sucrose molecules of sugar in glucose and fructose.
This mixing of all three lemon juice, water, and sugar form a solution. Here in this solution, water is solvent, and sugar and lemon juice are solutes. The quantity of all three determined the nature of the solution if it will be acidic or more diluted.
If a cactus is given more water, then it will grow taller. This is because water is important to plant health.
What does the statement above represent?
an experiment
a hypothesis
a theory
a law
Answer:
An experiment
Explanation:
I guess.....
....
.
.
Answer:
a theory
Explanation:
It takes 6s for a stone to fall from the top of a building to the ground calculate i.the height of the building ii.the speed of the stone just before it strikes the ground (g=10ms^-2
Answer:
fffffff
Explanation:
PLS ANSWER QUICK I HAVE A COUPLE MINUTES.
An object moves through space with balanced forces acting on it. Which statement
best describes the speed and direction of the object as long as the forces acting on it
remain balanced?
A. The speed and direction of the object will both change.
B. The speed and direction of the object will remain constanti
C. The speed will change, but the direction will remain constant.
D. The speed will remain constant but the direction will change
Answer:
B
Explanation:
Newton's first law of motion states that every object will continue in a state of rest or uniform motion in a straight line unless a resultant force acts on it
balanced force means resultant force is 0N
this means that the speed will not change as it uniform and the direction will not change because it will continue at the same speed in a statight line and direction
sorry man, I think it was late
hope this helps