A 12 N force is used to extend a spring with a spring constant of 84 N/m. Calculate the extension of the spring.

Answers

Answer 1

Answer:

72n

Explanation:


Related Questions

2H20 1) How many hydrogen atoms are represented by this much water? A) 1 B) 2 )4 D) 6​

Answers

4 hydrogen atoms.. l hope it helped

a. A pure sample was analysed and was found to contain 6.25 g of lithium, 5.40 g of carbon, & 21.60
g of oxygen. Calculate the empirical formula. Show your work out. If you do not show any work out,
marks will not be given. [3]
b. The molar mass of the compound is 116 g/mol, what is its molecular formula?

PLS URGENTLY ANS

Answers

The empirical formula of the compound is Li₂CO₃

First, we will determine the respective number of moles of each element present in the compound by dividing by their atomic masses

Lithium                      Carbon                          Oxygen

6.25÷6.94                 5.40÷12.01                    21.60÷16.00

0.9006                      0.4496                          1.35

Now, divide through by the smallest number of moles, that is, 0.4496

Lithium                      Carbon                          Oxygen

0.9006÷0.4496        0.4496÷0.4496            1.35÷0.4496

2                                      1                                    3

Hence, the empirical formula of the compound is Li₂CO₃

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If you took a balloon of gas and then warmed the balloon in a sunny window, what can now be said about the density of the gas in the balloon

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Explanation:

The density of the gas in the balloon will explode

In both experiments, what accounts for the change in pressure you observed as you changed the volume of the gas

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Answer: When a gas is in a smaller volume, the molecules are more confined and bump into the walls of the flask more, thereby exerting a greater pressure.

Explanation:

In at least 150 words, describe at least three things that occur naturally everyday and how science has had an impact on what we think or do about them.


its a physical science project paper.

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Answer:

Explanation:

The three things that occur naturally everyday and how science has had an impact on what we think or do about them is

Photosynthesis is a process in which green plants manufacture there own food in the presence of sunlight through the equation below

6CO₂ + 6H₂O ⇒ C₆H₁₂O₆ + 6O₂

From the equation above, it can be seen that aside from the food (C₆H₁₂O₆) produced by green plants during photosynthesis, science has assisted us in knowing that these green plants take-up the carbon dioxide (CO₂) that is exhaled by humans and release the oxygen (O₂) that is inhaled by humans thereby purifying the air of the surrounding they are found. This concept has made man understand the importance of planting in residential areas.

Depletion of the Ozone layer; the ozone layer is a layer in the earth stratosphere which shields the earth from direct sunlight/rays. Over the years, the burning of hydrocarbon on earth has caused the depletion of this layer thereby exposing the earth to more direct sunlight from the sun. Science has had an impact in the thinking of man in this regard by making us more conscious of the risk of burning these hydrocarbons which has led to the collective efforts by governments across the world to minimize the burning of these substances.

Rain; rain are droplets of water that fall from the atmosphere. Rain formation occurs when water (in the form of ocean, river and/or seas) are evaporated into the atmosphere as a result of heat from the sun. These evaporated water molecule rises and cools down to form and form a cloud It is then returned to earth in the form of rain. This explanation changes the mythical understanding of rain in different culture

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some properties of the particles that are sources of electric charge include

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The most basic properties of an electric charge is, that it can create a field in the space around it, allowing it to interact with other electric charges.

based on what you know about the location in relation to the sun why is this called the goldilock zone in other galaxies

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Answer: It's an area that's an optimal distance from the sun for potentially supporting  life

if a balloon is squeezed, what happens to the pressure of the gas inside the balloon?

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Answer:   By squeezing the balloon, you reduce the space the gas particles can occupy. As the particles are pushed a bit closer together, they collide with more, so the pressure from the moving gas particles increases. If the volume increases, its pressure decreases.

A cliff diver dove off a cliff at 8 m/s and landed in the water 21 m away from the cliff. How high is the cliff?

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The vertical height of the cliff on which the diver drove off is 33.76 m.

The given parameters;

horizontal velocity of the diver, v = 8 m/shorizontal distance traveled by the diver, X = 21

The time of motion of the cliff diver is calculated as follows;

[tex]t = \frac{X}{v} \\\\t = \frac{21}{8} \\\\t = 2.625 \ s[/tex]

The vertical height of the cliff is calculated as follows;

[tex]h = v_0_y t + \frac{1}{2} gt^2\\\\h = 0 + 0.5 \times 9.8 \times 2.625^2\\\\h = 33.76 \ m[/tex]

Thus, the vertical height of the cliff on which the diver drove off is 33.76 m.

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If the coefficient of kinetic friction between the puck and the ice is 0.05, how far does the puck slide before coming to rest? Solve this problem using conservation of energy. initial speed is 5.3 m/s

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Hi there!

We know that:

Ei = Ef

There is work being done on the object, so:

W = Force · displacement = F · d ⇒ work due to friction

KEi - Fd = KEf (0)

KEi = Fd

Input variables:

1/2mv² = μmgd

Cancel out the mass:

1/2v² = μgd

Solve for d:

1/2(5.3²)/(0.05 · 9.81) = 28.63 m

What is the equation for density?
O D= m
V
O D= V
-
m
O D= m
O D= { mu?
2

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It is P=M/V but I guess you could change the P with a D depending on what year group you are in. So it’s D=M/V.

Nick is so excited to Trick-or-Treat, he RUNS down the street to the house that has the BIG candy bars! He ran 203 meters. It took him 40 seconds to arrive at the "big candy bar" house. What was his average speed?

Help- I don't know how to answer this science question (yes, it's science/physics. )

Answers

Answer:

it would take him 1 minute to run 304.5 meters and 1 second to run 5.075 meters

Explanation:

Noah runs 200 m to the east and then 400 m north. What is Noah's distance and displacement?

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Answer:

Noah has run 600 metres north east

HELP PLZZZZZZ
A 30 g spoon is lifted above a table and has 0.062 J of potential energy. How high is it?

Answers

Hi there!

We know that:

U (Potential energy) = mgh

We are given the potential energy, so we can rearrange to solve for h (height):

U/mg = h

g = 9.81 m/s²

m = 30 g ⇒ 0.03 kg

0.062/(0.03 · 9.81) = 0.211 m

the following statements show contact force, except _____
a. closing your room's door
b. pushing your desk
c. shooting a ball on the floor using a rope
d. pulling a 10kg box on the floor using a rope​

Answers

Answer:

d. pulling a 10kg box on the floor using a rope

The part of the shore that represents the water's edge and migrates back and forth with the tide is known as the ________.

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Answer :It is know as the shore line

Explanation:

Define power and explain how to determine power. (4 points)

Answers

The definition of power is operating electrically or having strength or force. An example of power is the functioning of a gasoline-driven saw or tool. Or Power is related to other quantities; for example, the power involved in moving a ground vehicle is the product of the traction force on the wheels and the velocity of the vehicle. The output power of a motor is the product of the torque that the motor generates and the angular velocity of its output shaft. Likewise, the power dissipated in an electrical element of a circuit is the product of the current flowing through the element and of the voltage across the element.

In an experiment to determine the density of a substance the following results were
obtained. Use the results to plot a graph of mass against volume.
Mass (g) 10 20 30 40 50 60 70 80 90
Volume (cm 3 ) 0.5 1.0 1.4 2.0 2.2 2.6 3.0 3.6 4.5

a) Find the gradient of the graph.
b) What does the gradient represent?
c) What is the mass when the volume is 1.5cm 3 ?
d) What is the volume when the mass is 65g?

Answers

Answer:

a) Gradient = rise/run = mass/volume

since the graph is mass against volume we know mass is on the y-axis and volume is on the x-axis

in physics it’s best to use a larger part of the graph to find the gradient, so imma use the biggest values.

90/4.5 = 20

(additional note: sometimes you may get a different gradient. For example, when using 30 and 1.4 you get ≈21 this is an anomalous result since ita gradient differs; a mass against volume graph is supposed to be linear)

b) gradient represents density (p) since gradient is = mass/volume. And density also = mass/volume

For c and d just plot the points and you’ll be able to read from the graph to get the values.

I got this graph (the image)

but you’ll be able to interpret better when ‘you’ draw it (so try plotting it)

exoplanets are difficult to detect because they are:

Answers

Explanation:

Exoplanets are very hard to see directly with telescopes. They are hidden by the bright glare of the stars they orbit. So, astronomers use other ways to detect and study these distant planets.

Exoplanets are difficult to detect because they are a star 'wobbles' as it orbits the center of mass, changing the wavelength of light it emits.

which forces have physicists shown to be the same force under conditions of very high temperature, as confirmed by experiments in particle accelerators?

Answers

Answer:

the electromagnetic and weak forces

Explanation:

PLS, NO SPAM!!

How can athletes benefit from feedback given using the feedback sandwich technique?

1) by using observation and recommendation, a coach can see what is needed and suggest a plan to athletes for training and practice

2) by using observation and recommendation, athletes can see what they are doing wrong and use praise from a coach to feel more accomplished

3) by using praise and constructive criticism, athletes can use what they feel to make changes to their training

4) by using praise and constructive criticism, athletes can grow and improve through feedback that is presented positively

Answers

Answer:

The key benefits to this is the athlete thinks and reflects for themselves which is a vital part of the Learning Styles Model. This technique is most useful for more experienced athletes who like to have involvement and their own opinions about their performance.

Explanation:

How is the input energy carried to the light bulb's energy stores?

Answers

Answer:

the electric energy travels through the plug or wire or whatever is connecting the energy source to the lightbulb, which conducts electricity, and to the light bulb. the electric energy is transfered into light energy and thermal energy

Explanation:

i hope i understood this question and answered it correctly XD

i have science map and i dont know what ro answer please help me asap

Answers

Answer:

C

Explanation:

The correct answer is C because it puts equivalent measurements in the equivalent cup size. Both cups in answer C are the same measurement: 200 mL. The water in both cups is also the same measurement: 100 mL of 70 degrees Celsius. This is important because equivalent measurements for everything mean the experiment will be fair, equal, and accurate. If the measurements were not equal to each other, your experiment would not be as accurate.

what are the advantages of atmospheric pressure?​

Answers

Answer:

it effects the amount of gas that dissolve in water

Which of the following is a defense technique to protect computers from incoming risks? *

Answers

Answer:

having a secure firewall

Explanation:

A firewall validates access by assessing this incoming traffic for any price malicious like hackers and malware that would infect your computer.

newtons 2nd law of the law of…

Answers

Newtons 2nd law of motion

a person sits on a freely spinning lab stool that has no friction in its axle. when this person extends her arms,

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Hi there!

[tex]\boxed{\text{Her angular velocity decreases.}}[/tex]

Recall the conservation of angular momentum:

[tex]L_i = L_f\\\\I_iw_i = I_fw_f[/tex]

When this person extends her arms, her moment of inertia increases.

According to the conservation of angular momentum, if the moment of inertia increases, the angular velocity must DECREASE.

for rogue waves to form so often, they must follow a non linear system, instead of the linear constructive interference system scientists once thought it was to explain these waves. What does it mean to be a non linear equation?

Answers

Rogue waves are unpredictable and sudden waves that appear as surface waves and that have the ability to make ships capsize. For a wave to be a non-linear equation it means that it is unpredictable. What is expected does not actually happen. The resulting wave is often chaotic in nature.

In mathematics, a non-linear equation is one in which the input does not equal the output. This makes it more difficult to predict the outcome of variables.

Also, a linear constructive interference system is one in which the meeting of two waves causes an amplification in which the resulting wave is equal to the sum of the individual waves.

So, when rogue waves are said to be non-linear, it means that the resulting wave is not equal to the individual waves that formed it. They are chaotic and unpredictable.

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In which of the cases below is friction most helpful?

A.

between a moving box and a ramp

B.

between car tires and a road

C.

between a person and a playground slide

D.

between ice skates and an ice rink

Answers

Answer:

between car tires and a road

Explanation:

SOMEONE HELP PLS I WILL MARK CORRECT ANSWER BRAINLYEST ANSWER FAST PLEASE!!!!!

Answers

Answer:

C

Explanation:

The answer is C the two objects can be charged by induction and repelled by induction
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