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[tex]\displaystyle U_s = 0.6 \ J[/tex]

Math

Pre-Algebra

Order of Operations: BPEMDAS

Physics

Energy

Elastic Potential Energy: [tex]\displaystyle U_s = \frac{1}{2} k \triangle x^2[/tex]

Step 1: Define

k  = 7.50 N/m

Δx = 0.40 m

Step 2: Find Potential Energy

nope

Explanation:

no i haven't sorry

Answer:

(97°F − 32) × 5/9 = 36.111°C

Explanation:Hope this helped

Answer:

the comb is taking electrons from the hair

Explanation:

As given,

A hard rubber comb acquires a negative electric charge.

Before rubbing,

The comb and the hair are electrically neutral

So, when we rub the comb with the hair , the electrons are transferred to the comb and the hair losses its negative charge and ended up with the positive charge.

So,

The correct option is - the comb is taking electrons from the hair

Answer:

pretty sure its B if it isnt im so so sorry

Explanation:

Answer:

Do you want the independent or dependent? Independent is the Car and the dependent is the meters traveled.

Explanation:

Answer:

sample answer

In this situation, elevation is dependent on time. So, the dependent variable is elevation in feet.

Explanation:

Given :

The height of the observation deck of the Empire State Building is 380 m.

A penny is dropped from this height.

To Find :

How fast would it be going when it struck the ground.

Solution :

Initial speed, u = 0 m/s.

We know, speed of object free falling is given by :

[tex]v^2 - u^2 = 2gh\\\\v = \sqrt{2gh}[/tex]

Here, g = 9.8 m/s² = acceleration due to gravity.

Putting all values in above equation, we get :

[tex]v = \sqrt{2\times 9.8\times 380}\ m/s\\\\v = 86.30\ m/s[/tex]

Hence, this is the required solution.

Answer:

gravitational potential energy.

Explanation:

Gravitational potential energy (GPE) can be defined as an energy possessed by an object or body due to its position above the earth surface.

Mathematically, gravitational potential energy is given by the formula;

[tex] G.P.E = mgh[/tex]

Where,

G.P.E represents gravitational potential energy measured in Joules.

m represents the mass of an object.

g represents acceleration due to gravity measured in meters per seconds square.

h represents the height measured in meters.

This ultimately implies that, anytime there is height, the object must have gravitational potential energy.

Hence, an object possesses gravitational potential energy due to its height (position) and the earth's gravitational force.

Answer:

[tex]X=8.44m[/tex]

Explanation:

From the question we are told that

Distance b/w A&B [tex]x=4.80m[/tex]

Frequency [tex]f=134Hz[/tex]

Sound speed [tex]v=343m/s[/tex]

Generally the equation for wavelength is mathematically given as

[tex]\lambda=v/f[/tex]

[tex]\lambda/2=1/2*v/f[/tex]

[tex]\lambda/2=1/2*\frac{343}{135}[/tex]

[tex]\lambda/2=1.27037037[/tex]

Generally the destructive interference X is mathematically given by

[tex]\sqrt{4.8^2 +X^2} -X=1.27037037\\[/tex]

[tex]23.04+BC^2=X^2+1.613+2.54*X[/tex]

Therefore the destructive interference is

[tex]X=8.44m[/tex]

Answer:

your acceleration is 6 m/s²

Explanation:

Given;

initial velocity, u = 0

initial time, t₀ = 0

final velocity, v = 30 m/s

final time, t = 5 s

The acceleration of is calculated as follows;

[tex]a = \frac{v-u}{t_1-t_0} \\\\a = \frac{30-0}{5-0} \\\\a =\frac{30}{5} \\\\a = 6 \ m/s^2[/tex]

Therefore, your acceleration is 6 m/s²

Answer:

K = 4.64 10⁻¹⁵ J

Explanation:

For this exercise we can use conservation of energy

starting point. Next to the negative plate

           Em₀ = U = e V

final point. Right when you hit the positive plate

           Emf = K = ½ m v²

energy is conserved

           Em₀ = Em_f

           e V = K

The electric potential is related to the electric field

          V = - Ed

we substitute

          -e E d = K

let's calculate

          K = -1.6 10⁻¹⁹ (-2.9 10⁶) 1.0 10⁻²

          K = 4.64 10⁻¹⁵ J

Answer:

the mantel

Explanation:

the asthenosphere is the part of the mantle that flows and moves the plates of the earth. the mantle is the layer located directly under the sima. it is the largest layer of the earth, 1800 miles thick.

hope this helps :) have a nice day !!

Answer:

they push off the wall with a force greater than the wall

Explanation:

The game of parkour involves moving from one point to another and performing several skills which includes flips, especially in a difficult environment.

To change directions, the person must exert a significant force on the wall.

When the person leaps on the wall, it means the person moves or jumps quickly on the wall.

While this is being carried out, the concept of force must be applied.

If the force that acts on a stationary object is smaller than the required force to move the object, the object's position remains unchanged.

This means that for the person's direction to change, the person must exact a great force (or a significant force) enough to cause a change in direction.

Read more about force at:

https://brainly.com/question/19734564

Answer:

OK id k the names of everything but the quantity would be around 2.22222222222222222222222222222222222222222222222222222222222222222222222222222 ok?

Explanation:

Answer:

The cliff is 12.71m tall.

Explanation:

Why?

Before solving the problem, we must remember that the phone was dropped, it means that there is no initial velocity, also, the acceleration acting on the phone is the acceleration due to gravity.

So, to find how tall is the cliff, we can use the following equations:

\begin{gathered}y=y_o+v_o*t-\frac{1}{2}g*t^{2}\\\\v_f=v_o+g*t\end{gathered}y=yo+vo∗t−21g∗t2vf=vo+g∗t

\begin{gathered}t=\frac{v_f}{g} \\\\t=\frac{-15.75\frac{m}{s}}{-9.81\frac{m}{s^{2}}}=1.61s\end{gathered}t=gvft=−9.81s2m−15.75sm=1.61s

Now that we know the time, we can calculate how tall is the cliff:

\begin{gathered}y=y_o+v_o*t+\frac{1}{2}g*t^{2}\\\\y=0+0*1.61s-\frac{1}{2}*(-9.81\frac{m}{s^{2}})*(1.61s)^{2}\\\\y=12.71m\end{gathered}y=yo+vo∗t+21g∗t2y=0+0∗1.61s−21∗(−9.81s2m)∗(1.61s)2y=12.71m

Answer:2900

Explanation:

I think

Answer:5kgs

Explanation:

Answer:

Every 11 years The solar cycle is the cycle that the Sun's magnetic field goes through approximately every 11 years.

Explanation:

Our Sun is a Large ball of electrically-charged hot gas. This charged gas moves, generating a powerful magnetic field. The Sun's magnetic field goes through a cycle, called the solar cycle.

Every 11 years or so, the Sun's magnetic field completely flips. This means that the Sun's north and south poles switch places. Then it takes about another 11 years for the Sun’s north and south poles to flip back again.

The solar cycle affects activity on the surface of the Sun, such as sunspots which are caused by the Sun's magnetic fields. As the magnetic fields change, so does the amount of activity on the Sun's surface.

Hope this helps!

Brain-List?

Answer:

True

Explanation:

If an object is at rest it will stay at rest unless a force acts on it.

Answer:

C. LiF, CaCl2, MgO

Explanation:

Ionic compound: It is that compound which consist of negative and position ions and held together by electrostatic force of attraction.

The ionic compound is neutral.

The ionic compound formed between metal and non-metal.

Covalent compound: It is that compound in which sharing of electrons between two atoms occur.

A.[tex]CaCl_2,H_2O,LiF[/tex]

H2O is not ionic compound. It is polar covalent.

Therefore, it does not contain only ionic compounds.

B.CO2,K2O,P4O10

CO2 and P4O10 are not ionic .It is covalent.

Therefore, it does not contain only ionic compounds.

C. LiF,CaCl2 ,MgO

All compounds are ionic because in given compounds one ion is negative  and one is metal (positive).

Therefore, it contains only ionic compounds.

D.NO2,MgO,CuCl2

NO2 is not ionic.

Therefore, it does not contain only ionic compounds.

Option C is correct.

Answer:

When you rub a balloon on your head, electrons move from the atoms and molecules in your hair onto the balloon. Electrons have a negative charge, so the balloon becomes negatively charged, and your hair is left with a positive charge.

Explanation:

Answer: His third law states that for every action (force) in nature there is an equal and opposite reaction. In other words, if object A exerts a force on object B, then object B also exerts an equal and opposite force on object A.

Explanation:

Explanation:

According to Newton's third law of motion, whenever two objects interact, they exert equal and opposite forces on each other. This is often worded as 'every action has an equal and opposite reaction'.

Answer:

Hurricanes conditions occur when warm, moist air evaporates from the surface of the ocean and rises quickly. This warm air meets cool air in the higher elevations that causes condensation of the warm air vapor.

Explanation:

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I dont think hurricanes have any fronts

Explanation:

A hurricane usually contains an eye with sinking air, whereas mid-latitude cyclones have a center of low pressure with rising air. Hurricanes have their strongest winds around the eye of the hurricane where mid-latitude cyclones have their strongest winds aloft, in the jet stream.

Answer:

All  are  not true.

Explanation:

Sound needs medium to travel.

sound speed is fastest in solids.

Answer:

temperature is the degree of heat in a item or object and is measured by a thermometer.

Explanation:

Answer:

Q = 0.83 μC

Explanation:

      [tex]E = \frac{Q*A}{\epsilon_{0} } (1)[/tex]

      [tex]Q_{max} = E_{max} * \pi *\frac{d^{2}}{4} *\epsilon_{0} = 3e6N/C*\pi *\frac{(0.2m)^{2} }{4} * 8.85e-12C2/Nm2 = 0.83\mu C (2)[/tex]

Answer:

Muhammad Ali Jinnah (Urdu: محمد علی جناح‎; born Mahomedali Jinnahbhai; 25 December 1876 – 11 September 1948) was a barrister, politician and the founder of Pakistan.

Answer:

As Force = Mass × Acceleration. So If mass is constant, the acceleration would also be constant, in presence of a net external constant force!

The required choice is for both the lines are conductor and conductor.

A conductor is something that easily allows current to flow through it. As an example, consider metal or any other metal. An insulator is something that does not allow current to travel through it. Polyurethane is an example.

Here,
Inside each socket are two pairs of metal strips that are engineered to bend and flex but return to their original shape when pressure is released. Each pair of strips is linked to one of your power lines (either hot or ground).

When you insert the wall plug, springy brass fingers hold the plug prongs, allowing you to connect to your home's electrical system.

Thus, the required choice is for both the lines to be conductor and conductor.

Learn more about conductors and insulators here:
https://brainly.com/question/23607405
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