Who ever helps can you help me with some other ones?

Answer:

i think it would be B. Aluminum, Al and D. Boron, B

Explanation:

since they're both in group 13 and they forms a 3+ ion

Answer:

3072J

Explanation:

At all points through her slide, it is important to reiterate that energy is always conserved.

Kinetic energy is the energy due to the motion of a body.

Potential energy is the energy due to the position of a body.

Based on the law of conservation of energy, energy is neither created nor destroyed but simply transformed from one form to another.

 So;

At all points:

           Total energy  = Potential energy + Kinetic energy

Since the initial energy  = 5000J which is the potential energy

This is the total energy within the system as the kinetic energy at this point is 0;

 After a few seconds, the potential energy is 1928J;

  Kinetic energy  = Total energy  - potential energy  = 5000J  - 1928J

  Kinetic energy  = 3072J

The chemical process which requires energy is breaking bond in KOH and HBr. Hence, option C is correct.

The capacity to perform work is known as energy in physics. Potential, kinematic, thermodynamic, electromagnetic, chemical, nuclear, and other types are all possible.

As energy is transferred through one body to another, there is also heat and work. As a result, heat transfer may result in thermal energy, whereas labor done may result in mechanical power.

As per the given reaction in the question,

KOH + HBr - KBr + H20

Here, in this reaction the chemical process which requires the energy is at the time of breaking of bonds in KOH and HBr at that time the energy is required.

Therefore, it is concluded that breaking bonds in KOH and HBr i.e., option C is correct.

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Answer:

noble gases is those group of elements that DO NOT form ions and are found as monatomic atoms in nature .

The only group of elements that DO NOT form ions and are found as monatomic atoms in nature are the: noble gases.

The noble gases are a group of chemical elements with comparable qualities; under normal conditions, they are all odourless, colourless, monatomic gases with very minimal chemical reactivity. Historically, they were also known as inert gases and aerogens. Helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radioactive radon are the six naturally occurring noble gases (Rn).

Oganesson (Og) is a highly radioactive element created synthetically. Although the IUPAC has included oganesson since "group 18" and "noble gas" have been used interchangeably, oganesson may not be appreciably chemically noble and is projected to deviate from the norm and be reactive due to relativistic effects. Its chemistry has not yet been studied due to the single known isotope's relatively brief 0.7 ms half-life.

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Answer:

Online means connected to a network.

Credible means reliable or trustworthy

Cite means to quote from an article or book.

Which terms describe the purpose of antennas on devices that use radio waves?

Answer:

Explanation:

Hope it helps:)

#CarryOnLearning

Answer:

Transmit and receive (A)

Explanation:

On Edge

Answer:

wtfffff

Explanation:

wtffffff

Answer:

[tex]\boxed {\boxed {\sf 15 \ kg*m/s}}[/tex]

Explanation:

Momentum is the product of mass and velocity.

[tex]p=m*v[/tex]

The mass of the ball is 1.5 kilograms and the velocity is 10 meters per second.

[tex]m= 1.5 \ kg \\v= 10 \ m/s[/tex]

Substitute the values into the formula.

[tex]p= 1.5 \ kg* 10 \ m/s[/tex]

Multiply.

[tex]p=15 \ kg*m/s[/tex]

The momentum of the ball is 15 kilogram meters per second.

Answer:

15 kg m/s

Explanation:

[tex]p = mv \: = 1.5 \times 10 = 15 \: kgm {s}^{ - 1} [/tex]

Answer:

volume of cheese=l×b×h=5×6×4=120cm³

density=mass/volume=(467/120)=3.89g/m³

Answer:

75000J

Explanation:

Given parameters:

Force applied on the car  = 1000N

Distance moved  = 75m

Unknown:

Work done  = ?

Solution:

The work done by a body is the force applied to move it through a particular distance.

So;

    Work done  = Force x distance

Therefore;

    Work done  = 1000 x 75  = 75000J

Answer:

5

Explanation:

Because it right

Answer: c

Explanation:

The total distance the ultrasound pulse travelled is, twice the distance of the sea floor

Because it went back and forth

Answer:

8W

Explanation:

Given parameters:

Distance covered  = 20m

Work done  = 120J

Time  = 15s

Unknown:

How much power does the Ox exerts  = ?

Solution:

Power is the rate at which work is being done

  Power  = [tex]\frac{Work done }{time}[/tex]  

 Power exerted by ox  = [tex]\frac{120}{15}[/tex]   = 8W

Answer:

•Helps to maintain va proper pH in the body which supports cell function.

•Carries electrolytes such as sodium and potassium to our muscles.

Answer:

C

Explanation:

false. when you get an xray all the doctors are doing is taking a pic of your bones.

Answer:

stove

Explanation:

The stove is the independent variable in this question as it does not depend on anything like other variables such as pot, water, temperature and of cause pasta.

The pot depends on the stove, the water depends on the pot and stove, the pasta depends on the water and its temperature.

Cheers.  

Answer:

15 m/s^2 The first thing to calculate is the difference between the final and initial velocities. So 180 m/s - 120 m/s = 60 m/s So the plane changed velocity by a total of 60 m/s. Now divide that change in velocity by the amount of time taken to cause that change in velocity, giving 60 m/s / 4.0 s = 15.0 m/s^2 Since you only have 2 significaant figures, round the result to 2 significant figures giving 15 m/s^2

Explanation:

Answer:

51.85m/s

Explanation:

Given parameters:

Mass of ball  = 0.0459kg

Force  = 2380N

Time taken  = 0.001s

Unknown:

Speed of the ball afterwards  = ?

Solution:

To solve this problem, we use Newton's second law of motion:

   F = m x [tex]\frac{v - u}{t}[/tex]  

F is the force

m is the mass

v is the final velocity

u is the initial velocity

t is the time taken

        2380  = 0.0459 x [tex]\frac{v- 0}{0.001}[/tex]  

        0.0459v  = 2.38

                   v = 51.85m/s

Answer:

2.38

Explanation:

F = dp/dt  --> dp = F*dt ---> p = F*t if F is constant over time so

p = 2380N* 0.001 s = 2.38 kg-m/s

Answer:

Explanation:

The puck slides on the ice . Coefficient of sliding friction μ = .026

Limiting frictional force = μ R

R is reaction force of the surface .

R = mg

Friction force = μ mg

deceleration = μ mg / m

= μ g

= .026 x 9.8 = .2548

= 0.26 m /s².

Answer:

Product

Explanation:

The force between two charges is given by :

[tex]F=\dfrac{kq_1q_2}{r^2}[/tex] ...(1)

Where

k is electrostatic constant

q₁ and q₂ are charges

r is the distance between charges

From equation (1), it is clear that the magnitude of the force is directly proportional to the product of charges.

Answer:

m = 0.51[kg]

Explanation:

Potential energy is defined as the product of mass by gravity by height.

[tex]E_{pot}=m*g*h[/tex]

where:

Epot = potential energy = 15 [J]

m = mass [kg]

g = gravity acceleration = 9.8 [m/s²]

h = elevation = 3 [m]

Now replacing:

[tex]E_{pot}=m*g*h\\15=m*9.8*3\\m = 0.51[kg][/tex]

Work = 196 J = 196 kg.m^2.s^-2

[We know that 1J = 1 kg.m^2.s^-2]

Displacement = 2m

Acceleration (g) = 9.8ms^-2

We know that,

W=Fs and F=ma

So, W = (ma)s

=> W = m×a×s

=> 196 kg.m^2.s^-2 = m×9.8ms^-2×2m

=> 196 kg.m^2.s^-2 = m×19.6m^2.s^-2

=> 196 kg.m^2.s^-2 = m×19.6m^2.s^-2

=> (196 kg.m^2.s^-2)/(19.6m^2.s^-2) = m

=> 10kg = m

So, mass = 10kg

Answer:

hgggkwhhsvshwhhwbejshsbehe

Answer:

true!

Explanation:

I am happy to see some THINGS like this!

Answer:

Explanation:

momentum = mv

m = 8 kg

v = 12 m/s

momentum = 8 * 12 = 96 kg m/s