What does the law of conservation of energy state about both sides of the chemical reaction

Answer:

Mercury

Explanation:

Mercury streches when it is hot so that is why it goes up when the temperature is higher

Answer:

C

Explanation:

the electric field point radically away from the charge

Answer:

the answer is b

Explanation:

if it was equal they would move away from each other

Answer:

The acceleration is found as:

a = 1000 km/h²

Explanation:

Initial speed of the plane = 450 km/h

Final speed of the plane = 750 km/h

Time taken = 0.3 h

Acceleration can be defined as the change of speed of the object divided by the time taken to bring that change

Acceleration is given as:

[tex]a=\frac{v_f-v_i}{t}[/tex]

where v(f) = 750 km/h , v(i) = 450 km/h , t = 0.3 h

Substitute the values in the equation of acceleration

[tex]a= \frac{750-450}{0.3}\\a=\frac{300}{0.3}\\a=1000 km/h^2[/tex]

This is the found result

Answer: Concave mirror and convex lens

Explanation: A spherical mirror and a thin spherical lens have each a focal length of +10cm, this means that distance of any object from the mirror is +10 metres.

While for the lens, the distance of any object to the other side of the lens is +10 metres. Therefore, the mirror is concave mirror and the lens is a convex lens.

Answer:

A on Edge 5.16 x 10^15 N

Explanation:

The gravitational force between Mars and Phobos is 5.16*10^15 N.

Using the formula

F = G m1 m2/ r^2

  = 6.67*10^-11*6.42*10^23*1.06*10^16/(9378)^2

  = 45.39*10^28/87946884

  = 5.16 * 10^15 N

"The force of attraction on a body by earth is called gravitational force." Example : The leaves and fruits fall from a tree downwards towards the ground, water in a river flows down streams, a ball thrown up goes to a height and then returns back on ground are some examples of motion due to gravitational force.

"Phobos is the larger of Mars' two moons and is 17 x 14 x 11 miles (27 by 22 by 18 kilometers) in diameter. It orbits Mars three times a day, and is so close to the planet's surface that in some locations on Mars it cannot always be seen."

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Answer: the answer is D its in the book If u have it

Explanation:

Answer: C

Explanation: I dont realy know what this means. but it will not increase because your not getting closer to earths center of gravity and not decreasing because your not high enough in the atmosphere.

Answer:

Liquids take on the shape of their container because they contain particles that can slide past each other. Particles in a solid,

Explanation:

Answer: Liquids take on the shape of their container because they contain particles that can slide past each other.

Answer: I think 1 is 300 metres per second.

Explanation: wave speed= wave length x wave frequency

wave speed = 3 x 100

wave speed is 300 m/s

Answer:

The correct option is;

D) Both objects exert the same magnitude of force on each other due to Newton's 3rd law

Explanation:

Newton's third law of motion states that for every action there is an equal and opposite reaction

Since the bowling ball is rolled down the alley while the pin is displaced at such a speed that it flew, we have that the velocity of the rolling ball, v₁ is less than the velocity of the flying pin v₂

Therefore, whereby force = Rate of change of momentum produced we have;

The change of momentum of the ball = m₁×(v₁ - v₁ₐ)

The change of momentum of the pin = m₂×(0 - v₂)

Hence since the pin change in movement (flight) was more suddenly than the slowing down of the ball, the action of the rolling ball is equal to the reaction of the flying pin.

Answer:

Wavelength, [tex]\lambda=3.64\times 10^{-10}\ m[/tex]

Explanation:

We have,

Velocity an electron is [tex]2\times 10^6\ m/s[/tex]

Mass of an electron is [tex]9.1\times 10^{-31}\ kg[/tex]

It is required to find the wavelength of electron. The De-Broglie wavelength of an electron is given by :

[tex]\lambda=\dfrac{h}{mv}[/tex]

h is Planck's constant

[tex]\lambda=\dfrac{6.63\times 10^{-34}}{9.1\times 10^{-31}\times 2\times 10^6}\\\\\lambda=3.64\times 10^{-10}\ m[/tex]

So, the wavelength of an electron is [tex]3.64\times 10^{-10}\ m[/tex].

Answer:

A large force will produce more acceleration than a small force acting on the same object.

Answer:

b) gains electrons

Explanation:

When transferring electric charge, an object becomes negative when it gains electrons

Answer:

attract is the answer.

Answer:

It attracts

Explanation:

It attracts the object

Answer:

It is B or D, but I may be leaning a little more towards D.

Explanation:

Answer:

Protons = 28

Neutrons = 42

Explanation:

Alpha decay is one of radioactive decay in which the atomic nuclei can be illustrated by the emission or loss of helium particles of mass number 4 and proton number of 2

Because mass number is the sum of protons and neutrons, If a (hypothetical) atom with 30 protons and 44 neutrons undergoes alpha decay, 28 protons will be left in the nucleus and 42 neutrons will be left in the nucleus.

Answer:

Explanation:

Speed is defined as the change in distance covered by a body with respect to time while velocity the change in displacement of a body with respect to time. Speed is a scalar quantity since it does not specifies direction while velocity is a vector quantity because it specifies both magnitude and direction.

Speed can only be equal to the velocity if it also specifies direction.

Based on the definition above, it can be concluded that speed is the change in distance over time and velocity is speed plus direction.

Answer:

Speed is the change in distance over time; velocity is speed plus direction.

Explanation:

I did it and got the test right

The statement is a law because it accurately describes EVERY observation. No contradiction has ever been observed that would disprove it, or even cast doubt on it.  

(Wellll ... at least, no contradiction that wasn't immediately and easily explainable, like dropping a helium balloon, or a sheet of paper in a high wind.)

The statement is legal because it accurately describes all that is seen. No controversy has ever arisen to disprove it or cause it to doubt.

The force of gravity is the force that the planet or another body of gravity absorbs. Gravity holds all the planets in orbit around the sun.

The greater the size of the two objects and the shorter the distance between them, the stronger the gravitational force. We also know that gravity can work in a complex system with several components.

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Answer:

0.46 g/mL

Explanation:

Density can be found using the following formula.

[tex]d=\frac{m}{v}[/tex]

where d is density, m is mass, and v is volume.

We know that the object has a mass of 5.52 grams and a volume of 12 milliliters.

m=5.52 g

v=12 mL

Substitute these values into the formula.

[tex]d=\frac{5.52 g}{12 mL}[/tex]

Divide 5.52 by 12

5.52/12=0.46

d=0.46 g/mL

The density of the object is 0.46 g/mL, and option C is correct.

Answer:

The correct answer will be "1/16".

Explanation:

The force or distance between two substances in charge seems to be inversely proportional to the square of the size of the particles.  

The exerted force between "S" and "q" will be:

⇒  [tex]Fsq=\frac{{Q}'}{Q} 1^2[/tex] ...(equation 1)

The exerted force between "S" and "p" will be:

⇒  [tex]Fsp=\frac{{Q}'}{Q} 4^2[/tex] ...(equation 2)

Now,

On the comparison of "equation 1" and "equation 2", we get

⇒  [tex]\frac{1}{16}[/tex]

Answer:

decrease their prices

Explanation:

If we see demand curve then we can observe that demand for good decreases when price increases and demand for good increases when price decreases.

We also know intuitively that customer are price sensitive. That is their buying behavior changes with price of goods, Consumers prefer lower priced good.

So, if business owners want to increase demand for their goods and services

they should decrease their prices.

Answer: 757m/s

Explanation:

Given the following :

Mole of neon gas = 1.00 mol

Temperature = 465k

Mass = 0.0202kg

Using the ideal gas equation. For calculating the average kinetic energy molecule :

0.5(mv^2) = 3/2 nRt

Where ;

M = mass, V = volume. R = gas constant(8.31 jK-1 mol-1, t = temperature in Kelvin, n = number of moles

Plugging our values

0.5(0.0202 × v^2) = 3/2 (1 × 8.31 × 465)

0.0101 v^2 = 5796.225

v^2 = 5796.225 / 0.0101

v^2 = 573883.66

v = √573883.66

v = 757.55109m/s

v = 757m/s

Answer:

6 m/s^{2}

Explanation:

The formula for force is

F = mass x acceleration

F = 12 N

mass = 2 kg

So, you can change the formula to solve for acceleration.

acceleration = F / mass

a = 12 N / 12 kg

a = 6 m/s^{2}

Answer:

half of the moon

Explanation:

cause your seeing the front of it

Answer:

The light side of the moon so only half

Explanation:

Answer:

Waves transfer energy, not matter

Explanation:

Answer:

Upwards direction

Explanation:

The buoyancy force is caused by the pressure exerted by the fluid in which an object is immersed. The buoyancy force always points upwards because the pressure of a fluid increases with depth.

Answer:

Upwards direction

Explanation:

Answer:

(a) The density of the object is 316/343 × the density of the oil

(b) The fraction of oil displaced after immersing the object is 0.461 of the oil volume

Explanation:

(a) The volume, V of a cone of height, h and base diameter, D = 2×r is given by the following equation;

[tex]V = \dfrac{\pi r^{2} h}{3}[/tex]

The volume of the object is therefore;

[tex]\dfrac{\pi \times 4^{2} \times 14}{3} = 74\tfrac{2}{3}\pi \, cm^3[/tex]

Where 6 cm is above the oil level we have;

[tex]\dfrac{\pi \times \left (6 \times \dfrac{4}{14} \right )^{2} \times 6}{3} = 5\tfrac{43}{49}\pi \, cm^3[/tex] above the oil level

Therefore, volume of the oil displaced = [tex]68\tfrac{116}{147}\pi[/tex] cm³ = 216.11 cm³

The density of the object is thus;

[tex]\dfrac{68\tfrac{116}{147}\pi}{ 74\tfrac{2}{3}\pi} \times Density \ of \ the \ oil = \dfrac{316}{343} \right ) \times Density \ of \ the \ oil[/tex]

The density of the object = 316/343 × the density of the oil.

(b) The volume of the oil = 2 × Volume of the object = [tex]2 \times 74\tfrac{2}{3}\pi \, cm^3 = 149\tfrac{1}{3}\pi \, cm^3[/tex]

The fraction of the volume displaced, x, after immersing the object is given as follows;

[tex]x = \dfrac{68\tfrac{116}{147}\pi}{ 149\tfrac{1}{3}\pi} = \dfrac{158}{343} = 0.461[/tex]

The fraction of oil displaced after immersing the object = 0.461 of the volume of the oil

Answer:

Ingrid is correct. The clay appears red because it is a type of matter.

Explanation:

Explanation: It is A because it only shows red because it only reflects red. If it let any other color pass through it then it could reflect any color.