what is the correct answer?

Answer:

m = 35 g = 0.035 kg

Explanation:

The amount of heat required by a specific mass of wax to be melted at its melting point can be given by the following formula:

[tex]Q = mL[/tex]

where,

Q = Heat Supplied by the Heater = 7700 J

m = mass of wax melted = ?

L = Latent Heat of Fusion of Wax = 220 J/g

Therefore,

[tex]7700\ J = m(220\ J/g)\\m = \frac{7700\ J}{220\ J/g}\\\\[/tex]

m = 35 g = 0.035 kg

Answer:

The strength of the gravitational force between two objects depends on two factors, mass and distance. the force of gravity the masses exert on each other. If one of the masses is doubled, the force of gravity between the objects is doubled. increases, the force of gravity decreases

Newton's first and second laws of motion both do, but I think the one you're looking for is: The First Law of Motion.  That description is a little more direct.

It says that if an object is not acted on by a net external force, then it continues in "constant, uniform motion".

Answer:

25.021 sec

Explanation:

v=d/t

-2.33= - 58.3/t

t= - 58.3/-2.33

t=25.021 sec

Answer:

A) a nerve cells long extensions enable it to transmit electrical impulses from one body part to another

B) the sheet like organization of epithelial cells enables them to protect underlying cells

C) the alignment of contractile proteins within muscle cells enables them to contract, pulling closer together the structures to which they attach

Explanation:

Answer:

This process is known as static electricity

Explanation:

When balloon is rubbed on the wool , a negative charge is usually formed. When the balloon is then held over—but not touching—some bits of paper, some of the bits jump up to the balloon. The bits which jump up to the balloon are positive charged and we know that unlike charges attract.

This process explains static electricity which is when the charges on a material are not in a balanced state.

Answer:

[tex] 3.278 \times {10}^{6} [/tex]

Answer:

C

Explanation:

b is 55 miles per hour south  or 55mph[South]

the important part to understand is that velocity is a vector meaning it also has to have a direction, in this case south. That is why a (2m/s) is not a velocity, however 2m/s is a speed.

Answer:

The magnitude and direction of the earth's magnetic field is between the range of 0.25 to 0.65 Gauss considering the angle of the earth's north pole is eleven degrees.

Explanation:

The magnetic field or force of the earth is attributed to a dynamo effect but the electric charges are not constant. The origin of the field is believed to be from the molten metallic core and the earth's rotation.

The Force of the magnetic field is a function of the velocity or speed 'v' of the electric charges 'q' and the field itself 'B' at an angle of sin∅. That is,

F = vqBsin∅

Take east to be the positive direction. Then the resultant force from adding F₁ and F₂ is

F₁ + F₂ = (-45 N) + 63 N = 18 N

which is positive, so it's directed east.

To this we add a third force F₃ such that the resultant is 12 N pointing west, making it negative, so that

18 N + F₃ = -12 N

F₃ = -30 N

So F₃ has a magnitude of 30 N and points west.

Answer:

The two solids in the right boxes

Explanation:

The two solids in the right boxes will most likely have the lowest boiling point and this can be inferred from their molecular configuration.

The ball accelerates from rest to 75.0 m/s in a matter of 0.020 s, so the drive applies an (average) acceleration of

a = (75.0 m/s - 0) / (0.020 s) = 3750 m/s²

Assuming this acceleration was constant, then the net force F on the ball is

F = (0.050 kg) (3750 m/s²) = 187.5 N ≈ 190 N

Explanation:

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Answer:

The value is [tex]m_2 = 2.46 \ kg[/tex]

Explanation:

From the question we are told that

    The volume of the tank  is  [tex]V = 0.57 \ m^3[/tex]

    The mass of the Argon it contains is  [tex]m = 4 \ kg[/tex]

     The initial pressure on of the gas is  [tex]P_1 = 450 kPa = 450 *10^{3} \ Pa[/tex]

     The initial  temperature is  [tex]T_1 = 30^oC = 30 + 273 = 303 \ K[/tex]

     The  new pressure inside the tank is  [tex]P_2 = 200 \ kPa = 200 *10^{3} \ Pa[/tex]

Gnerally given that the  Argon remaining inside the tank has undergone a reversible, adiabatic process, then the final temperature of the Argon gas is mathematically represented as

      [tex]T_2 = T_1 * [\frac{P_2}{P_1} ]^{ \frac{(k - 1 )}{k} }[/tex]

Here k is the specific heat ratio of Argon with value [tex]k = 1.667[/tex]

So

         [tex]T_2 = 303 * [\frac{200}{450} ]^{ \frac{(1.667- 1 )}{1.667} }[/tex]

=>      [tex]T_2 = 219 \ K[/tex]

Generally from the ideal gas equation

        [tex]PV = mRT_2[/tex]

 So

      [tex]\frac{P_1V}{P_2V} =\frac{ m_1 * R * T_1 }{ m_2 * R * T_2}[/tex]

Here R is the gas constant with value  [tex]R = 8.314 \J \ K^{-1}\ mol^{-1}[/tex]

=>    [tex]m_2 = \frac{P_2 * T_1 }{ P_1 * T_2 } * m_1[/tex]

=>    [tex]m_2 = \frac{200 * 303 }{ 450 * 219 } * 4[/tex]

=>    [tex]m_2 = 2.46 \ kg[/tex]

Answer:

Endocytosis and exocytosis are both forms of active transport. Endocytosis is where materials enter the cell and exocytosis is where materials exit the cell.

Answer:

Explanation:

The most common type of igneous rock making up the Hawaiian island chain is Mafic rock. Furthermore, the most common type of Mafic rock is basalt.

Answer:

Extrusive ‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎

Answer: Sad y’all have holiday homework

The International System of Units is the modern form of the metric system. It is the only system of measurement with an official status in nearly every country in the world.

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Answer:

The amount of power will be increased.

Explanation:

If the work remains constant but the time is reduced the power increases. Since power is defined as the relationship between work overtime. By means of the following equation, we can see this relationship.

[tex]P=W/t[/tex]

where:

P = power [Watts]

W = work [J] (units of joules)

t = time [s]

Let's assume with an example the above written.

If we have an electric motor that exerts a work of 950 [J], and the time used is 5 [s], the power is:

[tex]P = 950/5\\P = 190 [W][/tex]

Now if we want to accelerate the work done and use 2 seconds for the time, we will have:

[tex]P=950/2\\P=475 [W][/tex]

We want to see how maintaining the work constant but reducing the time in which it occurs affects the power. We will see that the power increases.

We define power as the amount of work done per unit of time.

So we can compute power as the quotient between the work done and the time in which it is done.

So, if we reduce the time in which the work is done, then the denominator is smaller, thus, the power will be larger.

This means that maintaining the work constant, and reducing the time in which it is done, increases the amount of power exerted.

If you want to learn more, you can read:

https://brainly.com/question/3854047

Answer:

P = 45 [kW]

Explanation:

We must find the difference in kinetic energy during the 20 seconds.

[tex]D_{kE}=2.5-1.6\\D_{kE}=0.9[MJ][/tex]

Power is defined as the relationship between energy over time.

[tex]P=D_{kE}/t\\P=0.9/20\\P=0.045[MW] or 45 [kW][/tex]

Answer:

-1/6 im sure to this answer

Explanation:

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Answer:

-1/6

Explanation:

pick her as the brainliest

Answer:

Newton is the SI unit of force

Explanation:

A force of 1 Newton is said to be applied when an object of 1kg mass is transferred into motion at 1m/s.

The Newton is the force that accelerates 1 kilogram of mass at the rate of 1 meter per second^2.

In SI base units, 1N = 1 kg-m/s^2 .

Answer:

????

Explanation:

was their supposed to be a picture?

Answer: All forms of distraction.

Answer:

t = 0.75 seconds

Explanation:

Given that,

The initial speed of a ball, u = 7.5 m/s

We need to find the time taken by the ball to reach the maximum height. Let t is the time taken.

At maximum height, its final speed, v = 0 and it will move under the action of gravity.

Using the equation of motion to find t.

[tex]v=u+at[/tex]

Use a = -g

[tex]v=u-gt\\\\t=\dfrac{u}{g}\\\\t=\dfrac{7.5}{10}\\\\t=0.75\ s[/tex]

Hence, the ball will take 0.75 seconds to reach the maximum height.

Explanation:

Molecular motion is defined as the movement of constituent particles or molecules in a certain direction. The molecular motions are affected by heat and temperature. This is because the temperature is the measurement of the average kinetic energy of the molecules and represents the motion of molecules.

Answer:

Answer:

sources of energy

Answer:

energy

Explanation:

hope this is the right answer

Answer:

The smallest part of the elements which contains matters in them are atoms :)