A.

Specific energy

B.

Specific mass

C.

Specific gravity

D.

Specific heat

**Answer:**

The answer is **specific heat.**

**Explanation:**

The amount of energy for 1 gram of a substance to be raised one degree is called specific heat because it involves energy and temperature going up.

Heat is a form of energy, so it is the most appropriate name.

I hope this helps! :)

The **amount **of heat required to increase the temperature of 1 gram of a substance by 1 degree Celsius (°C) is known as specific heat. Since water has a higher specific heat than other **substances**, it requires more energy to raise its temperature. Thus, option **D** is correct.

One gram of a substance's **temperature** can be raised by one degree **Celsius **by applying a certain amount of heat, or specific heat.

Calories or joules per **gram **per Celsius degree are typically used as the units of specific heat. One calorie (or 4.186 joules) per gram per degree Celsius, for instance, is the **specific **heat of water.

Specific heat is the **quantity **of energy required to **raise **a substance's temperature by one degree in order to raise a gram of it.

Therefore, Specific **heat **term is used to describe the amount of energy it takes for 1 gram of a substance to be raised one **degree **in temperature.

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En la etiqueta de un bote de fabada de 350 g, leemos que su aporte energético es de 1630 kj por cada 100 g de producto a) La cantidad de fabada que tiene que comer un hombre si su necesidad energética diaria es 2500 kj para sobrevivir b) El aporte calórico del bote de fabada en calorías

**Answer:**

(a) 153.37 g

(b) 5705 kJ

**Explanation:**

(a) To find the amount of bean needed by a man you first calculate the equivalence in beans to 2500kJ

[tex]2500kJ*\frac{100g}{1630kJ}=153.37\ g[/tex]

Thus, 153.37 g has the energy needed by a man that needs 200kJ per day.

(b) The amount of energy per pot of bean is given by:

[tex]E=350g*\frac{1630kJ}{100g}\\\\E=5705\ kJ[/tex]

Thus, the energy is 5705kJ

In which sound wave application are sound waves absorbed?

Answer: ultrasonic cleaners

Explanation:

To solve this we must be knowing each and every concept related to **sound wave.** Therefore, in **ultrasonic **cleaners, sound waves are absorbed.

A **sound **is a type of energy or a vibration that moves through a material such as air or water. Sound may pass through such a gaseous medium as well. It is anything that is audible. The **velocity **of sound varies depending on the medium.

A **wave **is a medium that transmits energy from one location to another. Waves are classified into three types: transverse waves, longitudinal waves, or **surface **waves.

Transverse **waves **transport the material back and forth in a right angle towards the energy movement. Longitudinal waves transmit energy through compressing then expanding the medium, allowing the energy to travel ahead. In **ultrasonic **cleaners, sound waves are absorbed.

Therefore, in **ultrasonic **cleaners, sound waves are **absorbed**.

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What energy transformations take place in Joule's system?

The gravitational potential energy from the wheel, turns into motion energy.

The Motion energy turns into thermal energy because the water temperature rising.

The Motion energy turns into thermal energy because the water temperature rising.

El dibujo muestra donde se encuentra un caracol en distintos instantes de tiempo.?Podemos afirmar que se trata de un movimiento acelerado?Razona tu respuesta

**Answer:**

if the acceleration is zero the displacements are equal in the same time interval, so we would see the points equally spaced in the diagram

if the acceleration is different from zero in these cases the intervals are different in the same time intervals

**Explanation:**

In a drawing of displacement as a function of time, we can know if in motion it is steely or not, the relationship that describes the motion is

x = v₀ t + ½ a t²

we see that we have two cases:

* if the acceleration is zero the displacements are equal in the same time interval, so we would see the points equally spaced in the diagram

* if the acceleration is different from zero in these cases the intervals are different in the same time intervals. In the case of positive acceleration the points are spaced and in the chaos negative acceleration the points are getting closer to each other

Rafael swings a baseball bat with a force of 25 N. The baseball bat exerts a force of 5 N on the baseball. What is the mechanical advantage of the baseball bat? The mechanical advantage of the baseball bat is

Answer:

0.2

Explanation:

Mechanical Advantage is defined as the ratio of force output with respect to the force input. Thus,

MA = output / input

MA = 5 / 25

MA = 1/5

MA = 0.2

Since this value is less then one. Even though it's tagged a mechanical advantage, in reality it would be mechanical disadvantage.

Therefore, we can say that the mechanical advantage of the baseball bat is 0.2

**Answer:**

0.2

**Explanation:**

Work out the kinetic energy of a 2.5 kg remote-controlled car that is moving at 2 m/s.

Answer: 5 joules

Explanation:

mass=m=2.5kg

Velocity=v=2m/s

Kinetic energy=ke

ke=(m x v x v)/2

ke=(2.5 x 2 x 2)/2

Ke=10/2

Ke=5

Kinetic energy=5 joules

The **kinetic **energy of a **2.5 kg** remote-**controlled **car that is moving at 2 m/s is** 5 Joules**.

The **energy **which an item has as a **function **of motion is **determined** by the **initial** energy. It is described as the **effort **required to **propel **a **material **body from **rest **to the given **velocity**.

It is given that:

Mass of the **remote**-controlled car = 2.5 kg

**Velocity **of the **car **= 2 m/s

As we know,

**Kinetic** energy = k

k = (mv²)/2

As we know,

The **mass **is a **tangible **body's mass is the **amount **of matter it **possesses**. It's also a metric of **inertia **or the resistance to **velocity **when a net force is **exerted**.

m = 2.5 kg

v = 2 m/s

k = (2.5×2²)/2

k = 10/2

k = 5 Joules

Thus, the **kinetic **energy of a **2.5 kg** remote-**controlled **car that is moving at 2 m/s is** 5 Joules**.

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What is true of a match burned in a closed system?

Answer:

The match is made of wood or paper, mainly cellulose, a carbohydrate. When it burns, carbon and hydrogen combine with oxygen in the air and go off into the atmosphere. The match loses mass, but the mass goes somewhere else—in this case, the atmosphere. When a match burns, its mass decreases

Explanation:

PLEASE GIVE ME BRAINLIEST IF NEW IT SHOULD SAY NEAR MY ANSWER MARK AS BRAINLIEST IF NOT YOULL HAVE TO WAIT A DAY AND BRAINLY WILL REMIND YOU

why are the group 17 elements the most reactive of the nonmetal elements a)they are the biggest elements b)they have the fewest electrons c)they are located on the farthest right side of the periodic table d)they require only one electron to fill their outer energy level

**Answer:**

I think the answer is D-they require onky one electron to fill their outer energy level.

What is the formula for velocity???

**Explanation:**

divide the distance by the time it takes to travel that same distance, then add your direction to it.

Or change in displacement divided by change in time.

Gold, quartz, and talc are minerals. Copper and iron are types of ore. What is the difference between minerals and ores?

A mineral is a non-living, solid substance that can be extracted from the ground. Ore is a type of mineral made up of metals.

An ore is non-living and solid with little value unless it occurs in large amounts, in which case it is a mineral.

O A mineral is a valuable form of ore that can be extracted from the ground

O A mineral is a non-living, solid substance made of elements. Ore is a large deposit of one or more valuable minerals in the ground.

**Answer:**

A mineral is a valuable form of ore that can be extracted from the ground

**Explanation:**

Gold, quartz and talc are minerals because they are found in the earth in a valuable form of ore while ores are rocks that contain valuable concentrations of minerals.that can be mined.

An ORE in general term can be said to be a mineral deposit that contains enough Minerals that can be mined in commercial quantities while Minerals are valuable components of an Ore that can be mined ( naturally occurring ) in an ORE.

I’m a freshman, I got a 80% in the first quarter, 85% in the second and 70% in the third. I have a 46% in the fourth and 34 total absences in the class. If I fail, will I fail the class or the entire grade

**Answer:**

you will pass but if your grade become lower and u get more absences you will fail

In an inelastic collision, which of the following statements is always true?

[A] Kinetic energy is conserved in the collision.

[B] Momentum is conserved in the collision.

[C] After the collision, the objects always merge into one.

[D] The collision takes more that 1 second to complete.

Well C is definitely one of the correct answers.

Answer: A

Explanation:

A

How far can you get away from your little brother with a paintball marker if you can travel at 3 m/s and you have 15s before he sees you?

I hate my sister so. Much just need points

How does the current values in and out of the battery compare to the sum of currents going through the light bulbs?

Note: This is for Parallel circuits.

The current values in and out of the battery is going to be equal to the sum of the currents going through the light bulbs. In a parallel circuit, the current is divided as it enters different branches and light bulbs. However, the amount of current leaving the battery is always going to be the same as the amount of current entering the battery. Therefore, while current divides in a parallel circuit, the total amount of current always remains the same.

An ice skater spins at 2.5 rev/s when his arms are extended. He draws his arms in and spins at 10.0 rev/s. By what factor does his moment of inertia change in the process?

**Answer:**

The moment of inertia decreased by a factor of **4**

**Explanation:**

Given;

initial angular velocity of the ice skater, ω₁ = 2.5 rev/s

final angular velocity of the ice skater, ω₂ = 10.0 rev/s

During this process we assume that angular momentum is conserved;

I₁ω₁ = I₂ω₂

Where;

I₁ is the initial moment of inertia

I₂ is the final moment of inertia

[tex]I_2 = \frac{I_1 \omega_1}{\omega_2} = \frac{I_1*2.5}{10} \\\\I_2 = 0.25I_1 = \frac{1}{4}I_1[/tex]

Therefore, the moment of inertia decreased by a factor of **4**

The life cycle of stars may be boiled down into a tug of war, lasting billions of years, between two basic forces. In your own words, describe these forces, and identify which of the two eventually "wins" the battle.

**Answer:**

Stars are very massive stellar objects, which means that they have a very intense force of **gravity**. This is the first of the forces entering this "war".

In addition to that, due to the force of gravity that drives the star to contract, the process known as fusion occurs (the union of atoms of one element that results in another element, hydrogen fuses in stars to produce helium). The fusion created in the high temperatures of the center of the star generates an enormous amount of energy (which causes the stars to shine) and a** force going outward of the star counteracting gravity**, this is the second force in the "war" .

In a stable star these two forces (gravity going inward and the pressure created by the fusion going outward ) are in balance, preventing the star from exploding or collapsing. But eventually the star exhausts its "fuel" (hydrogen atoms) to produce fusion within it (although stars also fuse helium and other heavier elements, but once the hydrogen is finished the star is near its end), which decreases the force outward from the star, making **the force that wins this battle to be the force of gravity**.

When the force of gravity wins, the star collapses on itself and from here, depending on the star's mass, several things can happen, such as the star becoming a white dwarf, a supernova, even a black hole.

The life cycle of stars may be **boiled down** into a** tug of war**, lasting billions of years, between** two basic forces** -

**Stars** are very **massive stellar objects** and remain the **longest in the stage** when it is burning** Hydrogen into Helium.**

Thus,

The life cycle of stars may be **boiled down** into a** tug of war**, lasting billions of years, between** two basic forces** -

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Are carbon compounds rigid and strong

yes, but it takes a lot of energy to break all those iconic bonds .

A CFL bulb has an efficiency of 0.42 and a imput of 14W. what is the output power

I really need help.

**Answer:**

The output power is 5.88 W.

**Explanation:**

We have,

Efficiency of CFL bulb is 0.42

Input power is 14 W

It is required to find the output power. The ratio of output power to the input power is called efficiency. It is given by :

[tex]\eta=\dfrac{P_o}{P_i}[/tex]

[tex]P_o=\eta\times P_i\\\\P_o=0.42\times 14\\\\P_o=5.88\ W[/tex]

So, the output power is 5.88 W.

4. The batteries on electric vehicles are recharged using electricity from either a wall socket or dedicated charging

unit.

A) O True

B) O False

**Answer:**

Hey!

Your answer is **A) TRUE!**

**Explanation:**

The electricity in this instance is called "grid-electricity" because it has come from a generation plant elsewhere instead of recharging the batteries via Kinetic/Potential energy...

The half-life of cobalt-60 is 5.26 years. If 50 grams are left after 15.78 years, how many grams were in the original sample?

**Answer:**

**Explanation:**

Half life = 5.6

no of half life in 15.78 years = 15.78 / 5.26

= 3 .

[tex]N = N_0(\frac{1}{2})^n[/tex]

N₀ is original mass , N is mass after n number of half lives.

Inserting the given data in the equation above

[tex]50 = N_0(\frac{1}{2})^3[/tex]

N₀ = 50 x 2³

= 400 gm .

original sample will contain 400 gms of sample.

Explain why beaches can be considered both erosional and depositional. Remember to write in complete sentences!

**Answer:**

Waves wash against the shore which can lead to erosion. However, the waves also bring in pebbles and sand particles from the ocean, which is an example of deposition.

**Explanation:**

That would be my answer

A metal rod has a length of 123. cm at 200°C. At what temperature will the length be 92.6 cm if the coefficient of linear expansion of the material in the rod is 2.0 x 10-5 °C-1?

**Answer:**

[tex]\theta_{2} = 15400^0 C[/tex]

**Explanation:**

The formula for linear expansivity, [tex]\alpha = \frac{l_{2} - l_{1} }{l_{1} ( \theta_{2} - \theta_{1} )}[/tex]

original length, l₁ = 123 cm = 1.23 m

final length, l₁ = 92.6 cm =0.926 m

original temperature, θ₁ = 200°C

Linear expansivity, α = 2 * 10⁻⁵ °C⁻¹

Putting these values into the formula:

[tex]2 * 10^{-5} = \frac{1.23 - 0.926 }{l_{1} ( \theta_{2} -200 )}\\ \theta_{2} -200 = \frac{0.304}{2 * 10^{-5} } \\\theta_{2} = 15200 + 200\\\theta_{2} = 15400^0 C[/tex]

Jenny and Fred both play a long note on their trombones. A stationary observer hears the sound increasing and decreasing repeatedly in loudness. Which of these must be true?

A.The sound waves from the two trombones have slightly different frequencies.

B. The sound waves from the two trombones have the same frequency.

C. The sound waves from the two trombones have slightly different amplitudes.

D. The sound waves from the two trombones have the same wavelength.

E. The sound waves from the two trombones have slightly different velocities.

**Answer:**

A.The sound waves from the two trombones have slightly different frequencies.

**Explanation:**

This is because, a difference in frequency of waves from two different sources would result in either constructive or destructive interference of the waves. Thereby, causing the observer to hear the sound increasing or decreasing.

**Answer:**

A.The sound waves from the two trombones have slightly different frequencies.

Which phrases describe all the outer planets’ motion? Select two options.

no rotation

fast rotation

slow revolution

opposite revolution

north to south rotation

**Answer:**

Fast rotation

Slow revolution

**Explanation:**

Solar system has 8 planets. 4 inner rocky planets - Mercury, Venus, Earth and Mars and 4 outer gaseous planets - Jupiter, Saturn, Uranus and Neptune. The outer planets have few common features.

They are gaseous. There period of revolution is larger than the inner planets which means that they have slow revolution about the Sun. One day on the outer planets is smaller than the inner planets which means they have fast rotation.

For example, Jupiter has revolves around sun in 11.86 Earth years and rotates about axis in 9.8 Earth hours. Uranus revolves around sun in 84 Earth years and rotates on its axis 17.9 Earth hours.

**Answer:**

Fast rotation

Slow revolution

**Explanation:**

did the test

Two water waves meet at the same point, one having a displacement above equilibrium of 60 cm and the other having a displacement above equilibrium of 80 cm.

**Answer:**

The resultant displacement is **140 cm**

**Explanation:**

say first displacement d₁ is 60 cm

and second displacement d₂ is 80 cm

Resultant displacement = d₁ + d₂

= 60 + 80

= **140 cm**

**Answer:**

**Explanation:**

To solve this problem it will be necessary to apply the interference principle.

Under this principle interference is understood as a phenomenon in which two or more waves overlap to form a resulting wave of greater, lesser or equal amplitude. In this case, if both are at the same point, the result of the total displacement will be the sum of the individual displacements, therefore

[tex]x = \sum h_i\\\\x = 60cm + 80cm\\\\x =140cm[/tex]

Therefore the resulting displacement above equilibrium is 140cma man is trying to move a piano by himself, but it will not move, what force must they overcome to start the piano moving?

**Answer:**

The friction of the piano and the weight

**Explanation:**

How does the temperature of water affect the speed of the sound waves?

**Answer:**

Temperature is also a condition that affects the speed of sound. Heat, like sound, is a form of kinetic energy. Molecules at higher temperatures have more energy, thus they can vibrate faster. Since the molecules vibrate faster, sound waves can travel more quickly.

The baker needs 9 eggs, 6 cups of flour, 3 cups of sugar, and 3 sticks of butter to make a total of 3 cakes.. The baker only has 2 sticks of butter. That means the butter is the ___________ because the baker can only make 2 cakes!

Question 19 options:

Product

Reactant

Limiting reactant

Spontaneous reactant

**Answer: Limiting reactant
**

**Explanation:**

The limiting reactant is a reactant will get completely consumed up in the reaction. This reactant being in low concentration will lead to the formation of limited amount of product.

In the given situation, since the butter cakes are required to be 3 sticks for making 3 cakes but only 2 cakes are available thus the butter stick is the limiting reactant.

A walkman uses four standard 1.5 V batteries. How much resistance is in the circuit if it uses a current of 0.02A? *

Answer:

75ohms

Explanation:

V= IR

V = 1.5volts

I = 0.02A

1.5 = 0.02×R

Making R the subject

R = 1.5/0.02

R = 75ohms

The resistance in the circuit will be 75ohms

which has a greater kinetic energy, a bowling ball that has a mass of 5kg travelling at 6m/s, or a ship that has a mass of 120000kg and is moving at 0.02m/s?

Answer:bowling ball has greater kinetic energy

Explanation:

Kinetic energy of bowling ball:

mass=m=5kg

Velocity=v=6m/s

Kinetic energy =ke

Ke=0.5 x m x v x v

Ke=0.5 x 5 x 6 x 6

Ke=90J

Kinetic energy of ship:

mass=m=120000kg

velocity=v=0.02m/s

Ke=0.5 x m x v x v

Ke=0.5 x 120000 x 0.02 x 0.02

Ke=24J

Th**e bowling ball** has greater **kinetic energy** than the ship.

The** kinetic energy **of an object is the work an object can do by its motion. Kinetic energy is a **scalar quantity** as it does have **magnitude** only.

When **work** is done, **energy** is transferred, and the object moves at a new speed. The energy is** transferred kinetic energy**, which depends on the mass and speed.

The **SI unit of kinetic energy** is **Joule** and the CGS unit of kinetic energy is erg. The expression of **kinetic energy** that is used to calculate it is:

K.E. = (1/2) mv²

The **mass** and the** velocity of the bowling ball** are 5 Kg and 6 m/s respectively.

The kinetic energy of the bowling ball = (1/2) × 5× (6)² = 90 J

The **mass** and the **velocity** of the **ship** are 120000 Kg and 0.02 m/s respectively.

The kinetic energy of the bowling ball = (1/2) × 120000× (0.02)² = 24 J

Therefore, the **kinetic energy **of the bowling ball is greater than the ship.

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