You have a piece of iron with a mass of 63 g and a volume of 9 cm³. What is its density?

A.0.14 g/cm³
B.7 g/cm³
C.54 g/cm³
D.567 g/cm³

A) The mass of 28.76 mL of acetone is approximately 22.7 g.

B) The volume of 6.40 g of acetone is approximately 8.12 mL.

A) To determine the mass of 28.76 mL of acetone, we need to know the density of acetone. The density of acetone is approximately 0.789 g/mL. Therefore, we can calculate the mass as follows:

Mass = Volume * Density

Mass = 28.76 mL * 0.789 g/mL

Performing the calculation:

Mass ≈ 22.67564 g

Rounding the result to the correct number of significant figures, the mass of 28.76 mL of acetone is approximately 22.7 g.

B) To determine the volume of 6.40 g of acetone, we can rearrange the formula:

Volume = Mass / Density

Volume = 6.40 g / 0.789 g/mL

Performing the calculation:

Volume ≈ 8.116 g/mL

Rounding the result to the correct number of significant figures, the volume of 6.40 g of acetone is approximately 8.12 mL.

To know more about mass here

https://brainly.com/question/11954533

#SPJ4

Answer:

electrical energy to mechanical energy.

Explanation:

As compared to Earth, humans have relatively low masses, which results in a very small and negligible gravitational force.

What does gravity mean?

The force of gravity, often known as gravitation, affects every material object in the universe. The force of gravity tends to draw any two objects or particles with nonzero mass toward one another. From subatomic particles to galaxy clusters, gravity affects things of all sizes.

The force of attraction between any two bodies is directly proportional to the product of their masses and is inversely proportional to the square of the distance between them, according to Newton's universal law of gravitation.

To learn more about gravity use link below:

https://brainly.com/question/557206

#SPJ1

False. While there are known long-term effects of radiation exposure, the specific effects on an individual can vary depending on factors such as the type and amount of radiation exposure, age, health status, and genetics.

Some known long-term effects of radiation exposure include an increased risk of cancer, genetic mutations, and damage to organs such as the thyroid and reproductive organs. However, the severity and timing of these effects can vary widely among individuals. Additionally, exposure to radiation can also have immediate effects such as skin burns and radiation sickness. It is important to note that the long-term effects of radiation exposure can be reduced through measures such as limiting exposure time, using protective equipment, and following proper safety protocols.
b. False

Long-term effects of radiation on an individual are not entirely predictable. While it is true that exposure to high levels of radiation can lead to an increased risk of certain health issues such as cancer and genetic mutations, the specific outcome for an individual depends on various factors. These factors include the type and amount of radiation, duration of exposure, age, and individual genetic makeup. Additionally, the latent period between radiation exposure and the onset of health issues can vary significantly, making it challenging to predict the exact long-term effects for a particular individual.

Learn more about health status here:-

https://brainly.com/question/14210656

#SPJ11

No, it is not possible to choose the magnitudes of two forces subjected to the object that do not point in the opposite direction so that the object is in equilibrium.

To counteract each other, the two forces that are operating on it must be acting in the opposing direction. Equilibrium is defined as the condition in which the sum of forces/actions acting on the body is zero. It is a state in which a body experiences no energy transfers. Different types of forces (external and internal most commonly gravity and inter-atomic forces) are experienced by objects.    

You can learn more about equilibrium from the following link;

https://brainly.com/question/28518658

#SPJ4  

The sum of the kinetic and potential energies of particles in an object called mechanical energy.

Mechanical energy is the energy possessed by an object due to its motion or due to its position. This energy is derived from the work done on an object.

It can be in the form of kinetic energy, the energy of motion; or in the form of potential energy, the energy an object has due to its position or shape.

Mechanical energy can be converted between the two forms, and is often converted into other forms, such as electrical energy or thermal energy.

Mechanical energy is used to power machines and devices, and is an important source of energy in the modern world.

Therefore, The sum of the kinetic and potential energies of particles in an object called mechanical energy.

To learn more about mechanical energy

Here: brainly.com/question/24443465

#SPJ4

Answer:

air mass

Explanation:

Remember, the weather of a particular location is often a description of the atmospheric condition of that particular place.

Indeed, the definition of an air mass fits the reporter's description above. As the name implies, a particular air mass would represent the temperature characteristics of a particular area that has a constant or the same temperature and air pressure.

Liquids and gases are called fluids as they do not have the perfect shape of solids. Both the liquids and gases occupy the shape of the container. Though they have certain similarities, liquids, and gases are different from each other.

The molecules of liquids are attracted to each other and form a chemical bonding between them. The molecules are loosely arranged as compared to the solids.

They have a moderate force of attraction to hold the particles. In liquids, the intermolecular distance between the molecules is small because the molecules are closely attracted to each other.

In gas, the molecules move away from each other and the molecules of gas are set to be free. They do not have an intermolecular distance between the molecules. The gas has a low density and is highly compressible.

The intermolecular force in gas molecules is weak because the gas molecules have high mobility. Thus, liquids have high intermolecular force compared with gas and it has low intermolecular distance as compared with gas.

To know more about states of matter:

https://brainly.com/question/29069107

#SPJ1

Answer:

The answer is D

Explanation:

The answer is D because weight has a lot of amount of force.

Answer:

the answer is D

You can light up the bulb without moving any coil by using AC (Alternating Current). This is because AC voltage constantly changes polarity and direction, creating an alternating magnetic field around the coil.

You can manage to light up the bulb without moving any coil using AC current. The reason for this is that the AC current is constantly changing direction, which causes the magnetic field to expand and collapse rapidly.

This, in turn, generates a voltage in the coil, which can be used to light up the bulb without any movement of the coil.A direct current (DC) is a one-way electrical flow from positive to negative.

Since the direction of the flow is fixed, it does not cause any magnetic field to form or collapse rapidly, making it impossible to light up a bulb without moving the coil. As a result, we can only light up a bulb without moving the coil using AC current.

This changing magnetic field induces a voltage in the coil, which can then light up the bulb without the need for any physical movement of the coil.

For more such questions on AC (Alternating Current) , Visit:

https://brainly.com/question/10715323

#SPJ11

The oscillation of a mass at the end of a spring involves the interplay of kinetic and potential energy. As the mass moves away from the equilibrium position, the spring exerts a restoring force that pulls the mass back towards the equilibrium position. At the same time, the mass gains kinetic energy as it moves faster and faster away from the equilibrium position.

The elastic potential energy stored in the spring is given by the formula 1/2 k x^2, where k is the spring constant and x is the displacement of the mass from the equilibrium position. At the point where the elastic potential energy equals the kinetic energy of the mass, we can equate these two quantities:

1/2 k x^2 = 1/2 m v^2

where m is the mass of the object, and v is the velocity of the mass.

Solving for x, we get:

x = sqrt(m v^2 / k)

We can express v in terms of the amplitude a by using the conservation of mechanical energy:

1/2 k a^2 = 1/2 m v^2

Solving for v, we get:

v = sqrt(k/m) a

Substituting this into the earlier equation for x, we get:

x = a sqrt(m/k)

Therefore, the mass is located a distance of sqrt(m/k) away from the equilibrium position when the elastic potential energy equals the kinetic energy. This distance is solely dependent on the properties of the spring (k) and the mass (m), and is independent of the amplitude of oscillation.

Learn more about Elastic Potential Energy :

#SPJ11

Answer:

Principle Archimedes is applied in building a ship and submarine using the manipulating that buoyancy, is controlled the ballast tank system.

Explanation:

Submarine is rather had they focused on main parts of the submarine,he is complex and long process implementation,the most submarine design like submarine stability.

Submarine stability is complete and the fundamental Archimedes principle to arrive the weight of submarine is equal to buoyancy force.

Submarine into the parts and components of ballast tank the sequence in diving and surfacing,there two vital parts:-  flood parts and air vents

flood parts:- at the bottom position and allow water to enter or leave that tank.

air vents:- air vents at the top of the pressure hall,and that they submarine dive.

this time submarine is most modern system is depth is 300 to 450 meters,high pressure  air is 15 bar is tank air valve.

submarine is basic of the effective volume of all the submarine surfaced condition,submarine minus to the free water flood is equal to the fully pressure hull,submarine is the surfaced condition.

Answer:

The difference in distance from the speakers is 5.2 - 3.5 = 1.7 m

The listener would be 1/2 wavelength out of phase with the speakers

1/2 y = 1.7 m    where y is the wavelength

y = 3.4 m       the required wavelength

f = v / y = 340 m/s / 3.4 m = 100 / sec     lowest frequency  

Answer:

100.8

Explanation:

Trust :)

Around 500 N is the size of the wind's horizontal force on the balloon.

According to Newton's second rule of motion, an object's acceleration is a function of both its mass and the net force acting on it. The formula Fnet F n e t =ma serves as the representation for this law.

cos(θ) = horizontal component of tension / tension in rope

cos(θ) = F_h / 1300

F_h = 1300 cos(θ)

sin(θ) = vertical component of tension / tension in rope

sin(θ) = 1200 / 1300

sin(θ) ≈ 0.923

cos(θ) ≈ 0.385

Plugging this into our equation for F_h, we get:

F_h = 1300 cos(θ) ≈ 500 N

To know more about force visit:-

https://brainly.com/question/13191643

#SPJ1

Answer:

a)  True    b)  True

Explanation:

a) a capacitor is made up of two flat plates and each one has a charge of the same sign, therefore the statement is true

b) the current is the flow of electrons per unit of time, therefore the charge is not zero, therefore the statement is True

Answer:

the left side had more force applied to it than the right side therfore the object moved to the right side because it had less force on it.

Answer:

energy? or power? I'm not really sure but using the quizzes app really help with science problems

According to the information we can infer that the travel angle is called a "drag" angle.

In welding terminology, the travel angle refers to the angle between the axis of the electrode and the workpiece surface. When the top of the electrode leads the welding end (meaning the electrode is inclined downward at an angle) and the welding arc is pointing back toward the weld bead, it is known as a "drag" angle.

In this configuration, the electrode is dragged along the surface of the workpiece, creating a trailing arc direction. This technique is commonly used in certain welding processes, such as shielded metal arc welding (SMAW) or stick welding, to control the heat input and the direction of the molten metal flow during the welding operation.

Learn more about angles in: https://brainly.com/question/13954458
#SPJ4

Answer: The width of bands will be 2λ

Explanation: Please see the attachments below

Answer:

that the acceleration is negative therefore it is directed to the left.

Explanation:

To find the acceleration of a system we must use Newton's second law

          ∑ F = m a

To apply this equation to our case we set a reference system where the direction to the right is positive.

We have 3 forces, a force F₁ = -20 N, a negative sign indicates that it is directed to the left, two forces F₂ and F₃ of magnitude 8N each directed to the right.

We substitute

            -F₁ + F₂ + F₃ = m a

           - 20 +8 + 8 = m a

             -4 = m a  

             a = -4 / m

Here we can see that the acceleration is negative therefore it is directed to the left.

Answer:

Car A has a velocity of 40 km/hr  west.

Explanation:

The velocity of an object is a vector quantity. It has both magnitudes as well as direction.

Arrows are used to show direction.

Car A is moving towards west. Car B is moving towards east-south direction. Car C is moving towards South direction. Car E is moving towards North direction.

So, the correct option is (a) i.e. Car A has a velocity of 40 km/hr  west.

The most important consideration when conducting a spot speed study is to ensure accurate and representative data collection.

A spot speed study is a method of collecting data on the speed of vehicles at a specific location and time. The data collected can be used to determine if the speed of vehicles is within the acceptable range or if there is a need for traffic control measures.

The accuracy and representativeness of the data collected are essential for the success of the study. The study should be conducted under conditions that are representative of the typical conditions at the location of interest. This includes collecting data during typical traffic conditions, such as rush hour, and under normal weather conditions.

Additionally, the methods used to collect the data should be accurate and reliable. This includes using calibrated equipment, selecting appropriate locations for data collection, and ensuring that the data is recorded correctly.

To know more about the speed, here

brainly.com/question/30462853

#SPJ4

The total distance covered by the bird when it flies to the finish line and back to the runner is 9.3 km.

The total total distance travelled by the bird in flying from the runner to the finish line and back to the runner is calculated as follows:

Initial distance from the runner to the finish line = 6.2 km

Time taken by the bird to reach the finish line from the initial position of the runner = 6.2/15 * 60 mins = 24.8 mins

Time it will take the runner to get to finish line = 6.2/5 * 60 = 74.4 mins

Distance traveled by the runner from L after 24.8 mins will be:

Distance traveled by the runner from L = 5 * 24.8/60

Distance traveled by the runner from L  = 2.07 km

Remaining distance to be covered = 6.2 - 2.07 = 4.13

The ratio of the speed of the bird and the runner = 1 : 3

Total ratio = 4

Distance covered by bird in returning = 3/4 * 4.13 = 3.1 km

Total distance covered by the bird = 6.2 + 3.1 km

Total distance covered by the bird = 9.3 km

Learn more about distance at: https://brainly.com/question/7243416

#SPJ1

Answer:

4 ohms

Explanation:

Current = Voltage/resistance

2 = 8/R

2R = 8

R = 4

Answer:

0.25 cm³.

Explanation:

We shall apply Boyle's law to find the solution . According to it

PV = constant where P is pressure and V is volume of the gas.

P₁ V₁ = P₂V₂

1 x .5 = 2 x V₂

V₂ = 0.25 cm³.

Answer:

Explanation:

Urinary system, reproductive system, and integumentary system

Answer:

Useless body parts include the appendix, the tail bone, and the muscle fibers that produce goose bumps.

In fact, it is the natural tendency of objects to resist changes in their state of motion. This tendency to resist changes in their state of motion is described as inertia. Inertia = the resistance an object has to a change in its state of motion.

Answer:

d = 100.56 m

Explanation:

It is given that,

Force acting on the dog is 22.4 N

Angle at which the force is applied is 115 º

Work done is - 42.3 J

We need to find the distance covered by the dog. The work done by an object is given by :

\(W=Fd\cos\theta\)

d = distance covered by the dog

\(d=\dfrac{W}{\cos\theta}\\\\d=\dfrac{-42.5}{\cos(115)}\\\\d=100.56\ m\)

So, the dog moves a distance of 100.56 m.

Answer:

4.47 M.

Explanation:

I do Acellus and just got it correct!