Can someone help me :(
A dilute solution has of solute in the solvent
Explanation:
"The concentration of a solution is a measure of the amount of solute that has been dissolved in a given amount of solvent or solution. A concentrated solution is one that has a relatively large amount of dissolved solute. A dilute solution is one that has a relatively small amount of dissolved solute."
How many different genera are represented?
The subject is in SCIENCE
Explanation:
Numbers of accepted genera
The numbers of either accepted, or all published genus names is not known precisely; Rees et al., 2020 estimate that approximately 310,000 accepted names (valid taxa) may exist, out of a total of c.
Which samples will heat up faster? circle one 100 g (least massive) 200 g (most massive) No Difference Explain your reasoning:
if Circle one 100 g (least massive) and 200 g (most massive) have the same material then the least massive i.e 100g heat faster.
what is specific heat?The amount of heat required to raise the temperature of an object is proportional to its mass. Specifically, the heat required is given by,
the formula
Q = m × c × ΔT
Where Q= is the amount of heat required
m= is the mass of the object
c= is the specific heat capacity of the material, and ΔT is the change in temperature.
If the two samples are made of the same material and have the same initial temperature, their specific heat capacities and the change in temperature will be the same.
Then, the amount of heat required to raise the temperature of the 100 g sample will be half that of the 200 g sample. This means that the 100 g sample will heat up more than the 200 g sample, as it requires less heat to raise its temperature.
Therefore, The sample with 100 g (least massive) will heat up faster than the sample with 200 g (most massive) if both samples are made of the same material and have the same initial temperature.
To learn more about specific heat click:
https://brainly.com/question/11297584
#SPJ3
Johanna is studying what happens to the energy as a ball rolls down a ramp. What is one form of energy that she is studying? gravitational potential energy electrical energy chemical energy elastic potential energy
Answer: gravitational potential energy
Explanation:
Gravitational potential energy is refered to as the potential energy that an object has due to its gravitational field, which in turn is being turned into a kinetic energy when there is a fall of such objects.
Since Johanna is studying what happens to the energy as a ball rolls down a ramp, the form of energy here is the gravitational potential energy.
Answer:
the answer is A
Explanation:
gravitational potential energy
How did the leaning tower of Pisa start leaning?
Answer:
The foundation was somewhat bad
Explanation:
The leaning was caused by the uneven settling of the building's foundations in the soft ground. Three of its eight stories had been completed when the uneven settling of the building’s foundations in the soft ground became noticeable. At that time, war broke out between the Italian city-states, and construction was halted for almost a century. This pause allowed the tower’s foundation to settle and likely prevented its early collapse.
hope this helps:)
A 1.00 kg object moving in the + x direction at 10.0 m/s collides with a 1.50 kg object traveling at 5.00 m/s in the - x direction. After the collision, the 1.00 kg object moves with a velocity of 4.00 m/s in the - x direction. How much kinetic energy was lost during the collision?
Answer:
The amount of kinetic energy lost during the collision is 60.75 J
Explanation:
The given parameters are;
The mass of the object moving in the +x direction, m₁ = 1.00 kg
The velocity of the object moving in the +x direction, v₁ = 10.0 m/s
The mass of the object moving in the -x direction, m₂ = 1.50 kg
The velocity of the object moving in the +x direction, v₂ = 5.00 m/s
The final velocity of the 1.00 kg mass after collision, v₃ = 4.00 m/s
The direction of motion of the 1.00 kg mass after collision = -x direction
The total initial kinetic energy of the system, [tex]K.E._{total \ initial}[/tex] = 1/2·m₁·v₁² + 1/2·m₂·v₂²
∴ [tex]K.E._{total \ initial}[/tex] = 1/2×1.00×10² + 1/2×1.50×5² = 68.75 J
The final kinetic energy of the system, [tex]K.E._{final}[/tex] = 1/2·m₁·v₃²
[tex]K.E._{final}[/tex] = 1/2×1.00×4² = 8 J
The amount of kinetic energy lost during the collision, [tex]\Delta K.E._{system}[/tex] is given as follows;
[tex]\Delta K.E._{system}[/tex] = [tex]K.E._{final}[/tex] -[tex]K.E._{total \ initial}[/tex] = 8 J - 68.75 J = -60.75 J
The amount of kinetic energy lost during the collision = 60.75 J.
When comparing mass and size data for the planets Earth and Jupiter, it is observed that Jupiter is about 300 times more massive than Earth. One might quickly conclude that an object on the surface of Jupiter would weigh 300 times more than on the surface of the Earth. For instance, one might expect a person who weighs 500 N on Earth would weigh 150000 N on the surface of Jupiter. Yet this is not the case. In fact, a 500 N person on Earth weighs about 1500 N on the surface of Jupiter. Explain how this can be.
Answer:
This situation happens because radius of Jupiter is 10 times greater than radius of the Earth.
Explanation:
According to Newton's Law of Gravitation, weight is directly proportional to the mass of the planet ([tex]M[/tex]), measured in kilograms, and inversely proportional to the square of the radius of the planet ([tex]R[/tex]), measured in meters. That is:
[tex]W \propto \frac{M}{R^{2}}[/tex]
[tex]W = \frac{k\cdot M}{R^{2}}[/tex](1)
Where [tex]k[/tex] is proportionality constant, measured in Newton-square meters per kilogram.
Then, we eliminate the proportionality constant by constructing this relationship:
[tex]\frac{W_{J}}{W_{E}} = \left(\frac{M_{J}}{M_{E}}\right)\cdot \left(\frac{R_{E}}{R_{J}} \right)^{2}[/tex]
Where subindices J and E mean "Jupiter" and "Earth", respectively. If we know that [tex]\frac{M_{J}}{M_{E}} = 300[/tex], [tex]W_{E} = 500\,N[/tex]and [tex]W_{J} = 1500\,N[/tex], then the ratio of radii is:
[tex]\frac{R_{E}}{R_{J}} = \sqrt{\left(\frac{W_{J}}{W_{E}} \right)\cdot \left(\frac{M_{E}}{M_{J}} \right)}[/tex]
[tex]\frac{R_{E}}{R_{J}} = \sqrt{3\cdot \left(\frac{1}{300} \right)}[/tex]
[tex]\frac{R_{E}}{R_{J}} = \frac{1}{10}[/tex]
Therefore, this situation happens because radius of Jupiter is 10 times greater than radius of the Earth.
The bouncing back of a ray of light , sound , or heat when the ray hits a surface that it does not penetrate
A . Refraction
B . Reflection
C. Resonance
D. Standing Wave
Answer:
B. reflection
Explanation:
Have a good day! :)
The bouncing back of a ray of light, sound, or heat when the ray hits a surface that it does not penetrate is called a reflection, so option B is correct.
What is Reflection?Reflection is the abrupt change in a wave's propagation direction when it encounters a boundary between two media. The approaching wave disturbance is still present in the same medium, at least in part. At plane borders, reflection happens regularly and follows a straightforward law.
Angles of incidence (between the oncoming wave's direction of motion and a perpendicular to the reflecting surface) are identical to angles between the reflected wave's direction of motion and a perpendicular (angle of reflection). Diffuse reflection occurs at uneven or irregular boundaries. The percentage of the wave's energy that is reflected by a surface material is known as its reflectivity.
Therefore, the bouncing back of a ray of light, sound, or heat when the ray hits a surface that it does not penetrate is called a reflection.
To know more about Reflection:
https://brainly.com/question/2254222
#SPJ6
sort the facts into the category that they best describe sound waves and electromagnetic waves
Answer:
Sound waves have a low speed of 330 m/s
Sound waves are mechanical waves
Electromagnetic waves have a greater speed of 3.0×10^8 m/s
Electromagnetic waves are due to disturbance of electromagnetic objects.
Describe the conceptual relationship between energy and force.
Answer:
When two objects interact, each one exerts a force on the other that can cause energy to be transferred to or from the object. For example, when energy is transferred to an Earth-object system as an object is raised, the gravitational field energy of the system increases.
Explanation:
Force and work are directly proportional to each other, while force and displacement are indirectly propotional. The equation showing the relationship is W= Fd. W represents work measured in joules; F represents force in newtons; and d represents distance in meters.
What is a transferable skill?
ОА.
a summary of experiences
OB.
the ability to do something
C.
the movement of skills from one experience to another
OD
a skill you learn from another person
Answer:
I think D is correct option
Difference between Pascal’s law and law of flotation
it regulates the amount of light passing through the spicemen. A. arm B. base C. body tube D. diaphragm
Answer:
D. diaphragm
Explanation:
The question above is related to the different parts of the microscope. Among the choices above, it is the diaphragm that regulates the amount of light passing through the specimen. This is located below the stage (the platform where the slide of specimen is placed). With the help of the diaphragm, the intensity of light is controlled, which allows the observer to see the specimen in the best contrast.
Additional Information:
The arm links the base of the microscope to its head.
The base simply supports the microscope.
The body tube links the objective lenses to the eyepiece.
HELP PLEASE WILL GIVE BRAINLIEST!
Find the mass of an object that has a density of 1.5 g/cm^3 and has a volume of 8 cm^3
Answer:
12 grams
Explanation:
To calculate mass, we can use the following formula:
Mass = density × volume
Plug in the values
Mass = 1.5 × 8
Mass = 12
Therefore, the mass of the object is 12 grams.
I hope this helps!
A negative charge of -2.0 C and a positive charge of 3.0 C are separated by 80 m. What is the electrostatic force between the two charges? Is the force attractive or repulsive? How do you know?
Answer:
1. 8437500 N
2. The force between the two charges is attractive.
Explanation:
1. Determination of the force between the two charges.
Charge 1 (q₁) = –2.0 C
Charge 2 (q₂) = 3.0 C
Distance apart (r) = 80 m
Electrical constant (K) = 9×10⁹ Nm²/C²
Force (F) =?
F = Kq₁q₂ / r²
F = 9×10⁹ × 2 × 3 / 80²
F = 5.4×10¹⁰ / 6400
F = 8437500 N
Thus, the force of attraction between the two charges is 8437500 N
2. From the question given, the charges are:
Charge 1 (q₁) = –2.0 C
Charge 2 (q₂) = 3.0 C
We understood that like charges repels while unlike charges attract. Since the two charges (i.e –2 C and 3 C) has opposite signs, it means they will attract each other.
Thus the force between them is attractive.
What are not examples of velocity
Answer:
Explanation:
Acceleration roughly means “change in velocity.” If this change in velocity is consistently in one direction, the body will reach a point at which its velocity is zero.
Another consideration is when you drop a basketball onto the pavement. The ball falls, hits the ground, and comes back up. Because its direction of motion changed, you know that its velocity MUST have been 0 m/s at some point during the bounce.
This doesn't mean there was no acceleration at this point.
For the lever below calculate the position of the fulcrum if mass "A" = 25
kg and mass "B" = 100 kg and the leaver is 25 meters in length.
The velocity of a vehicle is typically expressed relative to which of the following?
The question is incomplete, however, The velocity of a vehicle is typically expressed relative to ground.
velocity is the measurement of a body's "pace of change of displacement in relation to time" when the body is traveling along a straight route.It is common knowledge that the word "linear" refers to something that is straight; therefore, when the body moves in a straight path, it is said to be linear velocity .Alternatively, velocity is the distance traveled by a body traveling in a specified direction during a predetermined period of time. Thus, the fundamental idea of linear velocity is provided by the union of these two quantities.Because it always has a direction velocity is a vector.To know more about velocity visit : https://brainly.com/question/19979064
#SPJ1
What temperature will the hot plate reach when set to 300 degrees celsius?
A ball is thrown horizontally at a speed of 24 meters per second from the top of a cliff. if the ball hits the ground 4.0 seconds later, approximately how high is the cliff?
Answer:
78.4 m
Explanation:
To obtain the height of the cliff;
We can use the Relation to obtain the final velocity, v
v = u + at
a = acceleration due to gravity = 9.8m/s²
v = 0 + (9.8*4)
v = 0 + 39.2
v = 39.2 m/s
To obtain the Height, S
v² = u² + 2aS
39.2^2 = 0 + 2(9.8)S
39.2^2 = 0 + 19.6S
1536.64 = 19.6S
S = 1536.64 / 19.6
S = 78.4 m
CHOOSE ONE ANSWER OUT OF a, b, c, d (Multiple Choice): Which of the following statements about fluids is true? a. Fluids rarely take the shape of their container. b. Fluids include liquids and gases. c. Fluids flow from low pressure to high pressure. d. Fluid exert the most pressure in a downward direction.
Help please this is worth 30% of my grade in total
Answer:
D. Both are held together by gravitational forces
Explanation:
The common features in galaxies are;
Gravity holds the stars togetherThe dense region in a galaxy is the centerThey all have a faint outer region and mysterious dark matter haloThey all have stars, planets, asteroids, galactic cloudpleas help me phyic science
Answer:
D
Explanation:
The amount of energy present in the matter
What is the netforce of the dog thanks!
Answer:
5 Newtons Up and 5 Newtons Right
Explanation:
Treat each force vector as a value and choose the upward and rightward directions to be positive. Downward and Leftward forces will be considered "negative". For the vertical net force we have a positive 10 N upwards and a negative 5 N downwards. The net force in the vertical will be 5 N upwards. In the horizontal we have 10 N to the right and 5 N to the left. The net force in the horizontal will be 5 N to the Right.
It is easier if you split the motion into horizontal and vertical components.
Which of the following is not a product of a complete combustion reaction of a hydrocarbon?
A. energy
B. carbon dioxide
C. carbon
D. water
Answer:
I think the answer might be C
C. Carbon is not a product of a complete combustion reaction of a hydrocarbon.
What is complete combustion?Complete combustion is a process in which all carbon contained in a fuel or gas stream is converted to carbon dioxide.
The generic equation for the complete combustion of a hydrocarbon is:
CxHy + O₂ ⇒ CO₂ + H₂O + Energy
Let's consider which of the following is a product of a complete combustion reaction of a hydrocarbon.
A. energy. YES.
B. carbon dioxide. YES.
C. carbon. NO.
D. water. YES.
C. Carbon is not a product of a complete combustion reaction of a hydrocarbon.
Learn more about complete combustion here: https://brainly.com/question/9913173
Two boys, shrijan having weight 600N and shrijesh having weight 300N are playing see-saw. If shrijan is sitting at 2m from fulcrum, where should shrijesh sit from fulcrum to balance shrijan?
plzzzzzz help me
Answer:
Shrijesh should be located at 4[m] from the fulcrum point.
Explanation:
We must keep in mind that the moment around the point of rotation (fulcrum) must be equal, so that the bar remains in balance.
The moment for shrijan is:
[tex]M=F*d\\M=600*2\\M_{shrijan}=1200[N*m][/tex]
So if the moment should be equal, the distance can be obtain from the same equation using the shrijesh's force or weight.
[tex]M_{shrijesh}=F*d_{2}\\1200=300*d_{2}\\d_{2}=4[m][/tex]
Objects tend to continue in their current state, if it is rest or uniform motion. What is the term for this tendency
Answer:
Inertia
Explanation:
The term for the tendency is inertia.
The inertia of a body is the tendency of the body to remain unmoved when at rest and the tendency to keep moving when in motion. In other words, it is the tendency of a body to remain in a state of rest or motion.
A static body will remain in a state of perpetual rest if no force acts on it and a moving body will keep moving in the same direction if no force acts on it. The force that needs to be overcome in order to change the state of the object is otherwise known as inertia force.
A flexible container holds 1.5 L of gas at a pressure of 3 atm. The volume is adjusted and the new pressure is measured at 2 atm. What is the new volume of the container?
Answer:
The final volume of the gas is 2.25 L.
Explanation:
Given;
initial volume of the gas, V₁ = 1.5 L
initial pressure of the gas, P₁ = 3 atm
final pressure of the gas, P₂ = 2 atm
final volume of the gas, V₂ = ?
Apply Boyle's law to determine the final volume of the gas;
P₁V₁ = P₂V₂
V₂ = (P₁V₁) / P₂
V₂ = (3 x 1.5) / (2)
V₂ = 2.25 L
Therefore, the final volume of the gas is 2.25 L.
The laws of reflection holds for__
a) plane mirrors. b) spherical mirrors.
c)both. d) None of them.
Answer:
c)both
Explanation:
The laws of reflection hold true for all the reflecting surfaces either spherical or plane. Therefore, the plane mirror, concave mirror and the convex mirror all will follow the laws of reflection.
Answer:
It holds for only plane mirrors
It states that the angle of incidence is equal to the angle of reflection.
This is only possible in plane mirrors only