if the 1.00 kg block is initially at rest and the 7.00 kg block is moving, what is the initial speed of the 7.00 kg block?

The distance from station B to station C as seen in the velocity time graph is calculated as; 6000 m

Velocity-time graph is simply defined as a plot that shows the relationship between Velocity and Time.

Now, the velocity time graph attached shows the motion of the movement of the train from station B to station C.

Now, when it comes to velocity time graph, we have to know that the area of a velocity time graph, gives us the overall distance covered by the motion it represents.

Since the velocity time graph is a trapezium shape, then we will use the are of a trapezium formula to get the distance from station B to station C.

Area of trapezium = ¹/₂(sum of parallel sides) * height

Plugging in the relevant values from the graph gives;

Distance = ¹/₂(300 + 100) * 30

Distance = ¹/₂ * 400 * 30

Distance = 6000 m

Read more about Velocity Time Graph at; https://brainly.com/question/26209293

#SPJ1

When the magnification is less than 1 it means that the height of the image formed is less than that of the object.

Magnification is defined as the ratio of the size of the image formed to the ratio of the object.

When an object is examined under a lens or a curved mirror, it produces images described by ray optics based on the position of the object from the lens or the mirror.

The image formed may be of the same size, maybe greater than the object or may be smaller based on the position and distance of the object from the lens.

If the image formed is smaller than the object then, the ratio of the height of the image to the ratio of the height of the object will be less than 1.

Learn more about magnification:

https://brainly.com/question/2548694?referrer=searchResults

Answer:

The leaves of an electroscope will return to their original position if the electroscope is not grounded because the final condition of the electroscope is the same as it was originally.

If however if one touches the terminal of an electroscope while the scope is exposed to a source of static electricity, and then the contact with the terminal is removed before the source of static electricity is taken away, then any excess electrons will remain on the electroscope and the leaves will remain diverged.

The correct answer is B. According to Newton's law of universal gravitation, the gravitational force between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

In simpler terms, as objects get closer together, the gravitational force between them increases.

When the distance between two objects decreases, the denominator of the equation (distance squared) becomes smaller, resulting in a larger force. Conversely, when the distance increases, the denominator becomes larger, resulting in a smaller force.

It is important to note that the mass of an object does not directly affect the strength of the gravitational force between two objects. However, a higher mass will lead to a greater gravitational force when compared to a lower mass, but only because the force is being exerted on a more massive object. The mass of an individual object doesn't directly affect the gravitational force it experiences from another object. option B

for more questions on gravitational force

https://brainly.com/question/27943482

#SPJ8

Answer:

c

Explanation:

Answer:

protons have a positive charge

Explanation:

neutrons have no charge

electrons have negative charge

Answer:

hydrochlorine +12÷B to the power of 4 -× y reapeated zminus 2 to the power of 9

The area around a magnetic body or moving charge on which a magnetic force acts. When the magnetic field changes with time, an electric field is induced in the closed loop.

According to Faraday's law, the EMF is induced in the coil when the magnetic field, area and angle change.

Flow rate can be expressed as the flow rate of liquid, radiant energy, or particles in a given area.

Flux is the scalar product of the magnetic field in the region

Ф = ∫ B. dA

where B is the magnetic field and A is the area

Let's look at the factors that influence the flow at rest

The value of the magnetic field varies either in time or space

Wax area changes and the arc fits in the size

angle between the magnetic field and the surface changes

Flux is an analysis of the total magnetic field traveling within a given magnetic field.

Magnetic flux is what creates a magnetic field around a magnetic body.

The SI unit of magnetic flux is Weber.

Learn more about magnetic here-

https://brainly.com/question/3160109

#SPJ4

Answer:

a= kinetic energy vs. different masses at same speed, b= kinetic energy vs. same masses at different speeds

Explanation:

graphs are looking at speed so masses don't matter as much. same speed the whole time will equal same kinetic energy the whole time.

As long as the applied stress is removed, a material that is linearly elastic experiences stress and strain that are directly proportional within the elastic limit.

In a material that is linearly elastic, the Young's modulus (E), stress, and strain are all related by the equation you supplied, E =. Here is a quick definition of each phrase:

(E) Young's modulus It is a way to gauge how hard or stiff a material is. Within the elastic limit of the material, it indicates the stress to strain ratio. The stiffer the material, the higher the Young's modulus.

Stress (): The force exerted to a material's surface area is called stress. The internal resistance of a material to deformation under an applied force is measured by stress.

To learn more about elastic

https://brainly.com/question/12644900

.#SPJ11

Answer:

Anaphase

Explanation:

This is because the spindle fibres have shortened and is pulling the chromatids towards the poles of the cell. The chromatids have also separated.

The cell division which is shown in the picture is anaphase. The correct option is C.

Meiosis is divided into two main phases, each with its own set of subphases:

1 Meiosis I:

a. Prophase I: This is the longest and most complex phase of meiosis. During this phase, homologous chromosomes pair up and form bivalents, and crossing over occurs between the homologous chromosomes. The nuclear envelope breaks down, and spindle fibers form from the centrioles at opposite poles of the cell.

b. Metaphase I: During this phase, the homologous chromosomes line up along the metaphase plate, with one chromosome from each homologous pair facing each pole of the cell.

c. Anaphase I: During this phase, the spindle fibers contract and pull the homologous chromosomes towards opposite poles of the cell.

d. Telophase I: During this phase, the chromosomes reach the poles of the cell and the nuclear envelope reforms around each set of chromosomes. The cell then undergoes cytokinesis, resulting in two daughter cells.

2. Meiosis II:

a. Prophase II: During this phase, the nuclear envelope breaks down, and spindle fibers form from the centrioles at opposite poles of the cell.

b. Metaphase II: During this phase, the chromosomes line up along the metaphase plate, with sister chromatids facing opposite poles of the cell.

c. Anaphase II: During this phase, the spindle fibers contract and pull the sister chromatids towards opposite poles of the cell.

d. Telophase II: During this phase, the chromosomes reach the poles of the cell and the nuclear envelope reforms around each set of chromosomes. The cell then undergoes cytokinesis, resulting in four haploid daughter cells.

Meiosis involves two rounds of chromosome segregation, resulting in four haploid daughter cells that are genetically distinct from the parent cell.

Therefore, The correct option is C i.e anaphase.

To learn more about Cell structure click:

https://brainly.com/question/22339852

#SPJ3

Answer:

5

Explanation:

"Par 3" means that the player is expected to complete the hole with three throws. If you are two over par, that means it took you two extra throws to finish the hole.

The amount of heat needed to raise the temperature of a 2kg object from 15°C to 25°C is 34000J.

HOW TO CALCULATE SPECIFIC HEAT CAPACITY:

Where;

Learn more about how to calculate heat absorbed at: https://brainly.com/question/11194034?referrer=searchResults

The amount of force required to stop an object, based on the forces of inertia and momentum, varies according to speed, weight, and the distance between impact and stop.

Inertia is the tendency of an object to remain in motion unless acted upon by an outside force, while momentum is the product of an object's mass and velocity. The amount of force required to stop an object is proportional to its mass, velocity, and the distance it needs to travel before it comes to a stop. The greater the mass, velocity, and distance, the more force is required to stop the object.

Learn more about inertia :

https://brainly.com/question/14460640

#SPJ4

Answer: 71 J

Explanation: The formula for gravitational potential energy is Epg= mgh.

So you plug in 2.2 as m, 3.3 as h and 9.81 as g. Once you do that you should get an answer of 71.2206. But because there are only two significant digits in the question, your answer must also have two significant digits.

The gravitational potential energy of the rock of 2.2 kg that is 3.3 m above the river is 71 J. The potential energy of the rock when measured from the edge of the bridge is zero where because rock is resting in the edge itself , so height will be zero.

Potential energy of an object is the energy generated by virtue of its position. Thus the energy is stored on the object when it rest. The energy stored on it when it is in a gravitational field is called its gravitational potential energy.

The gravitational potential energy of an object is given as follows;

p = mgh

where h is the height from the surface.

Given mass of the rock, m = 2.2 Kg

height = 3.3 m

g = 9.8 m/s²

then, p = 2.2 kg × 3.3 m ×  9.8 m/s² = 71 J.

Therefore, the gravitational potential energy of the rock is 71 J.

Find more on potential energy:

https://brainly.com/question/12807194

#SPJ5

Answer:This is the Difference Between a Hypothesis and a Theory. ... In scientific reasoning, a hypothesis is an assumption made before any research has been completed for the sake of testing. A theory on the other hand is a principle set to explain phenomena already supported by data.

Explanation:

Answer:

The package reaches the ground in  

4.67 s

and hits the ground with a speed of  

33.8 m/s

.

Explanation:

Energy refers to the ability or capacity to do work. Energy can be of various types as follows:

Kinetic energy is energy possessed by an object because of its motion while potential energy is energy possessed by an object because of its position or its condition.

The law of conservation of energy states that energy cannot be created nor destroyed but can only be transformed i.e. converted from one form to another.

Friction is a force that resists the relative motion or tendency to such motion of two bodies in contact.

Learn more about energy at: https://brainly.com/question/1932868

#SPJ1

Answer:

4.097 Joules

Explanation:

Applying,

P.E = mgh............... Equation 1

Where P.E = Potential energy, m = lemming mass, h = height, g = acceleration due to gravity

From the question,

Given: m = 0.0780 kg, h = 5.36 m

Constant: g = 9.8 m/s²

Substitute these values into equation 1

P.E = 0.0780(9.8)(5.36)

P.E = 4.097 Joules.

Hence the potential energy is 4.097 Joules

Answer:

4.097 J

Explanation:

Using the Pitzer correlation, the molar volume of acetylene vapor at 277.6 K and 19.7 bar is approximately 31.24 cm^3/mol.

To find the molar volume of acetylene vapor at a given temperature and pressure using the Pitzer correlation for the second virial coefficient, we can use the following equation:

B(T) = B0 + B1(T - Tc) + B2(T - Tc)^(3/2)

where B(T) is the second virial coefficient at temperature T, B0, B1, and B2 are constants, Tc is the critical temperature, and T is the temperature.

First, we need to calculate the constants B0, B1, and B2 using the given data:

B0 = 0.083 - (0.189 / Tc)^(1/2) - (0.001 / Tc)

B1 = 0.139 + (0.673 / Tc)^(1/2) - (0.950 / Tc)

B2 = 0.000012

Substituting the values into the equation, we can calculate the second virial coefficient B(T).

Next, we can use the ideal gas law to relate the molar volume V to the pressure P and temperature T:

PV = RT

Solving for V, we get:

V = RT / P

Substituting the values of R, T, and P, we can calculate the molar volume V in cm^3/mol.

Using the given data:

T = 277.6 K

P = 19.7 bar

Tc = 308.3 K

R = 8.314 J/mol·K

Acentric factor (ω) = 0.187

Calculating B(T) and V:

B(T) ≈ 0.001531 m^3/mol

V ≈ (8.314 J/mol·K * 277.6 K) / (19.7 bar * 10^5 Pa/bar) ≈ 31.24 cm^3/mol

Therefore, the molar volume of acetylene vapor at 277.6 K and 19.7 bar is approximately 31.24 cm^3/mol.

To know more about volume, click here:

brainly.com/question/28058531

#SPJ11

When two planets revolve around the sun, they do not necessarily do so in the same direction.  In the case of Venus, which is known for its retrograde rotation, if it were to revolve around the Sun in a direction that is opposite to Earth's revolution, it would still have a synodic period of 583.92 Earth days.

A synodic period refers to the time required for a celestial object to return to the same relative position as it had with respect to a reference point.In this case, the synodic period of Venus as seen from Earth would be:583.92 Earth days. This is due to the fact that the synodic period of two planets is calculated by finding the time between each opposition with the Sun.

An opposition happens when Earth is directly between Venus and the Sun. When the planets are at an opposition, the difference in the time it takes for them to complete one orbit is equal to the length of a synodic period.A retrograde orbit occurs when a planet or moon travels in the opposite direction from the rotation of its host body.  

To know more about retrograde rotation visit:-

https://brainly.com/question/32399725

#SPJ11

Answer:

240N

Explanation:

The formula for force is F=mass×acceleration.

Therefore, Force= 120×2= 240N