please help please please please please​

Final answer:

Carbon monoxide's chemical formula is CO; it's a toxic gas formed by the incomplete combustion of carbon-containing materials and can react with oxygen to form carbon dioxide (CO₂).

Explanation:

The student is asking about the chemical formula for carbon monoxide, which is CO. This compound is composed of one carbon atom covalently bonded to one oxygen atom. Carbon monoxide is a colorless and very toxic gas with no smell, and its boiling point is -190 °C. It is produced through the incomplete combustion of carbon-containing materials. An increased concentration of this gas in the air can be hazardous to health, as it can bind with hemoglobin in blood, preventing proper oxygen transport.

Additionally, in terms of chemical reactions, carbon monoxide can react further with oxygen to form carbon dioxide (CO₂), which is a gas with the structural formula O=C=O, indicating that the carbon atom forms two double covalent bonds with the oxygen atoms. Carbon dioxide is a common greenhouse gas in Earth's atmosphere.

Answer: 0.03 Hz

Explanation:

The frequency [tex]f[/tex] of a light with a wavelength [tex]\lambda=1(10)^{10} m[/tex] is calculated by the following equation:

[tex]f=\frac{c}{\lambda}[/tex]

Where [tex]c=3(10)^{8}m/s[/tex] is the speed of light

Then:

[tex]f=\frac{3(10)^{8}m/s}{1(10)^{10} m}[/tex]

[tex]f=0.03 s^{-1}=0.03 Hz[/tex] This is the frequency

Answer: I am pretty sure the answer is B

Explanation: If not sorry bro.

Radial fractures tend to occur first when a pane of glass is struck.

Answer: Option A

Explanation:

There is a slight difference between radial and concentric fractures and as radial fractures are formed which extends outwards in a radial manner  from the point where the glass is struck.

Whereas concentric fractures are circular in pattern and they terminate long before radial crack. Also when a bullet is fired from a gun, a similar reaction is observed as it gets struck on the surface and fractures are formed in the same pattern.

The Anwer is: A Radical Fractures

Answer:

Answer C : The object's momentum will greatly increase

Explanation:

Recall that force and linear momentum are closely related by the equation:

[tex]F = \frac{MomentumChange}{time}[/tex]

Both, Momentum Change and Force (F) are in the numerator of on either side of the equation, so they are in direct proportionality. A large force (force greatly increased) will be the reflection of a large change in momentum.

Answer:

The object’s momentum will greatly increase if the net force acting on the object is greatly increased. So option C is the best statement which describes the change in object momentum.

Explanation:

So as the force is directly proportional to momentum and it is obtained by performing the first order derivation of momentum, the variation in force and momentum will have to be same.

[tex]F = \frac{MomentumChange}{time}[/tex]

The force being the derivative of momentum indicates that if the net force acting on object is greatly increased means the momentum will also be undergoing great increase as the acceleration of the object will also be increased greatly due to increase of force.

Answer:

This atom doesn’t satisfy octet rule

Explanation:

To satisfy octet rule the outermost shell should have 8 electrons. This is called octet electronic configuration which makes the atom stable. When participating in chemical reactions atoms tend to lose or gain electrons or share electrons like in a covalent bond all to achieve the octet configuration.

In this atom there are three shells and 11 electrons in total. Maximum number of electrons that can be present in the first shell is two and in this atom the first shell contains that maximum electrons. The second can contain maximum 8 electrons. In this atom the second shell is fully filled with 8 electrons.

For octet rule to be satisfied the outermost shell or the valence shell should contain 8 electrons. But in this atom the outermost shell has 1 electron. This means that the atom doesn’t satisfy octet rule. In order to obtain the octet configuration it should lose 1 electron.

Answer:

Answer

Explanation:

Sample Response: No, it does not, because the octet rule says that an atom needs to have eight electrons in its valence shell to be stable. The exceptions are hydrogen and helium, which need only two electrons. This atom has only one electron.

The force between the spheres increases when the mass increases in one of the spheres.

Explanation:

            Newton law of universal gravity extends gravity beyond the earth's surface. This gravity depends directly on the mass of both objects and is inversely proportional to square of distance between their centers.  

                   [tex]\bold{F=\frac{G \times\left(m_{1} \times m_{2}\right)}{\left(r^{2}\right)}}[/tex]

          Since gravity is directly proportional to “mass of both interacting objects”, stronger objects with greater gravitational force attract. If the mass of one object increases, gravity between them also increases. For example, if an object's mass of one double, force between them also doubles.  

Answer: The force between two spheres increase when mass of one or both spheres are increased.

Explanation:

According to universal law of gravitation “every body in the universe attracts every other body with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them”.

It is given by the expression

[tex]F=(GM_1 M_2)/r^2[/tex]  

Where G is the gravitational constant, [tex]M_1 ,M_2[/tex] are the masses of the bodies and  r is the distance between them.

In the question two conditions are given.

Since force between two objects is directly proportional to the masses, the force increases in both cases.

To find the launch speed and the time the frog spends in the air, we can use the equations of projectile motion. The launch speed is approximately 4.4 m/s, and the time the frog spends in the air is approximately 0.63 s.

To find the launch speed and the time the frog spends in the air, we can use the equations of projectile motion. Since the frog jumps at a launch angle of 45° and a distance of 2.2 meters, we can use the range equation to find the launch speed:

R = ((V^2) * sin(2θ)) / g

Substituting the given values:

2.2 = ((V^2) * sin(90°)) / 9.8

Simplifying the equation:

(V^2) * sin(90°) = 2.2 * 9.8

V = √((2.2 * 9.8) / sin(90°))

V ≈ 4.4 m/s

To find the time the frog spends in the air, we can use the following equation:

t = (2 * V * sin(θ)) / g

Substituting the given values:

t = (2 * 4.4 * sin(45°)) / 9.8

Simplifying the equation:

t ≈ 0.63 s

https://brainly.com/question/29545516

#SPJ12

The frog's launch speed and time spent in the air can be calculated using principles of projectile motion. The frog's launch speed is approximately 4.8 m/s, and it spends about 0.7 seconds in the air.

To answer your query, we first need to apply some principles of projectile motion, specifically the equations of motion along the x-axis (horizontal) and y-axis (vertical).

For the first part of the question, we need to determine the frog's launch speed. We use the formula for the range of a projectile, given as R = (v^2 * sin(2*θ)) / g, where R is the maximum horizontal distance (2.2 m), θ is the launch angle (45°), g is the gravitational acceleration (approximately 9.8 m/s²), and v is the initial velocity which we're trying to find out. From this, we can calculate the frog's launch speed as approximately 4.8 m/s.

The second part of the question asks for the time the frog spends in the air. This duration is known as the time of flight. To calculate this, we can use the formula t = (2*v*sin(θ)) / g. Substituting the known values into this equation, we get the time spent in the air as approximately 0.7 seconds.

https://brainly.com/question/29545516

#SPJ12

The velocity vector of a rising tennis ball is directed upward, while the acceleration vector is directed downward due to gravity slowing the ball down as it reaches its peak.

The velocity and acceleration vectors of a tennis ball that is rising upward towards its highest point in its motion can be defined by first understanding that acceleration is a vector in the same direction as the change in velocity. As the tennis ball is moving upwards, its velocity vector is directed upward. However, understanding that acceleration is the rate of change of velocity, the acceleration vector is directed downward because the ball is slowing down as it reaches its highest point, hence the gravity is acting downwards causing its speed to decrease. Therefore, the correct answer is d. Both A & C.

https://brainly.com/question/40191699

#SPJ12

In the case of a tennis ball rising towards its peak, the velocity vector points upward while the acceleration vector due to gravity, points downward.

When a tennis ball is rising towards its highest point above the ground, the velocity vector is directed upward because the ball is moving in an upward direction. Thus, the answer 'A' is correct. However, the acceleration vector is directed downward, as the downward force of gravity is acting on the ball at all times, causing a constant acceleration downward, even when the ball is moving upward. Thus, the answer 'C' is also correct. Therefore, in this scenario, for both 'A' and 'C', the velocity vector is directed upward and acceleration is directed downward, true.

https://brainly.com/question/14683118

#SPJ12

Answer:

It is a closed circuit.

Answer: 13 Hz

Explanation:

The frequency [tex]f[/tex]  of a wave is expressed as:  

[tex]f=\frac{1}{T}[/tex]  

Where [tex]T[/tex] is the period of the wave

If we are told the period is 0.077 s, then its frequency is:

[tex]f=\frac{1}{0.077 s}[/tex]  

[tex]f=12.98 Hz \approx 13 Hz[/tex]  

Answer:

c Gram

Explanation:

Mass is an intrinsec property of every object; it is somehow a measure of the "amount of matter" contained in the object.

The SI units of the mass is the kilogram (kg), where one of the sub-multiple of the kilogram is the gram (g). For measuring small objects, therefore, the gram is the appropriate unit.

The other units are wrong because:

- The meter is the unit of measure of the length

- The liter is a unit of measure for the volume

- Newton is the unit of measure for the force

Answer:

Shorter the wavelength, the higher the frequency of the electromagnetic wave, and greater is the energy of the waveform or the photon. Frequency is always inversely related to the wavelength.

Explanation:

it is on google

Answer:

Shorter frequency mean the sounds lower but this doesn't mean smaller the the answer is greater or stronger

Answer:

the liquid acid

Explanation:

This because electrolytes are supposed to be in a liquid form.

Answer:

Liquid Acid

Explanation:

The wet cell battery implies that it has an liquid inside.

The Copper and the Zinc are also the  compounts that will react in the battery as the semi-reactions implies:

Cu2+(aq) + 2e- --> Cu0

Zn2+(aq) + 2e- --> Zn0

The electrolyte is a substance present in the battery that will help the electricity to flow to the ion of interest and will not participate in the reaction, the acid should work as the electrolyte in this case.

Answer: 9.9 seconds

Explanation:

that's just how long it takes

To hit the ground it takes approximately 3.19 seconds for the rock to hit the ground when dropped from a 55-meter cliff.

To calculate the time it takes for the rock to hit the ground when dropped from a certain height, we can use the kinematic equation for free fall:

ℎ = 1/2 gt2

Where:

h is the height of the cliff (55 m in this case).

g is the acceleration due to gravity ( 9.8 m/s2 approximately on the surface of the Earth).

t is the time we're trying to find.

Rearranging the equation to solve for t:

t =[tex]\sqrt{ 2h / g}[/tex]

​Plugging in the values:

t =[tex]\sqrt{ 2(55)m / 9.8m/s²}[/tex]

Calculating this:

t≈3.19s

So, it takes approximately 3.19 seconds for the rock to hit the ground when dropped from a 55-meter cliff.

To know more about free fall

https://brainly.com/question/12167131

#SPJ3

Answer: The amount of air gradient.

Explanation:

Answer:

Pretty sure the answer is air gradient

Explanation:

Final answer:

The distance between the two airplanes after 1.5 hours is 255 m.

Explanation:

To find the distance between the two airplanes after 1.5 hours, we first need to determine the displacement of each airplane. Displacement is a vector quantity that represents the change in position. We can calculate the displacement of the first airplane using the equation:

Displacement = Velocity × Time

Substituting in the given values:

Displacement1 = (740 m/h) × (1.5 h) = 1110 m

Similarly, we can calculate the displacement of the second airplane:

Displacement2 = (570 m/h) × (1.5 h) = 855 m

Finally, we can find the distance between the two airplanes by subtracting the displacements:

Distance = Displacement1 - Displacement2 = 1110 m - 855 m = 255 m

Using the kinematic equation v = u + at, the man's new velocity is found to be 9.5 m/s after accelerating at 3 m/s² for 2.5 seconds.

To calculate the new velocity of the man after accelerating, we apply the basic kinematics equation v = u + at, where:

Given that the man's initial velocity (u) is 2 m/s, acceleration (a) is 3 m/s², and the time (t) is 2.5 seconds, we substitute these values into the equation:

v = 2 m/s + (3 m/s²)(2.5 s)

This yields:

v = 2 m/s + 7.5 m/s

The new velocity of the man is:

v = 9.5 m/s

Elements with few valence electrons are found in the alkali metals (group 1) and alkaline earth metals (group 2) on the left side of the periodic table. They tend to lose electrons to form positively charged ions and have one or two valence electrons respectively.

Elements with few valence electrons are found on the left side of the periodic table. Specifically, the alkali metals in group 1 each have only one valence electron, while the alkaline earth metals in group 2 each have two valence electrons. As you move from left to right across a period, the number of valence electrons increases until you reach the noble gases, which have full valence shells and are highly stable and non-reactive.

Valence electrons are the electrons in the outermost shell, and they play a key role in determining an element's chemical properties. These electrons can either be lost, gained, or shared to achieve a full valence shell, mimicking the electron configuration of the nearest noble gas. This behavioral pattern results in the formation of either positively charged ions when electrons are lost or covalently bonded structures when electrons are shared.

Power required for motor to raise elevated weighing 1500 newton for a distance of 3 meter in 50 second is 90 watt.

Solution:

By using power force formula,  

Power is obtained by multiplying force and velocity

[tex]\text { Power }=\text { Force } \times \text { Velocity }[/tex]

Velocity can be calculated by dividing distance by time.

[tex]\begin{array}{l}{\text {Velocity}=\frac{\text {Distance}}{\text {Time}}} \\ {\text {Power}=\text {Force} \times \frac{\text {Distance}}{\text {Time}}}\end{array}[/tex]

So for a force of 1500 newton with distance 3 meter for a time period  50 second, power is given as,

[tex]\text { Power }=1500 \times \frac{3}{50}=150 \times \frac{3}{5}=30 \times 3 = 90[/tex]

Power = 90 watt

Answer: [tex]26\ \frac{m}{s}[/tex]

Explanation:

His new velocity is the "Final velocity". In order to calculate it, you need to use the following formula:

[tex]V_f=V_0+at[/tex]

Where [tex]V_f[/tex] is the Final velocity, [tex]V_0[/tex] is the Initial velocity, [tex]a[/tex] is the acceleration and [tex]t[/tex] is the time.

Based on the information provided in the exercise, you can identify that:

[tex]V_0=18\ \frac{m}{s}\\\\a=4\ \frac{m}{s^2}\\\\t=2\ s[/tex]

Therefore, you can substitute values into the formula:

[tex]V_f=18\ \frac{m}{s}+(4\ \frac{m}{s^2})(2\ s)\\\\V_f=26\ \frac{m}{s}[/tex]

Then, his new velocity is [tex]26\ \frac{m}{s}[/tex]

Answer: A. a study of different surfaces to compare luster or shine

Explanation:

A qualitative data can be define as the data that can only be observed and recorded but it cannot be counted in numbers. This type of data cannot be measured in units. For example, color.

A is the correct option. This is because of the fact that luster and shine can only be observed it cannot be measured in units and counted in numbers. It just represents the physical observable property of a material.

Answer:

On 2 October 1836, the Beagle entered the English port of Falmouth after a voyage which had lasted for four years, nine months and five days.

The Beagle voyage from Tahiti to Falmouth, England took five years.

The Beagle took five years to sail from Tahiti back to Falmouth, England as part of Charles Darwin's famous voyage on the HMS Beagle from 1831 to 1836.

Answer:

[tex]2.1875 ms^{-2}[/tex]

Explanation:

Newton's second law: [tex]F=ma[/tex] Let's substitute and solve for whatever is left behind:[tex]7.0N= 3.2kg *a[tex]a =\frac {7.0}{3.2} \frac{N}{kg} = 2.1875 \frac{kg\frac{m}{s^2}}{kg}=2.1875 \frac{m}{s^2}[/tex]

The value of acceleration of the airplane is [tex]2.19 \;\rm m/s^{2}[/tex].

Given data:

The mass of propeller model is, m = 3.2 kg.

The net force on the propeller model is,  F = 7.0 N.

Apply the Newton's second law, which says that the applied force on an object is equal to the product of mass of object and acceleration of object, caused due to applied force.

Then the expression is,

[tex]F = m \times a[/tex]

here, a is acceleration.

Solving as,

[tex]7 = 3.2 \times a\\a=2.19 \;\rm m/s^{2}[/tex]

Thus, the required value of acceleration of the propeller model is [tex]2.19 \;\rm m/s^{2}[/tex].

Learn more about the Newton's second law here:

https://brainly.com/question/13447525

Answer:

10m/s to the right

Answer: 10 m/s to the right

Explanation: Velocity is both speed AND Direction.

Answer:

12

Explanation:

x = 5 (t − 2) + 6 (t − 2)²

x = 5t − 10 + 6 (t² − 4t + 4)

x = 5t − 10 + 6t² − 24t + 24

x = 6t² − 19t + 14

Velocity is the derivative of position with respect to time:

v = dx/dt

v = 12t − 19

Acceleration is the derivative of velocity with respect to time:

a = dv/dt

a = 12

The particle's acceleration is constant at 12 (use appropriate units).

Answer:

i think the answer to this is D

Answer:

Turn it to a smaller face.

(D) is correct option.

Explanation:

Pressure :

Pressure is the inversely proportional to the area.

When the area of the block of face small then the pressure will be increases if the area of the block of face larger then the pressure will be reduce.

Pressure is equal to the force upon area.

In mathematically term,

[tex]P=\dfrac{F}{A}[/tex]

Where, F = force

A = area

P = pressure

Hence, Turn it to a smaller face.

Answer:

C. 1.4 m/s

Explanation:

Energy is conserved:

Initial energy = final energy

At P, the pendulum has only gravitational potential energy.

At Q, the pendulum has only kinetic energy.

PE = KE

mgh = ½mv²

v = √(2gh)

Given h = 0.1 m:

v = √(2 × 9.8 m/s² × 0.1 m)

v = 1.4 m/s

Answer:

1.4

Explanation:

Answer: 1 kilometer = 1,000 meters

Explanation:

The decimal metric system is the predecessor of the International System of Units (SI) and consists of a system in which the multiples and submultiples of the unit of measure are related to each other by multiples or submultiples of ten (10).

It should be noted that this system was created to be neutral and that it could be easily used, understood and adopted by all countries. However, so far only the United States, Myanmar (Burma) and Liberia have retained their traditional units of measurement instead of the Decimal Metric System, which was then replaced by the current SI.

In this sense, two main basic units of this system are the meter (to measure length) and the gram (to measure mass). In the specific case of the meter there are submultiples of the same nature that follow a decimal scale, for example:

[tex]1km = 10^{3} m = 1000m[/tex]

Therefore, among the given options, the one that fulfills the explained conditions is 1 kilometer = 1,000 meters

The other options do not follow a decimal system.

Final answer:

The decimal system of measurement is represented by the option '1 kilometer = 1,000 meters' because it follows the base ten structure of the metric system, where conversions are based on powers of ten.

Explanation:

The decimal system of measurement is exemplified by the base ten structure, which is integral to the SI or metric system. Of the options provided, 1 kilometer = 1,000 meters represents a decimal system of measurement, as it’s based on a multiple of ten, specifically 103 or one thousand. This system is characterized by the ease of conversion among different units of measurement using powers of ten. In comparison, other measurements listed, such as quarts to fluid ounces, miles to feet, and pounds to ounces, are based on the English system, which uses different conversion factors that are not consistently multiples of ten.