Is CO2 a metal or nonmetal

The ball will travel more distance when projected or kicked at an angle of 35 degrees.

The range of the projectile or the horizontal distance traveled by the ball is calculated by applying the following kinematic equation as shown below.

R = ( u² sin (2θ ) ) / g

where;

The horizontal distance traveled by the ball when projected at 35 degrees is calculated as;

R = ( 13.9² x sin ( 2 x 35 ) ) / ( 9.8 )

R = 18.53 m

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To find the period of oscillation of a mass on a spring moving in SHM, we can use the equations for velocity and period in SHM. We can set up equations using the given information and solve for the angular frequency, then use the equation for period to find the answer. In this case, the period is 4.4 s. The correct answer is D. 4.4 s.



We can use the equation for velocity in SHM:
v = ±ω√(A^2 - x^2)
where v is the velocity, ω is the angular frequency (2πf), A is the amplitude (maximum displacement), and x is the displacement from equilibrium.
We can use the given information to set up two equations:
6 = ±ω√(16 - x^2)
1 = ±ω√(25 - x^2)
Squaring both sides of each equation and adding them together, we get:
36 + 1 = ω^2(16 - x^2) + ω^2(25 - x^2)
37 = 41ω^2 - ω^2x^2
Solving for ω, we get:
ω = √(37/(41 - x^2))
Using the equation for period in SHM:
T = 2π/ω
we can find the period:
T = 2π/√(37/(41 - x^2))
Substituting x = 4 and x = 5, we get:
T = 4.4 s
Therefore, the main answer is D. 4.4 s.

Summary: To find the period of oscillation of a mass on a spring moving in SHM, we can use the equations for velocity and period in SHM. We can set up equations using the given information and solve for the angular frequency, then use the equation for period to find the answer. In this case, the period is 4.4 s.

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Explanation:

KE = 0.5mv² = 0.5(50kg)(8.97m/s)² = 2,009.5J.

PE = mgh = (50kg)(9.81N/kg)(1m) = 490.5J.

You can see that the total mechanical energy (ME) is the sum

The color of visible light that would have the least energy is red. On the other hand, the color of visible light that would have the most energy is violet.

This is because red light has the longest wavelength and the lowest frequency out of all the colors in the visible spectrum. Violet light has the shortest wavelength and the highest frequency out of all the colors in the visible spectrum.

This relationship between wavelength, frequency, and energy can be explained by the relationship between electromagnetic waves and energy. All electromagnetic waves, including visible light, have a certain amount of energy that is proportional to their frequency. The higher the frequency, the more energy the wave has.

This relationship can also be seen in the electromagnetic spectrum, where higher energy waves (such as X-rays and gamma rays) have shorter wavelengths and higher frequencies, while lower energy waves (such as radio waves) have longer wavelengths and lower frequencies.

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Answer:

Explanation:

The equation for acceleration is

\(a=\frac{v_f-v_0}{t}\) where vf is the final velocity and v0 is the initial velocity. For us, the final velocity is 25 m/s and the initial is 0 because the train started from resting position. Filling in and solving for a:

\(a=\frac{25-0}{30.0}\) so

a = .83 m/s/s

Answer:

the maximum height reached by the object from where it was launched is 0.4591 m

Explanation:

initial speed of the object, u= 3 m/s

The velocity at the maximum height will always be 0.

Therefore,  final velocity, v= 0 m/s  

Using the Newton's  equation of motion,

v^2 - u^2 = 2*g*h(max)

0 - u^2= 2*g*h(max)

h(max) = -u^2 /2* g

where g is the gravitational acceleration.

g= - 9.8 m/s^2

substituting the values in equation,

h(max)= - (3*3) / 2*(-9.8)

h(max) =  0.4591 m

the maximum height reached by the object from where it was launched is 0.4591 m

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Answer:

decrease

Explanation:

because it’s going to 180 meaning it’s becoming equal to the other and they cancel out

The exponential form of the given number is (-7)⁴. 6⁵.

Exponent is the term used to describe a way to represent huge numbers using powers. In other words, the exponent describes how many times a number has been multiplied by itself.

A number that appears as a superscript over another number is the exponent. In other words, it means that the base has been elevated to a particular level of power. Other names for the exponent are index and power. mn indicates that m has been multiplied by itself n times if m is a positive number and n is its exponent which can be said as the m raised to n.

The given numbers are,

(-7) . (-7) . (-7) . (-7) . 6. 6 . 6 . 6 . 6

So, 7 is multiplied by itself 4 times and 6 is multiplied by itself 5 times.

Therefore, it can be written in the exponential form as,

(-7)⁴. 6⁵

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Answer:The energy of nuclear fission is released as kinetic energy of the fission products and fragments, and as electromagnetic radiation in the form of gamma rays; in a nuclear reactor, the energy is converted to heat as the particles and gamma rays collide with the atoms that make up the reactor and its working fluid.

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Explanation:

A micrometer is a measuring device or an instrument which is used to measure very minute measurements very accurately and precisely. It is mathematical tool used to provide accurate measurement for any mechanical components.

Now, if the micrometer that I have found is badly bent, it would provide faulty or wrong measurements both in terms of  precision and accuracy when compared to a high quality meter stick.

Answer:

Weightlessness is simply a sensation experienced by an individual when there are no external objects touching one's body and exerting a push or pull upon it.

Answer:

Weightlessness is simply a sensation experienced by an individual when there are no external objects touching one's body and exerting a push or pull upon it. ... When in free fall, the only force acting upon your body is the force of gravity - a non-contact force.

"In a tide pool, you find a sea star with four regular length arms and one very short arm. is given below.A sea star with four regular length arms and one very short arm can be suffering from a developmental issue, injury, or a natural occurrence like autotomy.

It might have been caused by a predator attack, an infection, or genetic variations. A sea star can regrow an arm if it loses one, but it takes time, and it won't grow back to the same size immediately. As a result, the short arm may be new growth or a damaged or decaying limb that has been regrown.Autotomy refers to the self-amputation of a limb by an animal. Many animals utilize autotomy as a defense mechanism. For example, when an animal is being threatened, the predator may grab hold of one of its legs, and the animal will shed the leg to escape.

The lost limb will regrow later, and the animal can even regenerate lost body parts.Likewise, in the case of sea stars, autotomy may occur when they are threatened or when they detect an unfavorable environment. A sea star may shed one or more of its arms, which will grow back later. The discarded arms can continue to move around for hours or even days after being discarded. Hence, a sea star with four regular length arms and one very short arm may be a result of autotomy, developmental issues, injury, or genetic variations.

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The location problem that the Astrolabe helped solve is that "the astrolabe could determine the correct latitudinal location of the ship." (option B)

Between 220 and 150 BC, Apollonius of Perga constructed an early astrolabe, which was generally credited to Hipparchus. The astrolabe was a hybrid of the planisphere and the dioptra, essentially an analog calculator capable of solving a variety of astronomical issues.

An astrolabe is a portable replica of the universe that was used in ancient astronomy. Its multiple capabilities also make it an elaborate inclinometer and an analog calculating instrument capable of solving a variety of astronomical difficulties.

One among these was the astrolabe, a portable navigational aid used by sailors. The astrolabe assisted in determining latitude by measuring the distance of the sun and stars above the horizon.

The term "astrolabe" is derived from the Arabic phrase "star keeper." Although it is supposed to have originated in Ancient Greece, it was developed in the Islamic world. The earliest surviving astrolabe was created in the year 927 CE in Iraq.

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The two frequencies commonly used for most wireless networks are 2.4 GHz and 5 GHz.

Wireless networks, such as Wi-Fi, utilize specific frequencies within the electromagnetic spectrum to transmit data wirelessly. The 2.4 GHz and 5 GHz frequencies are the most widely used for wireless networking.

The 2.4 GHz frequency band has been used for a long time and is compatible with a wide range of devices. It offers good signal coverage and can penetrate obstacles relatively well. However, this frequency band is also shared with other devices, such as Bluetooth devices and household appliances, which can cause interference and potentially impact the network performance.

On the other hand, the 5 GHz frequency band provides higher data transfer rates and less interference compared to the 2.4 GHz band. It offers more available channels for devices to communicate and is ideal for applications that require higher bandwidth, such as video streaming and online gaming. However, the 5 GHz signal has a shorter range and may encounter more signal attenuation when passing through walls and other obstacles.

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To measure the speed of an animal, you would need to follow these steps:

1. Choose a suitable location: Find a flat, straight path where the animal can move without any obstacles or distractions.
2. Mark the start and end points: Define a specific distance for the animal to travel, and mark the start and end points. This distance will be used to calculate the speed.
3. Time the movement: Use a stopwatch to measure the time it takes for the animal to travel from the start point to the end point.
4. Record the data: Note down the time taken by the animal to cover the distance.
5. Calculate the speed: Speed can be calculated using the formula, Speed = Distance / Time. Divide the distance by the time taken to get the speed of the animal.
6. Repeat the process: To obtain more accurate results, you should repeat the experiment several times and calculate the average speed.

In summary, to measure the speed of an animal, you need to select a suitable location, mark the start and end points, time the movement, record the data, and calculate the speed using the formula, Speed = Distance / Time. Repeat the process to ensure accuracy and obtain an average speed value.

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Answer:

Um, wrong.

Explanation:

The Helioentric model is correct. We orbit the sun. The GEOcentric model is incorrect. The Universe does not orbit the Earth. What are you learning?

Answer:

(B)   hot air is lighter than cold air

P V = N R T       ideal gas equation

If T (temperature) is smaller then N (number of moles) must be larger if other quantities remain constant,

The statement "topping off when filling up your gasoline tank helps lower emissions" is FALSE.

When we fill our gasoline tanks, there is often a natural tendency to squeeze the handle for just a little bit longer to make sure that the tank is completely full, or to round up to the nearest dollar amount. This is referred to as "topping off," and it is not a good practice because it is unnecessary and can cause more harm than good.

Firstly, topping off isn't necessary because modern gas pumps are equipped with automatic shut-off valves that prevent gasoline from being dispensed once the tank is full. Topping off your tank also means you're running the risk of overfilling the gas tank, which can cause fuel spills to occur. When fuel spills occur, they can evaporate into the air and contribute to ground-level ozone formation and smog.

Furthermore, when gasoline spills onto the ground, it can also contaminate nearby water sources and harm wildlife. Finally, excess fuel can build up in the engine's evaporative emissions control system when a tank is overfilled. This can result in a malfunctioning emission control system, which can ultimately lead to increased air pollution and smog formation.

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The sort of human activities that are contributing to the increase in carbon dioxide is industrial activities, forest cutting, cars, and vehicles.

Natural processes such as organism respiration, decomposition, volcanic eruptions, and weathering of carbonated rocks all contribute to an increase in atmospheric carbon dioxide levels.

The manufacturing of cement and other man-made materials, along with urbanization, deforestation, and changes in vegetation patterns that alter the reflectance of the earth's surface, are increasing atmospheric carbon dioxide levels.

Therefore, industrial operations, logging, cars, and other vehicles are the kinds of human activities that are causing an increase in carbon dioxide.

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Answer:

The scale would exert a force of approximately 519.4 Newtons on the 53 kg person standing on it while the elevator is in motion at a constant speed of 2.0 m/s.

Explanation:

The gravitational force acting on the person can be calculated using the formula: force = mass * acceleration due to gravity.

Given that the mass of the person is 53 kg, and the acceleration due to gravity on Earth is approximately 9.8 m/s², we can calculate the force:

force = 53 kg * 9.8 m/s² = 519.4 N.

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Question: A 2.0 kg sphere with a velocity of 6.0 m/s collides head-on and elastically with a stationary 10 kg sphere, What is thier velocities after collision.

Answer:

v = 6 m/s, v' = 0 m/s

Explanation:

From the question,

For Elastic collision,

mu+m'u' = mv+m'v'......................... Equation 1

Where m = mass of the first sphere, m' = mass of the second sphere, u = initial velocity of the first sphere, u' = initial velocity of the second sphere, v = final veolocity of the first sphere, v' = final velocity of the second sphere.

Also,

The relative velocity before collision = relative velocity after collision

u-u' = v-v'............................ Equation 2

Given:  m = 2 kg, m' = 10 kg, u = 6 m/s, u' = 0 m/s

Substitute into equation 1 and 2

2(6)+10(0) = 2v+10v'

2v+10v' = 12.............. Equation 3

6-0 = v-v'

v-v' = 6 ................... Equation 4

Solve equation 3 and 4 simultaneously.

v = 6+v'............. Equation 5

Substitute equation 5 into equation 3

2(6+v')+10v' = 12

12+2v'+10v' = 12

12v' = 12-12

v' = 0/12

v' = 0 m/s.

Also substitute the value of v' into equation 5

v = 6+0

v = 6 m/s

The charge on each of the equally charged drops of hairspray willl be 7 × 10 ⁻¹³ C

The force of attraction between two charges, according to Coulomb's law, is directly proportional to the product of the charges and inversely proportional to the square of the distance between them.

Similar charges repel each other, whereas charges that are opposed attract each other.

Given data;

Electric force,F = 9 × 10 ⁻⁹ N

Distance between charges,d = 7 × 10⁻⁴ m

Chrge,q₁ = q₂ =q C

From Columb's law;

\(\rm F = K \frac{q_1q_2}{d^2} \\\\ 9 \times 10^{-9} = 9 \times 10^9 \frac{q^2}{(7 \times 10^{-4})^2} \\\\ q^2 = 4.9 \times 10^{-25} \\\\ q = 7 \times 10^{-13} \ C\)

Hence the charge on each of the equally charged drops of hairspray willl be 7 × 10 ⁻¹³ C

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Answer:

t = 1.659s

Explanation:

We can use the kinematics equations to solve this questions:

v = u + at

\(v^{2} = u^{2} +2as\)

where v = Final Velocity, u = initial velocity, a = acceleration, t = time, s = displacement

a) Given information from the question,

u = \(\frac{70km}{h} =\frac{(70*1000)m}{(1*3600)s} = 19.444m/s\) (Convert km/h to m/s first)

a = \(2m/s^{2}\)

s = 35m

Now we can substitute these values into the 2nd kinematics equation to find v, final velocity.

\(v^{2} =(19.444)^{2} +2(2)(35)\\v=\sqrt{(19.444)^{2} +2(2)(35)} \\v= 22.761m/s (5.sf)\\\)

b) Now we have the final velocity, we can substitute the values into the first kinematics equation to find t , the time taken.

v = u + at

22.761 = 19.444 + 2t

2t = 22.761 - 19.444

t =\(\frac{22.761-19.444}{2}\)

t = 1.659s

Two positive points charges repel each other with force 0.36 N when their separation is 1.5 meter . Then the force exerted by two charges when the distance is 1.0 meter is 0.8 N.

Calculation:

R1 = 1.5 meter

R2 = 1 meter

F1 = 0.36 N

F1/F2 = R2^2/R1^2

F2 = R1^2/R2^2 × F1

F2 = 2.25 / 1 × 0.36

F2 = 0.81

Electrostatic force is type of force which act between two charges it is  repulsive or attractive in nature.  If both charge in same type then it will be repulsive and when both are in opposite nature then it will be attractive in nature.

Mathematically,

F = k× Q1× Q2/r^2

So,

In above problems

R1 = 1.5 meter

R2 = 1 meter

F1 = 0.36 N

F1/F2 = R2^2/R1^2

F2 = R1^2/R2^2 × F1

F2 = 2.25 / 1 × 0.36

F2 = 0.81

Therefore, Two positive points charges repel each other with force 0.36 N when their separation is 1.5 meter . Then the force exerted by two charges when the distance is 1.0 meter is 0.8 N.

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The further a planet is from the Sun, the colder its surface temperatures tend to be. Venus is an exception, since it has the highest surface temperature in our solar system due to its close closeness to the Sun and its thick atmosphere.

The inner planets are rocky, whereas the outer planets are gaseous, which can be attributed to the early solar system's temperature. The solar system's temperature increased as the gases came together to create a protosun. Temperatures in the inner solar system reached 2000 K, whilst in the outer solar system, it was only 50 K.

The quantity of heat received is just one of many intricate aspects that go into determining the temperature.

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Answer:

4.489 m/s

Explanation:

We are given;

Length of rod;L = 51.4 cm = 0.514 m

When the ball is at the top end, it's velocity will be zero and it's kinetic energy will be transformed to potential energy.

Thus; ½mv² = mgh

m will cancel out to give;

v² = 2gh

Where:

g is acceleration due to gravity = 9.8 m/s²

h is the maximum height of the ball which is equal to twice the length of the rod.

Thus, h = 2(0.514) = 1.028 m

v² = 2 × 9.8 × 1.028

v = √20.1488

v = 4.489 m/s

The magnitude of the net force on the block while it is sliding is 9.8 N.

The angle of inclination of the plane is calculated by applying the principle of trigonometry ratio.

Considering the vertical height (10 m) and length of the incline (20 m);

sin θ = 10 m / 20 m

sin θ = 1/2

sin θ = 0.5

θ = arc sin(0.5)

θ  = 30⁰

The magnitude of the net force on the block while it is sliding is calculated as follows;

F(║) = F(net) = mg sinθ

where;

F(net) = (2 x 9.8) x sin(30)

F(net) = 9.8 N

Thus, the net force on the block is the parallel component of the weight of the block.

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Answer:

Precipitation static is an electrical charge on an airplane caused by flying through rain, snow, ice, or dust particles. Charge also accumulates through friction between the aircraft hull and the air. When the aircraft charge is great enough, it discharges into the surrounding air.

Explanation:

I hope this helps!

The total metabolic energy used by each to complete the course is determined as 656.91 J.

The kinetic energy of Jessie and Jaime is calculated as follows;

K.E = ¹/₂mv²

where;

15 km/h = 4.17 m/s

5 km/h = 1.39 m/s

K.E = ¹/₂(68)(4.17)² + ¹/₂(68)(1.39)²

K.E = 656.91 J

Thus, the total metabolic energy used by each to complete the course is determined as 656.91 J.

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