a box with a mass of 0.82 kg has these forces acting on it 9.5 N to the right 6.2 N to the left 8.0 N up and 8.0 N down What is the strength and direction of the acceleration of the box?

Answer:

Hockey

Explanation:

plz mark on brainlist:)

Answer:

15 kg ball

Explanation:

The distance between one point in a wave and the nearest point just like it is called the wavelength.

In other words, wavelength is the distance between two consecutive crests or troughs of a wave. It is usually represented by the Greek letter lambda (λ).

The wavelength of a wave depends on the frequency and the velocity of the wave. Frequency refers to the number of waves that pass a given point in a given amount of time. Velocity, on the other hand, refers to the speed at which the wave travels. The relationship between wavelength, frequency, and velocity is given by the formula λ = v/f, where λ is wavelength, v is velocity, and f is frequency.

Wavelength is an important characteristic of waves and is used to classify them. For example, radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays all have different wavelengths and frequencies. The study of the properties and behavior of waves is called wave mechanics, and it has important applications in fields such as physics, engineering, and telecommunications.

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When the skater starts 7 m above the ground, the potential energy of the skater is higher than when the skater starts 4 m above the ground.

As the skater moves down the track, this potential energy is converted into kinetic energy, which is proportional to the square of the skater's velocity. Therefore, when the skater starts 7 m above the ground, they will have a higher velocity at the bottom of the track compared to when they start 4 m above the ground. This is because the skater has more potential energy to convert into kinetic energy, resulting in a faster speed at the bottom.
When a skater starts at a higher position, their potential energy is greater. In both cases, the potential energy is converted into kinetic energy as the skater descends. The formula for potential energy is PE = mgh, where m is the mass of the skater, g is the acceleration due to gravity, and h is the height above the ground. Since the skater starting at 7 m has a higher initial potential energy than the one starting at 4 m, they will have a greater kinetic energy at the bottom of the track, resulting in a higher speed.

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Given:

ratio of energy is 2√2 : √3

Apply:

Where:

q = charge of proton

v= speed of proton

r= radius of circular path

T= time period of revolution

Kinetic energy (K)

K= 1/2mv^2

From both equations:

Tα1/k

K1:K2 = 2√2 : √3

T1:T2 = √3:2√2

Answer: √3:2√2

Answer:

b. 46 km/hr

Explanation:

Applying,

S' = d'/t'................... Equation 1

Where S' = Average speed of the bus, d' = Total distance covered by the bus, t' = Total time taken.

From the question,

d' = (100+55+75) km = 230 km

t' = (2+1+2) = 5 hours

Substitute these values into equation 1

S' = 230/5

S' = 46 km/hr.

Hence the correct option is b. 46 km/hr

According to the given statement Mrs. Brown's electricity bill for the current month is $5000.00.

To calculate Mrs. Brown's electricity bill for the current month, we need to determine the total number of kilowatt-hours (kWh) she has consumed and apply the corresponding rates.

1. Calculate the electricity usage:

  Current meter reading - Previous meter reading
  20,300 kWh - 17,800 kWh = 2,500 kWh

2. Determine the cost for the first 2000 kWh:

  $1.00/kWh * 2000 kWh = $2000.00

3. Determine the cost for the remaining kWh:

  500 kWh * $3.50/kWh = $1750.00

4. Add the fuel adjustment charge:

  $0.50/kWh * 2500 kWh = $1250.00

5. Calculate the total bill:

  $2000.00 + $1750.00 + $1250.00 = $5000.00


To calculate the electricity bill, we first find the difference between the current and previous meter readings.

In this case, Mrs. Brown used 2,500 kWh.

For the first 2000 kWh, the cost is $1.00 per kWh, resulting in a charge of $2000.00.

For the remaining 500 kWh, the cost is $3.50 per kWh, totaling $1750.00.

Additionally, a fuel adjustment charge of $0.50 per kWh is added to the bill. This amounts to $1250.00.

Finally, we add up all the charges to get the total bill, which is $5000.00.

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The circulation of the line vortex is 4 m/s.  

In a line vortex, the circulation is defined as the product of the velocity of the fluid and the distance from the center of the vortex. To find the circulation of a line vortex, we need to know the velocity of the fluid at a given distance from the center of the vortex.

Assuming that the downward velocity at a point 2 meters orthogonally from the line vortex is 2 m/s, we can use the equation for the velocity of the fluid in a line vortex to find the circulation:

Circulation = 2 * r

where r is the distance from the center of the vortex.

In this case, the velocity of the fluid is 2 m/s and the distance from the center of the vortex is 2 meters. Plugging these values into the equation, we get:

Circulation = 2 * 2 = 4 m/s

Therefore, the circulation of the line vortex is 4 m/s.  

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The beat frequency is 3 beats/sec.

Beat frequency(n) can be found by using the following formula:

n=f2-f1, where f2 and f1 are the given frequencies

n= 515-512

n= 3 beats/sec

Therefore the beat frequency when 512 Hz and 512Hz tuning forks are sounded together is 3 beats/sec.

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The matter in the accretion disc is heated to extremely high temperatures, which ultimately lead to the emission of photon radiations, as the speed of the infalling particles becomes more random or chaotic.

We are aware that disordered microscopic particle motion, as defined, is thermal motion and is hence directly related to temperature. The most significant features in the universe are accretion discs, which can be found even in tight binary stars, surrounding smaller stars or stellar remnants, in spiral galaxy centers, in quasars, and they can even form in gamma-ray bursts. The shape of the accretion disc might vary. It could be planar or spherical.

They are bumping into other gas particles as they move. As a result, the movement's direction changes, and it now moves randomly. Particles that are travelling at random make up gas.

They are bumping into other gas particles as they move.

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The gas has a higher density of bigger particles. The motions of an accretion disc are easier on smaller particles than on larger ones. The density of the material (also known as its specific mass).

Mass in volume per unit. Although density can also be symbolised by the Latin letter D, the most typical mark is (the lower case Greek letter rho). A essential quality of a body is its mass. It was widely believed to be connected to the volume of matter in a physical body before to the atom's discovery and the development of particle physics. Theoretically, the same chemical might be included in different atoms and elementary particles. A essential quality of a body is its mass.

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Answer:

v=s/t

s=vt

t=s/v

t=(120×10‐³)/172.8

(the distance meters has been changed to kilometres)

t=1/1440 hrs

Given ,

your acceleration is approximately 2.27 m/s².The acceleration can be calculated using the formula:

acceleration = force / mass

First, we need to determine the mass. To find the mass, we need to convert the force to mass using Newton's second law:

force = mass * acceleration

Given that the force is 125 N and the friend's mass is 55 N, we can rearrange the formula to solve for mass:

mass = force / acceleration

Substituting the given values, we have:

55 N = 125 N / acceleration

Next, we can solve for acceleration:

acceleration = 125 N / 55 N

Simplifying the expression, we find:

acceleration ≈ 2.27 m/s²

Therefore, your acceleration is approximately 2.27 m/s².

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Answer:

to have courage and show the strength of your character. ... A person with true grit has passion and perseverance. Goals are set and followed through.

Explanation:

for example: i had the passion and the courage to finish my school work and chores for i can go out with my friends and to get out of the house for a bit and have fun so i had the courage to finish chores from the house and do some schoolwork for i can finish ad hang out with some friends. so i had the strength to finish everything because i didn't want to be doing school work and chores any more so i had the passion to finish up quickly  

Answer:

La temperatura final es de aproximadamente 159,94°C

Explanation:

Los parámetros dados son;

La masa de la llave española de acero, m₁ = 200 gramos

La temperatura de la llave, T₁ = 550 ° C

La masa del recipiente de aluminio que contiene agua, m₂ = 250 gramos

La masa del agua en el recipiente de aluminio, m₃ = 220 gramos

La capacidad calorífica específica del hierro, \(C_{planchar}\), c₁ = 0.499 ca/(g·°C)

La capacidad calorífica específica del aluminio, \(C_{Aluminio}\), c₂ = 0.217 cal/(g·°C)

La capacidad calorífica específica del agua, \(C_{Agua}\), c₃= 1 cal/(g·°C)

En equilibrio térmico, tenemos;

m₁·c₁·(T₁ - T) = m₂·c₂·(T -T₂) + m₃·c₃·(T - T₂)

Conectando los valores, da;

200 × 0.499 × (550 - T) = 250 × 0.217 × (T -18) + 220 × 1  × (T - 18)

Simplificando, usando una calculadora gráfica, obtenemos;

\(\dfrac{274450-499\cdot T}{5} = \dfrac{1097 \cdot T-19746}{4}\)

De también encontramos 'T' al convertirlo en el tema de la ecuación anterior aún usando una calculadora gráfica;

T = 1196530/7481 °C ≈ 159.94°C

La temperatura final,T ≈ 159.94°C.

The final temperature, when thermal equilibrium is reached is 144°C.

Given the following data:

To determine the final temperature, when thermal equilibrium is reached:

Mathematically, heat capacity or quantity of heat is given by the formula;

\(Q = mc\theta\)

Where:

At an equilibrium state, the quantity of heat for the three substances is given by the equation:

\(M_kC_k(\theta_2 - \theta_1) = M_aC_a(\theta_2 - \theta_1) + M_wC_w(\theta_2 - \theta_1)\\\\200 \times 0.499 \times (500 - \theta_2) = 250 \times 0.217 \times (\theta_2 - 18) + 220 \times 1 \times (\theta_2 - 18)\\\\99.8(500 - \theta_2) = 54.25(\theta_2 - 18) + 220(\theta_2 - 18)\\\\49900 -99.8\theta_2 = 54.25\theta_2 - 976.5 + 220\theta_2 - 3960\\\\220\theta_2 + 99.8\theta_2 + 54.25\theta_2 = 49900 + 3960\\\\374.05\theta_2 = 53860\\\\\theta_2 = \frac{53860}{374.05}\)

Final temperature, \(\theta_2\) = 143.99 ≈ 144°C

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The probability of collision for two aircraft turning independently at the same altitude at the same time, where the initial position and velocity of the aircraft are unknown, depends on various factors and cannot be determined without additional information.

To compute the probability of collision, several factors need to be taken into account, such as the airspace dimensions, the speed and maneuverability of the aircraft, the presence of air traffic control, and the use of collision avoidance systems. Additionally, if the initial position and velocity of the aircraft are unknown, it further complicates the calculation.

To estimate the probability of collision in such a scenario, statistical models and simulations can be employed. These models consider historical data, flight patterns, and other relevant factors to estimate the likelihood of collision. However, without specific information about the aircraft and the context in which they are operating, it is challenging to provide a precise probability.

It is crucial to ensure that proper safety measures and protocols, including air traffic control and collision avoidance systems, are in place to minimize the risk of collision in any aviation scenario.

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Answer:

Explanation:

There are a couple of assumptions I had to make here and also a couple of rules based on what I use in my classroom when I teach the Law of Momentum Conservation. First of all, I am going to call the 8kg ball 1 and say that it is moving to the right (and right is positive), and that means that the 3kg ball is ball 2 and say that it is moving to the left (and left is negative). I had to assume that the 2 balls were moving towards each other; hence, the different signs assigned to their movement. I also added in another significant digit since we have only 1 in most of these values and adding in a .0 is not going to change the value of any number. The Law of Momentum Conservation in this particular instance says

\([m_1v_1+m_2v_2]_b=[m_1v_1+m_2v_2]_a\) which is the mathematical way of saying that the momentum after the collision is the same as the momentum before it. Filling in:

\([(8.0*4.0)+(3.0*-14)]_b=[(8.0*-2.0)+(3.0*v)]_a\) and doing the math here simplifies to

32 - 42 = -16 + 3.0v and

-10 = -16 + 3.0v and

6.0 = 3.0v so

v = 2.0 (and the positive indicates that ball 2 is now moving to the right)

Answer:

F = 12.5N

Explanation:

Force (F) = Mass (m) x Acceleration (a)

F = ma

F = (2.5kg) x (5m/s^2)

F = 12.5N

It took the wave approximately 3.46 seconds to travel a distance of 225 meters.

To find the frequency of a wave when given the speed and wavelength, we can use the formula:

frequency = speed / wavelength

Substituting the given values into the formula, we get:

frequency = 65 m/s / 0.8 m

frequency = 81.25 Hz

Therefore, the frequency of the wave is 81.25 Hz.

To calculate the time it took for the wave to travel a distance of 225 meters, we can use the formula:

time = distance / speed

Substituting the given values into the formula, we get:

time = 225 m / 65 m/s

time = 3.46 s (rounded to two decimal places)

Therefore, it took the wave approximately 3.46 seconds to travel a distance of 225 meters.

It's important to note that the formulas used assume that the wave is traveling in a uniform medium without any dispersion or other factors that could affect its speed or behavior. In reality, waves can encounter various phenomena that may alter their characteristics.

However, for the purpose of this calculation, we have assumed a simplified scenario where the wave travels at a constant speed and exhibits a single wavelength.

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Answer:

velocity, power, energy, force and density

Explanation:

The set of quantum numbers that is not valid is C) n = 3, l = 2, ml = 3, and ms = 1/2.

The quantum numbers describe the energy, orbital shape, orientation, and spin of an electron in an atom. They must satisfy certain rules and limitations.

In option A) n = 3, l = 0, ml = 0, and ms = 1/2, all the quantum numbers are valid. n represents the principal quantum number, l represents the azimuthal quantum number, ml represents the magnetic quantum number, and ms represents the spin quantum number.

In option B) n = 2, l = 1, ml = -1, and ms = -1/2, all the quantum numbers are also valid.

However, in option C) n = 3, l = 2, ml = 3, and ms = 1/2, the value of ml is not valid. The magnetic quantum number (ml) represents the orientation of the orbital and can have integer values from -l to +l, inclusive. In this case, since l = 2, ml can take values -2, -1, 0, 1, or 2. The value of ml = 3 exceeds this range, making this set of quantum numbers invalid.

Option D) n = 2, l = 1, ml = 0, and ms = -1/2 is a valid set of quantum numbers.

Therefore, the correct answer is C) n = 3, l = 2, ml = 3, and ms = 1/2.

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Answer:

Characteristics that can be inherited is hair color or muscle structure.

Answer:

Below :)

Explanation:

It is the powerhouse of the cell and creates chemical energy.

Answer:

10500 N

Explanation:

F = m*a=1400*7.5N=10500N

Answer:

9/20

Explanation:

According to this question, Lucy and JoJo need to make 140 cupcakes for the school dance. Lucy made 35 of the cupcakes while JoJo made 42 cupcakes. This means that in total, (42 + 35) cupcakes has been made by both Lucy and JoJo

That is, 77 cupcakes out of 140 has been made. This is 77/140 i.e. 11/20

Since 77/140 cupcakes has been made, Lucy and JoJo still need to make;

140 - 77 = 63 cupcakes to meet up their target for the school dance.

This means that the fraction left is 63/140

63/140 in its lowest term is 9/20

Hence, 9/20 of the cupcakes still need to be made by Lucy and JoJo.

Explanation: 140 - 35 = 105 - 42 = 63

yare yare daze

I use tusk act 4 main

Answer:

Thrust acts on the accelerated object in the direction opposite to the applied force hence it accelerates the object in the direction opposite to the applied force. ... Its magnitude is equal to that of applied force. It always increases the velocity of the object.

Explanation:

Answer:

D- fuerza nuclear fuerte

Explanation:

If 60 Joules of energy are applied to the bricks, so   the lever’s efficiency is 60%.

Efficiency is a measure of how well a machine or system transforms input energy into useful output energy. It is a ratio of output energy to input energy. In this case, the team of students builds a lever as a science project. They expend 100 Joules of energy to lift some bricks with the lever. If 60 Joules of energy are applied to the bricks, what is the lever’s efficiency? In this case, we have;

Total input energy, I = 100 J

Total output energy, O = 60 JEfficiency, η = Output energy/Input energyη = O/II = O/ηη = O/I = 60/100 = 0.6

or 60%Therefore, the efficiency of the lever is 60%.

This implies that the lever converts 60% of the input energy to useful output energy. That is, it requires 100 J of input energy to lift the bricks, but only 60 J of energy is applied to the bricks. The remaining 40 J is lost due to friction, air resistance, or other forms of energy dissipation.

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