A 12 N force acts at a 25 degrees and an 8 N force acts at 65 degrees. Determine the magnitude and direction (include angle) of the resultant . Scale is 1cm = 1N
NEEDDD HELLPP ASAPPPPP

Answer:

675N

Explanation:

624 + 51 = 675N

as the floor exerts and an equal and opposite force.

We can calculate the displacement using the following formula:

Answer:

1 m

Since he pilot releases the brakes and he finds that the plane still does not start to move, the  explanation I agree with is option C:

The lift of the airplane is provided by the flow of air around the wings. Additionally, the wings' form contributes to lift. The airplane is being pulled toward Earth by weight. The weight of an airplane is distributed evenly from front to back during construction.

Note that the design of an airplane wing is intended to speed up airflow across the top of the wing. Air pressure decreases when it moves more quickly. Therefore, the pressure at the top of the wing is lower than that at the bottom. The pressure differential exerts a force on the wing, lifting it into the air.

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After being pushed away from the departure gate, an aircraft is standing still with the brakes applied and the engine running on very low. When the pilot releases the brakes he finds that the plane still does not start to move. Here are three explanations for why the plane does not move. Which one do you agree with?

A. When a single force that is too weak acts on an object it will not move. When the pilot releases the brakes the only force acting on the plane is that of the

engines but because this force is too weak, the plane will not move.

B. When the pilot releases the brakes two forces act on it. The engines exert a force in one direction and the ground exerts a force on the wheels in the opposite direction. The plane does not move because the force exerted by the ground on the wheels is stronger than the force of the engines.

C. When the pilot releases the brakes two forces act on it. The engines exert a force in one direction and the ground exerts a force on the wheels in the opposite direction. The plane does not move because the force exerted by the ground on the wheels is the same strength as the force of the engines.

The largest value of w (in N)that they can support as shown in equilibrium.

What is equilibrium?

a State of balance between opposing forces or actions that is either static as in nobody acted on by forces whose resultant is zero or dynamic reaction when the rates of reaction in both differentions are equal.

Sol- the total force in x direction is given as,

€Fx=0

T1 sin 37°=T2 sin 53°

100×3/5 =T/2 ×4/5

T2=75 N

The given total force is-

€Fy=0

T1 cos 37°=T2 cos 53°+W

W=80×4/5 -75×3/5

W=19N

Thus

The largest value of W is 19N.

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ANSWER:

true

STEP-BY-STEP EXPLANATION:

The differences in air pressure that create a sound wave are the result of differences in the velocities of the air particles. Due to the Doppler effect, an observer will hear a sound that moves away from her and has a higher pitch. Sound waves will travel faster on a dry day than on a humid day of the same temperature.

Therefore, the statement is true

the colder air is more dense, then you would go through more mass (density) in a shorter vertical distance,

Explanation

Consider cold and warm air columns with equal weights, and equal amounts of overlying air.

Colder air is denser because the molecules of air are more closely packed together. As a result, pressure decreases more rapidly as you ascend through cold air than through warm air

It takes a shorter column of cold air to exert the same pressure as a taller column of warm air.

so,Since the colder air is more dense, then you would go through more mass (density) in a shorter vertical distance,

Since the load Joe is carrying is equal to the supporting weight, the mass of the load will be 90 Kg

Weight is the gravitational pull of an object under the influence of acceleration due to gravity.

Given that Joe is carrying a load of supplies and likely injuring his back by supporting 882 N of weight.

The load Joe is carrying will be equal to 882 N

To calculate the mass of what he is carrying, let us use the formula

W = mg

Where

882 = 9.8m

m = 882/9.8

m = 90 Kg

Therefore, the mass of what he is carrying is 90 Kg

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Best player in NBA right now Giannis Antetokounmpo.

The National Basketball Association, NBA is a professional basketball league in North America. The league consists of 30 teams and is one of the predominant expert sports activities leagues within the united states of America and Canada. It's far the finest guys professional basketball league within the international.

To sell great aware device of technical education where excellence, relevance to market desires and participation with the aid of all stakeholders are prime and principal determinants.

The NBA is a 70-year-vintage employer born from innovation. It turned into June 1946 in the big apple city while Boston garden owner Walter Brown found out that primary ice hockey arenas, which were vacant maximum nights, will be used to host basketball games.

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Digital manometers can be used to measure liquids, gases, and air, depending on the device. If the instruments have an internal memory, it works quite well.

Pressure Gauge in Psig Pressure as a percentage of the surrounding atmospheric pressure. The gauge pressure for this kind of pressure includes the pressure from the weight of the atmosphere because it is zero-referenced against atmospheric pressure.

These gauges typically have a measurement range of 0… 1 mbar to 0… 600 mbar and an accuracy class of 0.1 to 2.5. Although pressure gauges typically require very minimal upkeep, problems can happen.

Therefore, This tool can be used to measure pressure in a variety of locations. Measurements of negative pressure, overpressure, and differential pressure are all possible.

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A ) The height of cliff from which the cannonball is shot from = 12.72 m

B ) The distance from the base of the cliff = 19.14 m

- H = [tex]u_{y}[/tex] T - 1 / 2 g T²

T = Total time taken

g = Acceleration due to gravity

H = Height above the ground  

[tex]u_{y}[/tex] = Y-component of initial velocity

T = 2.2 s

g = 9.8 m / s²

θ = 30°

u = 10 m / s

[tex]u_{y}[/tex] = u sin θ

[tex]u_{y}[/tex] = 10 * sin 30°

[tex]u_{y}[/tex] = 5 m / s

- H = ( 5 * 2.2 ) - ( 0.5 * 9.8 * 2.2 * 2.2 )

- H = 11 - 23.72

H = 12.72 m

R = [tex]u_{x}[/tex] T

[tex]u_{x}[/tex] = u cos θ

[tex]u_{x}[/tex] = 10 * cos 30°

[tex]u_{x}[/tex] = 8.7 m / s

R = 8.7 * 2.2

R = 19.14 m

Therefore,

A ) The height of cliff from which the cannonball is shot from = 12.72 m

B ) The distance from the base of the cliff = 19.14 m

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Given,

Frequency of the wave, f=4 Hz

The wavelength of the wave, λ=0.5 m

The speed of a wave is given by,

On substituting the known values in the above equation,

Therefore the speed of the standing wave produced is 2 m/s

The location of the centre of the mass of the CO molecule relative to the carbon atom is 6.46 ×10⁻¹¹ m.

The Centre of Mass of that object is a position that is relative to an object or a system of objects. The average position of all parts of the system that are weighted to their masses is known as the Centre of Mass.

Given, the distance between the carbon and oxygen atoms, r = 1.13 ×10⁻¹⁰m.

The ratio of the mass of the carbon and oxygen:

Mc/Mo = 12/16 = 0.750

Consider that Xc is the position of carbon and Xo is the position of the oxygen atom in CO molecule.

The centre of the mass of the system is equal to the:

[tex]X_{co}=\frac{M_CX_C+M_OX_O}{M_C+M_O}[/tex]

[tex]X_{co}=\frac{(M_C/M_O)X_C+X_O}{M_C/M_O+1}[/tex]

As we are calculating the centre of the mass relative to the carbon atom.

Therefore Xc = 0 and Xo= 1.13 ×10⁻¹⁰m.

[tex]X_{CO} =\frac{1.13\times 10^{-10}}{0.750 +1}[/tex]

Xco = 6.46 ×10⁻¹¹ m

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Energy can neither be created nor destroyed. It can only be transferred from one object to another.

Claim 2 is correct.

Energy cannot be created or destroyed. So, objects can not make their own energy.

Energy can be transferred or transformed. Energy can be changed in many ways, such as conversion of kinetic energy into potential energy and vice-versa, when one object moves another object, etc.

For example, to lift an object against the gravity, work is done on the object. This work is converted in the form of potential energy, called as gravitational potential energy. When an object, say an apple falls towards Earth from a tree, gravitational potential energy is converted into kinetic energy.

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The dimension of stress is M1 L-1 T-2  and the unit of frequency is Hz.

What is the frequency?

The frequency with which something happens over a specific time frame or sample

Let us find out the dimension of stress.

Stress = Force/Area      

Force = mass * acceleration

Stress=  M * L * T-2/ L2

Therefore, Stress = M L-1 T-2

As for the second question,

The unit of frequency is Hz (Hertz)

Hence, the dimension of the stress = M L-1 T-2  and the unit of frequency is hertz.

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Answer:

C The two electromagnets will attract; opposite poles attract

Explanation:

Electromagnets behave like regular magnets - they have two poles - positive and negative

Like regular magnets, opposite poles attract, similar poles repel

The minimum force that the contestant must exert to get the block moving is 53.33 N and the acceleration of the block is 0.874m/s² once it starts to move and the force is maintained.

When a force is applied at an angle, the force will have two components, one along the floor and one along the vertical.

If the force is F applied at an angle θ, then the vertical component of force is Fsinθ and the floor component is Fcosθ.

In out case θ = 25°,

A.) There will we a frictional force acting on the body which will be opposite to the component of the force which is along the floor, if the floor component just overcomes the static frictional force than the block will start to move.

So, we can write,

Friction force =  Fcosθ

μN = Fcosθ

where,

μ is the coefficient of static friction,

N is the normal reaction by the floor on the block which would be equal to the mg,

F is the minimum force Applied.

Putting all the values,

(0.1)(10)(48) = (F)(cos25°)

48 = F(0.9)

F = 53.33 Newtons.

B.) When the block will start moving,

There will be a kinetic frictional force on it as well as a Fcosθ on it,

The friction will be opposite direction of the motion, Fcosθ will be in the direction of the motion,

So, we can write, The net force on the body

F = Fcosθ - Fr

F = Fcosθ - μN

F = Fcosθ - umgsinθ

When the box is moving the normal reaction N will be equal to the vertical component of the force,

Here, u is the coefficient of kinetic friction,

Putting all the values,

F = 48 - 0.03x10x48x0.42

F = 48 - 6.048

F = 41.95 N

we can also write,

F = ma

where a is the acceleration of the block and m is the mass of the block,

41.95 = 48a

a = 0.874m/s².

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A contestant in a winter games event pushes a 48 kg block of ice across a frozen lake with a rope over his shoulder at a 25 degree angle.

The coefficient of static friction is 0.1 and the coefficient of kinetic friction is 0.03.

A.) Calculate the minimum force F (in N) he must exert to get the block moving.

B.) What is its acceleration (in m/s^2) once it starts to move, if that force is maintained?

We will have the following:

So:

We will find the data we can with the given information:

Also:

So:

So, the velocity at the bottom of the funnel is 0.045m/s.

Answer:

Its B

Explanation:

Answer:

She is most likely to include that he explored how poisons affected animals.

Explanation:

When data stored digitally are copied then data are copied quickly, easily, and perfectly.

Data stored digitally are quickly, easily and perfectly copied.

Data is a collection of quantities, photos or videos, signs or symbols, on which operations are performed by a computer, which can be stored and transmitted in the form of electrical signals and recorded on magnetic, optical or mechanical recording media.

Since no quality of the file is lost, copying a data is an easy, quick and a perfect process.

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Answer: The temperature decreases.

The intern energy is shown with the movement of particles, if the lower the speed then the intern energy decrease, and the temperature too.

Answer: More heat flows away from the sample

This one can be true, when they stop moving the heat (temperature) decreases and that heat energy flows away.

Both are so similar, but the most accurate is the temperature decrease because the heat flows a part away not totaly

Take into account that for any repeated measurements, the formula of percentage uncertainty is given by the following formula:

Then, for the percentage uncertainty of density. mass and volume, just use the information about half the range and average reading for each magitude (volume, density and mass)

Consider that half the range is one half the subtraction between the maximum and minimum measurement:

ANSWER:

1177600 joules

STEP-BY-STEP EXPLANATION:

Given:

m = 2300 kg

v = 32 m/s

We can calculate the kinetic energy using the following formula:

Replacing:

The kinetic energy of the truck is 1177600 joules.

During the Maurya empire, the Indian lifestyle and manner of existence had been deeply stimulated by Buddhism. Buddhism appealed to human beings of decreased castes because it emphasized individuals' course to enlightenment and salvation, which might be attained in this existence.

The Maurya Empire's political cohesion and inner peace endorsed the expansion of trade in India. at some stage in Ashoka's reign, authorities oversaw the building of essential roadways, and the Mauryan international network of exchange multiplied. India's exports to places like Bactria and Persia blanketed silk, textiles, and spices.

The Maurya Empire become centralized through the conquest of the Indo-Gangetic simple, and its capital town become located at Pataliputra (current Patna). outdoor this imperial middle, the empire's geographical volume became dependent on the loyalty of military commanders who managed the armed towns sprinkling it.

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The distance the car of mass 1090 kg travels with a velocity of 16 m / s down the hill having a 11 degree decline until it comes to a stop at the end is 52 m

θ = 11°

m = 1090 kg

g = 9.8 m / s²

μ[tex]_{k}[/tex] = 0.45

W = m g

W = 1090 * 9.8

W = 10682 N

Resolving W into its horizontal and vertical components,

[tex]W_{y}[/tex] = W cos θ

[tex]W_{y}[/tex] = 10682 * cos 11°

[tex]W_{y}[/tex] = 10682 * 0.98

[tex]W_{y}[/tex] = 10468.36 N

[tex]W_{x}[/tex] = W sin θ

[tex]W_{x}[/tex] = 10682 * sin 11°

[tex]W_{x}[/tex] = 10682 * 0.19

[tex]W_{x}[/tex] = 2029.58 N

N = [tex]W_{y}[/tex]

N = 10468.36 N

F[tex]_{k}[/tex] = μ[tex]_{k}[/tex] N

F[tex]_{k}[/tex] = 0.45 * 10468.36

F[tex]_{k}[/tex] = 4710.76 N

∑ [tex]F_{x}[/tex] = m a

[tex]W_{x}[/tex] - F[tex]_{k}[/tex] =  m a

2029.58 - 4710.76 = 1090 * a

a = - 2681.18 / 1090

a = - 2.46 m / s²

Acceleration is negative because the car is decelerating in positive direction.

v² = u² + 2 a s

0 = 16² + ( 2 * - 2.46 * s )

4.92 s = 256

s = 52 m

Therefore, the distance the car travels down the hill is 52 m

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Artificial isotopes are usually absent by nature because of their unstables nature . The Isotopes usually transit into a stable Isotopes. This Isotopes are produced artificially by bombarding an atom.

Artificially radioactive Isotopes produced from stable Isotopes are used in medicine and medical research. Therefore, the answer is True.

First, take into account that the open circle means that the point is not included into the domain and the range. The closed point means that such a point is included into both domain and range.

In this case, althoug there is a open circle, there is another part of the curve on which the y value is included into the path.

Then, the range of the graph is:

ran f = [2,7]

Which is equivalent to all number from 2 to 7.

Answer:

D. An employee receives a bonus at the end of the week for having the most sales that week.

Explanation:

Took the test

In order to calculate the resistance, we can divide the voltage and the current, according to the formula below:

Where R is the resistance (in ohm), V is the voltage (in Volt) and I is the current (in Ampere).

So, using V = 120 V and I = 60 A, we have:

Therefore the resistance is 2 ohms.

Use the Newton's Second Law of Motion to find the tension in the rope on each case.

a)

Since the gymnast climbs at a constant speed, then the net force acting on the gymnast must be 0. Since there are only two forces acting on the gymnast, namely the tension of the rope and the weight of the gymnast, then:

On the other hand, the weight of the gymnast is equal to the product of its mass times the acceleration of gravity, g=9.81m/s^2:

Then, the tension of the rope is:

b)

The forces acting on the gymnast are 2: the tension of the rope and the gravitational pull:

From the second law of motion, we know that the net force acting over an object of mass m produces an acceleration a given by:

Then:

Substitute W=588N, m=60kg and a=1.50 m/s^2 to find the tension of the rope:

Therefore, the answers are: