Vector A is 3.2 m in length and points along the positive y-axis. Vector B is 4.6 m in length and points
along a direction 195° counterclockwise from the positive x-axis. What is the magnitude of the resultant
when vectors A and B are added?

Answer:

Hello!

I could help you on this ^^

Explanation:

Newton’s Third Law of Motion states, “When one object exerts a force on a second object, the second one exerts a force on the first that is equal in magnitude and opposite in direction.”

-This law is sometimes called the “Law of Action and Reaction”.

-Even though the forces are equal in magnitude (strength) and opposite in direction, they do not cancel each other.

This law addresses two objects, each with only one force exerted on it.

-Each object is exerting one force on the other object.

-Each object is experiencing only one force.

The action and reaction forces are reciprocal (opposite) on an object.

Examples may include:

A swimmer swimming forward:

The swimmer pushes against the water (action force), the water pushes back on the swimmer (reaction force) and pushes her forward.

A ball is thrown against a wall:  

The ball puts a force on the wall (action force), and the wall puts a force on the ball (reaction force) so the ball bounces off.

A person is diving off a raft:

The person puts a force on the raft (action force) pushing it, and the raft puts a force on the diver (reaction force) pushing them in the opposite direction.

A person pushes against a wall (action force), and the wall exerts an equal and opposite force against the person (reaction force).

(Not my words)

"The Space Shuttle engines push out hot gases (action force), and the hot gases put a force on the shuttle engines (reaction force) so the shuttle lifts (there is no sling shot doing it)"

Explanation:

Wave speed  =  (frequency)  x  (wavelength)

                      =  (266 /sec)  x  (1.3 meters)

The resistance in the original circuit is 72.0 Ω.

We can make use of series circuits and Ohm's Law. The sum of the individual resistances in a series circuit determines the total resistance.

Assume that R is the resistance of the circuit's initial configuration (before the inclusion of the additional resistor).

According to Ohm's Law, the following equation can be used to determine the current (I) in a circuit:

I = V / R

where I is the current, V is the voltage, and R is the resistance.

Given that the current in the original circuit is 24.0 A, we can write the equation as:

24.0 = V / R

Similarly, after adding the 24.0-Ω resistor in series, the current drops to 18.0 A. The equation for this scenario is:

18.0 = V / (R + 24.0)

We can set up a system of equations using these two equations and solve for R.

Equation 1: 24.0 = V / R

Equation 2: 18.0 = V / (R + 24.0)

To eliminate V, we can rearrange Equation 1 to express V in terms of R:

V = 24.0R

Substituting this into Equation 2:

18.0 = (24.0R) / (R + 24.0)

To solve for R, we can cross-multiply and simplify:

18.0(R + 24.0) = 24.0R

18.0R + 432.0 = 24.0R

432.0 = 24.0R - 18.0R

432.0 = 6.0R

R = 432.0 / 6.0

R = 72.0

So, the resistance in the original circuit is 72.0 Ω.

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Answer:

B. A well-tested explanation for a widely accepted hypothesis

Explanation:

This is true about a scientific theory going by the fact of it being a well tested explanation. For example, in one of the Newtons law of motion which he stated to be "To every action, there is equal and opposite reaction", the hypothesis has been known till he was able to offer a well tested explanations with calculations showing that, it was actually true.

Answer:

I don't know I'm sorry I will tell you another answer asks me

Answer: choices a and b

Explanation:

Telescope can be defined as am optical instrument which is designed to observe the distant objects clear and nearer. It comprises of arrangement of lenses which allow the rays of light to be collected. The collected light is focused and the image so produced is magnified in the form of an image. The telescopes are prepared and manufactured on mountains top as this will help in preventing the distortion of light obtain from the star due to the fluctuation of air mass in the atmosphere. The atmospheric distortion affects the resolution, and affects the vision. The atmospheric pressure is low at the mountain tops so it will help in better observation of the sky.

Work needed = 23,520 J

Given

height = 12 m

mass = 200 kg

Required

work needed by the crane

Solution

Work is the transfer of energy caused by the force acting on a moving object  

Work is the product of force with the displacement of objects.  

Can be formulated  

W = F x d  

W = Work, J, Nm  

F = Force, N  

d = distance, m  

F = m x g

Input the value :

W = mgd

W = 200 kg x 9.8 m/s²x12 m

W = 23520 J

Explanation:

The frequency of a wave is inversely proportional to its wavelength. That means that waves with a high frequency have a short wavelength, while waves with the low frequency have a longer wavelength.

Wave A has a higher frequency, wave B must have a higher wavelength to maintain the inverse relationship. Therefore option Option B is correct.

According to the relationship between frequency and wavelength in electromagnetic waves, they are inversely proportional.

Therefore, if light wave A has a greater frequency than light wave B, light wave B will have a greater wavelength. This can be explained by the equation c = λν, where c represents the speed of light, λ represents wavelength, and ν represents frequency.

As frequency increases, wavelength decreases, and vice versa. Since wave A has a higher frequency, wave B must have a higher wavelength to maintain the inverse relationship. Therefore, the correct answer is B) Wave B.

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Your question is incomplete, but most probably your full question was,

Lightwave A has a greater frequency than light wave B. Which has a greater wavelength?

A) Wave A

B) Wave B

C) They're equal

D) Not enough info

You're standing on top of a building and throw a hammer straight down with an initial velocity of -11 m/s. it takes 4 seconds for the hammer to hit the ground. Must be standing 122.4 high off the ground you threw the hammer  

given

initial velocity = -11 m/s

time = 4 seconds

final velocity = 0

acceleration due to gravity = 9.8 \(m/s^{2}\)

Using kinematics equation

s = u*t + 1/2 * g * \(t^{2}\)

s = - u*t + 1/2 * (-g) * \(t^{2}\)

s = -11 * 4 - 1/2 * 9.8 * 16

s = - 122.4 m

Must be standing 122.4 high off the ground you threw the hammer  

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Answer:This is also known as the law of inertia.     EXPLANATION:  Inertia is the tendency of an object to remain at rest or remain in motion.

Answer:  the magnitude of the magnetic field perpendicular to the wire is approximately 1.93 x 10^-3 T.

Explanation:

The magnetic force on a straight wire carrying current is given by the formula:

F = B * I * L * sin(theta),

where F is the magnetic force, B is the magnetic field, I is the current, L is the length of the wire, and theta is the angle between the magnetic field and the wire (which is 90 degrees in this case since the field is perpendicular to the wire).

Given:

Length of the wire (L) = 0.30 m

Current (I) = 15.0 A

Magnetic force (F) = 2.6 x 10^-3 N

Theta (angle) = 90 degrees

We can rearrange the formula to solve for the magnetic field (B):

B = F / (I * L * sin(theta))

Plugging in the given values:

B = (2.6 x 10^-3 N) / (15.0 A * 0.30 m * sin(90 degrees))

Since sin(90 degrees) equals 1:

B = (2.6 x 10^-3 N) / (15.0 A * 0.30 m * 1)

B = 2.6 x 10^-3 N / (4.5 A * 0.30 m)

B = 2.6 x 10^-3 N / 1.35 A*m

B ≈ 1.93 x 10^-3 T (Tesla)

Answer:

y=-1x+19

Explanation:

this is because the m1.m2=-1

The disk will come to a stop after about 5.5 seconds.

The disk's initial kinetic energy is a combination of rotational and translational energy. As it begins to move up the slope, it experiences an opposing force of friction that acts in the opposite direction of the motion. This force causes the disk to decelerate and ultimately come to a stop.

The amount of frictional force acting on the disk depends on the normal force, which is equal to the gravitational force acting on the disk. By using conservation of energy principles, we can calculate the work done by friction to bring the disk to a stop.

This work is equal to the change in kinetic energy of the disk. Using the work-energy theorem, we can then find the time it takes for the disk to stop. In this case, the disk will come to a stop after about 5.5 seconds.

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Answer:

The retina comprises of rod and cone cells . The rod cells are responsible for black and white vision and require low light levels while the cone cells are responsible for color vision and require good/high light levels for better functioning.

When faint stars are looked at on the edges of the vision it allows more light from faint objects to strike the rod cells which then becomes more visible.

Answer:

18 m

Explanation:

Velocity = distance / time

v = d/t

d = vt

d = (6 m/s) (3  s)

d = 18 m

Hope that helps

The smooth, flat surface with tightly packed stones and desert varnish, as shown in the photo with a lens cap for scale, is called a desert pavement.

A desert pavement is a naturally occurring surface layer in arid or semi-arid regions that is composed of rocks, gravel, and boulders that have been tightly packed by wind and water action. The finer particles have been blown or washed away, leaving behind the larger, heavier stones.

The desert pavement surface, while appearing barren, is home to a variety of microorganisms that live within the interstices between the rocks. The pavement's surface layer provides a stable environment that allows for the growth of these microbes, which in turn may provide food and shelter for other desert-dwelling organisms.

The term "desert varnish" refers to a thin coating of manganese and iron oxide that appears on the surface of rocks and boulders in arid regions. This varnish can also contribute to the stability of the desert pavement surface, acting as a glue to hold the rocks and gravel together.

Due to its stability, desert pavement surfaces are often used as travel routes for vehicles and animals in arid regions. The formation of desert pavements can take many years, as it requires the right combination of wind, water, and time to pack the rocks and stones together tightly enough to form a stable surface.

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To find the resultant force we will first find the component force of the forces given, to do this, we need to remember that any vector can be express in component form by:

For force u we notice that its magnitude is 280 N and its angle is zero, then we have:

For force v we know that its magnitude is 135 N and its angle is 45°, then we have:

Now that we have both vectors in component form we add them to get the resultant in component form:

Once we have the resultant force in component form we can find its magnitude and direction if we remember that they are given by:

Plugging the values we found for the components we have:

and

Therefore, the magnitude of the resultant force is 387.41 N and the direction is 14.27°

Answer:

a joule is the unit of work

Explanation:

The mass of air passing the blades per second is 2.76 × \(10^{4}\) kg

A kind of solar energy is wind energy. The technique through which wind is utilized to generate power is known as wind energy. The kinetic energy in the wind is converted to mechanical power by wind turbines.

A renewable energy source that harnesses the power of the wind is wind energy. The wind energy formula is given by,

P = 1/2 ρAV³,   where P = Power

Given that,

density of air (ρ) = 1.2kg/m³

volume (v) = 2.3×\(10^{4}\) m³

Now calculate mass of the air -

mass = density × volume

         = 1.2 × (2.3 × \(10^{4}\))

         = 2.76 × \(10^{4}\) kg

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a. cool air warms as it mixes with denser air

Explanation:

c. warm air is displaced by cooler denser air

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All of the options are correct for the advantages of multibeam sounder compared to traditional echo sounding.

Multibeam sounders are advanced sonar systems used for mapping the seafloor that offer several advantages over traditional echo sounders. These advantages include:

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Answer:

Explanation:

Energy in a Pendulum

In a simple pendulum with no friction, mechanical energy is conserved.  Total mechanical energy is a combination of kinetic energy and gravitational potential energy.   As the pendulum swings back and forth, there is a constant exchange between kinetic energy and gravitational potential energy.

Potential Energy

The potential energy of the pendulum can be modeled off of the basic equation

PE = mgh

where g is the acceleration due to gravity and h is the height.  We often use this equation to model objects in free fall.

However, the pendulum is constrained by the rod or string and is not in free fall.  Thus we must express the height in terms of θ, the angle and L, the length of the pendulum.   Thus h = L(1 – COS θ)

Explanation:

\(net \: force \: = gravitation \: force - resistance \\ 10000 = F - 9000 \\ F = 19000\)

The equation given, x^2/63,500 + y^2/50,900 = 1, represents an ellipse. An ellipse is a closed curve that resembles a flattened circle. In this case, it represents the shape of the moon's orbit around the Earth.

To understand the shape of the orbit, let's analyze the equation step by step. The equation is in the form (x^2/a^2) + (y^2/b^2) = 1, where a and b are positive constants.

The values of a and b determine the shape and size of the ellipse. In this equation, a is equal to √63,500 and b is equal to √50,900.

Comparing these values, we can see that a is greater than b. This means that the major axis of the ellipse is aligned with the x-axis, and the minor axis is aligned with the y-axis.

So, the shape of the moon's orbit is elongated horizontally, resembling a stretched circle. The wider part of the ellipse represents the maximum distance of the moon from the Earth (apogee), while the narrower part represents the minimum distance (perigee).

In summary, the equation x^2/63,500 + y^2/50,900 = 1 represents an elliptical shape for the moon's orbit around the Earth.

(Note: The terms "x263,500" and "y250,900" in the original question seem to be typos. The correct equation is x^2/63,500 + y^2/50,900 = 1.)

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Answer:

24kgm/s

Explanation:

Given parameters:

Force  = 80N

Mass of object  = 6kg

Initial velocity  = 4m/s

Final velocity = 8m/s

Solution:

Impulse  = ?

Solution:

The impulse on a body is its change in momentum.

    Impulse  = m (v  - u )

m is the mass

v is the final velocity

u is the initial velocity

  Now insert the parameters and solve;

          Impulse  = 6 (8 - 4) = 24kgm/s

Only the puck's mechanical energy (kinetic plus potential) is kept in tact.

The energy an object has when moving or the energy it retains owing to its location is referred to as mechanical energy, also known as kinetic energy or potential energy. Mechanical energy is another source of renewable energy. Many renewable energy sources rely on mechanical energy to efficiently create electricity or convert energy.

Mechanical energy is created by combining kinetic and potential energy. It is the force that controls the position and movement of an object. A compressed spring, for instance, has mechanical energy in the form of potential energy, while a moving vehicle has mechanical energy in the form of kinetic energy.

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Answer:

Fleming's Left Hand Rule states that if we arrange our thumb, forefinger and middle finger of the left hand perpendicular to each other, then the thumb points towards the direction of the magnetic force, the forefinger points towards the direction of the magnetic field and the middle finger points towards the direction ...

Explanation:

Fleming's right-hand rule gives which direction the current flows. The right hand is held with the thumb, index finger and middle finger mutually perpendicular to each other (at right angles), as shown in the diagram. The thumb is pointed in the direction of the motion of the conductor relative to the magnetic field.