how large a net force is required to accelerate a 1200-kg suv from rest to a speed of 25 m/s in a distance of 200 m?

The plane below is inclined at 25° and the weight of the box is 25 N, so the magnitude of vector A is 10.56 N.

In physics, magnitude refers to the size or numerical value of a physical quantity or vector, without considering its direction. It represents the "amount" or "extent" of a quantity or the "length" of a vector.

For example, the magnitude of a force represents the strength or intensity of the force, regardless of its direction.

Similarly, the magnitude of a velocity vector represents the speed or rate of motion, without considering the direction of motion.

Here, it is given that,

θ = 25°

W = 25 N

So,

A = W sinθ

A = 25 sin(25°)

A = 10.56 N

Thus, the magnitude is 10.56 N.

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Answer:

Re-flux

Explanation:

The force exerted by the biceps and the elbow is 239.9 N and 215.89 N respectively.

When we use only your forearms to lift an object, assume that your biceps are the main muscle that lifts your arm. Suppose the weight of the forearm he is 1.50 kg. If the biceps is attached to the forearm 2.50cm from the elbow, with the forearm parallel to the floor, flex the biceps to hold a 950g ball on the end of the elbow at a distance of 36.0cm from the elbow.

Against this background,

forearm mass = 1.50 kg

forearm length = 2.50 cm

The weight of the ball is 950 g.

36.0 cm ball spacing

Forearm strength needs to be calculated. Balance Elbow Using

Torque,

Fb x Db = Wf x Df/2 + Wball x Dball

Putting Value,

Fb x .025 = 1.5 x 9.8 x .36/2 + 0

95 x 9.8 x 0.36

Fb = 239.9 N

Now elbow force,

Fb = Fl + Wf + Wb

Fl = Fb - Wf - Wb

Putting value,

Fl = 239 .9 - (1.5 x 9.8 ) - (0.95×9.8)

Fl = 215.89 N.

Therefore the force on the elbow is 215.89 N.

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If the total momentum of the insects is zero, this means all of the insects are at rest or are moving in opposite of each other. Same if the total kinetic energy is zero.

Momentum is the quantity of motion which is multiplied by the amount of matter moved i.e., mass and the velocity at which it moves. Because, the object is in motion, it is a vector quantity, it has both direction and magnitude. It is determined by the product of the object's mass and the velocity of object.

If the total momentum of the insects is zero, this could mean anything of the two things. Either, all of the insects are at rest or an equal amount of insects are moving in opposite direction of each other which cancels out the total momentum of the insects.

If the total kinetic energy of the insects is zero, this means either all of the insects are at rest or an equal amount of insects are moving in opposite direction of one another which results into canceling out the energy.

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Answer:A compound is a substance formed when two or more elements are chemically joined.

Explation:Water, salt, and sugar are examples of compounds.

I hope this helps<3

Answer:

Velocity

Explanation:

Objects in motion usually have a speed which is scalar or velocity which is a vector.

A scalar quantity is one with magnitude but has no directional attribute.

A vector quantity is one with both magnitude and directional attribute.

Speed is a scalar quantity that describes the magnitude of motion a body accrues.

Velocity is a vector quantity that describes both the magnitude of motion and the direction of motion in a body.

Answer:

probaby not

Explanation:

you might get thrown in jail tho

The total distance traveled by the student can be either larger or smaller or equal to the magnitude of the displacement from their starting position to their ending position. The correct answer is option A.

The total distance traveled by a student represents the sum of all distances covered during their journey, regardless of direction. It includes any changes in direction and backtracking

On the other hand, the magnitude of the displacement refers to the shortest distance between the starting and ending positions, considering only the straight-line distance and direction.

In some cases, the total distance traveled can be larger than the magnitude of the displacement. This occurs when the student takes a path involving detours, changes in direction, or backtracking. The total distance accounts for all these individual distances, resulting in a larger value.

Conversely, the total distance traveled can also be smaller than the magnitude of the displacement. This happens when the student takes a direct path from the starting position to the ending position without any detours or changes in direction. In such cases, the magnitude of the displacement will be greater than the total distance traveled.

Therefore, there is no fixed relationship between the total distance traveled and the magnitude of the displacement. They are independent quantities that can vary depending on the specific path taken by the student. Hence option A is correct.

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The wavelength (in feet) of the sound wave with a velocity of 1125 ft/s and a frequency of 600 Hz is 1.88 ft

The velocity of a wave is related to its frequency and wavelength according to the following equation:

Velocity (v) = wavelength (λ) × frequency (f)

v = λf

From the question given, the following data were obtained:

The wavelength of the wave can be obtained as follow:

v = λf

Divide both sides by f

λ = v / f

λ = 1125 / 600

λ = 1.88 ft

Thus, the wavelegth of the wave is 1.88 ft

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Answer:

If a ball dropped from a tower reaches the ground after 3.5 seconds, the height of the tower is 60.025 m.

Explanation:

How to calculate the height of the tower?

       s = ut + 1/2 at²

       where s = displacement,

       u = initial velocity

       t = time traveled

       a = acceleration

Solution :

It is given that :

Putting the values in the equation,

s = ut + + 1/2 at²

  = 0 + 1/2 x (-9.8) x 3.5² m

  = - 60.025 m.  

The negative sign signifies that the displacement has occurred in the downward direction, along the direction of g.

Thus the height of the tower is 60.025 m.

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The period of revolution in a binary-star system depends on the masses of the stars and the distance between them. In this case, we know that each star has a mass that is 2.4 times that of the Sun, and they are separated by a distance that is 4.2 times the distance between Earth and the Sun.

To calculate their period of revolution, we can use Kepler's third law, which states that the square of the period of revolution is proportional to the cube of the average distance between the stars, Therefore, the period of revolution for the two stars in this binary-star system is approximately 32.1 years, To find the period of revolution of a binary-star system, we can use Kepler's Third Law, which relates the period of revolution (T) to the semi-major axis (a) and the total mass of the system (M). The formula for Kepler's Third Law is:

T^2 = (4π^2 * a^3) / (G * M)

where:
- T is the period of revolution
- a is the semi-major axis (distance between the stars)
- G is the gravitational constant (6.67430 x 10^-11 m^3 kg^-1 s^-2)
- M is the total mass of the system

In this case, the mass of each star is 2.4 times the mass of the Sun (M_sun = 1.989 x 10^30 kg). Therefore, the total mass (M) is:

M = 2 * (2.4 * M_sun) = 4.8 * M_sun

The distance between the stars is 4.2 times the distance between Earth and the Sun (1 astronomical unit, AU = 1.496 x 10^11 m). Therefore, the semi-major axis (a) is:

a = 4.2 AU

Now, we can plug these values into Kepler's Third Law formula to find the period of revolution:

T^2 = (4π^2 * (4.2 AU)^3) / (G * 4.8 * M_sun)

First, convert AU to meters:

a (in meters) = 4.2 * 1.496 x 10^11 m ≈ 6.2832 x 10^11 m

Now, substitute the values:

T^2 = (4π^2 * (6.2832 x 10^11 m)^3) / (6.67430 x 10^-11 m^3 kg^-1 s^-2 * 4.8 * 1.989 x 10^30 kg)

After solving for T^2, we can find the period T by taking the square root of the result:

T = √(T^2) ≈ 22.64 years

So, the period of revolution for this binary-star system is approximately 22.64 years.

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Answer:

55.56%

Explanation:

We'll begin by calculating the work done in pushing the wedge. This can be obtained as follow:

Force (F) = 900 N

Distance (s) = 0.1 m

Workdone (Wd) =..?

Wd = F × s

Wd = 900 × 0.1

Wd = 90 J

Finally, we shall determine the efficiency. This can be obtained as follow:

Work output = 50 J

Work input = 90 J

Efficiency =?

Efficiency = work output / work input

Efficiency = 50 / 90 × 100

Efficiency = 55.56%

Thus, the efficiency is 55.56%

Answer:

i don`t get it

Explanation:

The magnitude of this vector is 9.43 and the direction angle of the vector is 58°.

The initial point and the terminal point of the vectors are (3 - 5) and (-2, 3) respectively.

The characteristics of the vector mainly includes the magnitude and the direction of the angle of the vector.

The magnitude of this vector will be given by,

M = √((-2-3)²+(3+5)²)

M = √(25+64)

M = √89

M = 9.43

The direction angle of this vector with the x-axis will be given by,

Tan A = (8/-5)

Tan A = -1.6

A = 58°.

The direction angle of this vector is 58 degree.

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Answer: D. The magnitude is StartRoot 89 EndRoot, and the direction angle is about 122°.

Explanation:

Answer:

From our perspective on Earth, two types of eclipses occur: lunar, the blocking of the Moon by Earth's shadow, and solar, the obstruction of the Sun by the Moon. When the Moon passes between Sun and Earth, the lunar shadow is seen as a solar eclipse on Earth.

Hopes this helps

Answer:

c

Explanation:

       when earth casts it shadow on moon then moon is not visible from earth.

and lunar eclipse occurs when earth casts its shadow on moon

Answer:

Length -> meter

Mass -> kilogram

Time -> second

g for gram

mg for milligram

t for time

μm for micrometer

ms for millisecond

300cm = 3m

500g = 0.5kg

1500m = 1.5km

250ms = 0.25s

3.65×10^4g = 36.5kg

Based on the figure, the paddle will move in the direction in which force is applied

Generally, Force is a push or pull which acts on an object to cause it to move, change direction, or accelerate.

It is a vector quantity and is measured in the SI unit of newtons (N).

Given the figure and the above definition of force, we can conclude that when force is exerted on the paddle, it will be propelled or propelled in the same direction as the force.

Since the heat will cause the force to come from the right it will push the paddle clockwise

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The sartorius muscle is the solution. A superficial muscle that runs the full length of the leg, the sartorius is involved in the flexion of the knee and hip.

The heart's wall is made up of cardiac muscle, which also causes the heart to contract vigorously. Intestinal, uterine, blood vessel, and internal ocular muscles are all made of smooth muscles.

The epidermis and some skeletal muscles are linked to the bones (muscles in our face). The skeletal muscles' contraction aids in the movement of the limbs and other bodily parts.

Although some estimates go as high as 840, the majority of sources claim that there are over 650 identified skeletal muscles in the human body.

Therefore, The sartorius muscle is the solution. A superficial muscle that runs the full length of the leg, the sartorius is involved in the flexion of the knee and hip.

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To determine the coefficients a1 and b1, you can use the Chebyshev filter design method. For a 2 kHz corner frequency and a 2 dB passband ripple, the equations are:
a1 = sin((2n-1) * pi / 2N)
b1 = sinh( (1/N) * asinh(1/R) )

In these equations, N is the filter order, n is the coefficient number, and R is the passband ripple in dB. For this particular question, you need to determine the filter order (N) as well to find the values of a1 and b1. The Chebyshev filter method allows you to determine the coefficients for the transfer function that meets your desired specifications.

Summary: To find the coefficients a1 and b1 for a 2 kHz corner frequency and a 2 dB passband ripple, you will need to determine the filter order (N) and use the Chebyshev filter design method. Once the filter order is determined, apply the given equations to find the coefficients a1 and b1.

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The stopping voltage of the photocell is 2.5 V.

What is the voltage required to stop the photocell?

When red light with a frequency of 6 x 10^14 Hz illuminates a photocell, the electrons in the metal plate are excited and can be emitted if their energy is greater than the work function of the metal. The work function is the minimum energy required to remove an electron from the metal. In this case, the work function (W) is given as 2 eV.

To calculate the stopping voltage, we can use the equation:

Stopping voltage = Energy of incident photons - Work function

The energy of a photon is given by the equation:

Energy = Planck's constant (h) × Frequency (f)

Plugging in the values, we have:

Energy of incident photons = (6.626 x 10^-34 J s) × (6 x 10^14 Hz) = 3.9756 x 10^-19 J

Converting this energy to electron volts (eV), we divide by the elementary charge (1.602 x 10^-19 C/eV):

Energy of incident photons = (3.9756 x 10^-19 J) / (1.602 x 10^-19 C/eV) ≈ 2.478 eV

Now we can calculate the stopping voltage:

Stopping voltage = 2.478 eV - 2 eV = 0.478 eV ≈ 0.5 V

Therefore, the stopping voltage of the photocell is approximately 0.5 V.

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The correct answer is physical fitness

The ability to maintain a healthy quality of life that allows us to get the most out of our everyday activities without undue weariness or physical stress is referred to as physical wellness. It entails taking care of our bodies and acknowledging that our everyday routines and behaviours have a substantial impact on our general health, well-being, and quality of life.

This section contains further information about:

keeping that body moving - benefits of regular mobility in your work or study periods

finding your 30 - recommendations for regular exercise while isolated eating well getting a good night's sleep maintaining routine health check-ups

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Answer:

Many of these gases occur naturally, but human activity is increasing the concentrations of some of them in the atmosphere, in particular:

carbon dioxide (CO2)

methane.

nitrous oxide.

fluorinated gases.

Explanation:

Answer: Obviously carbon dioxide, nitrogen argon, neon, helium, krypton.... etc etc....

Explanation: Have a great day!!!

2NCl3--- N2 + 3Cl2

hope it helps

Answer:

its D

Explanation:

It is time when the moon completely covers the sun. So, the diagram that shows the earth moon and sun system arranged to cause a full solar eclipse is in option D.

A solar eclipse happens when the Moon moves in front of the Sun, blocking the Sun's light entirely or partially from a tiny portion of the Earth.

During the new moon phase of the eclipse season, when the Moon's circular plane is close to the Earth's orbital plane, such an alignment takes place around every six months.  

A total eclipse occurs when the Moon completely blocks out the Sun's disk. Only a portion of the Moon is covered by annular and partial eclipses.

In contrast to a total eclipse, which can be seen from any place on Earth's night side, a partial eclipse is only viewable from a fairly tiny portion of the globe.

Therefore, it concludes that option D in the figure shows the cause of the total solar eclipse.

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One consequence of Newton's third law of motion is that all actions have equal and opposite reactions. (C)

In fact, that's pretty much what the law itself says in so many words.

Answer:

Its C All actions have equal and opposite reactions

Explanation:

Ive done this before

75km=75000m

35min=2100 seconds

Velocity=Displacement/Time

=75000/2100

=750/21

=35.71 m/s

The first one is based on the fundamental definition of velocity that employs the widely used velocity equation.

The second approach determines the amount of velocity change brought on by acceleration over a given period of time.

Finally, the average velocity formula is used in the third section of the velocity calculator, which may be helpful if you need to examine trips with varying speeds across different distances.

According to the definition of velocity, it is the rate at which an object's position changes over time. Consideration of body motion is one of the fundamental ideas in classical mechanics.

Therefore, The first one is based on the fundamental definition of velocity that employs the widely used velocity equation.

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