How does net force affect the direction of motion?

Answer:

11.3

Explanation:

Answer:

degrees

Explanation:

If a direction is somewhere between north and east, it is measured in degrees.

This measurement will be possible thanks to the existence of geographical coordinates that are some 'imaginary lines' that help us find our location on the earth's surface. These lines are called latitude and longitude, both of which are measured in degrees.

It is like a sea battle game where you have to combine the rows and columns in order to identify where the targets are located. Geographic coordinates work the same way, you must combine the rows and columns of the planisphere to identify the locations of the planet. So the lines would be the latitudes and the columns the longitudes.

Answer:

dmakqkwnwj fddfgdddwsf

The key observation enabled Edwin Hubble to prove this by observing individual Cepheid variable stars in Andromeda and applying the period-luminosity relation.

American astronomer Edwin Powell Hubble lived from November 20, 1889, through September 28, 1953. He was a significant contributor to the development of observational cosmology and extragalactic astronomy.

Hubble established that many objects formerly believed to be "nebulae" or clouds of gas and dust, were actually galaxies outside the Milky Way. He scaled galactic and extragalactic distances using the strong direct correlation between a classical Cepheid variable's luminosity and pulsation time, which was found in 1908 by Henrietta Swan Leavitt.

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The mechanic must exert a perpendicular force of 310 N on the end of the wrench to tighten the bolt correctly.

To calculate the perpendicular force that the mechanic must exert on the end of the wrench to tighten the bolt correctly, we can use the formula for torque:

\(T = F * d * sin(θ)\)

where T is the torque, F is the force applied perpendicular to the wrench, d is the length of the wrench, and θ is the angle between the force and the wrench.

We can rearrange this formula to solve for the force:

\(F = T / (d * sin(θ))\)

In this case, we know that the torque required to tighten the bolt is 62.0 Nm. To convert this to SI units, we need to multiply by the conversion factor 1 Nm = 1 J. Therefore:

T = 62.0 J

The length of the wrench is 20 cm, or 0.2 m.

The angle between the force and the wrench is 90 degrees, since the force must be applied perpendicular to the wrench.

Substituting these values into the formula, we get:

\(F = 62.0 J / (0.2 m * sin(90°))F = 310 N\)

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The correct answer is B. 50 feet.

Liquefaction is a phenomenon that occurs when water-saturated soil loses its strength and behaves like a liquid.

This can happen during an earthquake, when the shaking causes the soil particles to lose contact with each other. Liquefaction can also be caused by other factors, such as heavy rains or flooding. The depth of groundwater is an important factor in determining whether or not liquefaction will occur. If the groundwater is close to the surface, the soil is more likely to liquefy. This is because the water provides a pathway for the soil particles to move around, and it also reduces the friction between the particles. Most code documents state that liquefaction is no longer a concern once the historic high groundwater is deeper than 50 feet from the surface. This is because the soil at this depth is typically not saturated with water, and it is therefore less likely to liquefy. However, it is important to note that liquefaction can still occur at depths greater than 50 feet, especially if the soil is very loose or if there is a lot of groundwater.

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The density of the block is 1.25 \(g/cm^3\)

Given the following data:

First of all, we would determine the volume of the block.

\(Volume \;of \;block = length\) × \(width\) × \(height\)

\(Volume \;of \;block = 3\) × \(4\) × \(7\)

Volume of block = 84 \(cm^3\)

To find the density of the block;

Density is mass per unit volume of an object such as a block.

Mathematically, the density of an object is calculated by using the formula;

\(Density = \frac{Mass}{Volume}\)

Substituting the values into the formula, we have;

\(Density = \frac{105}{84}\)

Density = 1.25 \(g/cm^3\)

Therefore, the density of the block is 1.25 \(g/cm^3\)

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I suggest that your company charge a premium price than other shoes on the market based on the shoe's unique selling proposition of being 40% lighter.

Since the shoe is ideal for distance runners, it can significantly improve their performance and reduce the risk of injury. This competitive advantage is likely to appeal to serious runners who are willing to pay a premium price for quality shoes that can enhance their performance. Additionally, the cost of research and development to create such a lightweight shoe is likely to be higher, which justifies a higher price point. However, it's important to conduct market research to ensure that the premium price is reasonable and within the range of what consumers are willing to pay for such a shoe.

The shoe's 40% lighter weight provides a competitive advantage, as it can enhance a runner's performance and reduce fatigue during long-distance runs. This innovative feature is likely to attract a niche market of serious distance runners who are willing to pay a premium for a product that caters specifically to their needs. In summary, the shoe's exceptional lightness and its potential to improve the running experience justify a higher price point compared to other athletic shoes on the market.

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Answer:

  2. Colliding with the padded wall will make the force 10 times smaller

Explanation:

Impulse is the product of force and time. Its units are those of momentum. Assuming the change in momentum (impulse) remains the same, the increase in time means the force will be decreased by the same factor.

Colliding with the padded wall will make the force 10 times smaller

Answer:

This means that a doubling of the amplitude of a wave is indicative of a quadrupling of the energy transported by the wave. A tripling of the amplitude of a wave is indicative of a nine-fold increase in the amount of energy transported by the wave. So when doubling, you are quadrupling, tripling, you are 9x it, and for  halve, it cuts in half.

Explanation:

The reading on the scale is 882.6 N when the elevator accelerates upwards with an acceleration of 4.90 m/s².

Given that the mass of a person is 60.0 kg and the elevator accelerates upwards with an acceleration of 4.90 m/s², we have to determine the reading on the scale.

Let F be the force exerted by the scale on the person. Then, by Newton's second law of motion, the net force acting on the person is Fnet= m * a

where m = 60.0 kg is the mass of the person and a = 4.90 m/s² is the acceleration of the elevator. Hence, the net force acting on the person is given by;

Fnet = 60.0 kg * 4.90 m/s²

Fnet = 294.0 N

Therefore, the scale reading is equal to the force exerted by the scale on the person. Since the elevator is accelerating upwards, the force exerted by the scale on the person is greater than the weight of the person, which is the force of gravity acting on the person.

The force of gravity acting on the person is given by;

Fg = m * g, where g = 9.81 m/s² is the acceleration due to gravity. Hence, the force of gravity acting on the person is given by;

Fg = 60.0 kg * 9.81 m/s²Fg = 588.6 N

Therefore, the scale reading is given by the sum of the force of gravity acting on the person and the net force acting on the person;

F = Fg + Fnet

F = 588.6 N + 294.0 N

F = 882.6 N

Thus, the reading on the scale is 882.6 N when the elevator accelerates upwards with an acceleration of 4.90 m/s².

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Answer:

\(8.5\frac{m}{s}\)

Explanation:

Use Kinematics:

\(v = v_0 + at\)

\(v = 3 + 1.1 * 5\)

\(v = 8.5 \frac{m}{s}\)

Answer:

D

Explanation:

Answer:

D.

It reduces the rate at which electrons flow.

Answer:

v = 26.54 m/s

Explanation:

Given that,

The mass of a hockey puck, m = 0.21 kg

The kinetic energy of the hockey puck, E= 74 J

We need to find the speed of the hockey puck. Let the speed is v. We know that, the kinetic energy is given by :

\(E=\dfrac{1}{2}mv^2\)

Where

v is the speed

So,

\(v=\sqrt{\dfrac{2E}{m}} \\\\v=\sqrt{\dfrac{2\times 74}{0.21}} \\\\v=26.54\ m/s\)

So, the speed of the hockey puck is 26.54 m/s.

Since the powerful gravitational pull of the Sun, all of the the solar system's planets revolve around it. The Sun basically attracts the solar system's planets, encompassing Earth, as well as allows them to be in orbit.

Kepler's laws of planetary motion was initially published at 1609 and 1619 by Johannes Kepler which implies the description of the main orbits of planets around the Sun.

They explain the following scenarios:

Thus, this way, the orbits of the planets around the sun work.

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The wavelength for note A in this concert hall is (b) 0.78 m.

The speed of sound (v) in a medium is related to its frequency (f) and wavelength (λ) by the formula:

v = fλ

We can rearrange this formula to solve for the wavelength:

λ = v / f

In this case, the frequency of note A is 440 Hz, and the speed of sound in the concert hall is 344 m/s. Substituting these values into the formula above, we get:

λ = 344 m/s / 440 Hz

λ = 0.78 m

Therefore, the wavelength for note A in this concert hall is (b) 0.78 m.

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The broken pieces of the plates overlie a ductile layer known as asthenosphere.

Plate tectonics is a scientific hypothesis that explains the movement of Earth's lithosphere. Plate tectonics also explains the formation of mountains, volcanoes, and the occurrence of earthquakes. The Earth's lithosphere is composed of the Earth's crust, both continental and oceanic, and the uppermost part of the mantle. The lithosphere is divided into several plates that fit together like a puzzle. These plates are in constant motion, driven by the motion of molten rock in the Earth's mantle.

The plate boundaries can interact with one another in various ways. Divergent plate boundaries are where new lithosphere is created as the plates move apart. At convergent plate boundaries, one plate is forced beneath another. Transform plate boundaries are where plates slide past each other in a sideways movement.

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This question deals with the physics of resonance and sound. The possible frequency of the pano key is 258hz.

The beat of a frequency is the difference (an absolute value) in the frequencies produced by the two waves.

Beat per second equals |f1 - f2| Where

ft = Frequency of the Tunning fork and

fp= Frequency of the Piano Key

Hence

3 =  261 - fp

Solving for fp,

fp = 261-3

= 258hz

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During inspiration, the thoracic cavity undergoes specific changes to facilitate the intake of air into the lungs. These changes involve the expansion of the thoracic cavity, which increases the volume of the lungs, leading to a decrease in pressure and the subsequent inflow of air.

The thoracic cavity is the space within the chest that houses vital organs such as the heart and lungs. During inspiration, the thoracic cavity undergoes several changes to enable the inhalation of air. The diaphragm, a dome-shaped muscle located at the base of the thoracic cavity, contracts and moves downward. This contraction causes the thoracic cavity to expand vertically, increasing the volume of the lungs. Additionally, the external intercostal muscles, which are situated between the ribs, contract, lifting the ribcage upward and outward. This action further expands the thoracic cavity laterally, increasing the lung volume. As a result of the expansion in lung volume, the intrapulmonary pressure decreases, creating a pressure gradient between the atmosphere and the lungs. Air flows from an area of higher pressure (the atmosphere) to an area of lower pressure (the lungs), and inhalation occurs. These changes in the thoracic cavity during inspiration are crucial for the process of breathing and the exchange of oxygen and carbon dioxide in the body.

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Astronomers believe that supermassive black holes are the source of an Active Galactic Nucleus (AGN)'s energy based on several lines of evidence.

Firstly, AGNs are incredibly luminous, emitting enormous amounts of energy across multiple wavelengths, from radio waves to gamma rays. The only known astrophysical object capable of producing such high levels of energy is a supermassive black hole. As matter falls into the black hole's accretion disk, it releases vast amounts of energy through various processes, such as friction and gravitational potential energy conversion.

Secondly, AGNs often exhibit jets of particles and radiation extending from their centers. These jets are thought to originate from the vicinity of the supermassive black hole, where powerful magnetic fields accelerate particles to relativistic speeds. The energy required to generate these jets is believed to come from the gravitational potential energy released during the accretion process around the black hole.

Furthermore, observations have shown a close relationship between the mass of the central black hole and the properties of the host galaxy, indicating a co-evolutionary process. This suggests that the supermassive black hole plays a fundamental role in regulating the growth and evolution of galaxies.

In summary, the extraordinary energy output, the presence of powerful jets, and the connection between the black hole mass and galaxy properties strongly support the idea that supermassive black holes are the primary source of energy in AGNs.

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Answer:  21 kgm/s

Explanation:

momentum

p=mv  (mass*velocity )

m= 6kg

v=3.5 m/s

6*3.5= 21 kgm/s

Answer: c

Explanation:

a 2kg brick at 20°

Answer:

moon

Explanation:

I dont KNow

The magnitude of force exerted on the woman by the floor when the lift is accelerating is 150 Newton.

Given the following data:

To calculate the force exerted on the woman by the floor when the lift is accelerating, we would apply Newton's Second Law of Motion:

Mathematically, Newton's Second Law of Motion is given by this formula;

\(Force = mass \times acceleration\)

Substituting the given parameters into the formula, we have;

\(Force = 60 \times 2.5\)

Force = 150 Newton.

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Answer:

2.00v

Explanation:

The given problem can be exemplified in the following diagram:

The weight of the bar is concentrated in its center of mass which is located in the middle of the longitude of the bar. We can add the total torques at the point where the pivot touches the bar and we get:

Here we have used momentum counter-clockwise as positive. Since the system is in equilibrium the sum of the torques must be equal to zero:

Now we solve the operations, we will use for the acceleration of gravity 9.8 meters per second squared:

Now we solve for the mass "M" first by subtracting 88.2Nm from both sides:

Now we divide both sides by -1.96:

Solving the operations we get:

Therefore, the mass of the bar is 45 kg.

(a) The maximum constant speed of the car on a straight horizontal road is 48 m/s.

(b) The maximum possible acceleration of the car when it is traveling at a speed of 40 m/s along a straight horizontal road is 3.6 m/s^2.

(c) The maximum possible speed of the car as it ascends a hill on a straight road inclined at an angle of 3 degrees to the horizontal is 16.4 m/s.

(a) To determine the maximum constant speed of the car on a straight horizontal road, we need to balance the driving force provided by the engine and the resistance force acting against the car. The resistance force is given as 30v, where v represents the car's speed. The driving force is equal to the product of the car's mass (1200 kg) and its acceleration.

At maximum constant speed, the acceleration is zero. Therefore, the driving force is zero as well. Equating the driving force and resistance force, we have 30v = 0. Solving for v, we find v = 0. Thus, the maximum constant speed of the car is 48 m/s.

(b) To find the maximum possible acceleration of the car when it is traveling at a speed of 40 m/s on a straight horizontal road, we use the same equation as in part (a): 30v = m * a, where v is the car's speed, m is its mass (1200 kg), and a is the acceleration.

Substituting the given values, we have 30 * 40 = 1200 * a. Solving for a, we find a = 3.6 m/s^2. Therefore, the maximum possible acceleration of the car is 3.6 m/s^2.

(c) When the car ascends a hill inclined at an angle of 3 degrees to the horizontal, we need to consider the gravitational force acting against the car. The component of the car's weight parallel to the incline is given by mg * sinθ, where m is the mass (1200 kg), g is the acceleration due to gravity (9.81 m/s^2), and θ is the angle of inclination (3 degrees).

To maintain motion up the hill, the driving force provided by the engine must be greater than or equal to the sum of the resistance force and the component of the car's weight. Using the maximum power output of the engine (69120 watts), we can calculate the maximum possible speed of the car as it ascends the hill. Further calculations yield a maximum possible speed of 16.4 m/s.

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The electric potential at point b experienced by the charge cab be determined using the formulas given.

The electric potential of a point charge is the work done in moving the charge from infinity to certain point against the electric field.

V = Ed

V = (F/q)d

V = (Fd)/q

where;

Thus, the electric potential at point b experienced by the charge cab be determined using the formulas given.

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Answer:

308,000 or 30.8×10^3

Explanation:

v=f×lamda

v is ?, f is 875Hz, lamda is 352m

v=875×352

v=308,000

v=30.8×10^3 m/s