You attach each end of a copper wire to a 9-volt battery,
creating a simple circuit. The wire is 29.077 centimeters long.
What is the magnitude of the drift velocity of electrons along this
wire, in u

Given :

The diagram below shows a force of 5N acting on an object P at an angle of 30° to the horizontal.

To Find :

By drawing appropriate lines on the diagram using a ruler to determine:

a.)The horizontal component of the 5N force.

b.)The vertical component of the 5N force.​

Solution :

Horizontal component is given by :

=F cos θ

=5 cos 30°

= 5×0.866

= 4.33 N

Vertical component is given by :

= F sin θ

= 5 sin 30°

= 5×0.5

= 2.5 N

Therefore, horizontal and vertical component are 4.33 N and 2.5 N.

Hence, this is the required solution.

If we assume the same efficiency, then we can use Amdahl's Law to calculate the new runtime on 16 cores.

Amdahl's Law states that the speedup of a parallel program is limited by the portion of the program that must be executed sequentially. In this case, the portion that must be executed sequentially is (80-20)/80 = 0.75 or 75%. This means that only 25% of the program can be parallelized. Therefore, the speedup we can expect from doubling the number of cores is limited to 1/((1-0.25) + 0.25/8) = 1.85.
Using this speedup, we can calculate the new runtime on 16 cores as 20/1.85 = 10.81 seconds.

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Yes, The velocity of a ball is 1 m/s at a given instant of time. it is possible for the acceleration of the ball to be -1 at this instant.

If it is made sure that the other values are plugged in correctly, a positive velocity is capable of making a negative acceleration.

A moving item always experiences positive acceleration. An object that is slowing down always experiences negative acceleration. However it does not mean that negative acceleration always mean reduction in speed.

Deceleration always slows down motion. However, negative acceleration is just acceleration in the opposite direction according to the selected coordinate system. Negative acceleration might or might not be deceleration, and vice versa for negative acceleration.

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Answer:

the time required is 0.886 seconds

Explanation:

The computation is shown below:

As we know that the content of the chemical energy that has a calorific value of hydrogen is 141790 kJ /kg

And, the total energy stores is 100,000 kg

Now

E = 141790 ×  100,000 kJ

= 14.179 TJ

The time would be

T = E ÷ P

= 14.179 ÷ 16

= 0.886 sec

hence the time required is 0.886 seconds

The electric field strength at a distance of 1.20 m on the x-axis is -1.5 × 10⁴ N/C.

To find the electric field strength at a distance 1.20 m on the x-axis, we can use Coulomb's law:

\($$F=k\frac{q_1q_2}{r^2}$$\)

where F is the force between two charges, q1 and q2 are the magnitudes of the charges, r is the distance between the charges, and k is the Coulomb constant.For a single point charge q located at the origin of the x-axis, the electric field E at a distance r is given by:

\($$E=\frac{kq}{r^2}$$\)  where k is the Coulomb constant.

So, let's calculate the electric field due to each charge separately and then add them up:

For the +2.0 C charge at x = 0, the electric field at a distance of 1.20 m is:\($$E_1=\frac{kq_1}{r^2}=\frac{(9\times10^9)(2.0)}{(1.2)^2}N/C$$\)

For the -3.0 C charge at x = 0.40 m, the electric field at a distance of 1.20 m is:

\($$E_2=\frac{kq_2}{r^2}\)

\(=\frac{(9\times10^9)(-3.0)}{(1.20-0.40)^2}N/C$$\)

The negative sign indicates that the direction of the electric field is opposite to that of the positive charge at x = 0.

To find the net electric field, we add the two electric fields\(:$$E_{net}=E_1+E_2$$\)

Substituting the values of E1 and E2:

\($$E_{net}=\frac{(9\times10^9)(2.0)}{(1.2)^2}-\frac{(9\times10^9)(3.0)}{(0.8)^2}N/C$$E\)

net comes out to be -1.5×10⁴ N/C.

Therefore, the electric field strength at a distance of 1.20 m on the x-axis is -1.5 × 10⁴ N/C.

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Answer:

He traveled 9km

Explanation:

To do this problem you need to use the equation which is Speed= distance/time and this problem gives you the speed which is 18 km/h and it gives you the time 1/2 hour so you write the equation 18= d/ 1/2 which his distance is 9km

Scientists can obtain information about water levels, temperatures, and ocean salinity from fossils that provide evidence of changes in Earth's climate over time.

By examining the types of organisms found in different layers of rock, scientists can determine what the climate was like during that time period. For example, the presence of coral reefs in rocks that are now located in a desert environment suggests that the area was once covered by water.

Similarly, the presence of fossils of cold-water organisms in rocks that are now located in a warm climate suggests that the temperature has changed over time. Scientists can also use fossils to track the movement of continents and understand the causes of mass extinctions, which can be linked to climate change. Overall, fossils provide valuable insights into the history of Earth's climate and how it has evolved over millions of years.

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The mechanical advantage of the pulley is  8.

A mechanical advantage is a form of calculation that measures the amplified force taken by the mechanical system.

Mechanical advantage is a measure of the force amplification achieved by using a tool, mechanical device or machine system.

Mathematically, the formula for mechanical advantage is given as;

M.A = L/E

where;

The mechanical advantage of the pulley is calculated as follows;

M.A = 800 N / 100 N

M.A = 8

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Answer:Control S, Command S on MAC=Save

According to Wien's law, the color of the sun should be a bright white or slightly bluish-white. This is because Wien's law states that the peak wavelength of the sun's radiation is in the ultraviolet region, which corresponds to a color on the blue end of the visible spectrum.

However, since the sun emits radiation across a broad range of wavelengths, it appears as a bright white ball in the sky to the human eye.

Based on Wien's Law, the Sun's color is primarily white. Wien's Law helps determine the peak wavelength of radiation emitted by a black body, such as the Sun, based on its temperature. The Sun's surface temperature is around 5,500°C (9,932°F), which corresponds to a peak wavelength in the visible light spectrum, causing it to appear white to the human eye.

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1) Do > 2f

Do means object distance

2f means 2 x focal length

2 x focal length = radius of curvature

When an object is placed beyond the radius of curvature, a real image is formed between the radius of curvature and focus. The image size is reduced. The sketch is shown below

Answer:

F = 12.52 N

Explanation:

Given that,

Charge, q₁ = -2 C

Charge, q₂ = 5 C

The distance between charges, d = 84,752 m

We need to find the force between the two charges. The force between two charges is given by :

\(F=k\dfrac{q_1q_2}{d^2}\\\\F=9\times 10^9\times \dfrac{2\times 5}{(84752)^2}\\F=12.52\ N\)

So, the force between charges is 12.52 N.

The angular acceleration of the pulley can be determined by considering the forces acting on the system and the moment of inertia of the pulley. Based on the task, the angular acceleration of the pulley is 2.45 rad/\(s^{2}\).

The angular acceleration of the pulley can be determined by considering the forces acting on the system and the moment of inertia of the pulley. The net force acting on the system is given by the weight of the hanging mass, which creates a tension in the rope that is transferred to the pulley. The tension in the rope produces a torque on the pulley, given by:

The tension in the rope produces a torque on the pulley, given by:

τ = T * r

where,

T = the tension in the rope

r = the radius of the pulley.

The net torque on the pulley can be used to determine its angular acceleration, given by:

α = τ / I

where,

I is the moment of inertia of the pulley, given by:

I = (1/2) * m * \(r^{2}\) + m * \(r^{2}\)

where m is the mass of the pulley.

Substituting the values, we get:

α = (T * r) / ((1/2) * m *  \(r^{2}\) + m *  \(r^{2}\))

= (5 * 9.8 * 0.5) / ((1/2) * 20 * \(0.5^{2}\) + 20 * \(0.5^{2}\))

= 49 / 20

= 2.45 rad/\(s^{2}\)

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Answer:

Food accounts for 10-30% of a household's carbon footprint, typically a higher portion in lower-income households. Production accounts for 68% of food emissions, while transportation accounts for 5%.

Explanation:

Answer: Food accounts for 10-30% of a household's carbon footprint, typically a higher portion in lower-income households.

Explanation:

Answer:

b. between 2 s and 4 s

Explanation:

2-4 was both 3m/s

It is neither parallel to the current element nor radial from the current element to the point in space.

A current element produces a magnetic field in the region surrounding it due to the flow of electric charges.

To understand the direction of the magnetic field at any point in space,

we can use the Biot-Savart Law.
Step 1: Consider a small current element (a section of a wire carrying current) with current I.
Step 2: Identify a point P in space where you want to determine the magnetic field produced by the current element.
Step 3: Draw a vector from the current element to point P, known as the radial vector.

This vector points from the current element towards the point P in space.
Step 4: The magnetic field produced by the current element at point P is perpendicular to both the current element and the radial vector.

This can be found using the right-hand rule.
Step 5: To apply the right-hand rule, point your thumb in the direction of the current and curl your fingers in the direction of the radial vector.

The direction in which your palm is facing is the direction of the magnetic field.
The magnetic field produced by the current element points in a direction that is perpendicular to the current element and to the radial direction.

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Answer:

trust the process

Explanation:

quadratic formula, use synthetic division also use the p-q method for the roots and factoring.

Answer:

friction

air drag

every thing that opposes the motion affects kinetic energy

Explanation:

kinetic energy is a energy which is increase with increase in motion and potential energy is energy stored while the object is at rest

potential energy ∝ 1/(kinetic energy)

as kinetic energy increases potential energy decreases

Weight change from place to place because it is a strong function of gravity. Recall that mass is universally constant. Hence weight varies becuas gravity varies. Meaning that a body will not weigh the same amount every where across the earth surface.

If the steel beam is being lowered at steady speed by a crane using a single cable, then there would be three force vectors shown on a free-body diagram. These vectors are:

The weight of the steel beam, which acts downwards towards the Earth. The tension force in the cable, which acts upwards and is equal in magnitude to the weight of the beam. This force is applied by the crane and is transmitted to the beam through the cable. The air resistance force, which acts upwards and opposes the motion of the beam. This force is usually small and can be neglected if the beam is moving at a steady speed. Therefore, to draw a free-body diagram of the steel beam being lowered by a crane using a single cable, three force vectors would be shown: the weight of the beam acting downwards, the tension force in the cable acting upwards, and the air resistance force acting upwards if it is significant.

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Answer:

The velocity of the nickel just before it hits the ground is approximately 49.3 m/s

Explanation:

In order to calculate the velocity of the nickel just before it hits the ground, we recall the kinematic equation of motion, v² = u² + 2·g·h, where the variables of the equation are defined as follows;

v = The velocity of the nickel just before it hits the ground after it is pushed off the observation deck

u = The initial velocity of the nickel just before it is pushed off the observation deck = 0 m/s

g = The acceleration due to gravity = 9.8 m/s²

h = The height from which he nickel is pushed off the edge = 124 m

Substituting the given values and the constant, "g", we have;

v² = 0² + 2 × 9.8 × 124 = 2,430.4

v = √2,430.4

Using a graphing calculator, we have;

v = √2,430.4 = 14·√(62/5) ≈ 49.3

The velocity of the nickel just before it hits the ground = v ≈ 49.3 m/s.

Answer:

Explanation:

Generally, an increase in temperature increases the rate of a chemical reaction. Consequently, when the temperature of a reaction is raised, the molecules present in the reaction interact faster by colliding with one another and surpassing the effective collision of such reaction to bring about a high reaction rate. Similarly, in the case of the rocket launch, the same process occurs as the temperature increase will cause an increase in the reaction rate leading the hydrogen from the acid to react explosively with the oxygen from the base to form water - this makes the rocket defy gravity and launch upward.

Answer:

t = 4.28 s

Explanation:

The horizontal speed of a marble = 7 m/s

The horizontal displacement covered by the marble = 30 m

We need to find the time for which the marble is in air. Let the time is t. Using the formula for speed to find it as follows :

\(s=\dfrac{d}{t}\\\\t=\dfrac{d}{s}\\\\t=\dfrac{30\ m}{7\ m/s}\\\\=4.28\ s\)

So, it will in the air for 4.28 s.

Stars form from molecular clouds through a process known as stellar formation.

These clouds, characterized by low temperatures and high densities, provide the ideal conditions for atoms to combine and form molecules. With a mass range spanning from a few solar masses to millions of solar masses, molecular clouds serve as the birthplaces of new stars. The Pleiades cluster serves as a notable example of stars that have recently formed within such a stellar nursery.

The formation of stars from molecular clouds involves several key steps. Firstly, gravitational forces acting on regions of higher density within the cloud cause them to collapse under their own gravity. As the cloud collapses, it begins to fragment into smaller, denser clumps called protostellar cores. These cores continue to collapse, and their central regions become increasingly dense and hot. At this stage, they are known as protostars.

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The statement, "The Voyager 1 space probe can't change its own motion" is correct and true. The Voyager 1 space probe was launched by NASA in 1977, and since then it has traveled over 14 billion miles away from Earth. It's the most distant spacecraft from Earth.

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Answer:

Helo ....

so this answer would be First class levers

becoz...

First-class levers have a considerable practical advantage over the other types of levers. They convert a downward moving force into a lifting force

is it possible to mark it brainliest <3

Answer:

the answer seems to be B