If you want to return to the road after driving off the road, a driver should do what?

Answer: 27Ω

Explanation:

Quando o circuito está em série, a resistência total é igual ao somatório das resistências parciais do circuito.

Answer: A gram of gold is worth about $25, so 2 grams or better would be viewed as high-grade for bulk tonnage mining.

Explanation:

i looked it up.

Answer: d) the elements in two compounds switch places

Explanation: just took it

Answer:

imma have to come back to you on that one

Answer:

The Sun is at the center of the solar system and the planets move around it.

Explanation:pluto/edmentum

The work done in pumping all the liquid out of the tank is 2500π lb-ft.

The potential energy of an object is given by the formula:

PE = mgh

Given:

Density of oil = 50 lb/ft^3

Diameter of the tank = 10 ft ( r = 5 ft)

To calculate the work done, we need to find the mass of the oil and the height it is lifted. Let's start by finding the mass:

Volume of oil in the tank:

The volume of a hemisphere = (2/3) * π * (r^3)

Volume = (2/3) * π * (5^3) = (2/3) * π * 125 = 250π/3 ft^3

Mass of the oil:

Mass = Volume * Density = (250π/3) * 50 lb

Now, we need to find the height of the tank. For a hemisphere, the height is equal to the radius (5 ft).

Finally, we can calculate the work done:

Work = PE = mgh = (250π/3) * 50 lb * 5 ft

Work = (250π/3) * 50 * 5 lb-ft

       = 2500π lb-ft

So, the work done in pumping all the liquid out of the tank is approximately 2500π lb-ft.

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The matter in the accretion disc is heated to extremely high temperatures, which ultimately lead to the emission of photon radiations, as the speed of the infalling particles becomes more random or chaotic.

We are aware that disordered microscopic particle motion, as defined, is thermal motion and is hence directly related to temperature. The most significant features in the universe are accretion discs, which can be found even in tight binary stars, surrounding smaller stars or stellar remnants, in spiral galaxy centers, in quasars, and they can even form in gamma-ray bursts. The shape of the accretion disc might vary. It could be planar or spherical.

They are bumping into other gas particles as they move. As a result, the movement's direction changes, and it now moves randomly. Particles that are travelling at random make up gas.

They are bumping into other gas particles as they move.

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The gas has a higher density of bigger particles. The motions of an accretion disc are easier on smaller particles than on larger ones. The density of the material (also known as its specific mass).

Mass in volume per unit. Although density can also be symbolised by the Latin letter D, the most typical mark is (the lower case Greek letter rho). A essential quality of a body is its mass. It was widely believed to be connected to the volume of matter in a physical body before to the atom's discovery and the development of particle physics. Theoretically, the same chemical might be included in different atoms and elementary particles. A essential quality of a body is its mass.

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The rock will take 3.61 seconds to hit the surface of the water.

The equations of motion can be described as the equation that described the relationship between the velocity (v & u), acceleration, time, and displacement (S) of a moving body.

The mathematical  expression of the equations of motion:

\(v = u +at\\S = ut +(1/2)at^2\\v^2-u^2 = 2aS\)

Given, the height of the bridge from the ground, h = 64.0 m

The gravitational acceleration on the rock, g = 9.8 m/s²

The initial speed of the rock, u = 0

From the 2nd equation of motion, calculate the time rock takes to hit the surface of the water:

h = ut + (1/2)gt²

64.0 = 0×t + (1/2)× 9.8×t²

t² = 64 ×2/9.8

t = 3.61 s

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Responding variable

Explanation:

To store 2.70x10^-3 J of electrical energy, capacitance c3 in the network must be 2.67μF. This can be calculated using the formula for energy stored in a capacitor network.

A network of capacitors is a collection of capacitors wired into a circuit. The capacitors store electrical energy as an electric field between their plates when a voltage is applied across the network. The formula E = 1/2 * C * V2 may be used to determine the total energy held in a capacitor network, where E is the energy held, C is the network's total capacitance, and V is the applied voltage. The capacitances of c1, c2, and c4 in this instance are specified as 4.00 F, 4.00 F, and 8.00 F, respectively. It is possible to determine that the capacitance c3 has to be 2.67 F to store 2.70 x 10-3 J of electrical energy by rearranging the formula and inserting the numbers.

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Answer:

120.48hz

Explanation:

f=1/t..........

Either the wavelength, velocity, or wave period—the amount of time it takes for a wave cycle to complete—must be known. If you know the period, divide 1 by it and, if necessary, convert it to seconds. The outcome will be the frequency in Hertz.

As with all waves, the relationship between the speed of sound, its frequency, and its wavelength is vw=f, where vw is the speed of sound, f is the frequency, and is the wavelength.It is necessary to know either the wavelength, the velocity, or the wave period, which is the duration of a wave cycle.

Therefore, More oscillations are produced at higher frequencies. Hertz are the frequency measurement units (Hz). Noises between 20 Hz and 20,000 Hz can be heard by those with normal hearing. Ultrasound is a term for frequencies greater than 20,000 Hz.

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Answer:

a c d

Explanation:

yeet

Answer:

a c d

Explanation:

Answer:

194 kg m²

Explanation:

Use parallel axis theorem:

I = I₀ + mr²

I = 25 kg m² + (1 kg) ((5 m)² + (12 m)²)

I = 25 kg m² + 169 kg m²

I = 194 kg m²

The four components of the physical universe are matter, energy, space, and time.

The four components of which the entire physical universe exists are:

Matter: All the physical substances that make up the universe, including everything from stars and planets to subatomic particles, are made of matter.

Energy: Energy is a property of matter that can be transformed, but cannot be created or destroyed. It comes in many forms, including kinetic energy, thermal energy, and electromagnetic energy.

Space: Space is the three-dimensional framework in which all matter and energy exist. It provides the canvas on which the universe unfolds and shapes the way objects interact and move.

Time: Time is the dimension in which change occurs. It is essential for the universe to exist and for events to unfold in a causal and ordered manner.

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Answer:

standard

Explanation:

we sometimes use weights of known mass to balance with an object of unknown mass to determine that objects weight.

Answer:

I say that the answer is D all of the above hope this helps ‍♂️

A subtype discriminator is the attribute in the supertype entity that determines to which entity subtype each supertype occurrence is related. Option (a) is correct.

The entity supertype is a concept in a database schema that represents a group of entities that share the same attributes or characteristics. A subtype is a subset of entities that possess specific distinguishing characteristics or attributes that are not present in the supertype. A subtype will have at least one different attribute or relationship, apart from all of the characteristics that the supertype contains.

A subtype is a refinement of a supertype entity. An entity type, known as the supertype, has multiple subtypes that can be derived from it. Subtypes may be exclusive (disjoint) or nonexclusive (overlapping). Exclusive subtypes contain nonoverlapping entities, whereas nonexclusive subtypes have overlapping entities.

Supertype and subtype entities can be used in conjunction with the entity-relationship model. A subtype is a distinct entity that has one or more attributes that are specific to it but not present in its supertype. The subtype of an entity is said to be derived from its supertype by extension or specialization.

Therefore, option (a) is correct.

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(a) The distance travelled by the object is  100 m.

(b) The displacement of the object in time interval between t = 0 s and t = 10 s is 60 m.

(a) The distance travelled by the object is calculated from the total area of the curve.

total distance = area of triangle 1 + area of triangle 2 + area of rectangle.

total distance = (¹/₂ x base x height)₁ +  (¹/₂ x base x height)₂ + length x width

total distance = (¹/₂ x 6 s x 20 m/s) +  (¹/₂ (8 - 6) 20) + (10 - 0)(10 - 8)

total distance =  60 m + 20 m + 20 m

total distance = 100 m

(b) The displacement of the object in time interval between t = 0 s and t = 10 s is calculated as follows;

displacement = final position - initial position

displacement =  (¹/₂ x base x height)₁ +  (¹/₂ x base x height)₂ + length x width

displacement = (¹/₂ x 6 s x 20 m/s) +  (¹/₂ (8 - 6) (-20)) + (10 - 0)(10 - 8)

displacement = 60 m - 20 m + 20 m = 60 m

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Answer:

(a) 305.83 m/s

(b) +89° to the horizontal

(c) 305.83 m/s

(d)+89° to the horizontal

Explanation:

The speed of the (air)planes = 165 m/s

The height from which the planes release the fuel tank = 3.38 km

The direction of one of the plane (plane A) at the time of release = 15° above the horizontal

The direction of the other plane (plane B) at the time of release = 15° below the horizontal

(a) The velocity of the plane is given as follows;

\(v_y\) = v₀·sin(θ₀) - g·t

At maximum height, \(v_y\) = 0

v₀·sin(θ₀) = g·t

t = 165×sin(15)/9.81 ≈ 4.35 s

The maximum height = 165×sin(15)×4.35  - 1/2×9.81×4.35 ² ≈ 92.95 m

The magnitude of the vertical velocity when the tank touches the ground is given as follows;

v² = u² - 2·g·s

u = 0

s = 3.38 + 0.09295 ≈ 3.47 km

v² = 2 × 9.81 × 3473

\(v_y\) ≈ 261 m/s

The horizontal velocity = 165 × cos 15 ≈ 159.4 m/s

The magnitude = √(261² + 159.4²) ≈ 305.83 m/s

(b) The direction = tan^(-1)(261/159.4) ≈ 89° to the horizontal

(c) The time it takes the tank to reach the ground is given as follows;

v² = (165×sin(15))² + 2 × 9.81 × 3380 = 68139.33 m²/s²

v = 261.035 m/s

The horizontal velocity is the same as above = 159.4 m/s

The magnitude and direction will therefore be the same as for plane A which are

The magnitude = √(261² + 159.4²) ≈ 305.83 m/s

(d)The direction = tan^(-1)(261/159.4) ≈ 89° to the horizontal

The reaction involving CO2(g) can be represented as follows:

CO2(g) ⇌ CO(g) + 1/2 O2(g)

We are given that 4.50 mol of CO2(g) is placed in an 8.50 L container. Let's assume that x mol of CO2(g) reacts to form CO(g) and O2(g). Therefore, the initial concentration of CO2 is (4.50-x) mol/L and the initial concentrations of CO and O2 are both zero. At equilibrium, the concentrations of CO and O2 are both x mol/L. The equilibrium concentration of CO2 can be found using the ideal gas law:

(4.50 - x) mol/L = (n/V) = (P/RT) = [(1/2)(x mol/L)] / [(0.08206 L·atm/(mol·K))(T)]

where P is the partial pressure of the gases, R is the gas constant, and T is the temperature in Kelvin. Rearranging this equation gives:

x = 0.987 mol/L

Therefore, the equilibrium concentrations of CO, O2, and CO2 are 0.987 mol/L, 0.987 mol/L, and 3.51 mol/L, respectively.

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To maximize the objective function p with the given constraints, we use linear programming by identifying the feasible region.

Finding corner points, evaluating p at each point, and selecting the point with the maximum value of p.In this case, the given constraints are x = 0, y = 0, 2x + 2y = 4, and x + y = 8. To maximize the objective function p, we follow these steps:Identify the feasible region by graphing the constraints on a coordinate plane.

The corner points, which represent the vertices of the feasible region.Evaluate the objective function p at each corner point.Select the point with the maximum value of p as the optimal solution that maximizes p while satisfying the given constraints.

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a) When voltage drops by 15%, the current remains the same. ; b) If the resistance of the device were reduced by 15% the current is 4.76 A.

(a) The voltage in the first instance is 240 V. Therefore, a voltage drop of 15% means that the new voltage will be

240 V - 15% × 240 V

= 240 V - (15/100) × 240 V

= 204 V.

Since P = VI and assuming that the power (P) remains the same, then the new current is given by:

5.6 A = P/240 V ,

therefore P = 5.6 A × 240 V

= 1344 W.5.6 A

= 1344 W / 240 V,

therefore 5.6 A = 5.6 A.

When voltage drops by 15%, the current remains the same.

(b) If the resistance is reduced by 15%, it implies that the new resistance (R₁) is 85% of the initial resistance (R₀) so that R₁ = 0.85R₀.

Since P = VI and P = V²/R, the new current, I₁ is given by: P = I₁V₁= I₀V₀,

which implies that I₁ = I₀ × V₀/V₁

= I₀ × R₁/R₀.

For the initial condition, the current is given by 5.6 A.

Therefore, the new current, I₁ is given by:

I₁ = I₀ × R₁/R₀

= 5.6 A × (0.85R0 / R₀)I₁

= 4.76 A.

Therefore, the current is 4.76 A.

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The given statement "With increasing temperature, the intrinsic density of electrons and holes increases." is true. Intrinsic density refers to the density of electrons and holes in the intrinsic semiconductor material.

With the increase in temperature, more electrons and holes are created by thermal energy which leads to an increase in their intrinsic density. The intrinsic density of carriers increases with an increase in temperature since the thermal energy breaks down some of the covalent bonds which generate more free carriers. Hence, the statement "With increasing temperature, the intrinsic density of electrons and holes increases" is true.

Each diode has its maximum supported current which is based on its physical characteristics such as its construction, size, and thermal properties. It is one of the most significant parameters to consider when designing electronic devices that depend on diodes. The maximum current rating for a diode is provided by the manufacturer and should not be exceeded to avoid damage.

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Answer:

50%

Explanation:

If a light bulb uses 60J of electrical energy and produces 30 J of light energy, the percent efficiency of the light bulb is 50%.

The total amount of beneficial work accomplished, excluding waste and spoilage, is known as output or work output.

This pulp creates 30 jewels' worth of light energy, for a total of 60 jewels. So that's the energy output. Let's use E. O. to symbolize it. Those are 30 Jews.

Additionally, we must calculate the light bulb's efficiency %. Therefore, we will start by computing the efficiency, which is defined as the ratio of energy output to energy input in this book.

And 30/60 is the efficiency that we obtain. Moreover, this is 1 x 2.

The straightforward ratio between output and input energy—by 100. And the result is that this is 50%. That is the required efficiency percentage for this light bulb.

Therefore, the percent efficiency of the light bulb is 50%

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Answer:

pressure - A

Friction-E

Force-B

Weight-C

Fluid-D

Explanation: I just remember my vocab words and i had those

Answer:

The Ray Population Increases

Explanation:

This happens because the great white eats bigger animals

True

The rate at which work is done is referred to as power. A task done quite quickly is described as having a relatively large power. The same task that is done more slowly is described as being of less power. Both tasks require he same amount of work but they have a different power.

The final velocity of the ball after 4s will be 5.25m/s2.

Velocity of a body is its speed and the direction in which it is moving.

Velocity is the directional speed of an object in motion as an indication of its rate of change in position as observed from a particular frame of reference and as measured by a particular standard of time (e.g. 60 km/h northbound).

It can also be described as the instantaneous rate of change of the body's distance traveled, and the direction in which the distance is changing.

Velocity is a vector quantity as it has both magnitude and direction.

From the question;

displacement, s = 21m

time = 4s

Velocity = displacement / time

Velocity = 21/4

Velocity = 5.25m/s2

Hence, the ball would move with a velocity of 5.25m/s2.

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Answer: 115 N

Explanation:

In this case, the ball has a weight of 15 N (force due to gravity) acting on it and the cannon is shooting it with a force of 100 N.

To find the net force on the ball, we add the forces acting on it.

Net force = force due to gravity + force due to the cannon

Net force = 15 N + 100 N

Net force = 115 N

So, the net force on the ball will be 115 N. ✅

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