If a rolling ball had 18 joules of KE and is rolling 3 m/s, what is the mass?

These values for input resistance, output resistance, and voltage gain are just general guidelines, and the specific values would vary depending on the amplifier design and application.

When designing the perfect amplifier, there are several essential features to consider. Firstly, the input resistance should be high to prevent loading of the source and ensure accurate signal transfer. A typical value for input resistance could be around 10 kilohms (kΩ).

Secondly, the output resistance should be low to effectively drive the load and minimize signal degradation. A value of around 100 ohms (Ω) would be ideal for output resistance.

Lastly, voltage gain is a crucial parameter that determines the amplification of the input signal. The desired value for voltage gain depends on the specific application and requirements. It can range from a few decibels (dB) to several hundred dB.

These values for input resistance, output resistance, and voltage gain are just general guidelines, and the specific values would vary depending on the amplifier design and application.

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(A) The pressure transients at the mid-point of the pipeline are approximately 1,208,277 Pa.
(B) Friction in the pipeline affects the calculated pressure transients by increasing the overall resistance to flow

(a) The pressure transients at the mid-point of the pipeline can be calculated using the water hammer equation. Water hammer refers to the sudden changes in pressure and flow rate that occur when there are rapid variations in fluid flow. The equation is given by:

ΔP = (ρ × ΔV × c) / A

Where:

ΔP = Pressure change

ρ = Density of water

ΔV = Change in velocity

c = Wave speed

A = Cross-sectional area of the pipe

First, let's calculate the change in velocity:

ΔV = Q / A

Q = Flow rate = 0.12 m/s

A = π × ((d/2)^2 - ((d-2t)/2)^2)

d = Internal diameter of the pipe = 300 mm = 0.3 m

t = Pipe wall thickness = 5 mm = 0.005 m

Substituting the values:

A = π × ((0.3/2)^2 - ((0.3-2(0.005))/2)^2

A = π × (0.15^2 - 0.1495^2) = 0.0707 m^2

ΔV = 0.12 / 0.0707 = 1.696 m/s

Next, let's calculate the wave speed:

c = √(E / ρ)

E = Young's modulus of steel = 210x10^9 Pa

ρ = Density of water = 1000 kg/m^3

c = √(210x10^9 / 1000) = 4585.9 m/s

Finally, substituting the values into the water hammer equation:

ΔP = (1000 × 1.696 × 4585.9) / 0.0707 = 1,208,277 Pa

Therefore, the pressure transients at the mid-point of the pipeline are approximately 1,208,277 Pa.

(b) Friction in the pipeline affects the calculated pressure transients by increasing the overall resistance to flow. As water moves through the pipe, it encounters frictional forces between the water and the pipe wall. This friction causes a pressure drop along the length of the pipeline.

The presence of friction results in a higher effective wave speed, which affects the calculation of pressure transients. The actual wave speed in the presence of friction can be higher than the wave speed calculated using the Young's modulus of steel alone. This higher effective wave speed leads to a reduced pressure rise during the transient event.

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Answer:

Speed: 109.4–120.7 km/h (68.0–75.0 mph)

Strength: Couldn't find out.

Explanation:

Answer:

V = √ ( 6.65² + 9.87² ) ≈ √ 141.64 = 11.90 mph

Using the gravitational force, the mass of item 1 and object 2, and the Newton's law of gravity calculator, one may calculate the distance between two objects.

g = GM/r2, where M is the Earth's mass, r is its radius (or the distance from the Earth's center to where you are standing), and G is the gravitational constant. The gravitational constant is G (without the subscripts), while the speed of light is c.

By applying Newton's equation, we can accomplish this quite easily: forcegravity is defined as G M m2 separation. Suppose that you weigh 60 kilograms and your colleague weighs 70 kilograms. The center-to-centre distance, r, is 1 m, and the gravitational constant, G, is 6.67 10 -11 newtons square meter kilogram-2.

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Answer:

3.the distance away from the sun where it to hot or too cold for life to exist

Answer:

\(31.7\:\mathrm{N}\)

Explanation:

We can use basic trig in a right triangle to solve this problem. Let the x component of the force be \(x\). We have the following equation:

\(\cos 24^{\circ}=\frac{x}{34.7},\\x=34.7\cos 24^{\circ}\approx \boxed{31.7}\)

Answer:

(a) the height of the diving board is 22.896 m

(b) the horizontal distance traveled by the girl is 7.02 m

(c) if she had just drop off the board, her time to drop to the water would have been longer.

Explanation:

Given;

initial speed of the girl, u = 3.9 m/s

time to hit the water, t = 1.8 s

(a) the height of the diving board is calculated as;

h = ut + ¹/₂gt²

h = (3.9 x 1.8)  +  ¹/₂ x 9.8 x 1.8²

h = 7.02 + 15.876

h =  22.896 m

(b) the horizontal distance traveled by the girl is calculated as;

X = ut

X = 3.9 x 1.8

X = 7.02 m

(c) if she just drop off the board, then the initial speed will be zero;

h = ut + ¹/₂gt²

h = 0 + ¹/₂gt²

2h = gt²

\(t^2 = \frac{2h}{g} \\\\t = \sqrt{\frac{2h}{g} } \\\\t = \sqrt{\frac{2 \ \times\ 22.896 }{9.8} }\\\\t = 2.16 \ s\)

Thus, if she had just dropped off the board, her time to drop to the water would have been longer.

Since it is the data value that appears in the set the most frequently, 13 colonies is regarded as the set's mode. So, C is the best choice.

A collection of bacteria descended from the same mother cell is referred to as a "bacterial colony." A colony is a group of visible microorganisms that have all descended from a single mother cell; as a result, it is a genetically identical clone of bacteria.

The growth pattern of the organism on or on medium is given a lot of consideration when identifying bacteria and fungi. The most frequent number, or the one that appears the most frequently, is referred to as the mode.

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Answer:

A. gravity

or gravitational force

Mark as brainliest if this helped

Peace

The airline will need to have at least 167 passengers on each flight to break even.

To calculate the number of passengers needed to break even, we need to consider the total costs and the revenue generated per flight.

The total cost per flight consists of the fixed costs (£25,000) and the variable costs (£75 per passenger). The revenue per flight is determined by the ticket price (£225) multiplied by the number of passengers.

Let's denote the number of passengers as 'P'. The total cost per flight is given by:

Total Cost = Fixed Costs + (Variable Cost per Passenger * Number of Passengers)

Total Cost = £25,000 + (£75 * P)

The revenue per flight is given by:

Revenue = Ticket Price * Number of Passengers

Revenue = £225 * P

To break even, the total cost should equal the revenue:

£25,000 + (£75 * P) = £225 * P

Now, we can solve this equation for P to find the number of passengers needed to break even:

£25,000 + (£75 * P) = £225 * P

£25,000 = £225 * P - £75 * P

£25,000 = £150 * P

P = £25,000 / £150

P ≈ 166.67

Since the number of passengers must be a whole number, we round up to the nearest whole number:

P = 167

The airline will need at least 167 passengers on each flight to break even. However, since the maximum capacity of the aircraft is 200 passengers, the airline will need to fill the aircraft to its maximum capacity to break even on each flight.

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Answer:

32m/s

Explanation:

obtained from V=vx square roo+ vy square root but all terms are squared.

Power will treble with an increase in voltage. The current (or flow of electrons) will rise in direct proportion to the voltage (or electrical pressure) in a circuit; for example, doubling the voltage will result in a doubling of the current flow. Thus, option D is correct.

The voltage and resistance in a circuit that prevent current flow determine how many current flows through it. Similar to voltage, resistance is a number that depends on two locations.

According to Ohm's law, the voltage (V) and resistance (R) in a circuit are both inversely correlated with the electrical current (I) that flows through the circuit (R). Since the resistance of the circuit remains constant, if the voltage is raised, the current will rise as well.

Therefore, current would increase in the power source.

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The correct answer to the following expression that correctly compares the energies of visible light, microwaves, and radio waves is as follows;Option (b) eradio > emicrowave > evisible

Energy of electromagnetic waves increases as the frequency increases. This means that the energy of microwaves is greater than that of radio waves, and the energy of visible light is greater than that of microwaves.

Therefore, eradio < emicrowave < evisible

The electromagnetic spectrum is the range of frequencies of electromagnetic radiation. Electromagnetic radiation is made up of photons, which are packets of energy. The energy of electromagnetic radiation depends on its frequency. The higher the frequency, the more energy the radiation has.

Therefore, eradio < emicrowave < evisible is the correct expression that compares the energies of visible light (evisible), microwaves (emicrowave), and radio waves (eradio).

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The slope of the line (in eV/Hz) represents the value of Planck's constant (h). This is because the equation for the photoelectric effect is E = hf - Φ, where E is the energy of the emitted electron, h is Planck's constant, f is the frequency of the incident light, and Φ is the work function of the metal. When the stopping voltage (related to the energy of the emitted electrons) is plotted against the frequency of the incident light, the slope of the line is equal to h/e, where e is the elementary charge (1.602 x 10^-19 C). Therefore, the slope of the line in this experiment represents the value of Planck's constant (h) divided by the elementary charge (e). To find the slope (in eV/Hz), you can simply divide the slope by e. In a photoelectric effect experiment, the relationship between the stopping voltage (V) and the frequency of light (ν) can be represented by the equation:
V = (h/ e) * ν - (W/ e)

where h is the Planck's constant (6.626 x 10^-34 Js), e is the elementary charge (1.602 x 10^-19 C), ν is the light frequency in Hz, and W is the work function of the metal in eV.
Given the work function W = 5.75 eV, we can calculate the slope of the straight line (in eV/Hz) in the stopping voltage vs. light frequency plot using the equation above:
Slope = (h/ e)

To find the slope, simply plug in the values of h and e:
Slope = (6.626 x 10^-34 Js) / (1.602 x 10^-19 C)
Slope ≈ 4.14 x 10^-15 eV/Hz
So, the slope of the line in the stopping voltage vs. light frequency plot is approximately 4.14 x 10^-15 eV/Hz.

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Answer:

c) affects

Explanation:

im like 90% sure

Answer:

Reflection involves a change in direction of waves when they bounce off a barrier.

Explanation:

Refraction of waves involves a change in the direction of waves as they pass from one medium to another. Refraction, or the bending of the path of the waves, is accompanied by a change in speed and wavelength of the waves.

In order to determine the probability that an electron can be detected in the middle one-third of a well region, we need to take into account the wave function and the boundary conditions.The wave function represents the probability density of finding the electron in a particular location within the well. The boundary conditions are determined by the geometry of the well, which can be rectangular, triangular, or other shapes.

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Cardiovascular drug classes are Beta-blockers, Diuretics, Calcium channel blockers, and ACE inhibitors. The correct answer is options are A, B, D, and F.

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The correct question would be as

Which of the following are cardiovascular drug classes? Select all that apply.

A) Beta-blockers

B) Diuretics

C) Antibiotics

D) Calcium channel blockers

E) Antidepressants

F) ACE inhibitors

The linear velocity in terms of the angular velocity is,

where,

The angular velocity in terms of the linear frequency is,

Thus, the linear velocity in terms of linear frequency is,

The linear velocity in terms of the displacement and time is,

The relation given in the first option is the expression for centripetal acceleration.

Thus, option a is the correct answer.

To calculate the plate separation for a capacitance of 1580 pF, you need to use the formula C = εA/. Without knowing the area of the plates, we cannot calculate the exact value of d

The required plate separation for a capacitance of 1580 pf can be calculated using the formula for capacitance:

C = ε₀ * A / d where C is the capacitance, ε₀ is the permittivity of free space (8.85  *\(10^{-12 }\) F/m), A is the area of the plates, and d is the plate separation. Rearranging the formula to solve for d, we get:

d = ε₀ * A / C

Plugging in the values for C, ε₀, and the dielectric constant for air (which we will denote as k), we get:

d = (\(8.85 * 10^{-12}\)F/m) * (1.00059) * A / (1580 *\(10^{-12 }\)F)

Simplifying, we get: d = (8.85 * 1.00059 * A) / 1580

Finally, we can solve for d to get the required plate separation:

d = \(5.604 * 10^{-9} * A\)

Without knowing the area of the plates, we cannot calculate the exact value of d. However, this formula shows the relationship between the plate separation, capacitance, and area of the plates.

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Answer:

A contact force is the push/pull that changes the velocity of a mass by physically touching it.

Example: muscular force, friction, or air resistance.

A non-contact force does the same without touching it.

Example: electrostatic force, gravity, or magnetism.

Answer:

is this a check all that apply or a single answer?

Answer:

42 grams

Explanation:

you multiply the value by 1000 to get your answer

The energy density (energy per unit volume) at a given location in space can be calculated by multiplying it by the energy's velocity. The units of power are split by the resulting vector's area.

What is an illustration of intensity?

The degree, volume, or magnitude of something is its intensity. Examples include fire, emotion, weather, work, or passion. The word "intensity" is occasionally linked to fervor, fire, and violence. It is employed when describing the intensity of something like a flame or possibly a love affair.

What is the level of scientific rigor?

The intensity of a wave is the amount of energy it transports over a surface in a unit of time and area. It is also equal to the energy density times the wave speed. Watts per square meter are typically used to measure it. A wave's strength and amplitude will affect intensity.

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The projectile was 1724.8 meters high short horizontally. Any object sent into space with only gravity acting on it is considered a projectile.

A projectile is any object that is cast, fired, launched, heaved, hurled, pitched, tossed, or flung. Throwing a ball straight up, kicking a ball and imparting momentum at an angle to the horizontal, or simply letting something fall freely are examples of projectile motion.

Cliff at speed of 44m/s

given time is 2 second

H equals u 2 sin 2 2 g.

H = 44 × 2 × 1 × 2 × 9.8

H = 1724.8 meters.

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Answer:

Given

mass (m) =5kg

velocity (v) =7.3m/s

kinetic energy (k. e) =?

Form

\(k.e = \frac{1}{2} MV {}^{2} \\ = \frac{1}{2} \times 5 \times 7.3 {}^{2} \\ 133.23kj\)

I hope this help

Answer:

d = Δv(t2-t1)

Explanation:

Speed is defined as the change of displacement with respect to time. It is expressed as shown;

Speed = change in displacement/change in time

Δv = d/Δt

d = Δv*Δt

d = ΔvΔt

Δt = t2-t1

d = Δv(t2-t1)

Δv is the change in rate of speed

Δt = change in time

The correct expression for the displacement of the car during this motion is d = Δv(t2-t1)

The displacement of the car at the given period is \(\Delta x = \Delta v (t_2 -t_1)\)

The given parameters;

The displacement of the car is calculated from the relationship between average velocity and displacement as shown below;

\(\Delta v = \frac{\Delta x }{\Delta t} \\\\\Delta x = \Delta t \times \Delta v\\\\\Delta x = \Delta v (t_2 -t_1)\)

Thus, the displacement of the car at the given period is \(\Delta x = \Delta v (t_2 -t_1)\)

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