I NEED HELP PLEASEE ITS AN ECONOMICS QUESTION ABOVE

The moment of inertia (I) will changes and net torque (Tnet) will also change, while the angular acceleration (a) remains constant.

The formula for net torque acting on an object is given as;

T(net) = Ia

where;

The  moment of inertia of an object is given as;

I ∝ MR²

where;

So mass, M changes, the moment of inertia (I) changes and net torque will also change, while the angular acceleration remains constant.

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It will take about 2,500 dump trucks to haul the material. Assuming the capacity of the dump truck is 16 cubic yards.

Note: A standard dump truck is between 10 -16 cubic yards.

1 cubic yard = 27 cubic feet.

from the question:

40,000 cubic yards= 65 cubic feet

hence,

Assuming the dump truck capacity is 16 cubic yards

Then,

number of dump trucks = 40,000 cubic yards/16 cubic yards

                                      =2,500

Therefore a dump truck of 16 cubic yards capacity, will need about 2,500 dump trucks to haul the material totaling 40,000 cubic yards.

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Answer:

10,800

Explanation:

The formula is MGH I hop this helps

In your business plan, the target market section should clearly identify both your primary and secondary market(s). The market analysis is basically the target market section of your business plan. It is a thorough examination of the ideal people to whom you intend to sell your products or services.

Answer:

A) 0.12 m

B) 11.5 degrees

A) Two convex lenses

D) Amplitude

A) 491.8 m

B) 2.92 m

C) 9.677 MHz

I couldn't see the options for number eight, so I'm unsure if this is correct, but I got 507.7 K in my calculations.

Answer:

true

Explanation:

Gravity (or the acceleration due to gravity) is 9.81 meters per second squared, on the surface of Earth, because of the size of Earth and the distance we are on its surface from its center.

Seems like some of your question is missin

Explanation:

False.

If inflation is expected to decrease in the future, and the real rate is expected to remain steady, then nominal interest rates are expected to decrease. In this scenario, the yield curve may be upward-sloping or flat, but it is not likely to be downward-sloping.

What is Inflation?

It means that the purchasing power of a unit of currency decreases over time, and one needs to spend more money to buy the same goods and services.

Inflation is usually measured using an inflation index, such as the Consumer Price Index (CPI) or the Producer Price Index (PPI). These indices measure the average price level of a basket of goods and services, such as food, housing, transportation, and healthcare, over time.

Inflation can have various causes, such as an increase in the supply of money, an increase in demand for goods and services, a decrease in the supply of goods and services, or a combination of these factors. Moderate inflation is generally considered to be beneficial for an economy, as it can stimulate economic growth by encouraging spending and investment. However, high or unstable inflation can lead to economic instability, as it erodes the value of savings, distorts relative prices, and creates uncertainty about the future.

A downward-sloping yield curve typically indicates an expectation of lower future growth and/or inflation. In contrast, a flat or upward-sloping yield curve indicates an expectation of steady or increasing growth and/or inflation.

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The coefficient of thermal conductivity (k) is related to the rate of heat flow (Q), the cross-sectional area (A), the length (L), the temperature difference (ΔT), and the thermal resistance (Rth) by the following equation:

k = Q / (A * ΔT * L) = Rth * (A * ΔT)

Reorganizing this equation gives:

Rth = k / (A * ΔT)

The given information in the problem is:

Rate of heat flow (Q) = 14.0 watts

Thermal resistance (Rth) = (350 mm × 350 mm × 15 mm) / (14.0 watts) = 31.5 mm⁴/C

Temperature difference (ΔT) = 28°C

Substituting these values into the equation, we have:

k = Q / (A * ΔT) = 14.0 W / (0.35 m² * 28°C) = 1.94 W/mK

So the coefficient of thermal conductivity (k) for this wood is approximately 1.94 W/mK.

Answer:

when it hit the moving bat

Explanation:

force equals mass times acceleration which means the moving bat will add more force to the ball.

Ball fly farther when it hit the moving bat, bat will add more force to ball.

A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction

force equals mass times acceleration which means the moving bat will add more force to the ball.

Ball fly farther when it hit the moving bat, bat will add more force to ball.

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Answer:

18 m/s

Explanation:

Range of a projectile on level ground is:

R = v₀² sin(2θ) / g

14.3 m = v₀² sin(2×13°) / 9.8 m/s²

v₀ = 17.9 m/s

Rounded to two significant figures, the launch speed was 18 m/s.

If the bullet is launched at an angle of 50 degrees above ground level, the target will be struck. The angle remains the same. The launch angle obtained is 50 degrees.

Given:

The initial shot was fired at an angle of 50 degrees above ground.

The projectile's starting velocity (v) and magnitude of velocity will remain constant if it is shot at the same pace.

Let the angle of the projectile is x,

The horizontal component of velocity can be calculated as follows:

\(v(x) = v * cos(x)\)

We can write:

since the horizontal part of velocity remains constant:

\(v(x1) = v(x2)\)

\(cos(50) = cos(x)\)

\(50 = x\)

Therefore, if the projectile is launched at the same speed at a 50° angle above ground level, it will strike the target.

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The correct response is given when the angle is asked a question.

Answer:

The acceleration of the proton is 2.823 x 10¹⁷ m/s²

The acceleration of the electron is 5.175 x 10²⁰ m/s²

Explanation:

Given;

distance between the electron and proton, r = 7 x 10⁻¹⁰ m

mass of proton, \(m_p\) = 1.67 x 10⁻²⁷ kg

mass of electron, \(m_e\) = 9.11 x 10⁻³¹ kg

The attractive force between the two charges is given by Coulomb's law;

\(F = \frac{k(q_p)(q_e)}{r^2}\)

where;

k is Coulomb's constant = 9 x 10⁹ Nm²/c²

\(F = \frac{k(q_p)(q_e)}{r^2} \\\\F = \frac{(9*10^9)(1.602*10^{-19})(1.602*10^{-19})}{(7*10^{-10})^2} \\\\F = 4.714 *10^{-10} \ N\)

Acceleration of proton is given by;

F = ma

\(F = m_pa_p\\\\a_p = \frac{F}{m_p}\\\\a_p = \frac{4.714*10^{-10}}{1.67*10^{-27}}\\\\a_p = 2.823 *10^{17} \ m/s^2\)

Acceleration of the electron is given by;

\(F = m_ea_e\\\\a_e = \frac{F}{m_e}\\\\a_e = \frac{4.714*10^{-10}}{9.11*10^{-31}}\\\\a_e = 5.175 *10^{20} \ m/s^2\)

Given:

By using Coulomb's law, the attractive force will be:

→ \(F = \frac{k(q_p) (q_e)}{r^2}\)

By substituting the values, we get

        \(= \frac{(9\times 10^9)(1.602\times 10^{-19}) (1.602\times 10^{-19})}{(7\times 10^{-10})^2}\)

        \(= 4.714\times 10^{-10} \ N\)

Now,

The acceleration of proton will be:

→ \(F = ma\)

       \(= m_p a_p\)

or,

→ \(a_p = \frac{F}{m_p}\)

        \(= \frac{4.714\times 10^{-10}}{1.67\times 10^{-27}}\)

        \(= 2.823\times 10^{17} \ m/s^2\)  

and,

The acceleration of electron will be:

→ \(F = m_c a_c\)

or,

→ \(a_e = \frac{F}{m_e}\)

        \(= \frac{4.714\times 10^{-10}}{9.11\times 10^{-31}}\)

        \(= 5.175\times 10^{20} \ m/s^2\)

Thus the above answer is correct.

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The temperature of the air mass when it has risen to a level at which atmospheric pressure is only 8.70×10⁴ Pa is approximately 14.3°C.

Using the ideal gas law, we can write: PV = nRT, where P is the pressure, V is the volume, n is the number of moles of gas, R is the gas constant, and T is the absolute temperature. Since the mass of air is not changing, we can write: PV = constant.

Applying this to the situation where the air mass rises to a level where the pressure is 8.70×10⁴ Pa, we get:

Dividing the second equation by the first and using the fact that γ=Cp/Cv=1.40 for air, we get:

Solving for T2, we get:

Thus, the temperature of the air mass when it has risen to a level at which atmospheric pressure is only 8.70×10⁴ Pa is approximately 14.3°C.

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Answer:

20kg = 40kil

Explanation:

Multiply 2.5 cubic feet by 94 pounds yields 208 pounds per bag.

The weight of a 20 kg sack of cement is 29.6N.

HOW TO CALCULATE WEIGHT:

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Answer:

Approximately \(3.967\; {\rm kg\cdot m\cdot s^{-1}}\).

Explanation:

Convert velocity to the standard units (meters per second):

\(\begin{aligned}v &= 246.2 \; {\rm km \cdot h^{-1}} \\ &= 246.2 \; {\rm km \cdot h^{-1}}\times \frac{1\; {\rm h}}{3600\; {\rm s}} \times \frac{1000\; {\rm m}}{1\; {\rm km}} \\ &\approx 68.389\; {\rm m\cdot s^{-1}}\end{aligned}\).

Convert mass to standard units (kilograms):

\(\begin{aligned} m &= 58\; {\rm g} \\ &= 58\; {\rm g} \times\frac{1\; {\rm kg}}{1000\; {\rm g}}\\ &= 0.058\; {\rm kg}\end{aligned}\).

When an object of mass \(m\) travels at a velocity of \(v\), momentum of that object would be \(p = m\, v\). In standard units, the momentum of this tennis ball would be:

\(\begin{aligned}p &= m\, v \\ &\approx (0.058\; {\rm kg})\, (68.389\; {\rm m\cdot s^{-1}}) \\ &\approx 3.967\; {\rm kg \cdot m\cdot s^{-1}}\end{aligned}\).

Answer:

It's true I took the test on Edge.

Explanation:

Answer:

True

Explanation:

Got it right on edg

The energy transferred by the heater that has a power of 2500W and is turned on for 180s is 450,000J.

Electrical energy is the energy made available for consumption or consumed in the form of electricity or electric power.

Electrical energy can be calculated as follows:

Electrical energy = Power x Time.

The total amount of electrical energy used depends on the total power used by all electrical devices and the total time they are used in the home.

According to this question, a heater has a power of 2500W and is turned on for 180 seconds. The energy can be calculated as follows;

E = 2500W × 180s

E = 450,000J

Therefore, 450,000J is the energy transferred to the heater.

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The reaction equations for the steps involved in the decay of U-238 to Ra-226 are;

\(^{238}_{92}U\ \rightarrow \ ^{234}_{90}Th \ + \ ^{4}_{2}He\)

\(^{234}_{90}Th \ \rightarrow \ ^{230}_{88}Ra \ + \ ^{4}_{2}He\)

\(^{230}_{88}Ra \ \rightarrow \ ^{226}_{86}Ra \ + \ ^{4}_{2}He\)

The radioactive equation for the decay of U-238 to Ra-226 is calculated as follows;

First the uranium atom (U-238) will decay thorium by emitting alpha particle as shown in the equation below;

\(^{238}_{92}U\ \rightarrow \ ^{234}_{90}Th \ + \ ^{4}_{2}He\)

The second stage is, the thorium will decay to radium by emitting alpha particles again as shown below;

\(^{234}_{90}Th \ \rightarrow \ ^{230}_{88}Ra \ + \ ^{4}_{2}He\)

The third, and final stage, the radium will decay to an isotope of radium again, by emitting alpha particle as shown below;

\(^{230}_{88}Ra \ \rightarrow \ ^{226}_{86}Ra \ + \ ^{4}_{2}He\)

Thus, the reaction equations for the steps involved in the decay of U-238 to Ra-226 are;

\(^{238}_{92}U\ \rightarrow \ ^{234}_{90}Th \ + \ ^{4}_{2}He\)

\(^{234}_{90}Th \ \rightarrow \ ^{230}_{88}Ra \ + \ ^{4}_{2}He\)

\(^{230}_{88}Ra \ \rightarrow \ ^{226}_{86}Ra \ + \ ^{4}_{2}He\)

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The most dense thing inside the column is the little star. It's pink, and it's resting on the bottom of the cylinder.

The red part under the star is the solid base that the cylinder is standing in. It's probably wood or plastic, it's not free to move, and it's not involved in the experiment.

Answer: That is not meant to be red, it‘s the bottom of the beaker. The star is at the very bottom of the beaker. it’s just the base of the beaker.

Answer:

A

Explanation:

A vector quantity is when the unit has magnitude (#) and direction and velocity is speed in a given direction.

Answer:

Vp = velocity of plane

Vpx = Vp cos 55 = 8 * .57 = 4.59 m/s      velocity of plane along x-axis

Vpy = Vp sin 55 = 8 * .82 = 6.55 m/s        velocity of plane along y-axis

If Wx = -3 m/s then

Vx = 4.59 - 3 = 1.59 m/s

Vy = 6.55 m/s      wind does not affect vertical speed

tan theta = Vy / Vx = 6.55 / 1,59 = 4.12

theta = 76.4 deg    above x-axis

V = (1.59^2 + 6.55^2)^1/2 = 6.74 m/s

The ranking of their accelerations from smallest to largest is: Turtle C, Turtle A, Turtle B.

Based on the given accelerations:

So the ranking of their accelerations from smallest to largest is: Turtle C, Turtle A, Turtle B.

Based on the given velocities:

As for the change in direction:

Turtle A is accelerating in the same direction as its velocity (North), so it's not changing direction, but its speed is increasing.

Turtle B is accelerating in the opposite direction of its velocity (North), so it will eventually change direction and start moving North when the acceleration overcomes the initial Southward velocity.

Turtle C is accelerating in the same direction as its velocity (North), so it's not changing direction, but its speed is increasing.

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Three turtles are walking in the park. The x-axis is positive towards the North direction. The velocities of the turtles are as follows:

Turtle A has a velocity of 2 cm/s to the North and an acceleration of 0.1 cm/s².

Turtle B has a velocity of 1 cm/s to the South and an acceleration of 0.2 cm/s².

Turtle C has a velocity of 3 cm/s to the North and an acceleration of 0.05 cm/s².

Rank the accelerations of the three turtles from smallest to largest based on their given accelerations.

Are the turtles going towards the North or South direction? Are they changing direction based on their accelerations?

The boat must have moved, despite not being seen to move, because its relative position to the dock has changed. This phenomenon is known as relative motion .

Everything is always in motion, but the way we perceive it depends on our frame of reference.

In this scenario, the dock was the frame of reference for the initial position of the boat. When the boat moved to the cove, its position relative to the dock changed, and the dock was no longer an appropriate frame of reference. The boat's motion is now relative to the cove instead.

It is important to note that relative motion depends on the chosen frame of reference. If we were to choose the boat as the frame of reference, then it would be the dock that appears to move, not the boat. This is because motion is always relative to a chosen frame of reference.

In conclusion, the boat must have moved because its position relative to the dock changed. The concept of relative motion reminds us that motion is always relative to a chosen frame of reference, and that the way we perceive motion depends on our chosen frame of reference.

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Explanation:

The answer is B: 1250. Hope this helps.

Answer:

Explanation:

length = 4.7 m

extension x = (0.11 /100) m + 4.7 m

= 4.7011 m

force = 360 N

spring constant k = ?

formula : F = kx

k = F/ x

k = 360 ÷ 4.7011

k= 76.578 Nm^-1

The spring constant of the wire of a steel wire 4.7 m long stretches 0.11 cm when it is subjected to a tension of 360 N is 76.57 N/m.

Simple, symmetrical motion i.e., SHM is a genuinely fascinating kind of agitation. It is continuously used in the objects' oscillatory motion. Most springs have SHM. The "spring constants" that are intrinsic to springs determine how stiff they are. A well-known law, Hooke's law, describes the SHM and provides a formula for the applied force using the spring constant.

Simple harmonic motions and Hooke's law are related to the definition of the spring constant. Therefore, we must first examine Hooke's rule before attempting to define the spring constant and comprehend how it operates.

Given:

The tension force, T = 360 N,

The length of the wire, L = 4.7 meters,

The elongation, l = 0.11 cm,

Calculate the spring constant by the following formula,

k = T / l

( l = x(0.11 /100) m + 4.7 m= 4.7011 m)

Here, k is the spring constant.

Substitute the values,

k = 360 / 4.7011

k = 76.57 N / m

Therefore, the spring constant of the wire of a steel wire 4.7 m long stretches 0.11 cm when it is subjected to a tension of 360 N is 76.57 N/m.

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(a) The amplitude of the wave is 0.2 m.

(b) The period of the wave is  4 s.

(c) The wavelength of the wave is 100 m.

(a) The amplitude of the wave is the maximum displacement of the wave.

amplitude of the wave = 0.2 m

(b) The period of the wave is the time taken for the wave to make one complete cycle.

period of the wave = 5.5 s - 1.5 s = 4 s

(c) The wavelength of the wave is calculated as follows;

λ = v / f

where;

f = 1/t = 1 / 4s = 0.25 Hz

λ = ( 25 m/s ) / 0.25 Hz

λ = 100 m

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Answer:

0.92 g/cm3

Explanation:

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

\(\frac{85}{92}\)

=

0.92 g/cm3

The electric field at the midpoint between the two charges is  determined as + 4.4 x 10⁸ N/C.

The electric field at the midpoint between the two charges is calculated as follows;

E = F/Q

E = kQ/r²

where;

The distance at midpoint between the charges is calculated as follows;

d = r/2 = 3 cm / 2 = 1.5 cm = 0.015 m

E = E₁  +  E₂

E = ( 28 x 10⁻⁶ x 9 x 10⁹ )/(0.015²) + (-17 x 10⁻⁶ x 9 x 10⁹ ) / ( 0.015² )

E = 1.12 x 10⁹  - 6.8 x 10⁸

E = 4.4 x 10⁸ N/C

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