9. A 30 cm ruler is found to have a center of mass of 15.6 cm. The percent error of the center of mass is _____, if the ruler is assumed to have uniform mass.

Answer:

The correct answer is A. A government that wants to increase its GDP would most likely increase the money supply to make it easier to borrow money.

Explanation:

If the government wanted to increase its GDP, the most appropriate way to do so would be to increase the money supply both through issuance and through a reduction in bank reserve requirements, thereby increasing the circulating money in the hands of society.

This, in turn, would make citizens reinvest that money, increasing economic production and, therefore, the national GDP.

Answer: A. Increase the money supply to make it easier to borrow money

Explanation: I just took the test on Ap ex

Answer:

anlatamadım herkeze ben sorulara bakamiyorum cumku analmaiyirum yardim edin

bu sorunu nasil cozebilirim

lutfsn...

When the pressure (100 N) and weight (40 kg) are entered into the appropriate fields, the gravity is 2 m/s².

Force and acceleration are linked by the equation F=ma. The characters "F," "m," and "a" stand for acceleration, mass, and force, respectively. Force is the ability of one object to exert a pull or force on another. Acceleration is the rate at which an object's speed changes.

Speed increase is the pace of progress of speed. Acceleration typically indicates a change in speed, but not always. Because its velocity is changing in the opposite direction, even if an object moves in a circle at the same speed, it will still accelerate.

Learn more about acceleration:

brainly.com/question/460763

#SPJ1

A rectangular container measuring 19 cm x 51 cm x 62 cm is filled with water. The mass of this volume of water in kilograms is  60.4 kilograms (kg).

To calculate the mass of water in the rectangular container, we need to multiply the volume of water by the density of water.

1. Volume of water:

The volume of the rectangular container is given as:

Length (L) = 19 cm

Width (W) = 51 cm

Height (H) = 62 cm

The volume of water (V) is calculated as:

V = L × W × H

Converting the dimensions to meters:

L = 19 cm = 0.19 m

W = 51 cm = 0.51 m

H = 62 cm = 0.62 m

V = 0.19 m × 0.51 m × 0.62 m

V ≈ 0.0604 cubic meters (\(m^3\))

2. Density of water:

The density of water (ρ) is approximately 1000 kilograms per cubic meter (kg/\(m^3\)).

3. Mass of water:

Mass (m) = Volume × Density

m = 0.0604 m^3 × 1000 kg/\(m^3\)

m = 60.4 kilograms (kg)

Therefore, the mass of the volume of water in the rectangular container is approximately 60.4 kilograms (kg).

It's important to note that the density of water can vary slightly depending on temperature and impurities, but for most practical purposes, a density of 1000 kg/\(m^3\)is commonly used.

For more such information on: volume

https://brainly.com/question/27710307

#SPJ8

Answer:

microsecond = 1 × 10-6 seconds

1 second = 1 × 100 seconds

1 microsecond = (1 / 1) × 10-6 × 10-0 seconds

1 microsecond = (1) × 10-6-0 seconds

1 microsecond = (1) × 10-6 seconds

1 microsecond = 1 × 1.0E-6 seconds

1 microsecond = 1.0E-6 seconds,just do like it

Answer:

6.3 x \(10^{-3}\)

Explanation:

1 millisecond = 1000 microseconds

0.0063 millisecond = 6.3 microseconds

Answer:

About 1 meter

Explanation:

Base on your image, when the period is 2 (horizontal variable), the length of the pendulum is about 1 meter.

Answer:

Gold = 19.3g/cm³

Explanation:

Given the following data;

Mass = 38.6g

Volume = 2cm³

To find the density;

Density can be defined as mass all over the volume of an object.

Simply stated, density is mass per unit volume of an object.

Mathematically, density is given by the equation;

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

Substituting into the equation, we have;

\(Density = \frac{38.6}{2}\)

Density = 19.3g/cm³

Therefore, from the table the material is Gold.

Gold is a chemical element and it is the element 79 on the periodic table. Thus, it has an atomic number of 79. The chemical symbol for Gold is Au, it is chemically classified as a transition metal and as a solid at room temperature.

Generally, the chemical element Gold is known to have the following physical properties;

I. Malleable.

II. Ductile.

III. A good conductor of electricity and heat.

Also, it is a non-toxic chemical element with a beautiful lustrous sheen.

Answer:

h = 0.288m

Explanation:

Assume

\(v_1\) = Speed of Sue

\(v_2\) = Speed of Chris immediately after the push

Sue's KE = \(\frac{1}{2} mv_1\ ^2 = 26 v_1 \ ^2\)

now she swings this is converted into gravitation at PE of

mg n = 52 × 9.8 × 0.65  

= 331.24

\(26v_{1}\ ^2\) = 331.24

So, \(v_1 = 3.569\)

They started at rest by conservation of momentum in case of push off the magnitude of sue momentum and it is equal to the magnitude of Chris momentum in the opposite or inverse direction

\(m_1v_1 = m_2v_2\)

\(52 \times 3.569 = 78 \times v_2\)

\(v_2 = 2.380\)

Chris kt = \(\frac{1}{2} \times 78 \times 2.380^2\)

= 220.827

220.827 = mgh

So, h = 0.288m

T

Answer:

the velocity is a second final to initial velocity of 39

Answer:

\(625\ \text{cm}^2\)

\(14.1\ \text{cm}\)

Explanation:

\(F_1\) = Force applied to master piston = 200 N

\(F_2\) = Force applied to slave piston = 5000 N

\(A_1\) = Area of master piston = \(25\ \text{cm}^2\)

\(A_2\) = Area of slave piston

r = Radius of slave piston

From Pascal's law we have

\(\dfrac{F_1}{A_1}=\dfrac{F_2}{A_2}\\\Rightarrow A_2=\dfrac{F_2}{F_1}A_1\\\Rightarrow A_2=\dfrac{5000}{200}\times 25\\\Rightarrow A_2=625\ \text{cm}^2\)

The area of the slave piston is \(625\ \text{cm}^2\)

Area of the slave piston is given by

\(A_2=\pi r^2\\\Rightarrow r=\sqrt{\dfrac{A_2}{\pi}}\\\Rightarrow r=\sqrt{\dfrac{625}{\pi}}\\\Rightarrow r=14.1\ \text{cm}\)

The radius of the slave piston is \(14.1\ \text{cm}\).

Answer:

The higher the energy, the shorter the wavelength.

Explanation:

The centripetal acceleration of a point 0.100 m from the center when the wheel is moving at an angular speed of 12.0 rad/s is 1.44 m/s^2.

To find the centripetal acceleration of a point on the grinding wheel, we can use the formula:

a = rω^2

Where:

a is the centripetal acceleration,

r is the distance from the center of the wheel to the point, and

ω (omega) is the angular speed.

Given:

Radius of the grinding wheel, r = 0.150 m

Angular speed, ω = 12.0 rad/s

Distance from the center, r' = 0.100 m

First, we calculate the centripetal acceleration at the given angular speed:

a = (0.150 m)(12.0 rad/s)^2 = 21.6 m/s^2

Now, to find the centripetal acceleration at a distance of 0.100 m from the center, we substitute the new radius into the formula:

a' = (0.100 m)(12.0 rad/s)^2 = 1.44 m/s^2

for such more questions on acceleration

https://brainly.com/question/460763

#SPJ8

No, the youngster is mistaken. The leaf won't float to the edge of the pond due to the stone's waves.

When a stone is put into a body of water, it creates waves that change in a stunning pattern, radiating outward from a centre that eventually goes still. The growing ring is referred to as a wave packet.

A circle-shaped pattern of ripples is created on the water's surface when a stone is tossed into stillness. The particles vibrate due to the stone's kinetic energy. The particles in the subsequent layers receive the energy.

To know more about waves visit:-

https://brainly.com/question/25954805

#SPJ9

Acceleration describes the speed and direction changes in velocity over time. Acceleration refers to the change in speed or direction of an item or point travelling straight forward. Due to the constant change in direction, motion on a circle accelerates even while the speed is constant.

The rate at which an object's velocity changes in relation to time is known as acceleration. The vector quantity of accelerations. The direction of the net force that is acting on an object determines its acceleration.

The formula a = v/t denotes acceleration (a), which is the product of the change in velocity (v) and the change in time (t). Using metres per second squared (m/s²), you can gauge how quickly velocity varies.

Acceleration due to gravity on earth = 9.8 m/s²

Therefore, the rate at which the ball will fall on the Katar is 9.8m/s²

Gravitational acceleration is the acceleration that an object experiences as a result of the gravitational field. It has the SI unit m/s². It is a vector quantity since it has both magnitude and direction. g is a unit used to measure gravitational acceleration. 9.8 m/s² is the standard value of g at sea level on the surface of the earth.

To know more about acceleration towards the ground, click on the link below:

https://brainly.com/question/3045264

#SPJ9

Answer:

increase

Explanation:

The potential energy of the object at a certain height converts to kinetic energy as the object falls.  Objects in free fall are accelerating, so the velocity is increasing every second that the object is falling.  KE = 1/2mv², so the greater the v, the greater the KE.

The statement that best explains why this helps protect orange trees and fruit from freezing is that the transfer of thermal energy in water as it freezes protects the orange trees by transferring heat energy from the orange trees and fruit. That is option A.

Freezing is the phase transition that involves the change of a liquid substance into a solid form as it's temperature becomes lower.

During winter seasons which is a weather that can freez the orange fruits, the orange grower sprays water on their orange trees to prevent it from freezing.

The mechanism that prevents the orange from freezing is the transfer of the thermal energy between the water and the orange fruits.

Learn more about thermal energy here:

https://brainly.com/question/19666326

#SPJ1

Answer: not true

Explanation: mass < weight

Answer:

To increase the conductivity of the material.

Explanation:

Generally , the group 4 elements are non conductor but in certain conditions, such as doping or the increase in temperature, they becomes conductor.

The doping is the process of mixing of pentavalent or the trivalent material into tetra valent material in the very small amount, so that the material becomes conductor.

In making a diode we need two types of the materials, n type semiconductor and p type semi conductor.

When the trivalent impurity is added in the tetra valent element, the semiconductor becomes n type because an electron is left for the conduction.

When the pentavalent impurity is added in the tetra valent element, the semiconductor becomes p type because a hole is left for the conduction.

Answer:

regenerating arms....

When acceleration is equal to zero average velocity and the instantaneous velocity vectors are identical.

Types of velocity

Velocity is defined as the rate of displacement of an object with respect to time. It is measured in meter/ seconds and is a vector quantity.

Acceleration is defined as the rate at which velocity changes with time.

There are two types of velocity which includes:

Average velocity: This is the average rate of change of position of particles with respect to time over an interval.

Instantaneous velocity: This is defined as the specific rate of change of position with respect to time at a particular point.

The situation that will make the average velocity and the instantaneous velocity vectors to be equal or identical is when acceleration is equal to zero.

Answer:

Amplitud (dinámica)

Explanation:

La amplitud de una onda de sonido determina su volumen relativo. En música, el volumen de una nota se denomina nivel dinámico.

a)The capacitive reactance is 680 ohms.

\(X_{c}=1/2\pi fC\)

\(X_{c}=1/2\pi *30*7.8*10^{-6}\)

\(X_{c}=680\\\)

b)The rms current is 0.10 amperes.

\(I_{rms}=V_{rms}/X_{c}\)

\(I_{rms}=71/680\)

\(I_{rms}=0.10A\)

c)The maximum current in the circuit is 0.147 amperes.

\(I_{max}=\sqrt{2} *I_{rms}\)

\(I_{max}=\sqrt{2} *0.10\)

\(I_{max}=0.147A\)

What is capacitive reactance?

The measure of the opposition to alternating current by the capacitor is called Capacitive Reactance. The unit of Capacitive Reactance is Ohms-like resistance. The symbol of Capacitive Reactance is XC

What is the capacitive reactance formula?

Xc = 1/2πfc

XC is the capacitive reactance, π is a constant with the value of 3.14, f is the frequency, and c is the capacitance.

To know more about capacitive reactance:

https://brainly.com/question/14579743

#SPJ1

If a frictionless plane is 10.0 m long and inclined at 36.0°.

We can use conservation of energy to find the distance that the first sled travels up the incline. The potential energy of the sled at the bottom of the incline is zero, and its kinetic energy is:

KE = (1/2)mv^2

where m is the mass of the sled and v is its speed. At the point where the sled stops, all of its kinetic energy has been converted into potential energy, so we can write:

mgh = (1/2)mv^2

where h is the height that the sled has traveled up the incline. Solving for h, we get:

h = (v^2)/(2g)

where g is the acceleration due to gravity. Using the given values, we have:

h = (6.00 m/s)^2 / (2 * 9.81 m/s^2) = 1.83 m

So the first sled travels a distance of 10.0 m - 1.83 m = 8.17 m up the incline.

b. To find the initial speed of the second sled, we can use conservation of energy again. At the top of the incline, the sled has potential energy:

PE = mgh

where h is the height of the incline. As the sled slides down the incline, its potential energy is converted into kinetic energy:

KE = (1/2)mv^2

where v is the speed of the sled at the bottom of the incline. We can equate these two expressions and solve for v:

mgh = (1/2)mv^2

v = sqrt(2gh)

Using the given values, we have:

v = sqrt(2 * 9.81 m/s^2 * 10.0 m * sin(36.0°)) = 12.2 m/s

So the second sled must be released from the top of the incline with an initial speed of 12.2 m/s.

The position of the sled as a function of time is given by:

y = -0.5gt^2 + Vi*t + h

where y is the vertical position of the sled, t is the time, Vi is the initial speed of the sled, and h is the height of the incline. At the bottom of the incline, y = 0, so we can solve for the time it takes for the second sled to reach the bottom:

0 = -0.5gt^2 + Vi*t + h

t = (Vi ± sqrt(Vi^2 - 2gh)) / g

Since we want both sleds to reach the bottom at the same time, we set the time for the first sled to slide down the incline equal to this expression for t and solve for Vi:

t = sqrt(2h/g) = sqrt(2 * 1.83 m / 9.81 m/s^2) = 0.619 s

0 = -0.5gt^2 + Vi*t + h

Vi = (h - 0.5gt^2) / t

Vi = (1.83 m - 0.5 * 9.81 m/s^2 * (0.619 s)^2) / 0.619 s

Vi = 5.68 m/s

So the initial speed of the second sled is about  5.68 m/s

Learn more about initial speed here:https://brainly.com/question/24493758

#SPJ1

The near point of a human eye is about a distance of 25 cm.

The closest distance that an object may be viewed clearly without straining is known as the near point of the eye.

This distance (the shortest at which a distinct image may be seen) is 25 cm for a typical human eye.

The closest point within the accommodation range of the eye at which an object may be positioned while still forming a focused picture on the retina is also referred to as the near point.

In order to focus on an item at the average near point distance, a person with hyperopia must have a near point that is further away than the typical near point for someone of their age.

To learn more about near point, click:

https://brainly.com/question/32579304

#SPJ1

In situations where wind speeds are over the turbine's design limit, controlling the blade pitch can help prevent overload.

The region of the circle the blades' sweeping motion through the air creates is referred to as the swept area.

The area that the propeller covers is equal to the sum of the blades' average surfaces times the number of blades.

In situations where wind speeds are over the turbine's design limit, controlling the blade pitch can help prevent overload. Once the load torque has been maintained, pitch control is utilised to adjust the rotor speed [16]. The Morten et al.

Blade velocity coefficient, also known as the coefficient of velocity or friction factor represented by K, is the ratio of vr2 to vr1 when there is friction, where vr2 will be less than vr1 when there is friction.

To learn more about blades refer to:

https://brainly.com/question/25952415

#SPJ1

Answer:

a. i. 0.044 ft³/s ii. 2.75 lb/s

b. 62.3 s

c. 32 ft/s

Explanation:

(a) the volume and mass flow rates of water through the hose

i. The volume flow rate

The volume flow rate, Q = Av where A = cross-sectional area of nozzle at inlet = πd²/4 where r = diameter of nozzle at inlet = 1 inch = 1/12 ft and v = average velocity in the nozzle = 8 ft/s.

So, Q = Av

= πd²v/4

= π(1/12 ft)² × 8 ft/s/4

= 0.175/4 ft³/s

= 0.044 ft³/s

ii. The mass flow rate

The mass flow rate, M = ρQ where ρ = density of water = 62.4 lb/ft³ and Q = volume flow rate = 0.044 ft³/s

So, M = ρQ

= 62.4 lb/ft³ × 0.044 ft³/s

=  2.745 lb/s

≅ 2.75 lb/s

(b) how long it will take to fill the bucket with water

Since we have 20 gallons = 20 × 1 gallon, we convert if to cubic feet. So, 20 gallons = 20 × 1 gallon = 20 × 0.137 ft³ = 2.74 ft³.

Since V = Qt where V = volume, Q = volume flow rate and t = time, making t subject of the formula, we have

t = V/Q

= 2.74 ft³/0.044 ft³/s

= 62.27 s

≅ 62.3 s

(c) the average velocity of water at the nozzle exit

Using the continuity equation,

A₁v₁ = A₂v₂ where A₁ = cross-sectional area of nozzle at inlet = πd₁²/4 where d₁ = diameter of nozzle at inlet = 1 inch = 1/12 ft, v₁ = average velocity in the nozzle = 8 ft/s, A₂ = cross-sectional area of nozzle at inlet = πd₂²/4 where d₂ = diameter of nozzle at inlet = 0.5 inch = 0.5/12 ft, v₂ = average velocity at exit nozzle.

So, A₁v₁ = A₂v₂

(πd₁²/4)v₁ = (πd₂²/4)v₂

πd₁²v₁/4 = πd₂²v₂/4

Dividing through by π/4. we have

So, d₁²v₁ = d₂²v₂

making v₂ subject of the formula, we have

v₂ = d₁²v₁/d₂²

v₂ = (d₁²/d₂²)v₁

v₂ = (d₁/d₂)²v₁

substituting the values of the variables into the equation, we have

v₂ = (1/0.5)² × 8 ft/s

v₂ = (2)² × 8 ft/s

v₂ = 4 × 8 ft/s

v₂ = 32 ft/s

The electric conductivity of the wire is 0.05 siemens per meter (S/m).

To calculate the speed of sound in the air, you can use the formula:

Speed of sound = Distance / Time

In this case, the distance is 10 meters and the time is 0.05 seconds:

Speed of sound = 10 m / 0.05 s = 200 m/s

Therefore, the speed of sound in the air is 200 meters per second (m/s).

To calculate the electric current flowing through a wire, you can use Ohm's Law:

Current = Voltage / Resistance

In this case, the voltage is 50 volts and the resistance is 10 ohms:

Current = 50 V / 10 Ω = 5 A

Therefore, the electric current flowing through the wire is 5 amperes (A).

To calculate the electric conductivity of the wire, you can use the formula:

Electric conductivity = 1 / Resistance * (Cross-sectional area / Length)

In this case, the resistance is 10 ohms, the length is 10 meters, and the cross-sectional area is 0.5 square meters:

Electric conductivity = 1 / 10 Ω * (0.5 m^2 / 10 m) = 0.05 S/m

Therefore, the electric conductivity of the wire is 0.05 siemens per meter (S/m).

For more such questions on Electrical conductivity

https://brainly.com/question/1090636

#SPJ11

The potential difference between points A and B in the circuit is 12 V.

To find the potential difference between points A and B in the given circuit, determine the total voltage across the circuit.

From the information provided, there are four resistors labeled as 12 Ω each. Assuming these resistors are connected in series, the total resistance in the circuit is 12 Ω + 12 Ω + 12 Ω + 12 Ω = 48 Ω.

Next, determine the current flowing through the circuit. The voltage is given as 24 V.

Using Ohm's Law (V = IR), calculate the current:

I = V / R

I = 24 V / 48 Ω

I = 0.5 A

Since the resistors are connected in series, the current remains the same throughout the circuit.

Finally, to find the potential difference between points A and B, multiply the current by the resistance between those points:

V_AB = I × R_AB

V_AB = 0.5 A * 24 Ω

V_AB = 12 V

Therefore, the potential difference between points A and B in the circuit is 12 V.

Find out more on potential difference here: https://brainly.com/question/24142403

#SPJ1