In the drawing, water flows from a wide section of a pipe to a narrow section. In which part of the pipe is the volume flow rate the greatest? (1 point) a. The wide section. b. The narrow section. c. The volume flow rate is the same in both sections of the pipe.

Explanation:

because of the sun's gravity

Answer: The planets in our solar system have to orbit the sun because of gravity and the heat because if we didn't have the sun we would all freeze to death or die from no oxygen and the sun helps the planets stay in orbit and gravity

Explanation: the basic reason why the planets revolve around, or orbit, the Sun, is that the gravity of the Sun keeps them in their orbits. Just as the Moon orbits the Earth because of the pull of Earth's gravity, the Earth orbits the Sun because of the pull of the Sun's gravity.

Answer:

36.04N

Explanation:

accelerating force: mass × acceleration

F=ma

m=212/10= 21.2kg

a=1.7m/s2

F=21.2×1.7

=36.04N

Answer:

c. Intensity

Explanation:

Wavelength is a distance (meters).

Speed is distance per time (meters / second).

Intensity is power per area (Watts / square meter).

Pitch is frequency (cycles / second).

The upward acceleration of the acrobat is 5.82 m/s².

Acceleration is the rate of change of the velocity of an item with appreciation to time. Accelerations are vector portions. The orientation of an item's acceleration is given by the orientation of the net pressure appearing on that object.

Calculation:-

downward force = 588 N

upward tension force = 588 N

Extra upward force = 349 N

acceleration = net force/total mass

                  = 349 / 60

                  = 5.82 m/s²

Acceleration is the charge at which velocity modifications with time, in terms of each speed and route. A factor or an object moving in a straight line is accelerated if it quickens or slows down. movement on a circle is extended despite the fact that the rate is consistent because the course is continually changing.

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Answer:

1.7 g/cm³

Explanation:

Given that:

Density of substance = 3.4 g/cm³

Relative density to another substance = 2

Density of second substance=?

Let density of second substance = x

Relative density = density of substance / density of second substance

Relative density = density of substance / x

2.0 = 3.4g/cm³ / x

2 * x = 3.4 g /cm³

x = 3.4 g/cm³ ÷ 2

x = 1.7 g/cm³

Answer:

C. it has a high density

Explanation:

i hope it will help

Answer:

Net force = 21.12 N

angle for the force α = 45°

Explanation:

In this problem, we will take the left as the negative x-axis, the right as the positive x-axis, and the upward direction as the positive y-axis.

The 20 N force to the left has an x component of -20 N, and y component of 0 N

The 35 N force to the right has a x component of 35 N, and a y component of 0 N

The 15 N upwards has an x component of 0 N, and a y component of 15 N

We resolve the forces into the x and y components.

for the x component Fx

Fx = -20 + 35 + 0 = 15 N

For the y component Fy

Fy = 0 + 0 + 15 = 15 N

Net force Fn = \(\sqrt{Fx^{2} + Fy^{2} }\)

\(Fn = \sqrt{(15)^{2} + (15^{2} ) }\)

Net force Fn = 21.21 N

for the angle,

\(tan\alpha = \frac{Fy}{Fx} = \frac{15}{15}\)

\(tan\alpha = 1\)

α = \(tan^{-1}\) 1

angle for force α = 45°

When a 9.0 V battery is connected to a bulb and 0.1 A of current flows through it, the resistance of the bulb is 90 ohms.

When a 9.0 V battery is connected to a bulb and 0.1 A of current flows through the bulb, we can calculate the resistance of the bulb using Ohm's Law. Ohm's Law states that the current flowing through a conductor is directly proportional to the voltage applied across it and inversely proportional to its resistance.

To find the resistance, we can rearrange Ohm's Law equation (V = IR) to solve for R, where V is the voltage, I is the current, and R is the resistance.

First, let's plug in the given values:

V = 9.0 V (voltage)
I = 0.1 A (current)

Now, we can rearrange the equation to solve for R:

R = V / I

Substituting the given values:

R = 9.0 V / 0.1 A

Dividing 9.0 V by 0.1 A, we get:

R = 90 ohms

Therefore, the resistance of the bulb is 90 ohms.

In summary, when a 9.0 V battery is connected to a bulb and 0.1 A of current flows through it, the resistance of the bulb is 90 ohms.

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Answer:

A

Explanation:

Newton third law of motion state that action and reaction are equal and opposite

Answer:

Always true

Explanation:

I got it right on the test.

True, the indirect method is used to determine total power in a parallel circuit when that power is determined from the total current, total resistance, and source voltage.

The indirect method of calculating power in a parallel circuit is used when it is not feasible to measure the current flowing through each individual resistor. It is found by multiplying the total resistance of the circuit (RT) by the square of the total current (IT), or by using the total voltage (VT) squared and dividing by the total resistance (RT).

The indirect method is used to determine total power in a parallel circuit when that power is determined from the total current, total resistance, and source voltage. The equation to use for this is Power = Voltage x Current. Therefore, the total power in a parallel circuit can be determined by multiplying the source voltage by the total current, divided by the total resistance.

The formula to calculate power is given by P = IV, where P stands for power, I stands for current, and V stands for voltage. Power is usually measured in watts (W), current is measured in amperes (A), and voltage is measured in volts (V).A parallel circuit consists of multiple paths, each containing a resistor.

The current through each resistor in a parallel circuit varies, and each resistor has its own voltage drop. The total resistance of a parallel circuit is less than the smallest resistance in the circuit.

The formula for calculating total power in a parallel circuit is

P = IT² × RT,

where IT is the total current and RT is the total resistance.

This formula assumes that the total voltage of the circuit is known. The formula can also be written as

P = VT²/RT,

where VT is the total voltage in the circuit.

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Answer: The whole of it was owned originally by the lord of the manor. He lived in the big house called the manor house. Attached to it were many acres of grassland and woodlands called the park. These were the "demesne lands" which were for the personal use of the lord of the manor.

The lord of the manor previously owned the entire property. He resided in the substantial home known as the manor house.

Thus, The park, which covered many acres of grassland and trees, was connected to it. These "demesne lands" belonged to the lord of the manor and were used exclusively for his exclusive purposes.

The word "manor" is derived from the Old French word "manoir," which means "dwelling place," but a manor isn't just any old house.

The homes and grounds of the nobility were referred to as manors back when people still had titles of nobility. expressing to someone that his home is a manor is the equivalent of expressing that it is so lavish and beautiful that it could have belonged to a lord.

Thus, The lord of the manor previously owned the entire property. He resided in the substantial home known as the manor house.

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Work required to stretch the rubber band by 0.10 meters will be negative, indicating that work needs to be done against the force applied to stretch the rubber band.

To determine how much the rubber band will stretch under a 20 N force and the work required to stretch it, we need to apply Hooke's Law. Hooke's Law states that the force applied to a spring or elastic material is directly proportional to the displacement it undergoes.

We can set up a proportion to find the stretch under Force 2:

(F1 / S1) = (F2 / S2)

Substituting the given values:

(24 N / 0.12 m) = (20 N / S2)

To find S2, we can rearrange the equation:

S2 = (20 N * 0.12 m) / 24 N

Simplifying:

S2 = 0.10 m

Therefore, a 20 N force will stretch the rubber band by 0.10 meters.

Now, let's calculate the work required to stretch the rubber band this far. The work (W) can be calculated using the formula:

W = (1/2) * k * (S2^2 - S1^2)

Where k is the spring constant.

However, we don't have the spring constant (k) given in the problem. So, we cannot determine the exact work without that information.

But, if we assume that the rubber band behaves as a linear spring and Hooke's Law applies, we can simplify the equation. Hooke's Law states that the force applied to a spring is equal to the spring constant (k) multiplied by the displacement (S).

F = k * S

Rearranging the equation:

S = F / k

Since the stretch (S) is directly proportional to the force (F), we can approximate the work required by assuming a constant k value:

W ≈ (1/2) * k * (S2^2 - S1^2)

W ≈ (1/2) * k * [(0.10 m)^2 - (0.12 m)^2]

Simplifying:

W ≈ (1/2) * k * (0.01 m^2 - 0.0144 m^2)

W ≈ (1/2) * k * (-0.0044 m^2)

Without the exact value of the spring constant, we cannot calculate the work precisely. However, we can still conclude that the work required to stretch the rubber band by 0.10 meters will be negative, indicating that work needs to be done against the force applied to stretch the rubber band.

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The block c will move in a circular path with a constant speed. The angular velocity of the system does not affect the linear velocity of the block c.

The linear velocity of a point on a rotating object is given by the product of its distance from the axis of rotation and the angular velocity. In this mechanism, the block c is located at the same distance from the pivot point a as the length of the bars. Therefore, regardless of the angular velocity, the linear velocity of the block c will remain constant.

The given mechanism consists of a bar attached to a pivot at point a, which rotates with a constant angular velocity, ω. The two bars in the mechanism have equal lengths, denoted as l, and the horizontal distance between pivot a and block c is also equal to l.

When the bar rotates, it imparts a circular motion to block c. However, the angular velocity of the system does not affect the linear velocity of the block c. This is because the linear velocity of a point on a rotating object is determined by its distance from the axis of rotation and the angular velocity.

In this case, the block c is located at the same distance from the pivot point a as the length of the bars (l). Therefore, the linear velocity of the block c will remain constant, regardless of the angular velocity of the system. This means that the block c will move in a circular path with a constant speed.

Overall, the main answer is that the block c will move in a circular path with a constant speed, regardless of the angular velocity of the system.

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Answer:

Yes

Explanation:

I just guess

Answer:

Its the first option

Melting point

Well we know that if we freeze something, it will turn into a solid right? If it was boiling point, it would be steam, so your answer would be Melting Point

Hope this helps you out!

Answer:

newton's inertia law

something goes one way while the other goes the opposite direction.

The energy consumption of an average U.S. home in 2017 was approximately 35,470,388 BTUs and 37,459,131.44 kJ.

In 2017, the average U.S. home used 10,399 kWh of energy.

To convert this energy consumption to BTUs (British Thermal Units), we can use the conversion factor that 1 kWh is equal to 3,412 BTUs

So, to find the energy consumption in BTUs, we multiply 10,399 kWh by 3,412 BTUs/kWh:
10,399 kWh * 3,412 BTUs/kWh = 35,470,388 BTU.

Therefore, the energy consumption of an average U.S. home in 2017 is approximately 35,470,388 BTUs.

To convert this energy consumption to kilojoules (kJ), we can use the conversion factor that 1 BTU is equal to 1.055 kJ

So, to find the energy consumption in kJ, we multip.ly 35,470,388 BTUs by 1.055 kJ/BTU:
35,470,388 BTUs * 1.055 kJ/BTU = 37,459,131.44 k

Therefore, the energy consumption of an average U.S. home in 2017 is approximately 37,459,131.44 kJ.

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Answer:

sequence

Explanation:

sequences are the way in which things are ordered, for example: 1, 2, 3, 4 is a sequence:)

Answer:

8 v

Explanation:

power = watts = v i

                 36   = v (4.5)

                   v = 8 v

Answer:

41.66 km/h

Explanation:

Calculate the distance of 1st travel :

v = d/t

25 km/h = d/1 h

d = 25 km/h × 1 h

Calculate the distance of 2nd travel :

v = d/t

50 km/h = d/2 h

d = 50 km/h × 2 h

Calculate the velocity of trip :

v = d/t

v = (25 + 100)/(1 + 2)

v = 125 km/3 h

So, my velocity for the trip is 41.66 km/h

We are asked to determine the force required to stop a car traveling at a speed of 28 m/s in 5.8s. To do that we will calculate the acceleration of the car first. The acceleration is determined using the following equation:

Where

Since we are calculating the force when the car stops this means that the final velocity is zero:

Now we solve for the acceleration "a", first by subtracting the initial velocity from both sides:

Now we divide by the time "t":

Now we substitute the values:

Solving the operations we get:

Now, we use Newton's second law to determine the force:

Where:

Substituting the value we get:

Solving the operations we get:

Therefore, the required force is -6148.59 Newtons. The negative sign means that the force is acting in the opposite direction of the movement of the car.

According to Newton's third law of motion, the reaction force exerted by the air on the balloon is equal in magnitude but opposite in direction to the action force exerted by the balloon on the air.

Given that the magnitude of the action force (F_balloon) is -3 N, the magnitude of the reaction force (F_air) will also be 3 N. The negative sign indicates that the forces are in opposite directions, but when considering magnitudes, we ignore the negative sign.

Therefore, the magnitude of the reaction force of the air pushing on the balloon is 3 N.

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Given data,

Mass,

Acceleration,

Spring constant,

Acceleration due to gravity,

Accelerating upward,

Comsider the formula for force.

Thus, the spring compression is 25.68 cm.

Sharing my notes.........

Explanation:

speed being a sclar quantitybisbthe rate at awhich an object covers distance and vlocity is a vector quantity it is direction aware .

Answer:

Wave having a length of 9 meters and a height of 6 meters.

Explanation:

Assuming that this is a sound wave or an electromagnetic wave, we know that those have a constant speed.

The speed of sound and speed of light are the same for any sound or electromagnetic wave respectively.

And we also have the equation:

v = λ*f

Where:

v = velocity

f = frequency

λ = wavelength

And because v is a constant, we can write:

f = v/λ

Now the wavelength is in the denominator, then the wave with the smaller wavelength will be the one with a larger frequency.

The option with the smallest wavelength is

Wave having a length of 9 meters and a height of 6 meters.

Notice that the height of the waves is also given, this is actually related to the intensity of the wave, so that information does not affect this particular question.

Answer:

A. Particles in air move in circles as the wave moves forward.

B. Particles in air move forward but not backward as the wave moves

forward.

C. Particles in air move up and down as the wave moves forward.

✔ D. Particles in air move forward and backward as the wave moves

forward.

Explanation:

The waves transfer energy from the source of the sound, e.g. a drum, to its surroundings. Your ear detects sound waves when vibrating air particles cause your ear drum to vibrate. The bigger the vibrations the louder the sound.

Answer:

Sound waves travel at 342 m/s through the air and faster through liquids and solids. The waves transfer energy from the source of the sound, e.g. a drum, to its surroundings. your ear detects sound waves when vibrating air particles cause your eardrum to vibrate. The bigger vibrations the louder the sound.

Explanation:

The generator power will be 59 kW. Power drop is the main factor for finding the generated power.

The maximum power input allowed to pass through a piece of equipment is known as the equipment's power rating.

Power drop = 5%

The relation of the frequency change with the power drop is;

\(\rm \frac{df}{dp} =5\%\\\\ \frac{f_{rated-f_1}}{P_{rated}-P_1}=0.05\\\\ \frac{f_{rated-60}}{100-61}=0.05\\\\ f_{rated}=61.95\)

For the grid frequency, 59.9 Hz

\(\rm \frac{f_{rated-f_2}}{P_{rated}-P_2}=0.05\)

\(\rm \frac{61.95-f_2}}{100-P_2} =0.05\\\\ 100-P_2 =20(61.95-59.9)\\\\P_2=100-41 \\\\ P_2=59 \ kW\)

Hence, the generator power will be 59 kW.

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Answer:

Earth because of greater gravity

The intensity of the beam is 1.21*10^7  W/m^2 and the intensity is define as number of photons per unit time.

Radiation beam is energy in the form of waves of particles. There are two forms of radiation which are  non-ionizing and ionizing.

Non-ionizing radiation has less energy than ionizing radiation; it does not possess enough energy to produce ions.

Ionizing radiation is capable of knocking electrons out of their orbits around atoms, upsetting the electron/proton balance and giving the atom a positive charge.

Alpha radiation consists of alpha particles that are made up of two protons and two neutrons each and that carry a double positive charge. Due to their relatively large mass and charge, they have an extremely limited ability to penetrate matter.

We know that,

Iabsorbed=P/A ------(1)

where P is the power and A is the area.

P= E/t-------(2)

using (2) and (1)

Iabsorbed=E/tA-----(3)

Now area,

A=πr^2 = 1.19*10^-5 m^2

putting in (3), we get

Iabsorbed = 1.09*10^7 W/m^2

Given only 90% of the beam is absorbed So,

I/100=1.19*10^-5/90

Now the intensity is,

I=1.19*10^-5*100/90

I=1.21*10^7 W/m^2.

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