6) water flowing through a pipe suddenly comes to a section of pipe where the pipe diameter decreases to 93% of its previous value. if the speed of the water in the larger section of the pipe was 36 m/s what is its speed in this smaller section? a) 49 m/s b) 42 m/s c) 31 m/s d) 27 m/s

Answer:

555

Explanation:

Answer: liquids take the shape of the container they are in, but have definite volume. like liquids the shape of a gas changes with the container. unlike liquids the volume of a gas changes depending on the container it is in

Explanation:

Answer:

liquids flow freely, they take the shape of the container they are in, but have a definite volume. Like liquids, the shape of a gas changes with the container. This is because the atoms in a gas move rapidly and freely to fill any available space. Unlike liquids, the volume of a gas changes depending on the container it

Explanation

To solve this problem, we'll use Charles's Law, which states that the volume of a gas is directly proportional to its temperature when the pressure and the amount of gas are kept constant. Mathematically, the law can be expressed as V1/T1 = V2/T2, where V1 and V2 are the initial and final volumes, and T1 and T2 are the initial and final temperatures.

In this case, we're given:
V1 = 100 mL (initial volume)
T1 = 200 K (initial temperature)
T2 = 300 K (final temperature)
We need to find V2 (final volume).

Applying Charles's Law, we get:
(100 mL) / (200 K) = V2 / (300 K)

Now, we can solve for V2:
V2 = (100 mL) * (300 K) / (200 K)
V2 = 30000 mL / 200 K
V2 = 150 mL

So, the new volume of the gas at 300 K is 150 mL. In summary, when the temperature of the gas increased from 200 K to 300 K, its volume increased from 100 mL to 150 mL due to the direct proportionality between the volume and temperature of a gas as stated by Charles's Law.

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In electrostatics, the electrical force between two charged objects is inversely related to the distance of separation between the two objects. Increasing the separation distance between objects decreases the force of attraction or repulsion between the objects.

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The east component of the car's displacement to the nearest tenth is 17.3 miles.

The given parameters:

The east component of the car's displacement to the nearest tenth is calculated as follows;

\(D_x = 20 \ miles \times cos(30)\\\\D_x = 17.3 \ miles\)

Thus, the east component of the car's displacement to the nearest tenth is 17.3 miles.

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a. when an object changes position relative to a reference point is motion.

In physics, motion is a relation of a body's position or orientation over time. Translation is characterized as movement along a line or a curve. Rotation is a motion that adjusts a body's orientation.

Motion is impeded or halted by the force of friction. When two components rub into one another, they create friction, which is a resistance to motion (the sled and the snow, for instance). Even air friction happens. An object can move or accelerate, slow down or descend, cease, or change direction as a result of force.

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Answer:

three symbiotic relationships

The great white shark has each of the three symbiotic relationships. It has a commensalistic relationship with the remora because the remora cleans the shark's body and the shark is unaffected. It has a Parasitic relationship with the germ ommatokoita elongata because the germ is benifited and the shark is harmed.

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As per the given values, and uncertainty of the speedometer the actual speed could be 61.33 km/h.

Uncertainty = 2.0 km/h

Measured value = 90 km/h

Calculating the Percent uncertainty -

= (Uncertainty / Measured value) x 100

= (2.0 / 90 ) x 100

= 2.22%

Now, assuming the speedometer has the same percent uncertainty at 60 km/h, this percent uncertainty can be used to determine the range of speeds.

Percent uncertainty = 2.22%

Measured value = 60 km/h

Calculating the range -

= (Percent uncertainty / 100) x Measured value

= (2.22% / 100) x 60

= 1.33

Calculating the Total speed -

= 60 + 1.33

= 61.33

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Complete Question:

If your speedometer has an uncertainty of 2.0 km/h at a speed of 90 km/h ,what is the percent uncertainty? (b) If it has the same percent uncertainty when it reads 60 km/h , what is the range of speeds you could be going?

Therefore, the refractive index of gasoline is 1.43.

The refractive index of gasoline can be calculated using the formula Refractive index (n) = Speed of light in vacuum (c) / Speed of light in the medium (v).


To find the refractive index of gasoline, we'll use the formula:
refractive index = speed of light in vacuum / speed of light in gasoline
Here, c = 3.00E+08 m/s and v = 2.10E+08 m/s.

n = (3.00E+08 m/s) / (2.10E+08 m/s) = 1.43

Substituting the given values:

refractive index = 3.00E+08 m/s / 2.10E+08 m/s

refractive index = 1.43
So, the refractive index of gasoline is 1.43.

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a) Mutual inductance = 0.108 H; Coupling coefficient = 0.482. b) - 4.95 V.


a) Mutual inductance, M between coil A and coil B can be given as:

M = k√(L_AL_B) here, k is the coupling coefficient, L_A and L_B are the inductances of the coil A and coil B respectively. Since 54% of flux produced by coil A links coil B,

So, K = 0.54

L_A = N_A Φ/I_AL_A

= 8120 × 0.02/6

= 27.07 mH

L_B = N_B Φ/I_BL_B

= 11842 × 0.078/6

= 154.63 mH

M = k√(LALB) = 0.482 × √(27.07 × 0.15463) = 0.108 H

b) The emf induced in coil B can be given as:-

ε = M (dI_B/dt)/L_B

ε = 0.108 × (-6/0.015) / 0.15463 = -4.95 V

Thus, the emf induced in coil B when the current is reversed in 0.015 seconds is -4.95 V.

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•How does the dancing activity help you in improving fitness skills?

Answer:

•Health benefits of dancing

improved condition of your heart and lungs. increased muscular strength, endurance and motor fitness. increased aerobic fitness. improved muscle tone and strength.

Explanation:

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the engery from the microwave is asorbed by the potato

Explanation:

Domestic wiring is house wiring were phase/live wire,neutral wire,earth wire is used that functions in giving the electricity to our home except in case of neutral wire

Answer:

inference

Explanation:

took the test hope I helped :p

Answer:

The angle between the reflected ray and the normal is the angle of reflection. And the angle between the refracted ray and the normal is the angle of refraction. When a light ray reflects off a surface, the angle of incidence is equal to the angle of reflection.

Explanation:

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The weight of the object is equal to 60.8 N when its mass is 16 kg on mars.

The weight of a body can be described as the force exerted on the object due to gravity. Weight can be specified as a vector quantity if the gravitational force is acted on the object.

The measurement unit for weight is similar to that of force newton (N). A body with a mass of 1 Kg on the surface of the Earth has a weight of 9.8 N, and about one-sixth on the Moon.

The mathematical formula to evaluate the weight of an object is mentioned below:

W = mg

Given, the mass of an object, m = 16 Kg

The acceleration due to gravity on the object on mars, g = 3.8 m/s²

The weight of an object on mars will be equal to:

W = 16 Kg × 3.8 m/s²

W = 60.8 N

Therefore, the weight of the object is 60.8 N.

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The normalized deflection is given as yEl/ wLvs.x/L = (1/24 EI) [x3 - 3L2x2 + 2L3x].

The deflection of the beam can be determined using the following formula:

y(x) = (W0 L3 sin phi/24 EI) [x3 - 3L2x2 + 2L3x], where

- EI is the flexural rigidity of the beam.

The normalized deflection is given as yEl/ wLvs.x/L. Therefore, substituting the given values of the load distribution and using the above formula,

the deflection of the beam is:y(x) = (W0 L3 sin phi/24 EI) [x3 - 3L2x2 + 2L3x]

Normalized deflection, yEl/ wLvs.x/L = (W0 L2 sin phi/24 EI) [x3 - 3L2x2 + 2L3x] / W0 L2/Lvs.x/LyEl/ wLvs.x/L = (1/24 EI) [x3 - 3L2x2 + 2L3x]

Therefore, the deflection of the beam is given as y(x) = (W0 L3 sin phi/24 EI) [x3 - 3L2x2 + 2L3x] and the normalized deflection is given as yEl/ wLvs.x/L = (1/24 EI) [x3 - 3L2x2 + 2L3x].

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Answer: To determine the change in speed of a car that accelerates at a rate of 4.5 m/s² for 4 seconds, we can use the following formula:

Δv = a * t

where:

Δv = change in speed

a = acceleration

t = time

Substituting the given values, we get:

Δv = 4.5 m/s² * 4 s

Δv = 18 m/s

Therefore, the change in speed for the car is 18 m/s.

This motion of the balloon is an example of buoyancy, which is the upward force exerted by a fluid on an object immersed in it.

When the balloon is neutrally buoyant, it means that the weight of the balloon and the weights attached to it is equal to the weight of the water displaced by the balloon.

If you push the balloon down to a greater depth and then release it, the balloon will rise back up to its original position.

This is because the balloon is still partially inflated and contains air, which is less dense than water. When you push the balloon down, the water pressure compresses the air in the balloon, causing it to become smaller in size.

When you release the balloon, the compressed air expands and pushes the balloon upwards towards the surface of the water.

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A wave with a frequency of 14 Hz and a wavelength of 3 meters is an example of a mechanical wave. This means that the wave requires a medium to travel through, such as air or water.

A wave with a frequency of 14 Hz and a wavelength of 3 meters is an example of a mechanical wave. This means that the wave requires a medium to travel through, such as air or water. The frequency of the wave refers to the number of complete cycles the wave makes in one second. In this case, the wave completes 14 cycles in one second. The wavelength of a wave refers to the distance between two corresponding points on the wave, such as two crests or two troughs. In this case, the distance between two crests or two troughs is 3 meters. The speed of the wave can be calculated by multiplying the frequency by the wavelength. Therefore, the speed of this wave can be calculated by multiplying 14 Hz by 3 meters, which gives a value of 42 meters per second. Understanding the frequency and wavelength of a wave is important in various fields, such as physics, engineering, and telecommunications. For example, in telecommunications, understanding the frequency and wavelength of electromagnetic waves is crucial for designing and optimizing wireless communication networks. In conclusion, a wave with a frequency of 14 Hz and a wavelength of 3 meters is a mechanical wave that requires a medium to travel through. The speed of the wave can be calculated by multiplying the frequency by the wavelength.

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88.5 m is the length of the pendulum. This an be solved using the concept of oscillation.

The process of any amount or measure repeatedly varying about its equilibrium position in time is referred to as oscillation. Another way to describe oscillation is as a periodic change in a substance's value between two values or around its midpoint.

Because oscillations are defined as a specific amount of movement of a solid body correlated to the distance travelled or the time required for it, oscillations and vibrations are not the same thing. The difference between the two is that vibration is the motion or change that oscillations induce in the body.

When small angles oscillate under the assumption that the supplied pendulum is oscillating, the oscillation time formula for a mathematical pendulum is:

T=2π × √(L/g)

or, L = (T/π)² × g

or, L = (290/π)² × 9.8

or, L = 88.5 meters

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Answer:

El equilibrio térmico se alcanzará a los 152ºC.

Explanation:

Dado que un ladrillo de 2kg que se encuentra a 200º c, se sumerge en 5 kg de agua a 32º, para determinar a qué temperatura se alcanza el equilibrio térmico se debe realizar el siguiente cálculo:

2+5 = 7

(200 x 5 + 32 x 2) / 7 = X

1064 / 7 = X

152 = X

Por lo tanto, el equilibrio térmico se alcanzará a los 152ºC.

Answer:

4.28 s

Explanation:

after two seconds (2 s) His friends is

d = 3.5 m/s x 2 s = 7 meter ahead.

in this state, a bicylist start from initial velocity vo = 0 m/s and accelerat 2.4 m/s²

then, when bicylist reach his friend

t friend = t bicyclist = t

d bicylist = d friend + d

-------

d friend = 3.5 . t

d bicylist = vo . t + ½ a t²

d friend + d = vo . t + ½ a t²

3.5 t + 7 = 0 . t + ½ . 2.4 . t²

3.5 t + 7 = 1.2 t²

0 = 1.2 t² - 3.5 t - 7

t = -1.363 and t = 4.28

take the positive one

Power supplies would help the family accomplish its goal is solar roof panels or possibly wind turbines.

To generate electricity using renewable resources, the family could consider using solar roof panels or possibly wind turbines. Gasoline engines, coal power plants, and nuclear power plants all rely on non-renewable energy sources, such as fossil fuels or nuclear reactions, and would not help the family accomplish its goal of using electricity generated by renewable resources. Solar roof panels use photovoltaic cells to convert sunlight into electricity. This is a clean, renewable source of energy that does not produce any greenhouse gases or other harmful emissions.

Wind turbines use the energy of the wind to generate electricity. This is also a clean, renewable source of energy that does not produce any harmful emissions. Both solar panels and wind turbines can be used to generate electricity for the family's new house, and they would help the family meet its goal of using electricity generated by renewable resources.

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Answer:

hi hello

Explanation:

idont know

A 45-kilogram bicyclist climbs a hill at a constant speed of 2. 5 meters per second by applying an average force of 85 newtons.

The bicyclist develops 212.5 Watts of power while climbing the hill at a constant speed of 2.5 meters per second.

Power is defined as the rate at which work is done or energy is transferred. The formula for power is:

Power = Work / Time

When an object is moving at a constant speed, the work done is equal to the force applied multiplied by the distance travelled. In this case, the work done by the bicyclist is equal to the force applied multiplied by the displacement (distance) travelled.

Given:

Mass of the bicyclist, m = 45 kg

Speed of the bicyclist, v = 2.5 m/s

Force applied by the bicyclist, F = 85 N

To determine the displacement, we can use the formula:

Displacement = Speed * Time

Since the speed is constant at 2.5 m/s, the displacement is equal to the product of the speed and the time.

Let's assume the time taken to climb the hill is T.

Displacement = 2.5 m/s * T

Now, let's calculate the work done by the bicyclist:

Work = Force * Displacement

Work = 85 N * (2.5 m/s * T)

The power developed by the bicyclist is given by the formula:

Power = Work / Time

Since the work is calculated as 85 N * (2.5 m/s * T) and the time is T, we can simplify the formula:

Power = 85 N * (2.5 m/s * T) / T

The T cancels out, leaving us with:

Power = 85 N * 2.5 m/s

Power = 212.5 Watts

Therefore, the bicyclist develops approximately 212.5 Watts of power while climbing the hill at a constant speed of 2.5 meters per second.

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Answer:

A trees food and air source would be deprived because of this. Trees need leaves to perform photosynthesis, so besides their roots soaking up water and nutrients, they wouldn't have any other form of food until those leaves grow back. If they don't and the locusts continue to eat up the tree, it will eventually starve and die.

Explanation:

Imagine the trees trunk and roots as your body and the leaves as your mouth/food source. God Forbid you catch a cold or some sickness. You probably won't have the appetite to eat. Despite that, you'll still have to. But, if you get so sick to the point that eating just makes you throw it up before your body can take in the nutrients and beneficial stuff, you will eventually get to the point where eating is nearly impossible. This will lead up to the sickness taking over your body, as there's no energy going in to help it fight it off, and you would die.

(Gah, sorry for the dark theme... didn't think it would turn like that lol)

Anyways, hope this helped!

Source(s) used: N/A

Answer:

400 m/s

Explanation:

If it is moving at a velocity of 80 m/s from rest, then after 5 s it would be at 400 m/s.

80 x 5 = 400

Answer:

\(a = 0.894\ m/s^2\)

Explanation:

Motion with Constant Acceleration

A body moves with constant acceleration when the speed changes uniformly in time. The equation used to find the final speed vf is

\(v_f=v_o+at\)

Where vo is the initial speed, a is the acceleration, and t is the time.

The cyclist has an initial speed of vo=10 miles/hour and ends up at vf=20 miles/hour in t=5 seconds.

Both speeds are given in miles/hour and we must convert it to m/s:

1 mile/hour = 0.44704 m/s

10 mile/hour = 4.47 m/s

20 mile/hour = 8.94 m/s

The acceleration is calculated by solving for a:

\(\displaystyle a=\frac{v_f-v_o}{t}\)

\(\displaystyle a=\frac{8.94-4.47}{5}\)

\(a = 0.894\ m/s^2\)