draw and label the diagram and label it and describe the vaccum​

Answer:

3

Explanation:

You will do 60÷20=30

This is the answer and please follow me

Answer:

you have to match the letters in the picture to the list of energy types

If the velocity-time equation for a golf cart is v = (1 m/s) + (-0.5 m/s)t , then the initial velocity of the cart would be 1 m / s and the acceleration of the cart would be - 0.5 m / s² .

The rate of change of the velocity with respect to time is known as the acceleration of the object. Generally, the unit of acceleration is considered as meter/seconds².

As given in the problem the velocity-time equation for a golf cart is

v = (1 m/s) + (-0.5 m/s)t ,

The initial velocity of the cart at t = 0  would be 1 m / s.

By differentiating the given equation of the velocity,

The acceleration of the cart would be -0.5 m / s.

Thus, the initial velocity would be 1 m / s and the acceleration would be  -0.5 m / s.

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Answer:

170m

Explanation:

\(v_{f}=v_{i}+at\)

\(v_{f}=2+3\cdot10\)

\(v_{f}=32\ \frac{m}{s}\)

The final velocity is 32 meters per second

\(v_{f}^{2}=v_{i}^{2}+2ad\)

\(d=\frac{\left(v_{f}^{2}-v_{i}^{2}\right)}{2a}\)

\(d=170m\)

Therefore, the total distance travelled is 170m

The pitch of a sound stimulus is related to the physical characteristic of frequency.

Frequency refers to the number of vibrations or cycles per second that a sound wave produces. It is measured in hertz (Hz). Higher frequencies correspond to higher-pitched sounds, while lower frequencies correspond to lower-pitched sounds.

For example, a high-frequency sound wave with many cycles per second produces a high-pitched sound, such as a whistle or a bird chirp. In contrast, a low-frequency sound wave with fewer cycles per second produces a low-pitched sound, such as a deep voice or a bass guitar note.

Our perception of pitch is directly influenced by the frequency of the sound waves reaching our ears. Higher-frequency sound waves stimulate the sensory receptors in our ears more frequently, creating the perception of a higher-pitched sound, while lower-frequency sound waves stimulate the receptors less frequently, leading to the perception of a lower-pitched sound.

Therefore, the physical characteristic of frequency determines the pitch of a sound stimulus.

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It will take approximately 18.57 seconds for the boat to cross the river.

To solve this problem, we can use vector addition to determine the velocity of the boat relative to the river bank. Let's break it down into two components: the velocity of the boat in the north direction (upstream) and the velocity of the river current in the west direction. a) Velocity of the boat relative to the river bank:

The velocity of the boat in the north direction is given as 15 m/s. The velocity of the river current in the west direction is 6 m/s. To find the velocity of the boat relative to the river bank, we need to find the resultant vector of these two velocities.

Using vector addition, we can calculate the resultant velocity (V_resultant) as follows:

V_resultant = √((V_boat)^2 + (V_river)^2)

where V_boat is the velocity of the boat in the north direction (15 m/s) and V_river is the velocity of the river current in the west direction (6 m/s).

Plugging in the values:

V_resultant = √((15 m/s)^2 + (6 m/s)^2)

V_resultant = √(225 m^2/s^2 + 36 m^2/s^2)

V_resultant = √(261 m^2/s^2)

V_resultant ≈ 16.14 m/s

Therefore, the velocity of the boat relative to the river bank is approximately 16.14 m/s.

b) Time taken to cross the river:

To find the time taken to cross the river, we can use the equation:

Time = Distance / Velocity

The distance across the river is given as 300 m, and the velocity of the boat relative to the river bank is approximately 16.14 m/s.

Plugging in the values:

Time = 300 m / 16.14 m/s

Time ≈ 18.57 s

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Answer:

20m/s^2

Explanation:

F=ma, therefore 10N = 0.5kg * a. Solve for a.

The kinetic energy of the book be as it hits the floor is - 29.4  kg(m²/s²)   and the velocity of the book as it hits the floor is   -5.422 m/s .

From the question we can get,

mass (m) = 2 kg

height (h) = 1.5 m

we know ,

P.E = mgh

∴ g =9.8 m/s

∴ P.E = 2 × 9.8 × 1.5

∴ P.E = 29.4 kg(m²/s²)

According to the law of conservation of energy, energy cannot be destroyed but can only be converted from one form to another. Because KE and PE are interconvertible, they do not violate the law of conservation of energy.

∴Total Energy = PE + KE

Because the total energy of the system will remain constant, total energy=0

∴ PE+KE=0

It means that

∴PE=-KE

Hence, the kinetic energy is - 29.4   kg(m²/s²)

We know,

K.E = 1/2 (mv² )

∴ -29.4  = 1/2 ( 2 × v²)

∴ -29.4 = v²

∴ v = √-29.4

∴ v =  -5.422 m/s

Hence velocity of book is  -5.422 m/s.

An object's kinetic energy is the energy it has as a result of its motion. It is defined as the amount of work required to accelerate a body of a given mass from rest to a certain velocity. The body retains its kinetic energy after gaining it during acceleration until its speed changes.

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The velocity at the end of 4.5 seconds is 32.4 m/s.

To find the velocity of a car that accelerates at a rate of 7.2 m/s² for 4.5 seconds, starting from rest, we can use the formula:

v = u + at

where v is the final velocity, u is the initial velocity (0 m/s since the car is starting from rest), a is the acceleration (7.2 m/s²), and t is the time (4.5 seconds).

Step 1: Identify the known values.
u = 0 m/s (starting from rest)
a = 7.2 m/s² (acceleration)
t = 4.5 seconds (time)

Step 2: Plug the known values into the formula.
v = 0 m/s + (7.2 m/s² * 4.5 seconds)

Step 3: Perform the calculation.
v = 0 m/s + (32.4 m/s)

Step 4: Simplify the result.
v = 32.4 m/s

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weight of sweets and candy is 1.6kg

It is given that a total weight of 2 kg is allowed by the postal service

The weight of cookies is given to be 400gm

we know that 1kg =1000gm

400gm= 400/1000 gm =0.4kg

Therefore weight of sweets and candy that Amy can send=

total weight- weight of cookies

=2kg - 0.4kg

=1.6kg

Therefore, weight of sweets and candy is 1.6kg

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Answer:

30.95 cm

Explanation:

The focal length f, the object distance do, and the image distance di are related with the following equation:

So, replacing the values, we get:

Then, solving for di, we get:

Therefore, the image distance is 30.95 cm

Explanation:

2. Power is defined as the rate of doing work. Mathematically, it can be given by :

\(P=\dfrac{W}{t}\)

Where

W is work done or energy

t is the time taken

3. The formula of potential energy can be given by :

\(P=mgh\)

Where

m is the mass of the object

g is the acceleration due to gravity

h is height

Hence, this is the required solution.

Answer:

d = 79 m , d = -43 m

Explanation:

This in an exercise of movement in one dimension, the displacement is a vector and the distance is the scalar

Let's calculate the distance

          d = 35 + 18 +26

          d = 79 m

Displacement which is a vector

          d = -35 +18 - 26

          d = -43 m

thebold indicate vector.  The negative sign indicates that the movement is to the left

Answer:

the deficiency is the target audience of the most important and important the target audience of this advertisement is to provide the target of the best of all time and k to detect and k a solution please send emote and

The Lyman series is in the ultraviolet region, while the Paschen, Brackett, and Pfund series are all in the infrared region of the electromagnetic spectrum.

These series represent the different sets of spectral lines corresponding to electron transitions in the hydrogen atom.

1. Lyman series: This series corresponds to electron transitions from higher energy levels to the first energy level (n=1). The lines in the Lyman series are found in the ultraviolet (UV) region of the electromagnetic spectrum.

2. Paschen series: This series corresponds to electron transitions from higher energy levels to the third energy level (n=3). The lines in the Paschen series are found in the infrared (IR) region of the electromagnetic spectrum.

3. Brackett series: This series corresponds to electron transitions from higher energy levels to the fourth energy level (n=4). The lines in the Brackett series are also found in the infrared (IR) region of the electromagnetic spectrum.

4. Pfund series: This series corresponds to electron transitions from higher energy levels to the fifth energy level (n=5). The lines in the Pfund series are found in the infrared (IR) region of the electromagnetic spectrum as well.

In summary, the Lyman series is in the ultraviolet region, while the Paschen, Brackett, and Pfund series are all in the infrared region of the electromagnetic spectrum.

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the terminal voltage across the battery in the circuit at the right is 3.92 volts.

The terminal voltage across the battery in the circuit at the right can be found using the formula:
        Terminal voltage = emf - (internal resistance x current)
Since there are two cells in the circuit, the total emf is 2.2 volts x 2 = 4.4 volts.
The current flowing through the circuit can be found using Ohm's law:
        terminal = voltage / resistance
The total resistance in the circuit is the sum of the internal resistance of each cell and the external resistance (not given in the question). Let's assume the external resistance is 2 ohms. Then the total resistance is:
        Total resistance = 2.2 ohms + 0.6 ohms + 2 ohms = 4.8 ohms
The current flowing through the circuit is:
        Current = voltage / resistance = 4.4 volts / 4.8 ohms = 0.917 amps
Finally, the terminal voltage across the battery is:
        Terminal voltage = emf - (internal resistance x current) = 4.4 volts - (0.6 ohms x 0.917 amps) = 3.92 volts

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Answer:

If garlic repels fleas, then a dog that is given garlic every day will not get fleas.

Explanation:

Hope this helps! If it doesn't and you need something else let me know. :)

The modulus of elasticity, E, is a measure of a material's stiffness and ability to resist deformation when a force is applied. It is defined as the ratio of stress to strain within the elastic range of the material. In other words, it describes how much a material will stretch or compress under a given force.

The modulus of elasticity is important because it allows engineers to predict how materials will behave under different conditions, such as temperature changes, loading conditions, and other factors. It also helps to determine the maximum load a material can withstand before it starts to deform or break.

In detail, the modulus of elasticity is a fundamental property of a material that describes its ability to resist deformation when subjected to external forces. It is calculated by measuring the stress and strain of the material and using the equation E = σ/ε, where σ is stress and ε is strain.

The modulus of elasticity is important in many areas of engineering, such as structural design, materials science, and mechanics. It helps to ensure that structures and materials are designed and tested to withstand the loads and stresses they will be subjected to, and it provides a basis for comparing different materials and choosing the best one for a particular application.

In summary, the modulus of elasticity, E, is a material property that describes its stiffness and resistance to deformation. It is correctly determined using Hooke's Law and is crucial for predicting the mechanical behavior of materials when subjected to stress.

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v_a = 178.74 m/s

using Bernoulli's theorem :-

P_a + ½ρ(v_a)² = P_b + ½ρ(v_b)²

Where;

P_a is pressure above wings

P_b is pressure below wings

v_a is speed above wings

v_b is speed below wings

ρ is density of air

We want to find V_a, so let's make V_a the subject;

v_a = √[(2(P_b - P_a)/ρ) + (v_b)²]

Now, we don't know (P_b - P_a)

(P_b - P_a) = Force/Area

(P_b - P_a) = mg/Area

We are given m = 2.5 × 10^(6) kg and area = 1600 m²

Thus, (P_b - P_a) = (2.5 × 10^(6) × 9.81)/1600 = 15328.125 N/m²

Density of air will be taken as 1.2 kg/m³

Thus;

v_a = √[(2(15328.125)/1.2) + (80)²]

v_a = √31946.875

v_a = 178.74 m/s.

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The dissociation reaction of hypochlorous acid (HOCl) is:

HOCl + H2O ⇌ H3O+ + OCl-

The acid dissociation constant expression for this reaction is:

Ka = [H3O+][OCl-]/[HOCl]

Since the initial concentration of HOCl is 0.0325 M and we assume that x is the concentration of H3O+ and OCl-, then the equilibrium concentrations can be expressed as follows:

[HOCl] = 0.0325 M - x

[H3O+] = x

[OCl-] = x

Substituting these expressions into the Ka expression and solving for x, we get:

Ka = [H3O+][OCl-]/[HOCl]

3.0 × 10^-8 = x^2 / (0.0325 - x)

Since the value of x is small compared to the initial concentration of HOCl, we can approximate 0.0325 - x as 0.0325. This simplifies the expression to:

3.0 × 10^-8 = x^2 / 0.0325

x = √(3.0 × 10^-8 × 0.0325) = 5.06 × 10^-5 M

Therefore, the concentration of H3O+ and OCl- in the solution is 5.06 × 10^-5 M. To calculate the pH of the solution, we can use the expression:

pH = -log[H3O+]

pH = -log(5.06 × 10^-5) = 4.30

Therefore, the pH of a 0.0325 M hypochlorous acid solution with a Ka value of 3.0 × 10^-8 is approximately 4.30.

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To keep the car from slipping, the road and tires need to have a minimum coefficient of friction of 0.188.

The things creating friction will determine the coefficient of friction. The value is often between 0 and 1, but it can also be higher. A number of 0 indicates that there is absolutely no friction between the items; superfluidity makes this feasible. Yes. Because the adhesive forces between molecules are stronger when the contact surface is substantially polished, frictional force increases. In this situation, the friction coefficient will be higher than one.

Here m= 1402 kg

r=53

v= 9.9 m/s

g=9.8

coefficient = (v^2) / rg

coefficient = (9.9^2) / (53*9.8)

coefficient = 98.01/519.4

coefficient = 0.188

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Answer:

Explanation:

A) The diagram
---> 5N
---> 6N
---> 7N

B) The force needed to replace them would be their summation so
5+7+6 = 18N

C)
---> 5N
<--- 6N
---> 7N
Now for replacing it 6N would oppose Hence negative sign
5-6+7 = 6N

(a) The maximum capillary rise of water to be expected in the glass tube is 30 mm.

(b) The maximum capillary rise of water to be expected between the  concentric glass tube is 30 mm.

The maximum capillary rise in the glass tube is calculated as follows;

\(h = \frac{2Tcos(\theta)}{r\rho g} \\\\\)

where;

\(h = \frac{2 \times 0.0735 \times cos(0)}{0.5 \times 10^{-3} \times 1000 \times 9.8} \\\\h = 0.03 \ m\\\\h = 30 \ mm\)

distance between glass tubes = 5 mm - 4 mm = 1 mm

radius of the glass = 0.5 mm

Maximum capillary rise =  30 mm

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Answer:

First, the thermometer is dipped into boiling water, and the mercury inside the thermometer rises to a high level, called the boiling point. This level is then marked as 100°C. The thermometer is then dipped into melting ice, which causes the mercury level to fall to a point called the ice point. This point is then marked as 0°C. The length of the thermometer from the 0°C mark to the 100°C point is then divided into 100 equal sections, and the rest of the levels are marked accordingly.

Answer:

Describe the limitations in detail in their final report

Explanation:

just did test

Answer:

C.

Carbohydrates and proteins are more important to a healthy life than triglycerides.

Sorry if it wrong.

Explanation:

The particles leave a trail behind them as they move. The longer the trail, the faster that the particle is moving. During any up-and-down cycle of the particle, describe the speed. It moves with the greatest speed AND smallest speed when there is a change in the direction.

The speed of an object is described as the magnitude of the change of its position over time or the magnitude of the change of its position per unit of time;

Speed is  a scalar quantity.

The particle will move faster when there is a change in the direction on the movement of the particle.

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Answer: If all forces acting on a car are zero, than the cars speed is zero since there are no forces to push or pull the car :)

Explanation: