Please help me explain in details for all question 1. Thank you.
QUESTION 1 a) Calculate the density of the moon by assuming it to be a sphere of diameter 3475 km and having a mass of 7.35 x 1022 kg. Express your answer in g/cm³. (3 marks) b) A car accelerates fro

Without calibration, the data would no longer be accurate since it would deviate from real values. Therefore, calibration is occasionally required.

It converts an applied mechanical force—such as load, weight, tension, compression, or pressure—into another physical variable—in this case, an electrical output signal—that can be measured, converted, and standardized. The electrical signal changes in direct proportion to the force acting on the sensor.

A load cell or weight sensor is often referred to as a force sensor. They are employed to gauge load, strain, and compression. A lot of them contain internal strain gauges that are attached to the metal structure and respond even to the smallest compression changing the resistance and reporting on the outcomes.

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Newton's first law of motion says that an object will continue to stay at rest or at a constant velocity until acted upon by an external force.

This law is also referred to as the law of inertia. It is one of three laws of motion that Sir Isaac Newton established in the seventeenth century.

According to the first law of motion, an object at rest or in motion will continue to remain so unless acted upon by an external force.

Inertia is a term used to describe the resistance of an object to a change in its state of motion.

The greater the mass of an object, the more resistance it will have to a change in its state of motion.

As a result, objects with more mass are more difficult to move, while objects with less mass are easier to move.

This concept has implications in various aspects of science and engineering.

For example, understanding the principles of inertia is important in the design of automobiles and roller coasters, where the forces acting on objects in motion are critical factors in determining their safety and performance.

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The depth of water of density 1020 kg/m³ where the pressure is 3.0 x 10^6 Pa is approximately 306.74 meters.

The depth of water can be calculated using the formula:

d = P / (ρ * g)

where:

d = depth of water

P = pressure

ρ = density of water

g = acceleration due to gravity (9.81 m/s²)

Substituting the given values, we get:

d = (3.0 x 10^6 Pa) / (1020 kg/m³ * 9.81 m/s²)

= 306.74 meters

Therefore, the depth of water of density 1020 kg/m³ where the pressure is 3.0 x 10^6 Pa is approximately 306.74 meters.

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The efficiency of the engine is 83.4% assuming  that the

heat capacity is 21 J/K and the universal gas constant is 0.08206 L · atm/mol/K =8.314 J/mol/K.

Efficiency is described as the often measurable ability to avoid wasting materials, energy, efforts, money, and time while performing a task.

The efficiency of the engine is given by:

E = W/Q

where;

W = the work done in the four steps,

Q = the energy input

Since there at four steps in a cycle:

E = w1+ w2 +w3+ w4/ q1+ q2+q3+q4

We calculate that the work done in the first step (isothermal expansion)

n= 1 mole, T1 = 402 K, V2 = 41.2 L, V1 = 18.5 L

We also solve for Steps 2 and 4 are constant volume processes,

We also calculate  work done in the third step (isothermal expansion) is

where;

n = 1 mol, T3 = 273 K, V4 = 41.2 L, V3 = 18.5 L

We notice that Heat enters the system only during steps (1) and (4).

The internal energy of the gas increases in step 4 but no work is done, while the internal energy is constant change in step 1 but work is done by the gas.

Cv =21 J/K, T3 = 273 K, T4 = 402 K

We Solve  for efficiency, ɛ:

ɛ = 2676.01  +0 +0 + 1879.29/ 2676.01  +0 +0 + 2709 = 83.4%.

Therefore, the efficiency of the engine is 83.4%.

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Answer:

Solution given:

velocity=40cm/s

wave length=5cm

we have

frequency =velocity/wavelength=40/5=8hertz.

the frequency of the wave is 8 hertz.

One of the benefits of keeping your supplies stocked and your electronics in a perfect working condition is that:

It makes sure your work does not take too long

In a normal system and environment, the importance of keeping goods or supplies well cannot be overemphasized. In such a system, when customers comes to get goods, it makes it easier for them to release as it won't take much time presenting it.

That being said, our electronics too, when they are in a perfect order of arrangements, puts them in good condition.

In conclusion, when we keep supplies stocked, it helps to saves time.

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Total 2.54 cm far below the interface between the two liquids is the bottom of the block.

Oil having a density of floats on water = 930 kg/m^3

A rectangular block of wood height = 4.19 cm

A rectangular block of wood having density of floats partly in the oil and partly in the water = 979 kg/m3

We have determine how far below the interface between the two liquids is the bottom of the block.

For the equilibrium:

ρ(wood)gh - ρ(oil)g(h−x) - ρ(water)gx = 0

ρ(wood)h - ρ(oil)(h−x) - ρ(water)x = 0

(974)(3.97) - 928(3.97−x)−1000x = 0

3866.78 - 3684.16 + 928x - 1000x = 0

Simplify

182.62 - 72x = 0

Add 72x on both side we get

72x = 182.62

Divide by 72 on both side, we get

x = 2.54 cm

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The complete question is:

Oil having a density of 930 kg/m^3 floats on water. A rectangular block of wood 4.19 cm high and with a density of 979 kg/m3 floats partly in the oil and partly in the water. The oil completely covers the block. How far below the interface between the two liquids is the bottom of the block?

Answer:

give brainliest please

Explanation:

T- lymphocytes or T cells

The law of conservation of mass states that the mass in an isolated system can neither be created nor be destroyed but can be transformed from one form to another.

In the conversion of any form of energy, it obeys the law of conservation. That is to say that energy is not lost but can be converted from one form to another.

A form of energy can transform to another form when there is a change in its state.

For example, light energy in bulbs is being converted to heat energy with the bulb is lit.

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0.15*10^7m/s is linear speed must an earth satellite have to be in a circular orbit at an altitude of 162 km above earth's surface. 0.67*10^-3s is the period of revolution

What are the three fundamental laws of gravitation?

According to the first law, until a force acts on an item, it will not alter its motion. According to the second law, an object's force is determined by multiplying its mass by its acceleration. According to the third law, when two objects come into contact, they exert pressures on one another that are equivalent in size and direction.

v ⇒ sqrt(GM/r)

G ⇒ 6.67*10^-11

M ⇒ 5.972 × 10^24 kg

r ⇒ 162km

v ⇒ sqrt(6.67*10^-11 * 5.972 × 10^24 / 162)

v ⇒0.15*10^7m/s

T ⇒2πr/v

T ⇒ 2*3.14*162/0.15*10^7

T ⇒0.67*10^-3s

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Answer:

ok, I have taken that class my 8th-grade year I might be able to help what is the question tho kinda confused about that?

Explanation:

sorry ?

Answer:

Principal, Teacher, Curator, Writer

Explanation:

The power steering pressure switch is an essential component for ensuring the safety and reliability of the vehicle.

The component that signals the computer in this scenario is known as the power steering pressure switch. It is a small sensor that is located within the power steering system of the vehicle.

When the power steering pressure increases, such as during a turn at low speed, the switch will detect this change and send a signal to the computer.

This signal will then prompt the computer to increase the idle speed of the engine, which helps prevent stalling. This process is designed to ensure that the engine continues to run smoothly even when the power steering system places additional demands on it.

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Answer:

a=5m/s

Explanation:

Forces going to the left:  \(F_{3}\)

Forces going to the right: \(F_{1}\) and \(F_{2}\)

To indicate the different directions, let the forces going to the left be negative, and the sign on forces going to the right be positive.

The total forces acting on the system are:

\(F_{1}\) + \(F_{2}\) + \(F_{3}\)

100N + 80N - 30N = 150N

The overall force is therefore 150N going to the right (sign is positive). Now time to find the overall acceleration:

Force = mass * acceleration

150 = 30a

a=5m/s

The force of gravity on a 1-kilogram box located at a point 1.3 × \(10^{7}\)meters from the center of Earth is approximately 9.81 newtons.

What is Gravity?

Gravity is a fundamental force of nature that causes physical objects with mass to be attracted to each other. It is a force that exists between any two objects in the universe, regardless of their distance or size. The strength of the gravitational force between two objects depends on their masses and the distance between them.

The force of gravity on an object depends on its mass and the distance between it and the center of the attracting body. The formula to calculate the force of gravity is:

F = G * (m1 * m2) /\(r^{2}\)

where F is the force of gravity, G is the gravitational constant, m1 and m2 are the masses of the two objects, and r is the distance between their centers.

In this problem, the object is a 1-kilogram box, the mass of Earth is 5.98 × \(10^{24}\) kilograms, and the distance between the box and the center of Earth is 1.3 ×\(10^{7}\) meters. The value of G is given as 6.673 × 10^-11 newton . Using these values, we can calculate the force of gravity on the box as:

F = (6.673 × \(10^{-11}\) * (1 kg * 5.98 × \(10^{24}\) kg) / (1.3 × \(10^{7}\))

F = 9.81 newtons

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The potential energy of the satellite-Earth system is -1.11 x 10^11 J,The magnitude of the gravitational force exerted by the Earth on the satellite is 981 N.By Newton's third law, the satellite exerts an equal and opposite force of 981 N on the Earth.

(a) The potential energy of the satellite-Earth system is given by U = -G(m1m2)/r, where G is the gravitational constant, m1 and m2 are the masses of the satellite and Earth respectively, and r is the distance between their centers. Plugging in the given values, we get U = -1.11 x 10^11 J.

(b) The magnitude of the gravitational force exerted by the Earth on the satellite is given by F = G(m1m2)/r^2, where G is the gravitational constant, m1 and m2 are the masses of the satellite and Earth respectively, and r is the distance between their centers. Plugging in the given values, we get F = 981 N.

(c) By Newton's third law, the satellite exerts an equal and opposite force of 981 N on the Earth. This is because every action has an equal and opposite reaction, according to Newton's third law of motion. Therefore, the satellite and Earth exert equal and opposite forces on each other.

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Answer: The relationship between changing magnetic flux and induced electromotive force is known as Faraday's law of electromagnetic induction: The magnitude of an electromagnetic force induced in a circuit is proportional to the rate of change of the magnetic flux that cuts across the circuit.

Explanation:

A 40.0 g bullet strikes a wooden block having mass  7.00 kg . If the bullet becomes embedded in the block and they both move off at a velocity of 5.00 m/s, then the initial velocity of the bullet is 880 m/s.

Momentum is defined as product of mass and velocity of the body. It is denoted by letter p and it is expressed in kg.m/s. Mathematically p = mv. it discuss the moment of the body. body having zero mass or velocity has zero momentum. The dimensions of the momentum is [M¹ L¹ T⁻¹].

according to law of conservation of momentum

m₁v₁ + m₂v₂ = (m₁+m₂)v

initial velocity of the wooden block is zero cause it is at rest.

m₁v₁  = (m₁+m₂)v

Putting all the values in the equation,

0.04v₁  = (0.04+7)×5

0.04v₁  = (0.04+7)×5

v₁  = 880 m/s

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Answer:

Asking a question

Research existing sources

Define an hypothesis

Design and conduct a study

Draw conclusion

Report result.

Explanation:

Scientific study simply means establishing the existence or proving the veracity of an hypothesis, hence making it a fact. A scientific study follows an orders set of procedure;

Asking a question is the first step as this is what prompts the research, question usually stems after making an observation.

The a observation made and question asked will lead to making research on the observed phenomenon, this is to check if such question has been asked in the past and maybe any scientific study as been carried out in the past.

To make research further, an hypothesis is defined in a bid to find more evidence to support one's observation through experiment.

Study design and implementation is next as the type of study to be embarked upon will determine which type of design preparation and study pattern to deploy.

Conclusion a d report of observations made are the last part of a scientific study which is key as all outcomes of the study should be adequately detailed in an understandable format while also ensuring reproducibility.

Answer: A negatively charged particle that is found in atoms.

The ship's speed relative to the ground is 25 km/hr to the South.

The displacement is zero, which means that the final position is the same as the initial position. The movements to the North and South cancel out, and the movements to the East and West cancel out.

Velocity is a vector quantity that describes the rate at which an object's position changes over time.In other words, velocity is an object's speed in a specific direction. The velocity of an object is typically represented by a vector, which has both magnitude (the speed of the object) and direction.

The ship's speed relative to the water is 22 km/hr to the South. If there is a current of 3 km/hr to the South, the ship's speed relative to the ground is the vector sum of its speed relative to the water and the velocity of the current. Since the two velocities are in the same direction, we can simply add them to get:

velocity relative to the ground = 22 km/hr to the South + 3 km/hr to the South = 25 km/hr to the South.

Therefore, the ship's speed relative to the ground is 25 km/hr to the South.

Similar to the previous problem, the ship's speed relative to the ground is the vector sum of its speed relative to the water and the velocity of the current. However, this time the current is going in the opposite direction, so we need to subtract the velocity of the current from the ship's speed relative to the water:

velocity relative to the ground = 22 km/hr to the South - 3 km/hr to the North = 22 km/hr to the South + 3 km/hr to the South = 25 km/hr to the South.

Therefore, the ship's speed relative to the ground is 25 km/hr to the South.

The displacement is characterized by the difference between the final and initial positions. In this case, the initial position and the final position are the same, so the displacement is zero. We can represent the two movements using vectors:

50 m to the right = +50 m i

20 m to the left = -20 m i

The displacement vector is the vector sum of these two vectors:

displacement = +50 m i - 20 m i = +30 m i

Since the x-component of the displacement vector is positive, the displacement is to the right.

We can represent the four movements using vectors:

2 km North = +2 km j

4 km East = +4 km i

2 km South = -2 km j

4 km West = -4 km i

The displacement vector is the vector sum of these four vectors:

displacement = +2 km j + 4 km i - 2 km j - 4 km i = 0 km i + 0 km j

Therefore, the displacement is zero, which means that the final position is the same as the initial position. The movements to the North and South cancel out, and the movements to the East and West cancel out.

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Answer:

these organs make up four fifth's of it's body, and gives the electric eel ablity to generate two types of electric organ discharges:low voltage and high voltage

Answer:

Circuit Breaker - a protective device used to automatically blows and cuts the current when trouble in the circuit such as short circuit or overload occurs

"This was the idea that non-living objects can give rise to living organisms."

Answer:

0.14 m/s/s

Explanation:

The Moon was in its waning phase during the eight days that Theresa observed it. The Moon goes through different phases as it orbits the Earth, transitioning from New Moon to Full Moon and back again.

The changing appearance of the Moon is due to its position relative to the Earth and the Sun, which causes varying amounts of sunlight to be reflected back to us. When Theresa observed that the bright part of the Moon was getting smaller every night, it indicates that the Moon was in its waning phase. During the waning phase, the illuminated portion of the Moon visible from Earth gradually decreases. This occurs because the Sun's light is shining on the side of the Moon facing away from us, making less and less of the illuminated side visible over time. The waning phase continues until the Moon reaches the New Moon phase, where the illuminated side is completely hidden from view. Thus, the observation made by Theresa suggests that the Moon was in the process of transitioning from a Full Moon to a New Moon during the eight days she observed it.

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The objective's focal length is roughly -15.31 cm. The converging lens objective is indicated by the negative sign.

The formula for compound microscope magnification can be used to get the focal length of the objective:

M = -(f₀ / fₑ)× (1 + d / f₀)

Where:

M = Magnification of the compound microscope = -4515 (negative sign indicates an inverted image)

f₀ = Focal length of the objective

fₑ = Focal length of the eyepiece = 2.6 cm

d = Distance between the objective and eyepiece = 16 cm

f₀ = -(M * fₑ) / (M + (d / fₑ))

Putting all the given values:

M = -4515

fₑ = 2.6 cm

d = 16 cm

f₀ = -((-4515) × 2.6) / (-4515 + (16 / 2.6))

f₀ ≈ -15.31 cm

Therefore, the objective's focal length would be roughly -15.31 cm and the converging lens objective will be indicated by the negative sign.

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The current through each resistor is 13 A.

To calculate the current in each resistor, we can use Ohm's law, which states that the current through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance between them.

In this case, we are given the current and the resistance of each resistor, so we can use Ohm's law to calculate the voltage across each resistor, and then use the current to find the current through each resistor.

Let's start with the first resistor, which has a resistance of 2 ohms:

V = IR

V = (13 A) x (2 ohms)

V = 26 V

Now, we can use the voltage and resistance to find the current through the first resistor:

I = V/R

I = (26 V) / (2 ohms)

I = 13 A

So, the current through the first resistor is also 13 A.

Next, we can repeat the same process for the other two resistors:

For the second resistor with a resistance of 3 ohms:

V = IR

V = (13 A) x (3 ohms)

V = 39 V

I = V/R

I = (39 V) / (3 ohms)

I = 13 A

So, the current through the second resistor is also 13 A.

For the third resistor with a resistance of 4 ohms:

V = IR

V = (13 A) x (4 ohms)

V = 52 V

I = V/R

I = (52 V) / (4 ohms)

I = 13 A

So, the current through the third resistor is also 13 A.

Therefore, the current through each resistor is 13 A.

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Answer: C

Explanation:

Since bulb B is burnt out, the wires can't transfer to bulb A, so that's why bulb A will burn out.

If I get it wrong, sorry. Im still learning.

The geothermal gradient in the tectonically stable region is approximately 21°C/km, indicating that the temperature increases by an average of 21 degrees Celsius per kilometer of depth.

To calculate the geothermal gradient, we need to find the rate at which the temperature increases with depth.

Temperature at the surface (T₁) = 14°C

Temperature at a depth of 5.0 km (T₂) = 119°C

Temperature difference = T₂ - T₁ = 119°C - 14°C = 105°C

Depth difference = 5.0 km - 0 km = 5.0 km

Geothermal gradient = Temperature difference / Depth difference

Geothermal gradient = 105°C / 5.0 km

Calculating this expression, we find:

Geothermal gradient ≈ 21°C/km

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