3 Find the Total current flowing through DI and D2 and D3. Vs-10v, R1-R2-R3-10k42The three diodes are silicon. (2 Marks] R1 23 ZSO 825 203

Answer:

Resistance is inversely proportional to current because R = V/I

Explanation:

From ohms law,  The relation between resistance and current is, resistance is inversely proportional to current.

Ohm's law describes the relation between applied voltage and current flow in the conductor. It was proposed by Sir Georg Simon Ohm. The current flows in the conductor are directly proportional to the potential difference between two points.

It remains constant at room temperature. V ∝ I.  V represents the applied voltage or potential difference between two points and its unit is volt(V). I represent the current flow in the conductor and its unit is ampere(A).

Generally, Ohm's law is written as V = IR. R represents resistance that opposes the current flow in the circuit. The unit of resistance is the ohm(Ω). Resistance is inversely proportional to the current flow.

The relation of Ohm's law is written as R = V / I.  At constant voltage,                 R ∝ 1 / I. When resistance increases, current flow decreases, and current flow increases with the decrease in resistance.  

Hence, Resistance is inversely proportional to the current from the ohms law relation, R = V / I.

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Answer:

The hair dryer will transfer 640J of energy usefully to Nora’s hair.

Explanation:

Efficiency = output/input × 100%

Data

Efficiency = 64%

Energy input = 1000J

Energy output = ?

Efficiency = Energy output/Energy input × 100%

64% = Energy output /1000J × 100%

Divide both sides by 100%

0.64 = Energy output/1000J

Energy output = 0.64 × 1000J

Efficiency output = 640J

Therefore the hair dryer will transfer 640J of energy usefully to Nora’s hair.

Answer:

Around \(1.4\) solar mass.

Explanation:

In a white dwarf, electron degeneracy prevents the star from collapsing into itself. However, if the mass of the star exceeds the Chandrasekhar Limit, gravity would overcome electron degeneracy and star would collapse further.

The value of the Chandrasekhar Limit is approximately \(1.4\; M_{\odot}\) (\(1.4\) times the mass of the sun.) While this mass is the maximum possible mass of a stable white dwarf, the original mass of the star that formed this white dwarf tends to be much greater.

The energy from the light is captured and stored by the surface without being reflected or transmitted then it has been absorbed.

Bouncing back of light into the same medium is known as reflection of light

As per law of reflection we know that light incident on the surface at a given angle with respect to the normal then the angle of reflected light with the normal will be same

= angle of incidence of light = angle of reflection of light

Also we know that incident light, reflected light and normal always lie in the same plane. However in this case, the light is trapped which gives it a room to get absorbed.

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a force is a push or pull. hope i helped!

Answer:

One benefit I listed: a higher salary

Explanation:

He expands his career possibilities which can lead to a higher salary, better or more preferable hours, more vacation time, and numerous other potential outcomes.

45° angle causes the ball to travel further horizontally distance before hitting the ground

Range= distance

Range=u²sin2θ/g

for 30°

Range= -0.3u²/g

for 45°

Range=0.89u²/g

clearly 45° velocity will move farther.

Distance, which is independent of direction, is the length between two points or things. Distance solely considers the overall magnitude and disregards the start and finish places because it is a scalar attribute. Distance can only have a positive or zero value because it is a scalar attribute; it cannot be negative.

The meter (m) is the most widely used unit of measurement for distance, however kilometers (km) can also be used to describe longer distances and centimeters (cm) or millimeters can be used to express shorter distances (mm). The distance traveled is frequently represented by the letter D when computing distance.

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Maximum horizontal displacement is 59.92m and Maximum vertical displacement is  22.5m.

The definition of displacement is the modification of an object's position. It has a direction and magnitude and is a vector quantity. It is shown as an arrow that travels from the initial position to the conclusion. An object's position changes, for instance, if it moves from position A to

Given initial velocity, v = (140+ 21) m/s

Hence horizontal component of v is \(v_{x}\) = 14m/s

Vertical component of v is \(v_{y}\) = 21m/s

This problem can be solved using the equations of motion related

to projectile motion,

Hang time is the double of the time required to attain maximum

vertical displacement.

i.e Hang time t = 2 x \(v_{y}\)/g

Hang time t = 2 x 21/9.8 = 4.28s.

Maximum horizontal displacement = \(v_{x}\)t (no horizontal acceleration)

Maximum horizontal displacement = 14 × 4.28 = 59.92m

Maximum vertical displacement = \(v^{2} _{y}\)/2y

Maximum vertical displacement = 21²/2×9.8 = 22.5m

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Answer:

--->The goals of the investigators is to prevent tampering with evidence and reduce exposing workers to additional harm.

--> The investigators are able to find out how fast a car that was involved in an accident was going by measuring the length of skid marks.

Explanation:

Automobile or car accidents are incidents which when it occurs are generally fast, violent and confusing to both the people involved and the eyewitnesses. With the development in technology, investigators (usually known as forensic investigators) use a variety of tools and physical evidence to put together a clear picture of what happened during a car accident. With their discoveries, they would be able to to prevent tampering with evidence and reduce exposing workers to additional harm.

They can know how fast a car that was involved in an accident was going by:

--> Analysing a physical evidence such as measurement of the length of skid marks. When the skid distance (which is the drag factor due to road surface friction) and the braking efficiency are determined, the minimum speed of a car as it started skidding can be estimated. Even the appearance of the skid mark also tells investigators whether a car was braking, accelerating, or sliding.

Answer:

I'm not that busy solving but I'll tell you the formula that Force x distance is equal to work done

The work is done on a pumpkin when we lift it by 15 m with 24 N is 360 J

Work done is the amount energy gained (loosed) in bringing the body from initial position to final position. It is denoted by W and its SI unit is joule(J).  

i.e. Work(W) is force(F) times displacement(s).

W=F× s

When a body is displaced with 1 newton of force by 1 m, then we can say that work has been done on the body by 1 joule.

Writing for it's dimension,

W=F× s

Force has dimension [L¹ M¹ T²]

Displacement has dimension [L¹]

multiplying both the dimensions Force and Displacement  

we get,

dimension of Work [L² M¹ T²]

According to newton's second law of motion,

Force(F) is mass(M) times acceleration(a).

i.e. F=ma

Given,

Force = 24 N

Displacement = 15 m

W=F.s= 24*15 = 360 J

Hence work done on pumpkin is 360 J

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Answer:

Q = 231.6 J

Explanation:

Given that,

Mass, m = 3 g

The temperature rises from 20°C to 220°C.

We know that, the specific heat of copper is, c = 0.386 J/g K

We know that the energy transferred in heating of copper is given by :

\(Q=mc\Delta T\\\\Q=3\times 0.386\times (220-20)\\\\Q=231.6\ J\)

So, the required energy is equal to 231.6 J.

Answer:

The circuit in series has a greater resistance.

Explanation:

The current is forced to flow throw two resistors instead of just one as it if it were in parallel.

Answer:

I think milligram is the correct answer.

Answer:

D. milliliter

Explanation:

Took it on usatestprep

The motion of the moon in space to produce the different phases is the rotation and the revolution.

The moon's rotation is characterized as the movement that this body performs on its own axis.

In addition, the moon also performs the movement of revolution, which is characterized as the movement of the moon around the Earth.

The revolution lasts approximately 28 days, and just like the rotation allows for the existence of 4 phases of the moon, every 7 days.

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Answer:

it = 5.5e-5 cm

just tyoe in on the search bar nm to cm and a calculatro comes up

Explanation:

In the experiments of discovering electricity, I and II, at the beginning of the chapter, objects such as paper bits, feather, and pith ball are attracted to a plastic rod rubbed with wool.

In the experiments of discovering electricity I and II, which are commonly performed to demonstrate static electricity, certain objects can be attracted to a plastic rod when it is rubbed with wool. This phenomenon occurs due to the transfer of electric charge between the plastic rod and the wool.

When the plastic rod is rubbed with wool, electrons are transferred from the wool to the rod, causing the rod to become negatively charged. As a result, objects with a positive charge or neutral objects are attracted to the negatively charged rod. In the mentioned experiments, objects like paper bits, feather, and pith ball are typically used to demonstrate this attraction.

The electrical attraction between the plastic rod and the objects is a result of the redistribution of electric charge and the resulting electrostatic forces.

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Answer:According to Coulomb's law, the electrostatic force between two bodies is proportional to the product of their two charges. If the charge on A is increased this product increases in size (it must have been non-zero to begin with, since there was a force between them at first). Thus, the force between them rises.

Explanation:

Concavelenses have negative focal length and tlways form virtual images.

The focal length is negative as it lies on the left side of lenses.

There are many ways to report fraud like hotlines, online reporting, email or postal mail, and in person reporting.

There are several ways to report potential fraud, waste, and abuse (FWA) depending on the situation and the reporting individual's preference.

It is important for individuals to feel confident that their report will be taken seriously and treated confidentially.

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A) The elastic potential energy stored in the spring is 25 J. B) The speed of the mass as it passes through the equilibrium point is 2.58 m/s.

A) To find the elastic potential energy stored in the spring, use the formula:
Elastic potential energy (PE) = (1/2)kx^2
Where k is the spring constant (500 N/m) and x is the displacement from the equilibrium length (0.1 m).
PE = (1/2)(500)(0.1)^2
PE = 25 J
B) The elastic potential energy will be converted to kinetic energy when the spring is released. Use the formula:
Kinetic energy (KE) = (1/2)mv^2
Where m is the mass (0.75 kg) and v is the velocity.
Since PE = KE, we can find the velocity:
25 J = (1/2)(0.75 kg)v^2
Solve for v:
v = 2.58 m/s

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Answer:

true

Explanation:

have a good day ml

The metric system uses Celsius as the primary unit of measurement for temperature.

Nearly all nations in the world use the metric system as their official unit of measurement, which includes Celsius. The Celsius scale is used to measure temperature in most scientific disciplines. The freezing point of water is zero degrees Celsius, and the boiling point is one hundred degrees Celsius. By the middle of the 20th century, Celsius, the most widely used temperature unit in the modern metric system, had been adopted by the majority of the world. Anders Celsius, a Swedish astronomer, created the Celsius scale in 1742.

Most places in the globe measure temperature using the Celsius system (°C). The historical development of this empirical scale led to the definition of its zero point, 0 °C, as the freezing point.

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Explanation:

A. Something that occupies a volume of space and also has mass

Answer: 0.8

Explanation:

The efficiency is defined as the ratio of total imput energy that is actually utilized to the end of the device.

So if we have a total transfer of 1500j of energy, and 1200j are used to heat the thing inside the kettle, 300j are not used to the actual function of the kettle.

So the efficiency is n = 1200j/1500j = 0.8

This means that a 80% of the energy imput is actually used to heat the kettle.

Answer:

The final velocity of the car can be calculated using the equation:

v = u + at

where:

v = final velocity

u = initial velocity (since the car starts from a full stop, the initial velocity is 0)

a = acceleration (0.12 m/s^2)

t = time (unknown, but can be calculated using the distance and velocity)

To find the time, we can use the distance and velocity formula:

d = ut + (1/2)at^2

75 = 0 + (1/2)(0.12)(t^2)

t = sqrt(75/(1/2)(0.12))

t = sqrt(625/0.06)

t = sqrt(10416.67)

t = 102.41 seconds

Now we can substitute the values for u, a and t into the first equation to find the final velocity:

v = u + at

v = 0 + (0.12)(102.41)

v = 12.29 m/s

The magnitude of the final velocity of the car is 12.29 m/s.

Surprise is the facial expressions is recognized by people of all cultures.

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The human person and electromagnetic fields both have their benefits and drawbacks. They do present a threat to public health. Power plants produce a tremendous amount of electricity.

When an electrically charged object moves through space, it receives a magnetic force in the magnetic field. The coil becomes magnetised when current passes through the circuit. A straight wire's magnetic field in an electrical circuit is weaker than a coiled wire's magnetic field.

Power plants produce a tremendous amount of electricity, which is then sent across the nation on high-voltage cables. Electromagnetic fields are produced by appliances, power lines, radars used by the military and airports, substations, transformers, computers, and other electrically powered machinery. Scientists have shown that our well-being is actually influenced by the earth's electromagnetic climate. Since there are so many objects in our daily lives that produce electromagnetic fields, it is challenging to avoid them.

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Answer:

Yes a body moving with a constant speed has an acceleration. When an object travel in a circle with a constant speed it's direction keeps changing as a result velocity changing but it works at the centre of the circle therefore acceleration acts at the centre of the circle.

Answer:no

Explanation:

Answer:

The answer is A. Cementing...

Explanation:

hope this helps

Answer:

plate tectonics

Explanation:

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Answer: According to the Kilmersdon story, Jack and Jill were a couple expecting a baby. As the lyrics passed down to us attest, Jack popped out to fetch water but had an accident on the hill and sadly died. Jill experienced a heartbreak so severe that she passed away just after giving birth to her son.

Explanation: i just know