If a circuit had 4 D-Cell batteries (each 1.5 V) and a lightbulb with resistance of 2 ohms, what is the current that flows through the circuit?
2 A
3 A
6 A
8 A

The simple machines that are used in the tool or device include all of the following:

In Science, a simple machine can be defined as a type of machine that is designed and developed with no moving parts, but can be used to perform a specific work.

Additionally, there are six (6) simple machines and these include the following;

Generally speaking, a simple machine allows for the transformation of energy into work.

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Answer:

F = 9 N

Explanation:

We have,

Mass of a ball is 2 kg

The radius of the circle the ball travels around is 2 m

Let the velocity of the ball is 3 m/s

It is required to find the centripetal force on the ball. The force that is required to move an object in circular path is called centripetal force.

\(F=\dfrac{mv^2}{r}\\\\F=\dfrac{2\times (3)^2}{2}\\\\F=9\ N\)

So, the centripetal force on the ball is 9 N.

Answer:

6 v

Explanation:

Answer:

84kg

Explanation:

If the mass of an astronaut in on the moon is 84kg on the moon. After the 3weeks in returning home, his weight will not change. The mass of the astronaut will remain the same which is 84kg. This is so because the acceleration due to gravity experienced by the body remains the same both in the earth and in moon.

Answer:

Distance is a scalar quantity that refers to "how much ground an object has covered" during its motion. Displacement is a vector quantity that refers to "how far out of place an object is"; it is the object's overall change in position.

Explanation:

:)

Answer: The complete length of the path between any two points is called distance. Displacement is the direct length between any two points when measured along the minimum path between them.

Explanation: It's what's!!

Answer:

well i'm not sure if which unit of measure you need but i think its 86.49 meters  tall.

The dark absorption lines on the continous spectrum represents absoprtion of some of the light before the observation of the spectrum.

The continous spectrum of helium represents the star is made up of helium.

The dark absorption lines superimposed on the sontinous spectrum represents the light from the star has passed through a cloud of helium in which helium atoms absorbs the emitted helium light from the star.

Hence, option D is a correct answer.

If the flow time of the process with all 6 workers is T, then the flow time of the process working at half capacity would be 2T.

Assuming each task takes the same amount of time to complete, and each worker works at the same rate, then the total time to complete all tasks would be the sum of the times taken by each worker.

If the process works at half of its maximum capacity, then only 3 workers are working at any given time. Therefore, the total time to complete all tasks would be twice as long as if all 6 workers were working simultaneously.

So, if the flow time of the process with all 6 workers is T, then the flow time of the process working at half capacity would be 2T.

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The average velocity of the object over the given intervals can be calculated using the position function s(t) = \(-18t^{2}\) + 54t. The average velocities are as follows: (a) -144, (b) -126, (c) -108, and (d) -18h + 36.

The average velocity of an object can be found by calculating the change in position divided by the change in time. In this case, we are given the position function s(t) = \(-18t^{2}\) + 54t.

(a) For the interval [1,10], the change in time is 10 - 1 = 9. To find the change in position, we evaluate s(10) - s(1):

s(10) = \(-18(10)^{2}\) + 54(10) = -1800 + 540 = -1260

s(1) = \(-18(1)^{2}\) + 54(1) = -18 + 54 = 36

Change in position = -1260 - 36 = -1296

Average velocity = Change in position / Change in time = -1296 / 9 = -144.

(b) For the interval [1,9], the change in time is 9 - 1 = 8. To find the change in position, we evaluate s(9) - s(1):

s(9) = -18(9)^2 + 54(9) = -1458 + 486 = -972

Change in position = -972 - 36 = -1008

Average velocity = Change in position / Change in time = -1008 / 8 = -126.

(c) For the interval [1,8], the change in time is 8 - 1 = 7. To find the change in position, we evaluate s(8) - s(1):

s(8) = \(-18(8)^{2}\) + 54(8) = -1152 + 432 = -720

Change in position = -720 - 36 = -756

Average velocity = Change in position / Change in time = -756 / 7 = -108.

(d) For the interval [1,1+h], the change in time is (1+h) - 1 = h. To find the change in position, we evaluate s(1+h) - s(1):

s(1+h) = \(-18(1+h)^{2}\) + 54(1+h) = -18(1 + 2h + h^2) + 54(1 + h) = -18 - 36h - \(18h^{2}\) + 54 + 54h = 36h - \(18h^{2}\) + 36

s(1) = \(-18(1)^{2}\) + 54(1) = -18 + 54 = 36

Change in position = (36h - \(18h^{2}\) + 36) - 36 = 36h - \(18h^{2}\)

Average velocity = Change in position / Change in time = (36h - \(18h^{2}\)) / h = 36 - 18h.

Therefore, the average velocities for the given intervals are (a) -144, (b) -126, (c) -108, and (d) 36 - 18h.

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Answer:

To measure diameter of a spherical body using Vernier Callipers.A small, movable auxiliary graduated scale attached parallel to a main graduated scale and calibrated to indicate fractional parts of the subdivisions of the larger scale.It is useful tool to measure spherical body.Diameter of a sphere=d = 2 * r , Surface area of a sphere: A = 4 * π * r² , Volume of a sphere: V = 4/3 * π * r³ , Surface to volume ratio of a sphere: A / V = 3 / r .

Answer:

position 1 and 4................

Answer:

a=no the electricity device can't be charged themselves without plugging it.

b=antimatter does not have a negative mass

c= temperature does not have all of its particles

Answer:

6.7 m/s^2

Explanation:

The formula of acceleration is:

\(\displaystyle{\vec{a} = \dfrac{\Delta \vec{v}}{\Delta t} = \dfrac{v_2 - v_1}{t_2-t_1}}\)

where \(\displaystyle{\vec{a}}\) is acceleration, \(\displaystyle{\vec{v}}\) is velocity and \(\displaystyle{t}\) is time. \(\displaystyle{v_2}\) means final velocity. \(\displaystyle{v_1}\) means initial velocity, \(\displaystyle{t_2}\) means final time and \(\displaystyle{t_1}\) means initial time.

We are given that the Firebird travels at velocity of 0 to 60 mph in four seconds. Therefore:

Since it travels to the east then our vector will be positive. However, acceleration has to be in m/s^2 unit (Sl unit) so we'll have to convert from mph (miles per hours) to m/s (meters per second) first.

We know that:

Now we divide 1609.344 by 3600 to find a unit rate of m/s:

\(\displaystyle{\dfrac{1609.344}{3600} \ \, \sf{m/s}}\\\\\displaystyle{= 0.44704 \ \, \sf{m/s}}\)

Now multiply 0.44704 m/s by 0 and 60 to get velocity in m/s unit:

Time is already in second so no need for conversion. Substitute known information in the formula:

\(\displaystyle{\vec{a} = \dfrac{26.82-0}{4-0}}\\\\\displaystyle{\vec{a} = \dfrac{26.82}{4}}\\\\\displaystyle{\vec{a} = 6.7 \ \, \sf{m/s^2}}\)

Therefore, the Firebird will accelerate at the rate of 6.7 m/s^2.

Answer:

Newton's first law says that without external forces, your velocity doesn't change. Remember that velocity is both how fast you're going but also what direction you're going.

Normally, a car turns because the tires on the ground have traction so they have friction which allows them to change direction and turn. But on an icy highway, tires can't get much friction so it's really hard to turn.

Because the ice stops friction, a car can't get enough force to change direction and follow the curve, meaning it will try and stay going in the same direction, which is dangerous.

Answer: 450,000 m/s (this is for part a only since I don’t know the rest of it)

Explanation: Since you’re solving for kinetic energy, you would use the equation KE = 1/2mv^2.

KE = 1/2 (1,000 kg)(30 m/s)^2

KE = 1/2 (1,000 kg)(900 m/s)

KE = 1/2 (900,000)

KE = 1 * 900,000

KE = 900,000/2

KE = 450,000 m/s

Hope this helps! Sorry that I couldn’t help solve the rest.

If a trait is X-linked dominant, it means that the gene for the trait is located on the X chromosome.

Force is a physical quantity that describes the interaction between objects. It is a vector quantity, meaning it has both magnitude and direction. Force is a measure of how much an object is pushed or pulled in a specific direction. The unit of force in the International System of Units (SI) is the Newton (N). Forces can cause a change in the motion of an object. For example, a force can cause an object to speed up, slow down, change direction, or remain in its current state of motion. The study of forces and their effects on objects is known as mechanics.

Here,

This means that a female with one dominant X chromosome and one recessive X chromosome will express the dominant trait, while a male with only one X chromosome will also express the dominant trait. Females are more likely to be carriers of X-linked dominant traits, while males are more likely to express the traits themselves.

X-linked dominant traits are expressed when the gene on the X chromosome is dominant over the gene on the corresponding chromosome.

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After reducing the dimensions, the new resistance of the rectangular block will be three times of the initial value.

Let us assume that initially dimensional conditions of the rectangular blocks are like this,

B is breadth,

L is length,

H is the height,

p is the resistivity.

Now, the resistance will be given by,

R = pL/(BxH)

Now, when the dimension are reduced to a third of the initial values, we get new resistance,

R' = (pL/3)/(BxH/9)

R' = 3pL/(BxH)

Putting R = pL/(BxH),

R' = 3R

So, the new resistance will be three times of the initial value.

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Answer: its slowing down

Explanation:

The car is slowing down because its on the corner of the track.

If it were to go the same speed the other cars are going while on the straight part of the track it would go off the track therefore the car must slow down to stay in the race

The pickup truck has a changing velocity as it is slowing down. This is because the truck is on the corner of the truck.

An object can change its velocity in a number of different ways as it can slow down, it can speed up, or it can change its direction of motion. A change in the speed, or a change in the direction of motion, or a change in both the speed and direction of motion of the object means that the object has an overall change in velocity.

The pickup truck is slowing down because it is on the corner of the track. If it were to go on with the same speed as the other cars are going in the direction while on the straight path of the track it would go off the track and therefore the car must slow down to stay in the race of vehicles.

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The radioulnar joint is a synovial joint located at the elbow that connects the radius and the ulna, enabling rotational motion.

The radioulnar joint allows for pronation and supination. Pronation refers to the motion of rotating the forearm so that the palm faces downwards, while supination refers to the motion of rotating the forearm so that the palm faces upwards. The radioulnar joint allows the radius and ulna to move relative to each other, resulting in rotational motion.

When the forearm is pronated, the radius rotates over the ulna and crosses it, while the ulna remains stationary. When the forearm is supinated, the radius rotates back to its original position, and the two bones are parallel to each other.The radioulnar joint is important in many activities, including writing, typing, playing musical instruments, and sports like tennis and golf. Any damage to this joint can result in a loss of pronation and supination, making daily activities challenging.

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Answer:

F = 9800(42667 + 16000)

F = 5.75 × 10⁸N

Explanation:

The two windings of a conventional transformer are known as inductively linked.

Hence option B. Inductively linked is correct.

Transformers are electromagnetic devices that use electromagnetic induction to convert alternating current (AC) voltage from one voltage level to another voltage level.

They are one of the most essential and commonly utilized electrical devices, and they are utilized in a variety of applications in various sectors.

An electrical transformer has two coils of wire, which are referred to as windings.

The two windings, the primary and the secondary, are inductively linked.

The primary winding and the secondary winding are connected to a magnetic core, which helps the magnetic flux generated by one winding to pass through the other winding.

Inductively linked circuits have the capability to transfer power from one circuit to another without requiring a direct connection between them.

These circuits are critical in numerous applications because they enable the safe transmission of high voltages at long distances without the need for excessively thick wires or direct electrical connections.

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When a diffraction grating having a specified number of slits per unit length is illuminated by a beam of light, a pattern of bright spots or dark lines is produced on a screen placed perpendicular to the beam. Therefore, the wavelength of the light diffracted by the grating is 0.00072516 mm.

A pattern of this kind is called a diffraction pattern. A diffraction grating is a device that divides light into its component colors and produces diffraction patterns. It is used for analyzing light and determining the wavelengths of the different colors that make up the light.

The equation used to find the wavelength of light diffracted by a grating is

`d*sin(theta) = n*lambda`.

Here, d is the distance between two successive slits on the grating, theta is the angle of diffraction, n is the order of the diffraction, and lambda is the wavelength of the light. To determine the wavelength of the light in this case, we will use the given data and the above equation. The first-order diffraction angle is 34° and the diffraction grating has 750 slits/mm. Therefore, the distance between two successive slits on the grating is d = 1/750 mm = 0.001333 mm. The order of diffraction is 1.Using the above equation, we have`0.001333*sin(34) = 1*lambda`

Simplifying, we get `lambda = 0.00072516 mm`

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According to Wien's law, the color of the sun should be a bright white or slightly bluish-white. This is because Wien's law states that the peak wavelength of the sun's radiation is in the ultraviolet region, which corresponds to a color on the blue end of the visible spectrum.

However, since the sun emits radiation across a broad range of wavelengths, it appears as a bright white ball in the sky to the human eye.

Based on Wien's Law, the Sun's color is primarily white. Wien's Law helps determine the peak wavelength of radiation emitted by a black body, such as the Sun, based on its temperature. The Sun's surface temperature is around 5,500°C (9,932°F), which corresponds to a peak wavelength in the visible light spectrum, causing it to appear white to the human eye.

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Answer:

Explanation:

Using the formula

v = fλ

v is the speed

f is the frequency

λ is the wavelength

Given the following

v = 332m/s

Frequency is the number of oscillation completed in one second. Since 332 waves passes through a medium in one second, hence the frequency us 222 Hertz

From the formula

λ = v/f

λ = 332/332

λ = 1m

Hence the wavelength is 1m

Answer:

If this is what your asking?

Explanation:

The concept of time is self-evident. An hour consists of a certain number of minutes, a day of hours and a year of days. ... Time is represented through change, such as the circular motion of the moon around Earth. The passing of time is indeed closely connected to the concept of space