The student came up with a model that shows a loop of wire being rotated by some external force between two strong, permanent magnets. this causes the charges in the loop to flow.
a. True
b. False

Given:

The resistances are

The potential of the battery is

To find:

The current through the 4.0-ohm resistor

Explanation:

The equivalent resistance of the circuit is,

The current in the circuit is,

For the series combination, the same current flows through the 4.0-ohm resistance and the parallel combination of 5.0 and 9.0-ohm resistances.

Hence, the current through 4.0 ohm is 0.83 A.

Take into account that the magnitude of electric field at point P, produced by a charge q is given by:

where k (9*10^9 N/m^2C^2) is the Coulomb's constant, r is the distance from the charge to the point P and q is the magnitude of the charge.

An illustration of the given situation is shown below:

As you can notice, at point P the electric fields generated by each charge point to the negative charge. The signs of the charge determine the direction of the electric field.

The magnitude of each electric field is the same, due to the distance to each charge is the same and the magnitude of the charge is equal. Then, The magnitude of the total electric field is:

Hence, the electric field at a point midway the given charges is approximately 1.44*10^7N/C

Answer:

Reflected

Explanation:

During the process of reflection whatever that is sent forth e.g light comes back (reflects)

Answer:

transmitted

Explanation:

took quiz

Answer:

+52.97 J for the person, -52.97 J for the force of gravity

Explanation:

We have two phases: 1) vertical lift and 2) horizontal carrying.

In general, the work is given by force * distance if force and path are parallel. It is 0 if force and path are perpendicular. More complex form if force and path form an angle or if the force isn't constant.

The person is lifting an object, therefore at minimum we need to win gravity.

The force of gravity is, by definition, mass * gravity.

In this case, it's Fg = m * g = 4.5 kg * 9.81 m/s^2 = 44.14 N

This is the minimum force to lift that object. The problem isn't talking about surpassing this force, therefore we assume the person is lifting the object using exactly 44.14 N.

In the first phase, the force of gravity and the path are parallel, therefore the work is given by: force * distance:

W = Fg * d = 44.14 N * 1.2 m = 52.97 J

In the second phase, the person only needs to carry the block, therefore the force is the same as before, but, the force and the path aren't parallel: they're perpendicular. In this case, the work is 0 J.

Finally, the total work done by the person is: 52.97 J + 0 J = 52.97 J

About the force of gravity, It always has the same direction and intensity of the force of the person, therefore all previous observation and computations are valid exactly as they are, and the work done by the force of gravity is the same of that found just now: 52.97 J

If you also need signs (positive or negative work), about the person, his force and the path are of same sign, therefore his work is positive (+52.97 J). The force of gravity is of opposite sign, therefore its work is -52.97 J

Cool ocean current and a convergent boundary

An ocean current is a continuous flow of water in an oceanic direction; this implies that the water is not the same water, but that it is exchanged within the current at a comparable rate and direction. Temperature and water salinity are only two examples of the elements that influence currents. A continuous, directed flow of ocean water is known as an ocean current, and it is caused by a variety of factors acting on the water, such as wind, the Coriolis effect, breaking waves, cabeling, and variations in temperature and salinity.

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Explanation:

Approximately 5.9. Using Q=IT then T=Q/I so T=48/8.2=5.8536585366 Hope this helps

Answer:

The value of Force is

\(f = 0.031n\)

Explanation:

Greetings!!!

Mass(m)= 0.005kg

Acceleration (a)= 6.2m/s²

Force= ?

Firstly, recall the Newton's second law.

substitute known variables into the equation.

Solve for Force.

If you have any questions or unclear ideas tag on comments.

Hope it helps!!!

The force of the bullet is  0.031 N.

The force of the bullet is calculated by applying Newton's second law of motion as shown below.

Mathematically, Newton's second law of motion is given as;

F = ma

where;

The force of the bullet is calculated as follows;

F = 0.005 kg  x  6.2 m/s²

F = 0.031 N

Thus, the force of the bullet is a function of the mass and the acceleration of the bullet.

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Answer:

106.8

Explanation:

If you multiply 6 and 17.8, you'll get 106.8.

If that's wrong, my apology's !

Answer:

i dont know

Explanation:

Answer:

0.10 A

Explanation:

Answer:

the higher up an object is, the more potential energy it has

Explanation:

The maximum acceleration of a platform is 92.7 m/s².

What is an oscillation?

Oscillation is the process of any quantity or measure repeatedly varying about its equilibrium value in time. A periodic variation of a substance between two values or around its center value is another definition of oscillation.

We know,

The acceleration amplitude = \(a_{m}\) = ω²\(x_{m}\)

Here,

ω = angular frequency (ω=2\(\pi\)f)

There are 2\(\pi\) radians in one cycle, so we obtain:

\(a_{m}\) = ω²\(x_{m}\) = (2\(\pi\)f)²\(x_{m}\) = (2\(\pi\)(9.90Hz)²(0.024m) = 92.7 m/s².

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Answer:

Golfer B hits his golf ball at a higher rate of speed and with more force. This means that golfer B's ball will travel for a longer period of time and a longer distance due to newtons first law, where it says an object in motion stays in motion, with the same speed and in the same direction.

Explanation:

The angle between the initial velocity vector and the horizontal axis is called the launch angle or the angle of projection. It is denoted by the symbol θ (theta) and is measured in degrees or radians. The launch angle represents the direction in which an object is launched or projected into the air.

In projectile motion, the launch angle determines the trajectory and the shape of the projectile's path. The range, height, and time of flight of the projectile are all influenced by the launch angle. Different launch angles result in different projectile paths, such as a straight horizontal path, an upward arc, or a downward arc.

When the launch angle is 0 degrees, the initial velocity vector is completely horizontal, and the object is launched directly along the horizontal axis. As the launch angle increases, the initial velocity vector tilts upwards from the horizontal axis. At a launch angle of 90 degrees, the initial velocity vector is completely vertical, and the object is launched straight up.

The launch angle plays a crucial role in various real-life scenarios, such as ballistics, sports, and projectile motion calculations. By adjusting the launch angle, one can optimize the trajectory of a projectile to achieve specific goals, such as maximizing distance, achieving a desired height, or hitting a target accurately.

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Given that the progressive wave equation is represented by y=Asin2π(0.15t-0.1x). Let's find the period, amplitude, frequency, wavelength, and velocity.

The wave equation is represented by y=Asin2π(0.15t-0.1x). The standard wave equation can be written asy = Asin(kx-ωt + Φ)Where,k = wave numberω = angular frequencyΦ = phase angle for the given equation, k = 0.1 and ω = 0.15.Amplitude:

Amplitude = A = maximum displacement from the mean position.A = 1Frequency: Frequency is the number of complete oscillations made by a point on the wave in one second. It is denoted by f.f = ω/2πFrequency, f = 0.15/2π = 0.0238 HzPeriod: Period is the time taken by one complete oscillation.

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The following information is provided in the problem: A sled with a weight of 19.7 kg is pulled with a force of 42.0 N at an angle of 43.0° across ground where μ₁ = 0.130. We need to find out the normal force that is exerted on the sled.

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During the light reactions of photosynthesis, the molecule that is split to release oxygen is water (H2O). The process is known as photolysis or water splitting. Water molecules are broken down into hydrogen ions (H+), electrons (e-), and molecular oxygen (O2).

This process occurs in the thylakoid membranes of the chloroplasts, specifically in the photosystem II (PSII) complex.

The released oxygen is a byproduct of photosynthesis and is essential for supporting aerobic respiration and maintaining atmospheric oxygen levels.

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Bulb \#1 will use more power. The correct option is a.

The power consumed by an electrical device can be calculated using the formula:

Power = (Voltage)^2 / Resistance

In this case, we are assuming that the voltage drop across both bulbs is the same. Let's denote this voltage as V.

For Bulb #1, let's say its resistance is R1, so the power consumed by Bulb #1 is:

Power1 = V^2 / R1

For Bulb #2, let's say its resistance is R2, and since Bulb #1 has twice the resistance of Bulb #2, we can express it as R1 = 2R2. Therefore, the power consumed by Bulb #2 is:

Power2 = V^2 / R2

Comparing the two power expressions, we can see that Power1 will be larger than Power2 if R1 is greater than R2. Since R1 is twice as large as R2, Bulb #1 will have a higher resistance, and consequently, it will consume more power than Bulb #2.

Therefore, the correct answer is:

A. Bulb #1 will use more power.

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The statement "The total voltage dropped across a series-parallel circuit equals one-half of the supply voltage" is False.


In a series-parallel circuit, the total voltage dropped across the circuit components equals the supply voltage, not one-half of it.

This is due to Kirchhoff's Voltage Law, which states that the sum of the voltage drops around a closed loop in a circuit must equal the total supply voltage.

Thus, the statement "The total voltage dropped across a series-parallel circuit equals one-half of the supply voltage" is False.

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Question:

1) A tourist accidentally drops a camera from a 50.0 m high bridge. What is the speed of the camera as it hits the water? *

Answer:

28.0 m/s

the spring constant was found to be as follows 61.74 N/m.

explain about spring constant ?

The spring constant, denoted by k, is a measure of the stiffness of a spring and is defined as the force required to extend or compress the spring by a certain distance. The formula for the spring constant is:

k = F / x

where F is the force applied to the spring and x is the resulting displacement. In this case, the spring extends by 10 cm when a mass of 630 g is attached to it, which means the displacement x is 0.1 m and the force F can be calculated as:

F = m * g

where m is the mass in kilograms and g is the acceleration due to gravity, which is approximately 9.8 m/s^2. Converting the mass of 630 g to kilograms gives:

m = 0.63 kg

So, the force F is:

F = 0.63 kg * 9.8 m/s^2 = 6.174 N

Now we can calculate the spring constant k:

k = F / x = 6.174 N / 0.1 m = 61.74 N/m

Therefore, the spring constant is 61.74 N/m.

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Answer:

To solve for the voltage drop at V₁, we can use Ohm's law, which states that the voltage drop across a resistor (V) is equal to the current (I) flowing through it multiplied by the resistance (R) of the resistor.

V = I * R

The information given in the question is as follows:

VT = 101.00 V

T = Unknown

R₁ = Unknown

V₁= Unknown

I₁=Unknown

R₂= Unknown

V₂= 33.00 V

I₂ = 12.00 Amperes

R₂ = Unknown

V₃ = 37.00 V

I₃ = 13.00 Amperes

R₃ = 12.00 Ohms

The first step is to calculate the current flowing through the circuit by using the formula Power= Voltage * Current

P = VT

I = P/VT = 101/101 = 1 Amperes

Now we can use Ohm's Law to find the voltage drop across R1:

V₁ = I * R₁ = 1 * R₁

To find the resistance of R1, we can use the formula:

T = V₁ + V₂ + V₃

R₁ = (T - V₂ - V₃) / I

Substituting the values,

101 = V₁ + 33 + 37

V₁ = (101 - 33 - 37) = 31 Volts

So, the voltage drop at V₁, which is the voltage drop at resistor one, is 31 Volts.

Explanation:

Answer: UV rays, either from the sun or from artificial sources like tanning beds, can cause sunburn. Exposure to UV rays can cause premature aging of the skin and signs of sun damage such as wrinkles, leathery skin, liver spots, actinic keratosis, and solar elastosis. UV rays can also cause eye problems.

Explanation: Uv means ultraviolet

Momentum is never created or destroyed. It is conserved.

The cue stick gave the cue ball all the momentum there is on the table.  There's nothing on the table that can pour in any more momentum.

After the strike, with 15 or 16 balls rolling every which way around the table, the total momentum of all of them combined will be the same as the cue ball's momentum right now, before the strike.

Answer:

216 J

Explanation:

h = 1.8

a = 9.8

m = 12.2

GPE = HAM = 216

The gravitational potential energy of a suitcase weighing 120 N sits on a counter 1.8 m high in the airport is 216 Joules.

Gravitational potential energy is the energy which is present inside the body of an object which is at rest. This energy is transformed into kinetic energy as soon as the object changes its state of rest to motion.

The gravitational potential energy of an object can be calculated through the formula:

GPE = m × g × h

where, GPE = Gravitational Potential Energy,

m = mass of the object,

h = height covered by the object

w = m × g

where, w = weight of the object

So, the gravitational potential energy of the object is:

GPE = 120 × 1.8

GPE = 216 Joules

Therefore, the gravitational potential energy of the suitcase is 216 Joules.

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Answer:

most likely just 1

Explanation:

I sucked at sig figs in middle school, in fact it was the lowest test grade i ever received, but it is relatively simple.

because there is only one sig fig involved in each number, there can't be multiple sig figs here. 3000/500=6

500/3000=2(round up from 1.66666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666) you get the point.

ANSWERS

(a) Year - Population

• 1980 - 101,240

• 1990 - 142,949

• 2000 - 201,843

• 2010 - 285,000

(b) 2016

EXPLANATION

(a) The population (in thousands) each year is given by,

If t = 1 represents year 1971, then for each year we have to find the difference between the year and 1970.

For year 1980,

The population is 101,240.

For year 1990,

The population is 142,949.

For year 2000,

The population is 201,843.

For year 2010,

The population is 285,000.

(b) In this problem we're given the population 350,000 and we have to find in what year the county will reach that population. In other words, we have to find t and then add that to 1970 to find the year.

Let's solve for t,

Divide both sides by 71.7,

Apply natural logarithm to both sides,

Divide both sides by 0.0345,

And finally replace P and solve. Remember that P is in thousands of years, so we have to replace it by 350,

This is 46 years after 1970,

Let's see what's the population in 2016 to check the answer,

It is a bit more than 350,000. But let's see what's the population in 2015,

In 2015 population of the county won't reach 350,000. Thus, the county will have a population of 350,000 in 2016

Answer:

Difference : Balloon framing go through from foundation to top floor while Platform do not

advantages and disadvantages

Balloon framing : It has less vertical shrinkage  ( disadvantage )

platform framing : It has more vertical shrinkage and fire stops ( advantage )

platform framing : It is easier and safer to use

Reason for platform framing :

Due to these advantages Platform framing has become a better choice

Little added fire stopping is required in platform framing because of double tap plate present which can act as as a fire stop

Steel beam/ glue laminated wood beam is preferred at foundation level because wood beam under the ground will most likely shrink over time

Explanation:

Differences : Balloon framing a form of building houses using a special kind of timber construction its studs start from the foundation and go to all the way to the last floor while in Platform framing the studs are interrupted by floor platforms ( i.e. they do not go through like in Balloon framing )

advantages and disadvantages

Balloon framing : It has less vertical shrinkage  ( disadvantage )

platform framing : It has more vertical shrinkage and fire stops ( advantage )

platform framing : It is easier and safer to use

Reason for platform framing :

Due to these advantages Platform framing has become a better choice

Little added fire stopping is required in platform framing because of double tap plate present which can act as as a fire stop

Steel beam/ glue laminated wood beam is preferred at foundation level because wood beam under the ground will most likely shrink over time

Answer:

42000N

Explanation:

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