after a supernova for a star with a core mass greater than 2 times the mass of the sun, the stellar leftover will not be a neutron star, it will be a

For a 240-volt circuit with an 80-ohm resistor attached across it: 240 volts divided with 80 ohms equals current (I). 30 amps represents a unit of current (I).

So we have the value of v, which is equal to 24 volts, and the number of r. This is equivalent to 12 home, thus we have the value of i, which is equal to 2 ampere. So that's the solution, alternatively you can say that the voltage inside the wiring is 2.

Ohm's Law (E = Ar) is a ratio used in electrical circuits to determine the connection among voltage, current, and resistance. The entire formula is E = I × R, where E equals volts, I equals flow (in amp), and R equals resistance.

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Answer:

d

Explanation:

because ik igvddhh56yfdsaw66 u77rfgtd gyy f music nutren

Answer:

Explanation:

Given

Acceleration a = 1.0m/s²

Displacement S = 1.0m

Required

Time t taken by the leaf to displace

Using the equation of motion

S = ut+1/2at²

Substitute

1.0 = 0+1/2(1)t²

1 = t²/2

Cross multiply

t² = 2

t = ±√2

t = 1.41secs

It takes the leaf to 1.41s to displace by 1m upward

Answer:

36°

Explanation:

let n=10 images

n=360/theta

10=360/theta

theta=360/10

theta=36°

hope you help this

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Answer:

The continuity equation says that if charge is moving out of a differential volume (i.e., divergence of current density is positive) then the amount of charge within that volume is going to decrease, so the rate of change of charge density is negative.

Explanation:

I have included a picture

He is going at the velocity of 40m/s even though he started at rest.

What is acceleration?

Acceleration is the rate at which velocity changes with respect to both speed as well as distance. If an object speeds up or down and is moving in a straight line, then the object is said to be accelerated. In a circular motion, the speed remains constant but the body is accelerated as the direction keeps on changing. The SI Unit is meter per second m/s2

Acceleration= 10m/s2

Initial velocity= 0m/s as the body started at rest.

Distance = 80 m

v2= u2+ 2aS

  = 02+ 2 10 80

  = 1600

v= 40m/s

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The value of x = -6.29 m

The center of gravity of the three particles X = m₁x₁ + m₂x₂ + m₃x₃/(m₁ + m₂ + m₃)

Given that the center of gravity is located at the origin, X = 0 m and m₁ = 5.00 kg, m₂ = 4.00 kg , m₃ = 7.00 kg, x₁ = 4.00 m, x₂ = 6.00 m, and x₃ = x m

Substituting the values of the variables into the equation, we have

X = m₁x₁ + m₂x₂ + m₃x₃/(m₁ + m₂ + m₃)

0 = 5.00 kg × 4.00 m + 4.00 kg × 6.00 m + 7.00 kg × x/(5.00 kg + 4.00 kg + 7.00 kg)

0 = 20.00 kgm + 24.00 kgm + 7.00x kgm/16.00 kg

Cross-multiplying, we have

20.00 kgm + 24.00 kgm + 7.00x kgm = 0

44.00 kgm + 7.00x kgm = 0

44.00 kgm = -7.00x kgm

Divide through by -7.00 kg, we have

x = 44.00 kgm/-7.00 kg

x = -6.29 m

So, the value of x = -6.29 m

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The evidence that scientists have that Mars used to have a magnetic field is this:

B. The atmosphere of Mars contains evidence of a magnetosphere.

Scientists base whatever conclusions they reach on a subject matter on evidence. To reach their conclusion that mars had a magnetic field that protected it, they used a device known as an orbiter to measure the magnetic strength of mars.

Their discovery showed that the magnetic field on Mars was ten times as strong as the earth's field. This gives evidence of the fact that at a certain time, there was a strong magnetic field on Mars.

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Answer:

all the body parts work together to make your body function properly, so therefore, a lot of other body parts will break down

To solve the problems in Example 4.2 using the constant-voltage-drop (vd = 0.7 V) diode model, we need to apply the diode equation in this model and consider the voltage drop across the diode as a constant value of 0.7 V.

Example 4.2 deals with a simple diode circuit connected to a voltage source and a resistor. Let's consider the two scenarios provided in the example:Scenario 1:

A diode is connected in series with a resistor across a 5 V voltage source.To analyze this circuit using the constant-voltage-drop diode model, we assume that the diode is forward-biased, allowing current to flow through the circuit. The voltage drop across the diode is considered constant at 0.7 V.Since the voltage source is 5 V and the voltage drop across the diode is 0.7 V, the voltage across the resistor (VR) is given by:VR = Vsource - Vd

VR = 5 V - 0.7 V

VR = 4.3 VUsing Ohm's Law, we can determine the current flowing through the resistor:I = VR / RGiven the resistor value (R), substitute it into the equation along with the calculated VR to find the current (I).Scenario 2:

A diode is connected in parallel with a resistor across a 12 V voltage source.In this scenario, we assume that the diode is reverse-biased, causing negligible current to flow through the diode. Therefore, we can consider the voltage across the diode to be zero.The voltage across the resistor (VR) is equal to the voltage source voltage since the diode does not conduct significant current:VR = Vsource

VR = 12 VAgain, use Ohm's Law to calculate the current flowing through the resistor:I = VR / RSubstitute the resistor value (R) along with the calculated VR to find the current (I).By applying the constant-voltage-drop diode model with a voltage drop of 0.7 V, you can analyze and solve the problems in Example 4.2 for both forward and reverse-biased diode configurations.

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A voltage spike occurs when a 140-w lightbulb is coupled to a 120-v source, which results in the estimate Resistance results in a 36% increase in power as a percentage.

The amount of opposition any object applies to the flow of electric current is referred to as resistance. The circuit uses a resistor, an electrical component, to provide that specific level of resistance. The resistance of an object is calculated using the equation R = V I.

The sources of a circuit's power are;

P = V²/R

Now;

P = 140 W

V = 120 V

R =V²/P

R =(120)²/140

R =250Ω

The power becomes; when the voltage is increased to 132 V.

P= (136)²/ 250

P = 64.4 W

Power fluctuation = 64.4 W - 0 W/140 W ×100/1

= 36%

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Equipment that is operated by a fluid under pressure, such as water or oil, is known as a hydraulic system. These systems use pressurized fluid to transmit power and perform various tasks, like lifting heavy loads or operating machinery. Common examples of hydraulic equipment include excavators, car jacks, and hydraulic brakes.

The type of equipment that is typically operated by a fluid that is under pressure, such as water or oil, includes hydraulic equipment and pneumatic equipment.

These types of equipment use the pressure of the fluid to power various mechanisms and perform tasks, such as lifting heavy objects or moving machinery.

Examples of hydraulic equipment include hydraulic presses, cranes, and excavators, while examples of pneumatic equipment include air compressors, drills, and pumps.

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1. dependant variable

2. graph

3. model

4. experiment

6. scientific law

9. hypothesis

11. independent variable

12. theory

14. volume

15. society

Answer:

 w = 4.712 10⁻³ rad / s

Explanation:

For this exercise, the time it takes for the bullet to travel the distance of 2R must be equal to the time that the hole must travel half a circle.

Let's start by calculating the time it takes for the bullet, which is going at constant speed.

         v = x / t

         t = x / v

         t = 2R / v

         t = 2 0.10 / 300

         t = 6.666 10⁻⁴ s

As they ask that a single hole is formed in this time, it must be rotated half a circle, that is, θ =π rad, for which we use the angular scientific relations, where the shell has constant angular velocity

          w = θ / t

          w = π / 6,666 10⁻⁴

          w = 4.712 10⁻³ rad / s

(a) A = B × r is a vector potential for B, where r = {x, y, 0}.

(b) The flux through a surface S can be calculated as Φ = ∫B·dA, where B is the magnetic field and dA is an infinitesimal area vector perpendicular to the surface.

(a) To verify that A = B × r is a vector potential for B, we need to show that ∇ × A = B.

Using the cross product property, we have ∇ × A = ∇ × (B × r). Applying the vector identity (A × B) × C = B(A · C) - C(A · B), we get ∇ × (B × r) = B(∇ · r) - r(∇ · B).

Since ∇ · r = 0 (as r = {x, y, 0}), and ∇ · B = 0 (as B has a constant magnitude in the z-direction), we find that ∇ × A = B, verifying A = B × r as the vector potential for B.

(b) The flux through a surface S can be calculated as Φ = ∫B·dA, where B is the magnetic field and dA is an infinitesimal area vector perpendicular to the surface.

Given that B has a constant strength b teslas in the z-direction, the flux through surface S will be Φ = ∫B·dA = ∫(0, 0, b) · (dxdy) = b∫dxdy = bA, where A is the area of the surface S.

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According to the problem the speed of the electrons is 2.7 * 10^7 m/s.

Electrons are the smallest particles of matter and are part of an atom. They carry a negative charge and are found in the nucleus of an atom, orbiting around the nucleus in shells or energy levels. Electrons are important for chemical bonding, as they are the particles that form when atoms bond together. They also play a role in the transfer of energy, as they can move from one atom to another.

The speed of the electrons in the beam can be calculated using the equation v = √(2*E/m),
where E is the energy of the electrons (given by E = qV,
where q is the charge of the electron and V is the potential difference) and m is the mass of the electron.

Using the given values, we get v = √(2 * 1.6 * 10^-19 * 30 * 10^3 / 9.1 * 10^-31) = 2.7 * 10^7 m/s.

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Answer:

The time taken for the daredevil to travel the 50 m horizontally is 2.83 s.

Explanation:

Given;

angle of projection, θ = 45°

initial speed of the projectile, u = 25 m/s

horizontal distance traveled by the projectile, x = 50 m

The time taken for the daredevil to travel the 50 m horizontally is calculated as;

\(t =\frac{X}{u_x}\)

where;

\(u_x\) is the horizontal component of the velocity = uCosθ

\(t =\frac{X}{u Cos \ \theta} \\\\t =\frac{50}{25 \times Cos(45)} \\\\t= \frac{50}{17.678} \\\\t = 2.83 \ s\)

Therefore, the time taken for the daredevil to travel the 50 m horizontally is 2.83 s.

Answer:C

Explanation:

The sun heats land quickly and as the warm air rises, cool air comes in to take it place.

Answer:

C

Explanation:

1)Average speed = 8y/s

2)Average velocity= 0.88y/s

Average speed depends on the distance whereas average velocity depends on the displacement . Speed is a scalar quantity while average velocity is a vector quantity.

Let us assume, L=100 yards as the length of the football field.

1)We know that average speed is the total distance covered by the player divided by the time taken.

Total distance covered to go from one goal line to the other and then back to the 20-yards line is:

s= 100y + (100-20)y

= 100y+ 80y

=180y

Given, time t=22.5 s,

Now, the average speed of the player is:

v= s/t

= 180y/22.5

= 8 y/s

2)To calculate the magnitude of average velocity, we have to consider the direction and sign of the velocity.

In the beginning, the player goes from one goal line to the other one, so he covers 100 y. But, in the second part of the motion he goes back by 80 y. Hence, the net displacement of the player is:

s= 100y-80y= 20y

now, the average velocity is:

v= s/t

=20/22.5

= 0.88 y/s.

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Answer:

43.58kg

Explanation:

The equation F=ma will help here.

F=ma

523N=m(12m/s^2)

43.58kg=m

Answer:

I'm sorry, but as an AI language model, I don't have a PE textbook to access the "Healthy Lifestyle Questionnaire" on page 413. However, I can tell you that the questionnaire is a self-assessment tool designed to help individuals evaluate their current lifestyle habits and identify areas for improvement. It covers topics such as physical activity, nutrition, stress management, and sleep. The score obtained from the questionnaire can provide insight into one's overall health and well-being. If you have access to the questionnaire, I encourage you to take it and reflect on your score to identify areas where you can make positive changes to improve your health and well-being.

The questionnaire on healthy lifestyle will be used to assess an individual's lifestyle habits such as including exercise, nutrition, sleep, stress and substance use.

This questionnaire can reveal information about people lifestyle habits because its provids insight into areas where changes need to be made to improve overall health and well-being.

When a respondent answers question about issues like exercise, nutrition, the researchers can gain understanding of their current habits and identify areas where they may need to make changes.

Therefore, the information derived therein can then be used to develop a personalized plan for improving health and achieving wellness goals.

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Answer:

about 301 mph 5.7 west of north

Explanation:

The resultant velocity of the jet is 301.496 m/s which is a resultant of two velocities in north direction and west direction.

The resultant velocity of an object is the sum total of its individual vector velocity components.

The formula for the calculation of resultant velocity in the straight line is:

V = V₁ + V₂+....

In the given condition, a jet begins a flight along north at 300 miles per hour and 30 miles per hour due west.

The resultant velocity of the jet can be calculated through Pythagoras theorem:

Resultant velocity = \(\sqrt{(V1)^{2} + (V2)^{2}\)

where, V1 = Velocity due North

V2 = Velocity due West

Resultant velocity = \(\sqrt{(300)^{2} + (30)^{2}\)

Resultant velocity = \(\sqrt{90000 + 900\)

Resultant velocity = \(\sqrt{90900\)

Resultant velocity = 301.496m/s

Therefore, the resultant velocity of the jet is 301.496m/s.

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Answer: solar power converters

Answer:

Outlets besides a battery

Answer:

a) Eg = 3,060.72 j

b) Ek = 2,080 j

c) Etotal = 5,140.72 j

Explanation:

The given parameters are;

The mass of the person, m = 65 kg

The height of the person, h = 4.8 m

The speed of the person, v = 8.0 m/s

a) The gravitational potential energy, \(E_g\) = m·g·h

Where;

g = The acceleration due to gravity ≈ 9.81 m/s²

∴ Eg = 65 kg × 9.81 m/s² × 4.8 m = 3,060.72 j

Eg = 3,060.72 j

b) The kinetic energy, Ek = 1/2·m·v²

∴ Ek = 1/2 × 65 kg × (8.0 m/s)² = 2,080 j

Ek = 2,080 j

c) The constant total Mechanical Energy, Etotal = Eg + Ek

∴ Etotal = 3,060.72 j + 2,080 j = 5,140.72 j

Etotal = 5,140.72 j.

Answer:

The chemical and physical processes that change objects on Earth's surface over time are called weathering .  Over thousands of years, weathering breaks up rocks into smaller pieces.

b. Mechanical weathering,Chemical makeup,Surface area,clay,ice wedging expands, abrasion

   there all in order btw

Answer:

D

Explanation:

Answer:

it is the same substance because it didn't change the process of that it was it just changed its state for would to liquid