a car travels 50.0 m at a rate of 10.0 m/s, s. it then travels 200. m at a rate of 20.0 m/s, e. what is its average speed? its average velocity?

Answer:

You have no graph on the post.

Recall that we previously stated that the electric field is a quantity that is independent of the test charge in a specific system, allowing us to compute the force that would be exerted on any test charge.

(In the lack of more information, the test charge is presumed to be positive.) We briefly defined a field for gravity, but unlike the electric force, which can be either attractive or repulsive, gravity is always attractive. Therefore, even though potential energy in a gravitational system is perfectly adequate, it is useful to define a quantity that enables us to determine the work on a charge independent of the charge's magnitude.

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Answer:Speed is the time rate at which an object is moving along a path

Velocity is the rate and direction of an object's movement.

Explanation:

Hope it helps

Answer:

Initial y-component of speed

Vy = 28 * sin 30 = 14 m/sec vertically

1/2 m Vy^2 = 2 m g h    conservation of energy of y-component

h = Vy^2 / (2 * g) = 14^2 / (2 * 9.8) = 10 m

The force constant of the spring is 200.696 N/m & The height the object achieves when the spring releases its energy is 2.5087 m

The spring constant is the force needed to stretch or compress a spring, divided by the compressive or expansive distance. It's used to determine stability or instability in the spring, and therefore the system it's intended for. we know,

F = kx

Therefore,

k = F/x

We also know that the force being exerted on the spring is equal to the mass of the object. Hence, F = mg = 5.13 * 9.8 N = 50.174 N and we know compression due to the mass is 0.25m. Therefore,

K = 50.174/0.25 N/m

K = 200.696 N/m

Therefore, The Spring Constant is 200.696 N/m

On release, the spring potential energy gets converted to kinetic energy. Hence, on release, the height attained by the object is given by:

h = \(1/2 kx^{2}\)

We know that k=200.696 N/m and x=0.25 m. Therefore the height is:

h = \(1/2 (200.696 N/m)(0.25 m)^{2}\)

h = 2.5087 m

Therefore, the force constant of the spring is 200.696 N/m & The height the object achieves when the spring releases its energy is 2.5087 m

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Answer:Moon phases are determined by the relative positions of the Moon, Earth, and Sun.

Explanation:

Instead, the Moon's phase depends only on its position relative to Earth and the Sun. The Moon doesn't make its own light, it just reflects the Sun's light as all the planets do.

The amount of time required to generate energy on the exercise bike is almost impractical, and other sources of energy should be considered.

Let's start with calculating the amount of energy that the AC unit consumes in a day.

Power = Voltage x Current

The power consumption of the AC unit is 3500 Watts.

Time = Power / Voltage x Current (Ohm's Law)

Assuming that your home uses 120 volts AC, the amount of current needed is as follows:

Current = Power / Voltage

= 3500 W / 120 V

= 29.16 A.

The time required to operate the AC unit for four hours per day is:

Time = Power / Voltage x Current

= 3500 W x 4 hr / 120 V x 29.16 A

= 12 hours.

Now, if you can generate a consistent power of 300 watts on the exercise bike, the amount of time you'd need to work out each day to keep the AC unit running for four hours would be:

Time required for the exercise bike = Time for AC Unit x (Power required by AC unit / Power generated by exercise bike)

Time required for the exercise bike = 4 hours x (3500 W / 300 W)

Time required for the exercise bike = 46.7 hours.

Using an exercise bike to generate electricity is a great idea, but it would be difficult to generate enough energy to keep large home appliances running, such as a central AC unit.

In this case, the amount of time required to generate energy on the exercise bike is almost impractical, and other sources of energy should be considered.

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Answer:

I think white is the colour of star A.

Answer:

yellow

Explanation:

a ) The slowest and fastest object are object 2 and object 1 respectively

b ) In a vacuum chamber all objects will fall at the same time

c ) In normal conditions, a golf ball would land first.

a ) From the data taken from the table,

Object 1 lands after 1.1 s

Object 2 lands after 1.8 s

Object 3 lands after 1.3 s

Object 4 lands after 1.1 s

Eventhough object 1 and 4 land at same time, at 1 s mark object 4 has more height than object 1. So object 1 would land first

b ) If conducted in a vacuum chamber, there will be no air resistance,. So all the objects will fall at the same time.

c ) In normal conditions, there will be air resistance. So air resistance will be larger in the object with larger surface area. Feather has a larger surface area than a golf ball. So feather will fall slower than the golf ball.

Therefore,

a ) The slowest and fastest object are object 2 and object 1 respectively

b ) In a vacuum chamber all objects will fall at the same time

c ) In normal conditions, a golf ball would land first.

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Explanation:

Given that,

The mass of an object, m = 1 kg

The mass of Earth, \(m_e=6\times 10^{22}\ kg\)

The mass of Moon, \(m_m=7.4\times 10^{22}\ kg\)

The distance between the two bodies, \(d=3.8\times 10^5\ km =3.8\times 10^8\ m\)

The gravitational force between the object and the earth,

\(F=\dfrac{Gmm_e}{d^2}\\\\=\dfrac{6.67\times 10^{-11}\times 1\times 6\times 10^{22}}{(3.8\times 10^8)^2}\\\\=2.77\times 10^{-5}\ N\)

The gravitational force between the object and the Moon,

\(F=\dfrac{Gmm_m}{d^2}\\\\=\dfrac{6.67\times 10^{-11}\times 1\times 7.4\times 10^{22}}{(3.8\times 10^8)^2}\\\\=3.41\times 10^{-5}\ N\)

Hence, this is the required solution.

The frequency does the other car hear after they pass each other is 631.8 Hz.

The frequency heard by the second car is calculated as follows;

f = f'(v/v - vs)

where;

f = 595(343/343 - 20)

f = 631.8 Hz

Thus, the frequency does the other car hear after they pass each other is 631.8 Hz.

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Answer: Yes

Explanation: It has space in its valence shell for an additional electron.

The answer to this question is yes, a neutral hydrogen atom does have an attraction for an additional electron. This attraction arises from the fact that the positively charged proton in the nucleus of the atom attracts negatively charged electrons. When an additional electron is brought near the hydrogen atom, it will be attracted to the positively charged proton in the nucleus. The attraction between the proton and the electron is quantified by Coulomb's law.

Neutral hydrogen atoms consist of a single proton in the nucleus and a single electron in the outer shell. The electron is negatively charged, while the proton is positively charged. Thus, the electron and the proton are attracted to each other by the electromagnetic force, creating a stable neutral atom. The question asks whether the neutral hydrogen atom has an attraction for an additional electron.

Coulomb's law states that the force between two charged particles is proportional to the product of their charges and inversely proportional to the distance between them. In the case of the hydrogen atom, the force between the electron and the proton is given by:

F = kq1q2/r^2

where F is the force, k is Coulomb's constant, q1 is the charge of the electron, q2 is the charge of the proton, and r is the distance between them.

Since the electron has a negative charge and the proton has a positive charge, their product (q1q2) is negative, which means the force between them is attractive. As the distance between the electron and the proton decreases, the force between them increases. Therefore, when an additional electron is brought near the hydrogen atom, it will be attracted to the positively charged proton in the nucleus.

However, there is a limit to how many electrons can be added to a hydrogen atom. When a second electron is added, it will be repelled by the first electron, and the repulsive force between the two electrons will become stronger than the attractive force between the electron and the proton. This means that adding a second electron to a hydrogen atom requires more energy than adding the first electron. In fact, the energy required to add a second electron is so high that it is unlikely to occur under normal conditions. Therefore, a neutral hydrogen atom can attract an additional electron, but it can only form a negative ion with a single additional electron.

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Answer: Wave a the first answer is right

Brainliest.

Explanation:

Two consequences of the refraction of light are:

a) Change in Direction

b) Dispersion of Light

Two consequences of the refraction of light are:

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The force f (in n) the person is exerting on the mower is 18 n.

The force of friction opposing the motion refers to the force that acts in the opposite direction to the motion of an object and makes it harder to move.

According to the given statement, the force of friction opposing the motion is equal to the force f (in N) the person is exerting on the mower.

This indicates that the person's pushing force must be equal to the force of friction opposing the motion for the mower to move at a constant speed.

Using the above information, we can calculate the force f (in N) that the person is exerting on the mower as 18 n since it is equal to the force of friction opposing the motion.

Therefore, the person must push with a force f (in N) of 18 n to overcome the friction and maintain a constant speed for the mower.

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Answer:

Friction or tension

Explanation:

Friction stops an object from moving in the presence of force

The Doppler Effect is a phenomenon observed when there is relative motion between the source of a wave and the observer of the wave.

It is commonly experienced with sound waves, such as the change in pitch of a siren of a moving ambulance. When the source moves towards the observer, the frequency of the sound waves heard by the observer increases, resulting in a higher pitch.

Conversely, when the source moves away from the observer, the frequency of the sound waves heard by the observer decreases, resulting in a lower pitch. This effect is caused by the compression or expansion of the sound waves due to the relative motion between the source and the observer.

The Doppler Effect is also observed with electromagnetic waves, such as light waves. It is used in various applications, including astronomy, to measure the motion of stars and galaxies.

By analyzing the Doppler shift in the light emitted by these celestial bodies, astronomers can determine whether they are moving towards or away from us, and at what speed.

Overall, the Doppler Effect is a fundamental concept in physics that helps us understand the behavior of waves in relation to relative motion. It has practical applications in a variety of fields, including medicine, meteorology, and remote sensing.

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Answer: The only advantage cutting crops with a sickle is that its very effective for cutting lodged crops.

a) The P-V diagram for the process is shown below:

      C

      |

      |   B (2V, 300 kPa)

      |   |

P     |   |

      |   |

      |   |

      |   |

      |   |

      |   |

      |   |

      |_ |________

          V (m³)

           A (V, 300 kPa)

b) The total work done is 600 KJ.

c) The change in internal energy of the gas during the entire process is 61.85 kJ.

a. The process can be divided into two steps:

Step 1: Expansion at constant pressure (process AB in the diagram)

Step 2: Heating at constant volume (process BC in the diagram)

b. The work done by the gas during the entire process can be calculated by the area under the P-V curve:

W = W_AB + W_BC

W_AB = P(V_B - V_A) = (300 kPa)(2V - V) = 600 kJ

W_BC = 0 (constant volume process)

W = 600 kJ

c. The change in internal energy of the gas during the entire process can be calculated using the first law of thermodynamics:

ΔU = Q - W

ΔU = Q_AB + Q_BC - W

Q_AB = mCpΔT = (2 kg)(2.5 kJ/kg.K)(50 K) = 250 kJ

Q_BC = mCvΔT = (2 kg)(0.75 kJ/kg.K)(273 K) = 410.85 kJ

ΔU = (250 kJ + 410.85 kJ) - 600 kJ = 61.85 kJ

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Two objects attract each other gravitationally with a force of:

\(F = G \times (m1 \times m2) / r^2\).

The force of attraction between two objects has an inverse relationship to their squared distance, according to Newton's law of universal gravitation. It varies in direct proportion to the product of the object masses.

Gravity is a fundamental interaction that causes all objects with mass or energy to attract one another.

Two objects attract each other gravitationally with a force of:

\(F = G \times (m1 \times m2) / r^2\).

where F is the gravitational force between the two objects in Newtons, m1 and m2 are the masses of the two objects in kilograms, r is the distance between the centers of the two objects in meters, and G is the gravitational constant, which has a value of approximately \(6.674 \times 10^-11 Nm^2/kg^2.\)

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Answer:

True

Explanation:

because their is friction(e.g take a ruler rub it in your hair then put it on top of a piece of paper on the table then u will see the process)among the two objects.

Answer:

370N

Explanation:

We can use the formula [ f = mg ] to solve.

f = (100)(3.7)

f = 370N

Best of Luck!

The thunder and lightning happen at the same time but sound waves move more slowly than light waves. So if it takes longer for the sound to reach you, therefore the storm is farther away.

A sound wave is described as the pattern of disturbance caused by the movement of energy traveling through a medium such as air, water or any other liquid or solid matter as it propagates away from the source of the sound.

Sound waves are divided into three categories and they :

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Voltage drop across the television is approximately 117.07 volts. Since the wires and television form a series circuit, we can simply add the resistance values:

\(R_total = 2.5 d + 10 ohms\)

Let's assume that the voltage in the circuit is 120 volts and the resistance of the television is 10 ohms.

The total resistance of the circuit can be found by adding the resistance of the wires and the resistance of the television. However, we need to convert the wire resistance from deciohms (d) to ohms:

\(2.5 d = 2.5 *0.1 ohms = 0.25 ohms\)

So, the total resistance of the circuit is:

\(R_total = 0.25 ohms + 10 ohms\)

\(= 10.25 ohms\)

We can calculate the current (I) in the circuit by dividing the total voltage  by the total resistance:

\(I = V_total / R_total\)

\(I = 120 volts / 10.25 ohms\)

\(= 11.707 amps\)

Now we can use Ohm's Law to calculate the voltage drop across the television

\(V_television = I * R_television\)

\(= 11.707 amps * 10 ohms\)

\(= 117.07 volts\)

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Alice is weightless because she is in free fall.

Free-fall occurs when an object is experiencing the force of gravity but is not experiencing any other forces, such as air resistance. Because Alice is in a spacecraft, air resistance is not a factor, so she is essentially in a vacuum.

When an object is in a vacuum, the only force acting upon it is gravity. Therefore, Alice is in free fall and is experiencing weightlessness. This is in contrast to you, who is experiencing 1g of acceleration due to the force of the engine of your spacecraft.

This force is greater than the force of gravity, so you are not in free fall, and thus you are feeling the effects of the gravitational field.

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(c) The potential energy at A is the same as the kinetic energy at B. So

m g h = 1/2 m v²

where m is the mass of the object at the end of the pendulum, g is the magnitude of the acceleration due to gravity, h is the height of the object at point A relative to B, and v is the object's maximum speed. So

(3.8 kg) (9.80 m/s²) h = 140 J

h = (140 J) / ((3.8 kg) (9.80 m/s²))

h ≈ 3.8 m

(f) You know the kinetic energy at B, so just solve for v :

140 J = 1/2 (3.8 kg) v²

v² = (280 J) / (3.8 kg)

v² ≈ 73.684 m²/s²

v ≈ 8.6 m/s

Answer

Explanation: Ok so I had a lot of trouble with this too. What I did was get some butter beans and put them under my pillow (If you don't have butter bens then butter works but must be unsalted country croks butter. I can't believe it's not butter will not work because the spirit people know and will put a spell on you. Then you get a 8lb. sweet potato and tie it to a piece of tweed and hand it on your fan at the highest setting until it flies out the string. Where ever it lands is where you sleep. Sleep with the potato where it landed. 30 minutes before you go to bed brush your teeth with a special drink.

Drink Ingredients:

2 spinach leaves

1 ounce of maple syrup

3 spoons of coco butter

1 rabbit ear

7 bear hairs

2 toe nail clipping form your dad (If you don't have one then I would give up)

When you drink this and go to sleep dream about the magical elves and eaves that will come to you in your dream. They'll give ask you a question where you will answer "Yes papas fritas"

A large disformed mutant will appear. Don't be afraid. Approach with confidence.

After that a glowing door will appear and BAM you're shifting.

*Pls note this could end in serious harm and danger I do not recommend attempting as it can result in death, a coma, or other injury. Have a Beautiful day :)

The dot product is 25, the angle is \(\theta = cos^{-1} \frac{25}{\sqrt{35} \times \sqrt{21}}\), the cross product is 1i + (-6)j + (-7)k, and the area of the parallelogram spanned by vectors A and B is \(\sqrt{86}\).

Given,

A = 5i + 3j + k

B = 4i + j + 2k

i. Dot Product (A · B):

The dot product of two vectors A and B is given by the sum of the products of their corresponding components.

\(A.B = (A_x \times B_x) + (A_y \times B_y) + (A_z \times B_z)\\A.B = (5 \times 4) + (3 \times 1) + (1 \times 2) \\= 20 + 3 + 2 \\= 25\)

ii. Angle between vectors A and B:

The angle between two vectors A and B can be calculated using the dot product and the magnitudes of the vectors.

\(cos\theta = (A.B) / (|A| \times |B|)\\\theta = \frac{1}{cos} ((A.B) / (|A| \times |B|))\\A = \sqrt{(5^2 + 3^2 + 1^2)} =\\ \sqrt{35}\\B = \sqrt{(4^2 + 1^2 + 2^2)} \\= \sqrt{21}cos\theta = \frac{(A.B) / (|A| \times |B|)\\\theta = \frac{1}{cos} \frac{25}{\sqrt{35} \times \sqrt{21}}}\)

iv. Cross Product (A × B):

The cross product of two vectors A and B is a vector that is perpendicular to both A and B and its magnitude is equal to the area of the parallelogram spanned by A and B.

\(A\times B = (A_y \timesB_z - A_z \timesB_y)i + (A_z \timesB_x - A_x \timesB_z)j + (A_x \times B_y - A_y \times B_x)k\\A\times B = ((3 \times 2) - (1 \times 1))i + ((1 \times 4) - (5 \times 2))j + ((5 \times 1) - (3 \times 4))k\\= 1i + (-6)j + (-7)k\)

Area of the parallelogram spanned by vectors A and B:

The magnitude of the cross product A × B gives us the area of the parallelogram spanned by A and B.

Area = |A × B|

Area of the parallelogram spanned by vectors A and B:

Area = |A × B| =

\(\sqrt{(1^2 + (-6)^2 + (-7)^2}\\\sqrt{1+36+49\\\\\sqrt{86}\)

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Answer:

BLM

Explanation:

ACAB