Look at the velocity versus time graph below. What is the magnitude of the
displacement of the object after it travels for seven seconds?
Velocity (m/s)
Time (s)
OA. 28 m
B. 26 m
OC. 30 m
OD. 24 m

Answer:

2,

Explanation:

Because one eye can see small area, having two will give your eyesight a bigger AoE (wider area)

The golfer was off line by approximately 38.7 degrees with his tee shot.

To determine the number of degrees the golfer was off line with his tee shot, we can use trigonometry.
First, we need to find the distance between the golfer's tee shot at point A and the green. We can do this by subtracting the distance the golfer hit with his six iron from the total distance from tee to green:
340 m - 165 m = 175 m
Next, we can use the distance and the distance the golfer hit with his tee shot to find the angle he was off line.

We can use the tangent function:
tan θ = opposite/adjacent
where θ is the angle we want to find. In this case, the opposite side is the distance the golfer was off line (i.e. the distance between point A and the intended target on the green), and the adjacent side is the distance the golfer hit with his tee shot (i.e. 220 m).
tan θ = 175/220
θ = tan⁻¹(175/220)
θ ≈ 38.7 degrees
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Answer:

head of water or mouth

Explanation:

Answer:

The beginning of a river is called the source.

Explanation:

I got this correct on oddyseyware

Answer:

Acceleration occurs when an object changes its VELOCITY or DIRECTION or both.

Explanation:

Answer:

When the velocity of an object changes it is said to be accelerating. Acceleration is the rate of change of velocity with time. ... Acceleration occurs anytime an object's speed increases or decreases, or it changes direction. Much like velocity, there are two kinds of acceleration: average and instantaneous. answer velocity or direction.

hope this helps!

Answer: Yes the objects would be balanced.

Explanation:

If there is no net force then the object will not move in any direction, meaning that the object is balanced.

Answer:

radio waves

Explanation:

Answer:

the answer is A radio waves

Answer:

A resultant is the sum of two (or more) vectors.

2. To add vectors, place the vectors such that the tail of the second vector is placed

at the head of the first vector. Draw a resultant vector from the tail of the first

vector to the head of the second vector. Using the Pythagorean theorem,

calculate the magnitude of the resultant vector. Use geometry or a protractor to

determine the angle of direction of the resultant vector.

Explanation:

The length of a simple pendulum is 0.760 m, the pendulum bob has a mass of 365 grams, and it is released at an angle of 12.0 degree to the vertical. The frequency of vibration is approximately 0.364 Hz. The speed of the pendulum bob at the lowest point is not directly provided in the given information, but the total energy stored in the oscillation is approximately 0.394 J.

To determine the frequency of vibration, speed at the lowest point, and total energy stored in the oscillation of the pendulum, we can use the given information and formulas related to pendulum motion.

Given:

Length of the pendulum (L) = 0.760 m

Mass of the pendulum bob (m) = 365 grams = 0.365 kg

Angle to the vertical (θ) = 12.0 degrees

   Frequency of Vibration:

   The frequency of vibration (f) of a simple pendulum can be calculated using the formula:

f = 1 / T

where T is the period of oscillation. The period can be determined using the formula:

T = 2π√(L/g)

where g is the acceleration due to gravity (approximately 9.8 m/s^2).

Plugging in the values:

T = 2π√(0.760 m / 9.8 m/s^2)

T ≈ 2.746 seconds

Now, calculating the frequency:

f = 1 / 2.746 seconds

f ≈ 0.364 Hz

Therefore, the frequency of vibration is approximately 0.364 Hz.

   Speed at the Lowest Point:

   The speed (v) of the pendulum bob at the lowest point of its swing can be determined using the conservation of mechanical energy. At the lowest point, all of the potential energy is converted into kinetic energy.

The potential energy at the highest point (when the pendulum is released) is given by:

PE = mgh

where h is the vertical distance from the highest point to the lowest point.

Since the pendulum bob is released at an angle of 12.0 degrees to the vertical, the vertical distance is h = L(1 - cos θ), where θ is the angle.

Plugging in the values:

h = 0.760 m(1 - cos 12.0 degrees)

h ≈ 0.056 m

PE = (0.365 kg)(9.8 m/s^2)(0.056 m)

PE ≈ 0.197 J

The kinetic energy (KE) at the lowest point is equal to the potential energy:

KE = 0.197 J

The total mechanical energy (E) is the sum of potential and kinetic energy:

E = PE + KE

E = 0.197 J + 0.197 J

E ≈ 0.394 J

Therefore, the speed of the pendulum bob at the lowest point is not directly provided in the given information, but the total energy stored in the oscillation is approximately 0.394 J.

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The Nernst Equilibrium Potential is the potential energy (in mV) when an ion is in electrical equilibrium. The correct option is C.

The Nernst equilibrium potential is a theoretical membrane potential at which the electrical gradient of an ion is precisely counterbalanced by the opposing chemical gradient. For the ion, this means that there is no net flux of the ion through the membrane, and it is at equilibrium.

As a result, this concept defines the voltage at which ion movement would be equal if there were no other forces opposing the movement. For a single ion, the Nernst equilibrium potential may be computed utilizing the following formula:

E ion = (RT/zF) * ln([ion]outside/[ion]inside)

where E ion  represents the Nernst equilibrium potential for an ion, R is the gas constant, T is temperature (in Kelvin), z is the charge of the ion, F is Faraday's constant, and [ion]outside/[ion]inside represents the ion concentration ratio outside/inside the cell.

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Given:

Mass attached to the left-hand side = 3 kg

Mass attached to the right-hand side = 5 kg

Let's find the magnitude of the instantaneous acceleration of the system when it is released from rest.

Apply the formula:

Where:

m1 = 3 kg

m2 = 5 kg

g = 9.8 m/s^2

Thus, we have:

The magnitude of the instantaneous acceleration is 2.45 m/s².

ANSWER:

2.45 m/s²

Explanation:

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they have a pictures just click and thats the answer ↑

The farther you live from an ocean, the more likely you will have a continental climate where there are extreme temperature differences in summer and winter

Inland regions have continental climates. To feel the impacts of ocean water, they are too distant from oceans. Between 40 and 70 degrees north latitude, continental climates are typical.

Northern Ukraine, eastern Belarus, Russia, the majority of Finland, and northern Sweden all have climates that are classified as continental. The northeast has the coldest winters and warmest summers, with winters being significantly colder, longer, and covered in more snow than in western Europe.

Given data ,

Let the land be situated at a place where it is farther away from the ocean

Now , there will be extreme temperature differences during the summer and the winter time

And , winters may be quite cold and summers can be very hot in continental climes. As there is less water in the continental environment than there is in marine climates, the temperatures are not as warm.

Hence , the continental climate takes place the farther you live from an ocean

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The Ptolemaic system explained that parallax was due to the Earth being stationary at the center of the universe and all other celestial bodies orbiting around it in circular paths.

This model believed that parallax was not observable because of the immense distance between the Earth and the stars. It wasn't until the heliocentric model was proposed by Copernicus and further developed by Kepler that the concept of parallax could be properly understood and measured.

Parallax is the apparent change in the position of a star when observed from Earth due to the Earth's orbit around the Sun. The Ptolemaic system, also known as the geocentric model, explained that parallax was not observed because the stars were fixed on a celestial sphere, with Earth at the center.

This model assumed that the Earth was stationary, and any perceived motion of the stars was due to their movement around the Earth.

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To construct an inductor of a given inductance using copper wire and a plastic tube, the student will also need a magnetic core.

An inductor is a passive electronic component that is used to store energy in a magnetic field. It consists of a coil of wire wound around a magnetic core, which is usually made of a ferromagnetic material such as iron or ferrite. The magnetic core enhances the magnetic field created by the coil and increases the inductance of the inductor.

The plastic tube can be used to create a form for the coil of wire. The copper wire will be wound around the plastic tube to create the coil. However, without a magnetic core, the inductance of the coil will be very low, and it may not function as an inductor at all.

The choice of magnetic core material will depend on the specific application and the frequency range of the circuit. In some cases, air can be used as the core material, but in most cases, a magnetic material is required to achieve the desired level of inductance.

In summary, to construct an inductor of a given inductance using copper wire and a plastic tube, the student will need a magnetic core in addition to the copper wire and plastic tube.

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The electric force between a +3 µC point charge and a –3 µC point charge if they are separated by a distance of 5.0 cm can be calculated by using Coulomb’s law. F = kq1q2 / r²F = (9.0 × 109 N·m2/C2) × (3.0 × 10-6 C) × (-3.0 × 10-6 C) / (0.05 m)²F = -243 N

The electric force between a +3 µC point charge and a –3 µC point charge if they are separated by a distance of 5.0 cm can be calculated by using Coulomb’s law.

Coulomb’s law states that the electric force between two point charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them.

Mathematically, F = kq1q2 / r²where, F is the electric forceq1 and q2 are the magnitudes of the two charges is Coulomb’s constant (9.0 × 109 N·m2/C2)r is the separation between the two charges.

Let's use the values from the question to calculate the electric force: F = kq1q2 / r²F = (9.0 × 109 N·m2/C2) × (3.0 × 10-6 C) × (-3.0 × 10-6 C) / (0.05 m)²F = -243 N (the negative sign indicates that the force is attractive)Therefore, the electric force between the two charges is 243 N.

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The value of resistor R that gives the circuit in the figure a time constant of 22 μs is 220 Ω.

The circuit that is in the figure is shown below:Given that time constant (RC) = 22 μs. To find the value of resistor R, we need to use the formula for the time constant:

RC = τ, where R is the resistance and C is the capacitance of the circuit.

Rearranging the above formula, we get:R = τ / C

Where τ is the time constant and C is the capacitance of the circuit.

From the figure, the capacitance is given as 0.1 μF

.Substituting the values of τ and C in the above formula, we get:

R = (22 × 10⁻⁶ s) / (0.1 × 10⁻⁶ F)

R = 220 Ω

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Answer:

B. The dentist uses X-ray radiography, which takes too short a time to cause those problems.

Explanation:

The statement B would best inform Sally of the level of risk. The dentist uses X-ray radiography, which takes too short a time to cause those problems and risk.

X-ray imaging provides images of human internal organs. The photos depict your body parts in various colors of black and white.

Because various tissues absorb varying quantities of radiation, this is the case. Because calcium absorbs the most x-rays, bones appear white.

When X-ray radiation passes into our bodies, it damages molecular structures and may cause injury.

Human cells are damaged by extremely high doses of radiation, as indicated by skin burns, hair loss, and an increased risk of cancer.

Sally is concerned about the X-ray images her dentist plans to take of her teeth. She has read that X-rays can cause tissue effects, such as skin reddening and hair loss.

The statement B would best inform Sally about the level of risk. The dentist uses X-ray radiography, which takes too short a time to cause those problems and risk.

Hence, statement B would best inform Sally about the level of risk.

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Answer:

144 kg m^2/s

Explanation:

Newton's law of universal Gravity:

F = G * (M1 * M2)/ r^2

Where:

G = gravitational constant = 6.674 x10^-11 Nm^2kg^2

M1 = mass 1 = 45.9 kg

M2 = mass 2 = 5.98 x 10 ^24 kg

r = Distance between the 2 objects = 6.38 x 10 ^6 m

Replacing;

F = 450.048 N

You wish to start a fire by reflecting sunlight from a mirror onto some paper under a pile of wood which means the best choice of the type of mirror for this operation is a concave one and is denoted as option B.

This type of mirror usually has a reflective surface that is curved inward and away from the light source. They also reflect light inward to one focal point which is done by reflecting all the rays parallel to its axis and converge them at a single point.

For fire to occur, then we need a large concentration of light rays which will help reflect all the sunlight from a mirror onto some paper under a pile of wood thereby causing the fire.

This is therefore the reason why concave mirror was chosen as the most appropriate choice.

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Answer:

Its C

Thank me later

Now bye

The number of photons in the pulse is 1.21 × 1022.

The energy of a photon can be calculated using the equation:

E = hf, where

E is the energy of a photon,

h is the Planck's constant, and

f is the frequency of the light.

Then, using the equation c = λf, where

c is the speed of light,

λ is the wavelength of the light and

f is the frequency of the light, the frequency of the light can be determined.

Planck's constant (h) is a fundamental constant in quantum mechanics that relates the energy of a photon to its frequency.

Its value is 6.626 × 10-34 joule seconds (J·s).

The frequency of the light is:

f = c / λ

= 3.00 × 108 / 480 × 10-9

= 6.25 × 1014 Hz

The energy of the photon can be calculated:

E = hf

= 6.626 × 10-34 × 6.25 × 1014

= 4.14 × 10-19 J

The number of photons can be determined by dividing the energy of the pulse by the energy of a photon:

n = E / E_photon

= 5.0 × 103 / 4.14 × 10-19

= 1.21 × 1022 photons

Therefore, the number of photons in the pulse is 1.21 × 1022.

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Answer:

1.  0.102 mol/kg.

2. 0.444 mol/kg.

Explanation:

To calculate molality, we need to know the moles of solute (NaCl) and the mass of the solvent (water) in kilograms. First, we need to convert the mass of NaCl to moles by dividing by its molar mass. Then we convert the mass of water to kilograms. Molality (m) is equal to moles of solute divided by kilograms of solvent.

First, we need to convert the mass of glucose to moles by dividing by its molar mass. Then we convert the volume of water to kilograms. Molality (m) is equal to moles of solute divided by kilograms of solvent. Finally, we need to round the answer to three significant figures.

Answer: The Elephant

Explanation: Well i really don't know but i'ma going to take a guess

The Elephant is bigger and will be harder to push the the mouse. Sorry and have a great day :)

Answer:

no more fire duhh

Explanation:

Answer:

The fuel has ran out

Explanation:

Fuel could be Wood,cloth those are longer ones, theres also short term fuel sources such as gasoline, Cloth and wood are the most common for torches usually combined with alcohol, So either No more oxygen which is not likely, or the fuel source is running out

Answer:

the answer is A. 4 carbon atoms, 4 hydrogen atoms, and 2 oxygen atoms

The number of atoms of each molecule of the reactants is required.

The correct option is c. 1 carbon atom, 4 hydrogen atoms, and 4 oxygen atoms

The given reaction is

\(CH_4+2O_2\rightarrow CO_2+2H_2O\)

For carbon atoms

The only carbon atom is present in \(CH_4\)

So, 1 carbon atom

The hydrogen atoms are also present is \(CH_4\)

There are 4 hydrogen atoms.

The oxygen atoms present is \(2\times 2=4\)

So, the number of atoms present in the reactants are c. 1 carbon atom, 4 hydrogen atoms, and 4 oxygen atoms

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Answer:

3m

Explanation:

Fg=Gm1m2/r^2

r^2=Gm1m2/Fg

r^2=(6.67*10^-11)(5*10^5)(5*10^5) /1.6

r^2=10.42

r=3m