"A pilot heads his jet due east. The jet has a speed of 475 mi/h relative to the air. The wind is blowing due north with a speed of 40 mi/h. (Assume that the i vector points east, and the j vector points northwhat is the true direction of the jet? (round your answer to one decimal place.)"

The most likely source of error would be human error such as delay in stopping the stopwatch. The coordination error would be the source of error.

On Earth, the speed of sound as calculated experimentally at sea level assuming a default air temperature of 59 degrees Fahrenheit (15 degrees Celsius) is 761.2 mph (1,225 km/h). The speed of sound is slowed down because gas molecules move more slowly at lower temperatures.

Thus, sound tends to move faster in warmer air.

To explain what speed of sound is, the speed of sound can be described as the distance travelled per unit of time by any sound wave as it propagates through a completely elastic medium.

At 20 °C, temperature the speed of sound in air is about 343 meters per second, or one kilometer in 2.91 s or one mile in 4.69 s.

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Answer:

During an experiment, a student moves a cell from pure water to salted water. ... It will release water and shrivel. It will release water and burst.

Answer:

Terminal Velocity

Explanation:

The correct answer is 441 N.

The force that pulls objects toward the centre of the Earth is known as earth gravity. The acceleration of all the bodies that are affected by gravity is almost equal to the strength of the gravitational field.

The force exerted on an object by gravity is known as the weight of a body.

As a result, we can state that weight is only a force.

Given that the mass of a person on earth is = 45 kg

and that gravity's acceleration on earth is = 9.8 ms^2.

Weight, then, is defined as mass multiplied by the gravitational acceleration, or W = m × g.

W = 45 × 9.8

W = 441 N

Hence, the total weight on Earth will be 441 Newton.

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Answer:

Explanation:

First off, let's call the -15 degree water solution1, and the 32 degree water solution2. The formula for this is

\(t_f=\frac{(m_1*spheat_1*temp_1)+(m_*spheat_2*temp_2)}{(m_1*spheat_1)+(m_2*spheat_2)}\)

where spheat is specific heat of water that I found to be 4182 J/(kgC). This means that we need our masses in kg and they are currently in g.

100 g = .100 kg and

220 g = .220 kg. Now we're ready to plug everything in:

\(t_f=\frac{(.100*4182*-15)+(.220*4182*32)}{(.100*4182)+(.220*4182)}\) and

\(t_f=\frac{-6273+29441.28}{418.2+920.04}\) and

\(t_f=\frac{23168.28}{1338.24}\) so

\(t_f=17.3\) °C

The nucleus of an atom is neutral and contains protons and neutrons. The number of nucleons present in the nucleus is not always equal to the number of electrons present outside the nucleus. The nucleus accounts for a very small fraction of the volume of an atom and for almost all the mass of an atom and is always positively charged.

1. True: The nucleus of an atom is neutral because it contains an equal number of positively charged protons and negatively charged electrons.

2. False: The nucleus of an atom contains protons and neutrons. Neutrons have no charge, but protons are positively charged.

3. False: The number of nucleons present in the nucleus is not always equal to the number of electrons present outside the nucleus. The number of electrons is determined by the atomic number of the element, which corresponds to the number of protons in the nucleus. The number of nucleons (protons + neutrons) can vary depending on the isotope of the element.

4. False: The nucleus accounts for a very small fraction of the volume of an atom. The majority of the volume of an atom is occupied by the electron cloud.

5. True: The nucleus accounts for almost all the mass of an atom. This is because protons and neutrons have much greater mass than electrons.

6. False: The nucleus is always positively charged because it contains positively charged protons. The number of protons in the nucleus determines the atomic number and the identity of the element.

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The moon’s orbit is closer to Earth is the event which occurs during high tide.

This occurs once in a month and is the phenomenon in which the moon is

closest to the Earth. This brings about an increase in the tide levels of the

water bodies.

This is the reason why the option B is the most appropriate option as the

moon’s orbit being closer to Earth also signifies a close proximity between

the moon and the earth

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Answer: The answer is: b) The moon’s orbit is closer to Earth.

Explanation: I have my ways :>

Have a great day!

-Sunny

The stopper travels approximately 4.5 meters horizontally before hitting the ground.

We can use conservation of energy to solve this problem. At the highest point of the stopper's motion, all of its energy is in the form of potential energy, and at the lowest point (when it hits the ground), all of its energy is in the form of kinetic energy.

The potential energy of the stopper at the highest point is:

Ep = mgh

where m is the mass of the stopper, g is the acceleration due to gravity, and h is the height above the ground. Plugging in the values given in the problem, we get:

Ep = (0.150 kg) * (9.81 m/s²) * (2.3 m) ≈ 3.2 J

At the lowest point, all of the potential energy has been converted to kinetic energy:

Ek = (1/2) * mv²

where v is the speed of the stopper just before it hits the ground. Since the stopper is released from rest, we can use conservation of energy to equate the potential energy at the highest point to the kinetic energy just before hitting the ground:

Ep = Ek

mgh = (1/2) * mv²

Solving for v, we get:

v = √(2gh)

where h is the height from which the stopper was released. Plugging in the values given in the problem, we get:

v = √(2 * 9.81 m/s² * 2.3 m) ≈ 6.6 m/s

Now we can use the time it takes for the stopper to fall to the ground to calculate the horizontal distance it travels. The time is given by:

t = √(2h/g)

Plugging in the values given in the problem, we get:

t = √(2 * 2.3 m / 9.81 m/s²) ≈ 0.68 s

During this time, the stopper travels a horizontal distance given by:

d = vt

Plugging in the values we just calculated, we get:

d = (6.6 m/s) * (0.68 s) ≈ 4.5 m

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Because you are testing temperature, it is the independent variable. You must calculate each player's score because you're aiming to gauge how effectively football players perform in various environments.

Hypothesis The amount of happiness increases with daily sun exposure. The assumed cause in this example and the explanatory variables is sun exposure. The assumed impact, or dependent variable, is the degree of happiness.

A hypothesis is a statement about the physical world that can be verified by observations or tests. Hypotheses must be falsifiable and subject to scientific scrutiny in order to qualify as scientific.

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Answer:

D

Explanation:

Because triton orbits neptune backwards it will fall into neptune giving neptune bigger rings

Answer:

It also increases

Explanation:

The strength of the gravitational force between two objects depends on two factors, mass, and distance. the force of gravity the masses exert on each other. If one of the masses is doubled, the force of gravity between the objects is doubled. increases, the force of gravity decreases.

Answer:

4) we take a can of cold soda there is a transfer from hand to can.  a current passes through a light bulb, it becomes incandescent and gives ligh

5) the law of energy conservation states that energy is neither created nor destroyed, therefore what happens is that you use energy and transform it into another type of energy,

Explanation:

4) This exercise is asked to give some examples of thermal and electrical energy transfer

the transfer of thermal energy occurs when we grasp a hot or cold body due to the difference in temperature between the body and us there is an exchange of heat, for example when drinking a cup of hot coffee there is a transfer of energy from the cup to the hand .

If we take a can of cold soda there is a transfer from hand to can.

Electrical transfer occurs, for example, when a current passes through a light bulb, it becomes incandescent and gives light.

In all modern electrical appliances there is transformation of electrical energy

5) the law of energy conservation states that energy is neither created nor destroyed, therefore what happens is that you use energy and transform it into another type of energy,

For example, when you lift a box, the potential energy of the box increases with height, but the energy of the person decreases because it does work that is negative.

In amusement park rides, the energy accumulated in one part of the game generally with height is transformed into energy of movement in another part of the game, but the total energy remains constant.

Answer: 137.14 kg

Explanation: F=ma (Force = mass x acceleration)

So, 48N (newtons) = m×0.35m/s²

N = kg (m/s²)

      (48 kg m/s²)÷0.35m/s² = m

      137.14 kg

 note: answer is to the nearest hundredth because of the .035 m/s²

Inside a freely-falling elevator, there would be no apparent weight for you.So option B is correct.

Inside a freely-falling elevator, there is still a gravitational force acting on you. However, since both you and the elevator are falling at the same rate, you would experience a sensation of weightlessness. Your apparent weight, which is the force exerted on a body due to gravity, would be zero. This is because there is no contact force between you and the elevator floor that would provide a normal force to counteract gravity. Therefore, the correct option is that there would be no apparent weight for you.

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Answer:

radius=4.77cm

Explanation:

given

r=? ,h=14 , v=1000

then using the formula

\(r = \sqrt{ \frac{v}{\pi \: h} } \)

= √1000/π•14

=4.77cm

Answer:

A healthy diet, low in sugar, caffeine, and alcohol, can promote health and reduce stress.

Explanation:

A healthy diet, low in sugar, caffeine, and alcohol, can promote health and reduce stress. Get adequate sleep: A good night's sleep makes you able to tackle the day's stress more easily. When you are tired, you are less patient and more easily agitated, which can increase stress.

Answer:

It would appear as a flattened disk with a central bulge and spiral arms, spanning a few degrees across the sky.

Explanation:

I hope this helps! Have a great day!

Anygays-

The value that represents the mass of block C that would keep crate D in equilibrium is 196.2 kg (Option D).

To determine of value that represents the mass of block C that would keep crate D in equilibrium, ee can begin by determining the tension in the ropes. Since the crate is held in a certain location by two blocks, the tension in the ropes should be equal. We can use this fact to calculate the tension in the ropes by assuming that they have the same magnitude.

In this case, let T be the tension in each rope segment. The forces acting on the system can be represented in the following free-body diagram:

For the x-direction: T sin 30° = T sin 60° + µg = 0

where µ is the coefficient of friction and g is the acceleration due to gravity. Since the pulleys are frictionless, µ = 0. Therefore, we can simplify the equation as follows:

T sin 30° = T sin 60°

Dividing both sides by T:

sin 30° = sin 60°/2

This gives us: T = (2/√3) mg where m is the total mass of the system and g is the acceleration due to gravity.

Substituting the given values, we obtain:

T = (2/√3) × 150 × 9.81 ≈ 1962 N

Next, we can use the law of the lever to calculate the mass of block C required to keep the crate in equilibrium. According to this law, the sum of the moments acting on the system must be zero. We can choose the point where the ring is attached to the rope as the pivot. This gives us the following equation:

(135 kg)(9.81 m/s²)(3 m) + (mC)(9.81 m/s²)(6 m) - (150 kg)(9.81 m/s²)(4.5 m) - (1962 N)(3 m) = 0

Simplifying: (135)(3) + (6mC) - (150)(4.5) - (1962)(3) = 0

Rearranging: 6mC = 150(4.5) + 1962 - 135(3)

6mC = 2127

mC ≈ 196.2 kg

Therefore, the value that represents the mass of block C required to keep crate D in equilibrium is approximately 196.2 kg. Thus, the correct option is D.

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Answer:

The mass of a spacecraft is the same on earth as the moon.

W = F = M a    the weight is different because the acceleration due to gravity is less on the moon than it is on earth.

On could choose a different mode of acceleration, say a compressed spring, and find that mass of an object does not depend on gravitational attraction.   F = M a holds on the moon as well as on earth

Answer:

\(\boxed {\boxed {\sf D. \ 6170 \ N}}\)

Explanation:

We want to find how much force Superman exerted while pushing a boulder.

Work is the energy transferred to or from an object when force is applied along a displacement. It is the product of force and distance.

\(W=Fd\)

Superman did 14,500 Joules of work. We can convert the units to make the problem easier later. 1 Joule is equal to 1 Newton meter.

He pushed the boulder 2.35 meters.

Substitute the values into the formula.

\(14,500 \ N*m= F* 2.35 \ m\)

We are solving for the force he exerted, so we must isolate the variable F. It is being multiplied by 2.35 meters. The inverse operation of multiplication is division, so we divide both sides by 2.35 meters.

\(\frac{14,500 \ N*m}{2.35 \ m}= \frac{F* 2.35 \ m}{2.35 \ m}\)

\(\frac{14,500 \ N*m}{2.35 \ m}=F\)

The units of meters cancel.

\(\frac{14,500 \ N}{2.35 }=F\)

\(6170.21277 \ N= F\)

Round to the nearest whole number. The 2 in the tenth place tells us to leave the 0.

\(6170 \ N \approx F\)

Superman exerted approximately 6170 Newtons of force.

Answer:

6170

Explanation:

The water pressure at the bottom of a geyser decreases when some of the water above gushes out. The result is a decrease in pressure which can cause more water to boil and generate steam, leading to a geyser eruption.

Geysers are hot springs that periodically erupt with boiling water and steam. This happens because water in the ground is heated by magma, which causes it to rise and accumulate in underground reservoirs. As the water heats up, it creates pressure that eventually forces it to escape through a narrow opening, creating the geyser's signature eruption.

As the pressure decreases, the boiling point of the water at the bottom also decreases. If the temperature of the water at the bottom is higher than its new boiling point, it will boil and generate steam. The steam then forces more water out of the geyser, creating an eruption.

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The final displacement of the F-35B Lightning fighter jet is determined as 24,991.2 m.

The displacement of the flight is calculated from triangle method of vector addition as follows;

Angle between the first two sides = 90 - 26⁰  = 64⁰

r² = a² + b² - 2abcosR

r² = 20² + 25000² - (2 x 20 x 25000) x cos(64)

r² = 624,562,028.9

r = 24,991.2 m

Thus, the final displacement of the F-35B Lightning fighter jet is determined as 24,991.2 m.

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The box accelerates at 1. 0 m/s² to the right because the net force is 17N to the right . This statement clearly depicts the relation between force and acceleration. Hence option A is correct.

Acceleration is defined as the rate of change of the velocity of the body. Its unit is m/sec².It is a vector quantity. It requires both magnitudes as well as direction to define.

According to Newton's second law of motion, the net force acting on the body is equal to the product of mass and acceleration of the body.

The direction of acceleration is in the direction of net force acted.

Hence option A is correct.

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Answer:

Explanation:

Given:

M = 20.0 kg

V₀ = 0 m/s

V = 16.0 m/s

___________

A - ?

A = M·V² / 2

A = 20.0·(16.0)² / 2 = 2 560 J

Answer: B 2560j

Explanation:

i got it right on edge 2022

She should use shorter focal length to fit the entire landscape which she is trying to photograph into her picture.

What is focal length?

The focal length is a measure of how strongly the system converges or diverges light.

A positive focal length indicates that a system converges light, while a negative focal length indicates that the system diverges light.

For a standard rectilinear lens,

FOV = 2 arctan (x/2f)

FOV ∝ 1 / f

where x is the diagonal of the film.

Focal length (f) and field of view (FOV) of a lens are inversely proportional.

From the equation we can say that,

A shorter focal length gives you a wide angle of view which allows more view to fit in the frame.

Hence,

She should use shorter focal length to fit the entire landscape which she is trying to photograph into her picture.

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Consider the situation where a person that has a mass of 68 kg is descending in an elevator at a constant velocity of 4.0 m/s. At some time "t", the elevator starts to slow to a stop at the rate of 2.0 m/s². then force along the elevator is 136 N.

Force is responsible for the motion of an object. it produces acceleration in the body. According to newton's second law force is mass times acceleration i.e. F =ma. Its SI unit is N which is equivalent to kg.m/s². There are two types of forces, balanced force and unbalanced force. Balanced forces are those forces which are opposite in direction and equal in magnitude. When Net force acting on a body is zero then we call it as balanced force. Balanced force is not responsible for the motion of the body. ex. when two persons pulling rope on both end with equal magnitude which cause them to be balanced force have 0 net force.

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