A grapefruit falls from a tree and hits the ground 0.76 s later.
How far did the grapefruit drop?
What was its speed when it hit the ground?

Barbara's speed driving in clear weather is 30 mph and her speed driving in the thunderstorm is 11 mph.

Barbara's speed driving in clear weather is s. She drives 19 mph slower through the thunderstorm, so her speed in the thunderstorm is s - 19.

The total distance of the trip is 45 + 13 = 58 miles. And the total time for the trip is 1.5 hours.

Using the following equation to find Barbara's speed in clear weather:

distance = speed × time

45 miles = s × 1.5 hours

30 mph = s

So, Barbara's speed driving in clear weather is 30 mph.

Now find her speed in the thunderstorm by subtracting 19 mph from 30 mph:

s - 19 mph = 30 mph - 19 mph

s - 19 mph = 11 mph

Therefore, Barbara's speed driving in the thunderstorm is 11 mph.

To summarize, Barbara's speed driving in clear weather is 30 mph and her speed driving in the thunderstorm is 11 mph.

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Answer:

Your position would be -1

Explanation:

I think that's the answer you would need to collaborate more so i can give you a clear answer.

The formula a = dv/dx, where v is velocity, x is position, and a acceleration, are dimensionally consistent in the units of m/s2. Hence, the correct answer is "yes - both a and dv(x)/dx have units of m/s2."

Dimensional consistency refers to the consistency of dimensions in terms of their basic units. For example, the velocity formula V = D/T, where V is velocity, D is distance, and T is time, are dimensionally consistent, as the distance unit is measured in meters (m), time unit is measured in seconds (s), and the velocity unit is measured in meters per second (m/s).Dimensionless quantities refer to a value or quantity without any dimension. These are useful in simplifying various physical formulas, as they don't require any additional conversion factor. Examples of such quantities are ratios, percentages, and probabilities.The formula a = dv/dx, where v is velocity, x is position, and a acceleration, are dimensionally consistent in the units of m/s2. Hence, the correct answer is "yes - both a and dv(x)/dx have units of m/s2."

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Acceleration and the ratio of change in velocity to change in position in the provided formula both have the units of m/s², making them dimensionally consistent.

The units of the formula a= dv/dx, where v is velocity, x is position, and a is acceleration, are indeed dimensionally consistent. Acceleration a has the unit of m/s², as it represents the rate of change of velocity (which has units of m/s) with respect to time (which has units of s). Meanwhile, dv/dx also has the units of m/s². This is because dv represents a change in velocity (which has units of m/s), and dx represents a change in position (which has units of m). Dividing m/s by m gives s⁻¹ (or 1/s), which is equivalent to m/s².

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The diagonal elements of the moment of inertia tensor are \(MR^2/2\) for the x and y axes, and \(MR^2\) for the z-axis. The moment of inertia tensor of a thin uniform ring can be obtained by considering its rotational symmetry and the distribution of mass.

The moment of inertia tensor (I) for a thin uniform ring of radius R and mass M, with the origin at the center of the ring and lying in the xy-plane, is given by I = \(M(R^2/2)\)  To derive the moment of inertia tensor, we need to consider the contributions of the mass elements that make up the ring. Each mass element dm can be treated as a point mass rotating about the z-axis.

The moment of inertia for a point mass rotating about the z-axis is given by I = \(m(r^2)\), where m is the mass of the point and r is the perpendicular distance of the point mass from the axis of rotation.

In the case of a thin uniform ring, the mass is distributed evenly along the circumference of the ring. The perpendicular distance of each mass element from the z-axis is the same and equal to the radius R.

Since the ring has rotational symmetry about the z-axis, the moment of inertia tensor has off-diagonal elements equal to zero.

The diagonal elements of the moment of inertia tensor are obtained by summing the contributions of all the mass elements along the x, y, and z axes. Since the mass is uniformly distributed, each mass element contributes an equal amount to the moment of inertia along each axis.

Therefore, the diagonal elements of the moment of inertia tensor are \(MR^2/2\) for the x and y axes, and \(MR^2\) for the z-axis.

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Answer:

The head-to-tail method of adding vectors involves drawing the first vector on a graph and then placing the tail of each subsequent vector at the head of the previous vector. The resultant vector is then drawn from the tail of the first vector to the head of the final vector.

Explanation:

Translation-Adding more gas to a tank, the internal pressure will increase because by increasing the number of particles?

Adding more gas to a tank, the internal pressure will increase because by increasing the number of particles increases collision between particles.

The frequency of collisions between gas particles and the container walls determines the gas pressure. The number of collisions and consequently the pressure will rise if we fill the container with more gas particles.

The Avogadro Principle (V N) states the frequency of collisions with the container walls must increase as the number of gas particles increases. The pressure of the gas then rises as a result of this. Pressure rises as the number of gas molecules rises while the volume of the container stays the same. Gas pressure rises as container volume decreases. The pressure rises as the temperature of a gas inside a rigid container rises.

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Answer:

About 3.54x1022 N.

Explanation: The gravitational force between the Sun and the Earth is about 3.54x1022 N. This force keeps the Earth orbiting around the Sun. The gravitational force from the other planets does slightly affect the Earth's orbit, but the gravitational pull from the other planets and the Moon is still very small. Sorry if I get this wrong. I am in 5th grade! ♥

Answer:

He dodged it.

Explanation:

∑ Hey, Lethality ⊃

Answer:

5.30 + 6.2=11.5

640 - 28.3 = 612

7,000 + 5=7005

8,000. - 6.0 = 7994

1.00 + 0.006=1.01

Explanation:

Given:

Add and Subtract these numbers using SIG FIGS. (Significant Figures)

5.30 + 6.2

640 - 28.3

7,000 + 5

8,000. - 6.0

1.00 + 0.006

Solution~:

-------------------------------------------------------------------------------------------------------------

Number of significant figures: 3

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Number of significant figures: 3

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Number of significant figures: 4

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Number of significant figures: 4

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Number of significant figures: 3

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xcookiex12

8/23/2022

If an object moves around a circle, of radius 6 m, with constant velocity, the angular velocity of the object is 1.67 1.67 radians per second.

The angular velocity of an object moving in a circular path can be calculated using the formula:

ω = v / r

Where ω is the angular velocity, v is the constant speed, and r is the radius of the circle.

In this case, we are given the constant speed (v) as 10.0 m/s and the radius (r) as 600 cm. We need to convert the radius to meters in order to use the formula correctly:

r = 600cm * (1m / 100cm) = 6m

Now we can plug in the values and solve for the angular velocity:

ω = v / r

ω = 10.0 m/s / 6 m

ω = 1.67 radians per second

Therefore, the angular velocity of the object is 1.67 radians per second.

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Distance of train after 1.8 h is 485.099 m

Distance is a measurement of how far apart two things or points are, either numerically or occasionally qualitatively. Distance can refer to a physical length in physics or to an estimate based on other factors in ordinary language.

Distance of the first plane = 650 x 1.8 = 1170 m

Distance of the second plane = 590 x 1.8 = 1062m

The angle between 2 planes

161◦ - 16.9◦ = 144.1°

Using the law of cosine

d^2 = (1170)^2 + (1062)^2 - 2*1170*1062*cos 144.1°

d = 485.099 m

Hence, distance of train after 1.8 h is 485.099 m

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Answer:

this is ur answer

Answer:

7 seconds

Explanation:

please see paper!

vf² = vo²+2ad

vf=vo+at

vf²=3.5²+2.2.75

vf²=312.25

vf=17.67 m/s

vf=vo+at

17.67 = 3.5 +2t

t=7.085 s

Answer:

The atom consists of a tiny nucleus surrounded by moving electrons. The nucleus contains protons, which have a positive charge equal in magnitude to the electron's negative charge. The nucleus may also contain neutrons, which have virtually the same mass but no charge.

Explanation:

(c) T. The period of oscillation remains unchanged even when the mass of the bob is increased to 4.0m.

The period of oscillation of a simple pendulum is primarily determined by its length (l) and the acceleration due to gravity (g). The mass of the bob does not play a significant role in the oscillation period. The formula for the period of a simple pendulum is given by:
T = 2π √(l/g)
In this scenario, the mass of the bob is initially m, and the period is T. When the mass of the bob is replaced by one with mass 4.0m, the formula for the period remains the same since the mass does not influence the period:
T' = 2π √(l/g)
Comparing the initial period (T) and the new period (T'), we can see that both formulas are identical, which means the period remains the same:
T = T'
Hence, the correct answer is (c) T. The period of oscillation remains unchanged even when the mass of the bob is increased to 4.0m.

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Answer:

Velocity 8 m/s

Explanation:

Given:

m₁ = m₂  = 0.1 kg

v₁ = 8 m/s

v₂ = - 7 m/s

v₁' = - 7 m/s

____________

v₂' - ?

Law of conservation of momentum:

m₁·v₁ + m₂·v₂ = m₁·v₁' + m₂·v₂'

m₁·8 - m₂·7 = - m₁·7 + m₂·v₂'

m₁ = m₂

8 - 7 = - 7 + v₂'

v₂' = 8 m/s = v₁

This phenomenon is called "velocity exchange".

The 10-N object is suspended at rest by two equally taut vertical strands of rope, we can analyze the forces acting on the object to determine the tension in each strand.  First, we identify the forces acting on the object: gravity and tension in the ropes.

The gravitational force (weight) is 10 N, acting downward, while the tension forces in the ropes act upward to balance the weight. Since the object is at rest and not moving, the forces acting on it must be balanced according to Newton's first law. This means the total upward tension forces must equal the downward gravitational force. As the two strands of rope are equally taut vertical, the tension in each strand is the same. Let's denote the tension in each strand as T. Thus, the total upward tension force is the sum of the tensions in each strand: 2T. To balance the forces, we set the total upward tension force equal to the downward gravitational force: 2T = 10 N. Finally, we solve for the tension in each strand, T, by dividing both sides of the equation by 2 T = 10 N / 2 = 5 N. Therefore, the tension in each of the two equally taut vertical strands of rope is 5 N.

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Answer:

25 joules

Explanation:

Not sure I understood correctly but since 15 are taken up by mechanical energy and 10 are taken in by electrical, 50-10-15 would result in 25 joules which must belong to heat energy

The magneto-electric effect causes both a magnetic and an electric field to exist, which is the right response to the question.

The area in which the force of magnetism acts around a magnetic material or a moving electric charge is known as the magnetic field.

If the Earth's magnetic field is perpendicular to the ground at your location, it means that the magnetic field lines are vertical and pointing downwards (or upwards) into the Earth. Since the electric field is zero, we can conclude that there is no electric current or charge in the vicinity.

If you run through this field, you will experience a magnetic field. This is because your motion through the magnetic field induces an electric field according to Faraday's law of electromagnetic induction. The induced electric field is perpendicular to both the magnetic field and your direction of motion, and it generates a magnetic field that is perpendicular to both the electric and magnetic fields. This phenomenon is known as magneto-electric effect or electromagnetic induction.

Therefore, the correct answer to the question is: you will find both a magnetic and an electric field due to the magneto-electric effect.

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The heat lost by water is equal to the heat gained by ice here. The heat lost from water for a temperature change of 25 to 10 degree Celsius is 12300 J.

Calorimetry is an analytical technique used to determine the heat energy absorbed or evolved by a system. The calorimetric equation relating the heat energy q with the mass m, specific heat c and the temperature difference ΔT is :

q = m c ΔT

Here, the heat energy gained by the dry ice is equal to the heat lost from water.

temperature difference for water = 25- 10 °C = 15°C

thus, 15°C is lost from water.

mass of water = 200 g

q =200 g × 4.12 J/°C g × 10°C = 12300 J

Therefore, the heat energy lost from water is 12300 J.

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After then, the meteorite accelerates quickly to achieve its terminal speed, which is between 200 and 400 miles per hour (90 to 180 meters per second).

The meteorite then swiftly reaches its final velocity, which is between 200 and 400 miles per hour (90 to 180 meters per second). The terminal velocity is the speed at which the acceleration caused by gravity is precisely cancelled out by the deceleration caused by atmospheric drag.

Researchers first classify the sort of rock in their investigation before dating the meteorite to ascertain its origin. Nakhla indicated that it originated 1.3 billion years ago, a significant amount of time after the majority of other meteorites, which date from the Solar system's creation, 4.56 billion years ago.

Meteorites are priced and sold by the gram because they are so rare. Price is influenced by a number of factors, including demand, scarcity, supply, specimen size, specimen quality, and preparation effort. The average cost per gram of a common iron meteorite is between US$0.50 and US$5.00.

Therefore, the correct answer is option d) a typical meteorite's weight, surface area, and coefficient of drag.

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Answer:

b. An outside force acts upon it

Explanation:

Answer: D. Annular Solar Eclipse

Explanation:

An annular solar eclipse happens when the Moon passes between the Sun and Earth, but when it is at or near its farthest point from Earth. Because the Moon is farther away from Earth, it appears smaller than the Sun and does not completely cover the Sun.

When the fighter plane opens the fire, its momentum will be in backward direction and its speed decreases.When pursued plan opens fire in backward direction.then the momentum of plane will be in forward direction and its speed increases.

It is important to note that the debate between scientific realism and antirealism is ongoing and complex, with various nuances and perspectives within each position. Different philosophers of science and scientists may hold different views on the nature of scientific terms and their relationship to reality.

According to a scientific realist perspective, scientific terms for unobservable phenomena such as "atom" and "black hole" are seen as referring to entities that truly exist in reality. Scientific realists believe that scientific theories and concepts accurately capture aspects of the world, including unobservable entities and phenomena. They argue that scientific theories provide the best explanation of the natural world and aim to describe the underlying structure and mechanisms of reality.

On the other hand, scientific antirealists hold a different view. They argue that scientific terms that refer to unobservable phenomena do not necessarily correspond to something that exists independently in reality. Antirealists often emphasize the instrumentalist view of science, which suggests that scientific theories are simply tools or frameworks that help us organize and predict observable phenomena, without making claims about the ultimate nature of reality.

Antirealists may argue that scientific theories are subject to revision and change over time as new evidence emerges, suggesting that the terms used to describe unobservable phenomena are not fixed and may not have a one-to-one correspondence with actual entities in reality. They may also highlight the role of social and cultural factors in shaping scientific knowledge, suggesting that scientific terms are influenced by human conventions and interpretations.

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The efficiency of the washing machine would be 7.41%.

The efficiency of any machine is a measure of the useful energy of the machine.

More specifically, the efficiency of a machine is the ratio of the input energy to the output energy.

Mathematically:

Efficiency = output energy/input energy x 100%

For a machine that uses 1039 W of energy, this simply means that the input energy of the machine is 1039 W. However, not all of this energy will be used to work.

Hence, the amount of useful energy of the machine can be calculated as:

1039 - (274+688) = 77 W

Thus:

Efficiency = 77/1039 x 100

                = 7.41 %

In other words, the efficiency of the washing machine is 7.41% when rounded to 2 decimal places.

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Answer:

can you make it clear i do not understand.

Explanation:

Given:

To find:

Fill in the blanks

Explanation:

1) Energy can undergo conversion, changing from one form to another. For example, a wind turbine converts the mechanical energy of the wind into electric energy in the power grid. This power grid can then be converted into thermal energy by an electric heater.

2) Solar panels generate electrical energy by taking radiant energy from the sun and having it undergo conversion. This process does obey the law of conservation of energy because energy isn't randomly created, but it is simply converted.

By using average speed formula, we can easily calculate and The Average speed of truman is 0.5 meter/second.

An average speed is nothing but the total distance travelled divided by the total time taken to travel that distance.

Average speed = \(\frac{Total distance travelled}{total time taken}\)

Total distance is the sum of distances travelled, irrespective of the direction. Becasue speed is not a direction dependant. Similarly time is also the total time taken to travelled the total distance.

Here in this question,

truman walks total distance = 4m (East) +2m+4m+2m = 12meter

and the total time taken = 24 seconds

By using the above expressions, we can easily calculate

Average speed = 12 meter / 24 seconds,

Therefore average speed is 0.5 meter/second

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