A density bottle weighs 50 g when empty and 100g when filled with water calculate the volume of the bottle given that the volume of water is 1gcm³. When the same bottle is fille with liquid A, it weighs 114g find the best of liquid A

The frequency of the orange light is 4.6 x 10^14 sec^-1. To calculate the frequency, we can use the formula:  frequency = speed of light / wavelength. The speed of light is approximately 3 x 10^8 m/s. However, we need to convert the wavelength from nm to m by multiplying it by 10^-9. So,

frequency = (3 x 10^8 m/s) / (650 x 10^-9 m)
frequency = 4.6 x 10^14 sec^-1

To find the frequency of the orange light with a wavelength of 650 nm, we will use the formula:

Frequency (f) = Speed of Light (c) / Wavelength (λ)

First, we need to convert the given wavelength from nanometers (nm) to meters (m) using the conversion factor 1 nm = 10^-9 m:

650 nm * (10^-9 m/nm) = 6.50 * 10^-7 m

Now, we will use the speed of light (c), which is approximately 3.00 * 10^8 m/s:

f = (3.00 * 10^8 m/s) / (6.50 * 10^-7 m)

After dividing, we get:

f ≈ 4.62 * 10^14 sec^-1

So, the frequency of this particular color of orange light is approximately 4.62 * 10^14 sec^-1.

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Lake Mead, the reservoir above the Hoover Dam, has a surface area of approximately 640 km2, so here is the gravitational potential energy of the top 1 meter of water in Lake Mead: 1.42 x \(10^1^7\) J.

Here the calculation for the gravitational potential energy is given below,  

PE = m × g × h

Here,  m = density of water × volume of water                    

m= 1000 kg/\(m^3\) × 640 \(km^2\)× 1 m

m= 640,000,000,000 kg

PE = 640,000,000,000 kg * 9.8 m/\(s^2\) * 220 m

PE= 1.42 x\(10^1^7\) J

Hence, Lake Mead, the reservoir above the Hoover Dam, has a surface area of approximately 640 km2, so here is the gravitational potential energy of the top 1 meter of water in Lake Mead: 1.42 x \(10^1^7\) J.

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Answer:

the answer is different

Explanation:

i took the test

Answer:

Chemical energy is converted to thermal energy and electrical energy.

Explanation:

Answer:

Which identifies the energy transformations that take place in Anna’s body as this process takes place?

Mechanical energy is converted to kinetic energy, which is then converted to potential energy.

*******Chemical energy is converted to thermal energy and electrical energy. *******CORRECT*******

Electrical energy is converted to chemical energy and thermal energy.

Mechanical energy is converted to potential energy which is then converted to kinetic energy.

Explanation:

Feb 2021 Edge 100% test

Answer:

This is one of  the mysteries  of quantum mechanics - a  single photon in classical mechanics is sent out in a circular arc - but when the arc interacts with a distant object the entire wave front collapses and delivers the entire energy of the photon to the object in question.

An analogy has been give as a pop  bottle thrown into the water in New York with its energy spreading out in a circular arc and at some time later  the wave front strikes a pop bottle in the water in Japan with the result of the wave front delivering its entire energy to the bottle with the bottle jumping out of the water.

Answer:

Wood helps in home insulating because logs have both a proper structure and insulation. Since the log has so much heat storage, its huge mass will have a lot more thermal energy than other materials for insulating.

The motion of the ball as it moves from the top of the ramp and comes to rest against the block can be described as follows:

Velocity: The initial velocity of the ball as it is released from the top of the ramp can be calculated by using the kinematic equation v_f = v_i + at, where v_f is the final velocity, v_i is the initial velocity, a is the acceleration, and t is the time.

Distance: The distance traveled by the ball as it moves from the top of the ramp to the point where it comes to rest against the block can be calculated using the kinematic equation d = v_i*t + (1/2)at^2.

Acceleration: The acceleration of the ball can be calculated by using the formula a = (v_f - v_i) / t, where v_f is the final velocity, v_i is the initial velocity, and t is the time.

Force: The net force acting on the ball can be calculated using Newton's second law of motion, F = ma, where F is the net force, m is the mass of the ball, and a is the acceleration.

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1 calcium atom, 1 carbon atom, and three oxygen atoms, so 5 in total.

Answer:

The net force is zero.

Explanation:

Two opposing and equal forces cancel each other out, giving you a net force of zero.

Answer:

Isn't it technically your brain? Because it's always in your skull and when you're younger you have cracks in your skull but as you grow, your skull fossilizes to mend those cracks. IT FOSSILIZES!

Explanation:

The correct option is D. λfilm/4, is wavelength the film thickness to produce the destructive interference of light.

Constructive interference occurs when two waves interact in a way that might combine to create a larger wave.

Therefore, the film thickness needs to be increased by λfilm/4 in order to be able to offer a destructive interference.

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Answer:

True

Explanation:

The shinny outer surface of an electric kettle reflects heat, which reduces energy loss. This helps to make the kettle more efficient, as it takes less energy to heat the water to the desired temperature.

What is the energy ?

Energy is the capacity for doing work. It is a fundamental concept in physics, and is defined as the ability to do work or transfer heat. It is a measurable quantity that can be converted into different forms, such as mechanical, electrical, thermal, chemical, or nuclear energy. Energy is necessary for all types of physical activities, including movement, growth, and development. It is also necessary for many natural processes, such as photosynthesis and respiration. In addition, energy is used to power many of the technologies we use in everyday life, such as computers and cars.

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Answer:

\(\huge\boxed{\text{Soluble}}\)

Explanation:

1. Rare substances are hidden, and you can not find them as common as other elements on Earth. This can not be the answer.

2. Thermal substances are substances that can stay warm for a very long time. This does not specificly dissolve. This can not be the answer.

3. Molecular substances are substances that have many molecules. This is not the answer to the question.

\(\boxed {\boxed {\sf The, option, B, is, your, answer!}}\)

Hii!!! The correct answer is B. Soluble. ((:

Answer:

Weight is a measure of the force of gravity pulling down on an object. It depends on the object's mass and the acceleration due to gravity, which is 9.8 m/s2 on Earth. The formula for calculating weight is F = m × 9.8 m/s2, where F is the object's weight in Newtons (N) and m is the object's mass in kilograms.

Explanation:

Answer:

C

Explanation:

You don't want to buy a 1000 dollar credit card.

The features are useful, like the little sync feature to automatically pay is awesome.

The plan of use for the card is important

the card aesthetic doesn't affect the card in any way, just your personal preference

1.Curved space near massive objects causes other objects to orbit them. - Correct

2.General relativity is an extension of Newton's laws of motion. - Correct

Newton's laws of motion are three physical laws that form the basis for classical mechanics. They were first compiled by English physicist and mathematician Sir Isaac Newton in his 1687 book Philosophiæ Naturalis Principial Mathematical, and describe the relationship between a body and the forces acting upon it.

3.Uniform motion through space is detectable without outside objects if approaching the speed of light. - Incorrect

4.Mass and energy are related. - Correct

5.Neither theory of relativity (general or special) has been experimentally tested. - Incorrect

6.The presence of mass curves space. - Correct

7.The speed of light you observe depends on your frame of reference. - Correct

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the answer is a molecular contact I am pretty sure

Answer:D

Explanation:

Answer:

Speed greater than 4 m/s

Explanation:

Given that Ms. Kasper is in a panic. Her cat, Penny, is stuck in a tree and about to jump out. In order to save her cat, Ms. Kasper needs to run to the tree, 12 meters away. If it takes her cat, 3 seconds to fall, how fast would Ms. Kasper have to run to save her cat?

The distance = 12 m

Time = 3s

Speed = distance/time

Speed = 12/3

Speed = 4 m/s

Ms Kasper must run at speed more than 4m/s for her to save the cat.

We will have the following:

From the graph we can see that the point at which it is accelerating upward is at point C. [We can see that where the slope of the function is positive the acceleration will be positive]

We determine the maximum magnitude of the acceleration of the rider by using the maximum force, that is:

So, the maixmum magnitude of the acceleration will depend on the mass of the rider. Now, since the mass cannot be 0 kg since that would undetermine the expression we know then that the best approximation is:

Where "m" is the mass of the rider in kg. Since we are not given a mass, then the acceleration can only be expressed as the force divided by the mass of the rider.

A UAV with a delta wing that is swept back at an angle of 53° can maintain subsonic flow normal to the leading edge up to a Mach number of approximately 0.72. This is due to the fact that the critical Mach number for this type of wing configuration is typically between 0.7 and 0.8

.

To determine the Mach number, the following formula can be used: Mach number = Velocity of the object / Speed of sound. At subsonic speeds, the speed of sound can be approximated to be 340 m/s. Therefore, to maintain subsonic flow, the velocity of the UAV must be less than the product of the critical Mach number and the speed of sound.

Mathematically, this can be expressed as: Mach number < 0.8 x 340 = 272 m/s (approx.). Using the above formula, we can now determine the Mach number that the UAV can fly at to maintain subsonic flow: Mach number = Velocity of the object / Speed of sound. Mach number = (272 sin 53°) / 340 ≈ 0.72.

Therefore, the UAV can fly at a Mach number of approximately 0.72 and still maintain subsonic flow normal to the leading edge of its delta wing.

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the volume of this rectangular crystal is 3.354 × 10⁻⁴ m³.

Option b) 3.354 × 10⁻⁴ m³ is the correct answer.

Given the data in the question;

Length of the rectangular box \(=8.6 * 10^{-2} m\)

Width of the rectangular box \(=5.0 * 10^{-2} m\)

Depth of the rectangular box \(=7.8 * 10^{-2} m\)

Now, we know that formula for calculating the volume of a rectangular box or prism is;

Volume = Length × Width × Height or depth

So, we simply input our given values into this formula

\(Volume = ( 8.6 * 10^{-2}) ( 5.0 * 10^{-2}) ( 7.8 * 10^{-2})\)

\(Volume = 0.0003354 m\)

\(Volume = 3.354 * 10^{-4} m^3\)

Therefore, the volume of this rectangular crystal is 3.354 × 10⁻⁴ m³

Option b) 3.354 × 10⁻⁴ m³ is the correct answer.

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Answer:

4200 J/°C/kg

Explanation:

The formula for heat transfer is given by :

Q= m*c*ΔT  where;

Q= heat transferred = 6930 J

m=mass of the liquid = 0.330 kg

c= specific heat capacity=?

ΔT = 25-20 = 5.0°C

Applying the values in the formula as;

Q= m*c*ΔT

6930 = 0.330 * c * 5

6930 = 1.65 c

6930/1.65 = c

4200 = c

c= 4200 J/°C/kg

The speed of the gymnast at the bottom of the swing is 6.6 m/s. To solve this problem, we can use conservation of energy. At the top of the swing, all of the gymnast's potential energy is converted into kinetic energy.

To find the speed of the gymnast at the bottom of the swing, we'll use the conservation of mechanical energy principle. The potential energy (PE) at the top of the swing will be equal to the kinetic energy (KE) at the bottom.

At the top of the swing, the gymnast's height is 2.2 meters (twice the distance between his waist and the bar). So, PE_top = m * g * h, where m is the mass, g is the gravitational acceleration (9.81 m/s²), and h is the height (2.2 m).

At the bottom, the gymnast's potential energy is zero, and his kinetic energy is KE_bottom = 0.5 * m * v², where v is the speed.

By equating PE_top and KE_bottom, we get:

m * g * h = 0.5 * m * v²

Since mass (m) appears on both sides of the equation, we can cancel it out:

g * h = 0.5 * v²

Now we can solve for v:

v = √(2 * g * h) = √(2 * 9.81 * 2.2) ≈ 6.6 m/s

Thus, the gymnast's speed at the bottom of the swing is approximately 6.6 m/s.

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Answer:

V=4.5 m/s

Explanation:

KE=1/2mv^2

1500=1/2(15000)v^2

answer :4.5m/s

Explanation:

V=30,000J/1500kg

V=20m²/s²

V=4.5m/s

The Zenith angle at 45 degrees North during the Spring Equinox is 45 degrees.

The Zenith angle is measured as the angle between the vertical line (directly overhead) and the line connecting the observer to the Sun. During the Spring Equinox, when the Sun is directly above the Equator, the Zenith angle at any latitude is equal to the latitude itself.

To calculate the Zenith angle, Solar elevation angle, and beam spreading at a site located at 45 degrees North on the Autumnal equinox (September 22nd), additional information is needed, such as the time of day and the observer's exact location (longitude). These factors affect the position of the Sun in the sky. The Zenith angle is the angle between the vertical line and the line connecting the observer to the Sun. The Solar elevation angle is the complement of the Zenith angle (90 degrees minus the Zenith angle). Beam spreading refers to the divergence of the solar beam as it travels through the atmosphere, which is influenced by factors such as atmospheric conditions and the Sun's position.

The latitude at which daylight hours have the least variability is the Equator (0 degrees latitude). At the Equator, the length of daylight hours remains relatively constant throughout the year, with minimal variation. In contrast, as you move farther away from the Equator towards the poles, the variability in daylight hours becomes more pronounced, with significant changes between the seasons.

False. The spread of the solar beam, known as beam spreading, is actually greater at higher solar angles (closer to 90 degrees) compared to lower solar angles (closer to 0 degrees). At higher solar angles, the solar beam covers a larger area due to the greater incidence angle, resulting in a larger spread of solar radiation. As the solar angle decreases and approaches 0 degrees, the solar beam becomes more concentrated and focused on a smaller area, leading to a higher intensity of solar radiation at that point.

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A reflective journal is like looking in a mirror in that it provides an opportunity for self-reflection and introspection.

A reflective journal is a type of personal journal that is used to document and record thoughts, feelings, and experiences.

A reflective journal allows an individual to reflect on their thoughts, feelings and experiences, and to assess the impact of these on their life and behavior. In this sense, it can be seen as a tool for self-discovery and growth.
I agree with this analogy. Reflective journaling provides an opportunity to take a step back and objectively assess our lives and our behavior, much in the same way that looking in a mirror can help us to reflect on our physical appearance and make changes accordingly. Through reflective journaling, we can gain insight into our motivations, values, and beliefs, and use this to make positive changes in our lives.

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