The weight of an object on a planet depends not only on its mass, but also on its distance from the planets center. Uranus has more than 14 times as much mass as earth, yet the gravitational force is less. Explain how this could be. Pleas answer cause idk what it means.
Answers
Hope this helps!
where m is the mass and g the gravitational acceleration.
Uranus has much more mass than Earth though it has less gravitational force than Earth.
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Since the wave moves by uniform motion, we can use the usual relationship between space, time and velocity:
where v=343 m/s is the speed of sound. Using this number, we can find L from the previous equation:
So, the canyon is 1286 meters wide.
b. depletes natural resources
c. hazardous wastes
d. potential reactor accident
e. water pollution
Answers
Answer: a. air pollution
c. hazardous wastes
d. potential reactor accident
e. water pollution
A nuclear energy is produced in a thermal power plant. A nuclear energy is produced in a nuclear reactor. In nuclear reactor nuclear fission reactions takes place in which an atoms absorbs energy from radiations and undergo fission and produces energy in the form of high intensity radiations along with heat. Although the fission reactions takes place in a nuclear reactor in a controlled way so that the radiation may not leak out from the reactor. The accidentally leak out radiations or explosion or bursting of the reactor due to uncontrolled thermal energy production can result in air pollution as the leak out air will cause bursting effects which will contaminate the air.
The nuclear waste are radioactive and are non-biodegradable these wastes are disposed off deep in geospheres and in water. They have potential to contaminate both land and water. Radioactive wastes can cause mutations in the genome of the organisms exposed to these wastes which generate deadly diseases and disorders. Therefore, these wastes are hazardous.
Answer: Hazardous wastes and potential reactor accident.
Answers
Answer:
655 nm
Explanation:
When the intereference is destructive then the thickness, d of antireflective film coating one side is given by
2d=w/2n
Where w is wavelength and n is the reflective index of the film
Making w the subject of formula then
w=4nd
Substituting 1.25 for n and 131 nm for d then the wavelength will be
w=4*1.25*131=655 nm
Therefore, the wavelength is equivalent to 655 nm
The formula for calculating the wavelength in an antireflective film involves thickness (d) and refractive index (n). For n = 1.25 and d = 131 nm, the resulting wavelength is 655 nm.
When light waves encounter a thin film, some of the waves are reflected from the top surface of the film, and some pass through it. These waves can interfere with each other, leading to constructive or destructive interference. In the case of antireflective coatings, destructive interference is desired to minimize reflection.
The formula you mentioned is used to calculate the thickness (d) of an antireflective film that results in destructive interference for a specific wavelength (w) of light. The formula is:
2d = w / (2n)
Where:
d is the thickness of the film.
w is the wavelength of light.
n is the refractive index of the film.
To find the wavelength (w) when given the thickness (d) and refractive index (n), you can rearrange the formula:
w = 4 * n * d
Now, let's calculate the wavelength using the provided values:
n = 1.25 (refractive index)
d = 131 nm (thickness in nanometers)
Substitute these values into the formula:
w = 4 * 1.25 * 131 = 655 nm
Therefore, the calculated wavelength (w) is 655 nanometers (nm). This means that for a film with a refractive index of 1.25 and a thickness of 131 nm, destructive interference occurs at a wavelength of 655 nm.
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Answers
The speed of electron be 183.73 m/s.
What is potential energy?
The energy held within an object is known as potential energy. There are several different types of potential energy, including gravitational potential energy, elastic potential energy, and electric potential energy. An object's energy as a result of the overall charge it contains is known as its electric potential.
Given parameters:
Distance between proton and electron: d = 0.03 m.
Let, at that point the speed of the electron be v.
So from conservation of energy:
Kinetic energy of electron + potential energy of electron = 0
1/2×mv² - 1/(4πε₀)(e²/d) = 0
⇒v = √(2e²/m(4πε₀)(d))
= √( 2 × (1.6 ×10⁻19)²× 9 × 10⁹/9.1093837 × 10⁻³¹×0.03) m/s
= 183.73 m/s.
The speed of electron be 183.73 m/s.
Learn more about potential energy here:
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Answers
Answer:
Approximately , assuming that
.
Explanation:
Under the assumptions, the package would start with an initial upward velocity of and accelerate downward at a constant
(negative because acceleration points downward.)
Right before landing, the package would be below where it was released. Hence, the displacement of the package at that moment would be
(negative since this position is below the initial position.)
The duration of the motion can be found in the following steps:
- Apply the SUVAT equation
to find velocity
right before landing.
- Divide the change in velocity
by acceleration to find the duration of the motion.
Rearrange the SUVAT equation to find
, the velocity of the package right before reaching the ground. Notice that because the package would be travelling downward, the value of
should be negative.
.
Subtract the initial velocity from the new value to find the change in velocity. Divide this change in velocity by acceleration (rate of change in velocity) to find the duration of the motion:
.
Answers
Solar energy is energy that comes from the heat from the sun.
Wind energy is the energy that is generated from the wind.
Geothermal energy energy is the energy that comes from the heat from the earth.
Solar, wind, and geothermal energy sources are all renewable. They derive their energy from natural processes that replenish themselves over time.
What is true for solar, wind, and geothermal energy?
There are a few things that are true about solar, wind, and geothermal energy.
Renewable energy sources include solar, wind, and geothermal power. They get their energy from natural processes that grow back eventually. Solar energy comes from the sun, wind energy comes from the movement of air, and geothermal energy comes from heat inside the Earth.
They are all environmentally friendly which means that it doesn't harm the environment. Solar, wind, and geothermal energy sources are better for the environment than fossil fuels. They release very little greenhouse gases when they are being used, which helps to prevent climate change and make the air cleaner.
Learn more on geothermal on brainly.com/question/1197584
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