r² = G.m₁m₂/F
r² = 6.67 x 10⁻¹¹ x 5.98 x 10²⁴ x 7.35 x 10²² / 1.98 x 10²⁰
r = 3.85 x 10⁸ m
How can you edit the light wave to increase the photosynthesis in the plant?
A) decrease the amplitude of the wavelength to increase the intensity
B) change the wavelength to the size of a bridge
C) increase the amplitude of the wavelength to increase the intensity
Answer: C) Increase the amplitude of the wavelenghth to increase the intensity.
Explanation:
What is an effect of gravity on objects on the surface of Earth? Check all that apply. Objects ""fall"" toward the center of Earth. Objects are pulled by Earth but do not pull on Earth. Objects accelerate at a rate of 9. 8 m/s each second. Objects travel at a rate of 9. 8 m/s toward the center of Earth. Objects are pulled by Earth more strongly than they pull on Earth.
Answer:
Objects are pulled toward earth
Objects travel at a rate of 9.8m/s
Explanation:
these are the only one that I know. sry :(
1. You serve a volleyball with a mass of 2.1 kg. The ball leaves your hand with a speed of 30 m/s. The ball has __________________ energy. Calculate it.
When two objects are in direct physical contact, heat is always conducted from the ________ object to the _______ object.
Answer:
1st blank: warmer 2nd blank: cooler
Explanation:
Heat energy always flows from the warmer object to the cooler object.
When you remove a battery and attach the terminals of the ohmmeter to the ends of the circuit, what is the resistance?
Answer: It is the act of measuring internal resistance.
Explanation:
It should be understood that when that action is exhibited, it is towards of measuring the internal resistance.
And it should be noted that, no matter how much or little load we attach to the battery, the voltage at the source's terminals will always stay the same.
The James Webb Space Telescope is positioned around 1.5 million kilometres from the Earth on the side facing away from the Sun. The telescope remains at this distance and orbits around the Sun with the Earth’s orbital velocity.
--Determine the angular velocity ω of the telescope as it orbits around the Sun.
--The centrifugal Fω and gravitational force FG are acting on objects orbiting the Sun: F =Fω−FG. Based on this, how much should the telescope accelerate towards or away from the Sun?
--Why is the orbit of the telescope stable nonetheless? What other forces need to be considered?
The angular velocity depends on the length of the orbit and the orbital
speed of the telescope.
Response:
First question:
The angular velocity of the telescope is approximately 0.199 rad/sSecond question:
The telescope should accelerates away by approximately F = 0.0005·mThird question:
The pulling force between the Earth and the satelliteWhat equations can be used to calculate the velocity and forces acting on the telescope?The distance of the James Webb telescope from the Sun = 1.5 million kilometers from Earth on the side facing away from the Sun
The orbital velocity of the telescope = The Earth's orbital velocity
First question:
[tex]Angular \ velocity = \mathbf{\dfrac{Angle \ turned}{Time \ taken}}[/tex]
The orbital velocity of the Earth = 29.8 km/s
The distance between the Earth and the Sun = 148.27 million km
The radius of the orbit of the telescope = 148.27 + 1.5 = 149.77
Radius of the orbit, r = 149.77 million kilometer from the Sun
The length of the orbit of the James Webb telescope = 2 × π × r
Which gives;
r = 2 × π × 149.77 million kilometers ≈ 941.03 million kilometers
Therefore;
[tex]Angular \ velocity = \dfrac{29.8}{941.03}\times 2 \times \pi \approx 0.199[/tex]
The angular velocity of the telescope, ω ≈ 0.199 rad/sSecond question:
Centrifugal force force, [tex]F_{\omega}[/tex] = m·ω²·r
Which gives;
[tex]F_{\omega} = m \cdot \dfrac{28,500^2 \, m^2/s^2}{149.77 \times 10^9 \, m} \approx 0.0054233 \cdot m[/tex]
[tex]Gravitational \ force, F_G = \mathbf{G \cdot \dfrac{m_{1} \cdot m_{2}}{r^{2}}}[/tex]
Universal gravitational constant, G = 6.67408 × 10⁻¹¹ m³·kg⁻¹·s⁻²
Mass of the Sun = 1.989 × 10³⁰ kg
Which gives;
[tex]F_G = 6.67408 \times 10^{-11} \times \dfrac{1.989 \times 10^{30} \times m}{149.77 \times 10^9} \approx 0.00592 \cdot m[/tex]
Which gives;
[tex]F_{\omega}[/tex] < [tex]F_G[/tex], therefore, the James Webb telescope has to accelerate away from the Sun
F = [tex]\mathbf{F_{\omega}}[/tex] - [tex]\mathbf{F_G}[/tex]
The amount by which the telescope accelerates away is approximately 0.00592·m - 0.0054233·m ≈ 0.0005·m (away from the Sun)
Third part:
Other forces include;
The force of attraction between the Earth and the telescope which can contribute to the the telescope having a stable orbit at the given speed.Learn more about orbital motion here:
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Why are metals so ductile?
A) The atoms form regular crystal arrangements, allowing them
to pack closely together.
B) The atoms form long chains that are very difficult to break.
C) The atoms can slide past each other while still remaining
attracted to each other electrically.
D) The atoms share electrons in a way that allows them to move
easily from one atom to another.
Answer:
i think .A
Cari on learning
It is the obligation of researchers to review and comment on the research of other researchers. Please select the best answer from the choices provided T F.
Thorough inquiry and analysis of materials and sources to establish facts and reach new findings are known as resarch. False is the best answer from the choices provided
What is research?Thorough inquiry and analysis of materials and sources to establish facts and reach new findings.
It is false that researchers are required to evaluate and remark on the work of other researchers. It is not their responsibility - they do not have to do it,
But they may if they want to and if the author allows them to. However, they are not compelled to do so by law or anything else. They do it simply out of goodwill or genuine interest.
Hence False is the best answer from the choices provided.
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Answer: false
Explanation:
HURRY!!!
Which would result in an increase in the attractive force between two magnets?
A. The north poles of two magnets move closer together.
B. The south poles of two magnets move away from one another.
C. The north pole of one magnet moves closer to the south pole of another
magnet.
D. The north pole of one magnet moves away from the south pole of another
magnet.
A "phaser" blast form the starship "ENTERPRISE" sends out a
light burst with a wavelength of 636 nanometers.
(nm=1. 0x10-9m) What is the frequency of the light beam?
The frequency of the light beam is 4.72 x 10¹⁴ Hz.
Frequency of the light beamThe frequency of light beam and wavelength of light is related in the following equations;
c = fλ
where;
c is the speed of light = 3 x 10⁸ m/sf is the frequencyλ is the wavelengthf = c/λ
f = (3 x 10⁸) / (636 x 10⁻⁹)
f = 4.72 x 10¹⁴ Hz
Thus, the frequency of the light beam is 4.72 x 10¹⁴ Hz.
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If two hot-air balloons are filled at the same time, but one is filled with warm air and one is filled with hot air, which
balloon do you think will rise higher?
The balloon with hot air
The balloon with warm air
Answer:
the hot air balloon
Explanation:
Warmer air is less dense than cooler air, so it rises faster compared to a cooler hot air ballon.
The balloon filled with hot air will rise higher because of its lesser density.
What is meant by density ?Density of an object is defined as the mass per unit volume of the object. It is considered as the measure of amount of substance in a give space.
Here,
Two hot-air balloons are filled at the same time. Among them, one is filled with warm air and the other one is filled with hot air.
When the balloons are released to go up, the balloon filled with hot air will rise higher. This is because of the difference in their density.
When the hot air is filled, its temperature is increased. Therefore the volume also increases which will result in the decreased density of the hot air balloon.
The balloon filled with hot air will be less denser when compared to the other. The buoyancy of the balloons is affected by their densities.
The hot air in the balloon is less denser than the cool air. So, the buoyancy of the hot air balloon will be more than that with warm air. As a result, the balloon filled with hot air will rise higher in the air.
Hence,
The balloon filled with hot air will rise higher because of its lesser density.
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Identify and describe two changes of state that release energy.
How do waves interact with our senses?
Answer:
well sound waves interact with our ears and light interacts with our vision
Explanation:
Answer:
Hearing employs air or water waves, whereas sight uses the electromagnetic spectrum. The electrical and chemical neural impulses are sent through the human auditory nerve to the brain once the mechanical energy of the sound waveform is converted into neurological stimulation.
Most nuclei contain a small dense region known as the.
Answer:
NUCLEOLUSMost nuclei contain a small, dense region known as the nucleolus2.2 Why is it important to study?
Answer:
Because Studying helps us for a better life.
Explanation:
If we study well enough we can pass entrance exams for really nice colleges and universities, from that we can learn med school IIT, etc.
From doing that we can get a stable job and earn money then in the end, relax :)
A box weighing 30 N is pushed a distance of 5 meters. How much work was done?
When a golf ball is hit, it travels at 41 meters per second. The mass of a golf ball is 0.045kg. Calculate the kinetic energy of the golf ball.
Answer:
75.645 J
Explanation:
The kinetic energy is related to the mass and velocity by the formula ...
KE = 1/2mv²
For the given mass of 0.045 kg, and velocity of 41 m/s, the kinetic energy is ...
KE = 1/2(0.045 kg)(41 m/s)² = 75.645 J
__
The unit of energy, joule, is a derived unit equal to 1 kg·m²/s².
Ideal gases are often studied at standard ambient temperature and pressure (satp). The international union of pure and applied chemistry (iupac) defines satp to be t = 25° c and p = 100 kpa.
This problem provides information about the pressure and temperature ideal gases are studied at. The answer to the questions are that all molecules have the same density, 2.43x10²⁵ mol/m³ and 2.43x10¹⁹ mol/cm³.
Idela gasesIn science, we can start studying gases with the concept of ideal gas, as they do not collide one to another and are assumed to be perfect spheres with no relevant interactions.
In such a way, one can conclude that the number density of all ideal gasses at SATP is the same, as they are assumed to be perfect spheres with equal volumes per molecule.
Moreover, when calculating the number of molecules per cubic meter, one must use the ideal gas equation as:
[tex]PV=nRT\\\\\frac{N}{V}= \frac{P*N_A}{RT}[/tex]
And plug in the numbers we are given:
[tex]\frac{N}{V}= \frac{100kPa*\frac{1000Pa}{1kPa}*6.022x10^{23}molec/mol}{8.314\frac{Pa*m^3}{mol*K}*298K}=2.43x10^{25}molec/m^3[/tex]
Lastly, we can calculate the molecules per cubic centimeter by performing the following conversion:
[tex]2.43x10^{25}\frac{molec}{m^3}*(\frac{1m}{100cm} )^3\\ \\=2.43x10^{19}\frac{molec}{cm^3}[/tex]
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What is the coolest thing one earth to you?!
Answer:
[tex] \huge \mathtt \gray{answer}[/tex]
The HNSspace travelconcordeiPhoneastronautsJames bondHope its help
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A 0.045-kg golf ball is dropped from rest. Is dropped from a height of 1.3m and comes back up at a height of .7m
The time to drop from 1.3m and velocity after height at 0.7 mis mathematically given as
t1 = 0.515 sec
v0 = 3.7m/s
What is the time to drop from 1.3m and velocity after height at 0.7?Question Parameters:
A 0.045-kg golf ball is dropped from rest.
Is dropped from a height of 1.3m and comes back up at a height of .7m
Generally, the equation for the time to drop from 1.3m is mathematically given as
yf - yi = vi t + a t^2/ 2
Therefore
0 - 1.3 = 0 - 9.8 t^2 /2
t1 = 0.515 sec
Hence, after its max height is 0.7 m,
vf^2 - vi^2 = 2 a (yf - yi)
0^2 - (v0)^2 = 2(-9.8)(0.7 - 0)
v0 = 3.7m/s
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What is the momentum of a ball that weighs .142 Kg and has velocity of 100 meters per second?
Answer:
710 newtons
Explanation:
KE=1/2*m*v^2
1/2*.142*100^2
1/2*.142*10000
1/2*1420
710
What is a fuse??? what it is made up of??
A fuse is a short and thin piece of wire of a uniform area of cross section.
It is made up of a material of low melting point so that it may easily melt due to overheating when the current in excess to the prescribed limit passes through it.Further, it should have high resistance so as to produce sufficient heat to melt it. Generally an alloy of lead and tin is used as the material of the fuse wire because its melting point is low (=250°) and specific resistance is high.Explanation:
Hope it helps you!!A fuse is a safety device in an electric plug or circuit. It contains a piece of wire which melts when there is a fault so that the flow of electricity stops.
The fuse wire is made up of Sn (tin) and Pb (lead) alloy because of its high resistance and low melting.
First attachment shows fuse arrangement normally used in the houses and second attachment shows a cartridge type of fuse that is used mainly in costly appliances of our home like an air conditioner, geyser, etc.
Explanation:
Hope it helps you!!Which property of matter describes a continued existing state of rest or uniform motion in a straight line?(1 point)
friction
friction
gravity
gravity
inertia
inertia
uniformity
uniformity
Answer:
inertia
Explanation:
law of inertia describe it
It is the inertia of the body which describes the existing state of rest or uniform motion in a straight line.
What is inertia?The inertia of the body is defined as If the body is at rest then it will be at the same state until an external force is not applied to it.
Similarly, If the body is in motion then it will remain in motion until and unless an external effort is not applied to stop it.
For example, if the football is placed at the rest on the ground it will never move from the same position until an external force is not applied.
Similarly, if the car is moving at a certain speed then it will only stop if the brakes are applied and if there is not any friction it will never stop.
Thus the inertia of the body describes the existing state of rest or uniform motion in a straight line.
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The specific heat capacity of aluminium block is 9130 per kg per °C and its
temperature is increased by 10 °C. 4565 J of energy is transferred. Calculate the
mass of the aluminium block.
Answer:
Q
Explanation: you don't need to convert °°C to K Temperature difference is the same on both scales
Help me with this please. :))
Which factors affect the flow of electric charge? Check all that apply.
The factors that affect the flow of electric charge will be Voltage and resistance.
What are the factors which affect the flow of the charge?The flow of the charge depends upon the voltage because the voltage is responsible to push or it applies the force on the particles to flow.
For example, whenever your battery gets discharged what happens is the potential difference of voltage becomes zero.
So there will not be enough force remaining in the battery to flow the charge but when we charge the battery then it regains its voltage and again pushes the charges to flow.
Now the resistance acts just opposite to the voltage because it restricts the flow of the charges so if the resistance is more then more voltage is required to flow the charge.
Thus the factors that affect the flow of electric charge will be Voltage and resistance.
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How are Fahrenheit temperatures converted to Celsius temperature
dentify three long-term effects of anorexia A. Obesity B. Starvation C. Sensitivity to cold D Hair loss
answer A ,B ,D
answer:
a. obesity, b. starvation, and d. hair-loss.
Three long-term effects of anorexia is A. Obesity B. Starvation D Hair loss, Hence option A B D is correct.
What is obesity ?Obesity is a medical condition, often considered a disease, in which excess body fat has accumulated to the point that it is threatening health. Obesity is defined as having a body mass index (BMI) of more than 30 kg/m2 (a person's weight divided by the square of the person's height); overweight is defined as having a BMI of 25-30 kg/m2. Some East Asian countries calculate obesity using lower values. Obesity is a leading cause of disability and is linked to a variety of illnesses and ailments, including cardiovascular disease, type 2 diabetes, obstructive sleep apnea, some cancers, and osteoarthritis.
Individual, social, and environmental factors all contribute to obesity. Diet, physical activity, mechanization, urbanization, genetic vulnerability, drugs, mental problems, and economic policies are some of the recognized factors.
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What do electric charges have in common with magnetic poles?
Answer:
Electric charges are similar to magnetic poles because they both attract and repel without touching.
If the distance between slits on a diffraction grating is 0. 50 mm and one of the angles of diffraction is 0. 25°, how large is the path difference? nm How many orders of bright lines does this equal for red light with a wavelength of 650 nm? wavelengths.
The distance the wave traveled between the two-point is the path difference. The path difference will be 2200 nm and 3 orders of bright lines do this equal red light with a wavelength of 650 nm.
What is diffraction grating?A diffraction grating is a type of optical instrument obtained with a continuous pattern. The pattern of the diffracted light by a grating depends on the structure and number of elements present.
The equation of diffraction grating is given as
[tex]\rm n\lambda=dsin\phi\\\\\rm n\lambda=0.50\times10^{-3}\times sin(0.25) \\\\ n\rm \lambda=2.18\times10^{-6} \;m \\\\\rm n\lambda=2200\;nm[/tex]
Hence the path difference will be 2200 nm.
[tex]\rm n\lambda=2200\;nm \\\\\rm n\times650=2200 \\\\\rm n=3.38[/tex]
n= 3
Hence 3 orders of bright lines do this equal red light with a wavelength of 650 nm.
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