Answer:
1) which planet's orbit was Kepler first studying when he began to developed his laws of orbital motion? Answer: Mars
2) which is the best description of Earth's orbit? Answer: almost circular
3) which orbital shape did most scientists in the early 1600s think the planets of our solar system have? Answer: circular
4) which of these describes Kepler's third law of orbital motion? Answer T^2 OX a^3
5) which statement describes Kepler's third law of orbital motion? Answer The square of orbital period is proportional to the cube of the semi-major axis.
Explanation:
I just took the connexus quick check and got a 100%
T2 ∝ a3 is the relation that describes Kepler’s third law of orbital motion, therefore the correct answer is option C.
What are Kepler's laws of planetary motion?There are three laws of Kepler as follows,
The orbit of the planet is elliptical and the sun is present at one of the two foci of the elliptical route followed by the rotating planet.
A line segment linking a planet and the Sun covers equal regions throughout equal intervals of the time period.
The semi-major axis length of an elliptical planet's orbit is equal to the square of the planet's orbital period.
T2 ∝ a3 is the relation that describes Kepler’s third law of orbital motion,
Thus, the correct answer is option C.
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A student's computational model of a falling object does not account for air flow. Which of the following statements is true? (1 point)
1. This computational model must be redone because this simplification will increase the amount of computational power needed for this program.
2. This computational model must be redone because computational models should not include simplifications.
3. This is a simplification, which will create inaccuracies, but computational models of complex systems often include simplifications 4. This computational model is strong because simplifications can make computational models more accurate.
Option 3. This is a simplification, which will create inaccuracies, but computational models of complex systems often include simplifications.
A student's computational model of a falling object does not account for air flow is " this is a simplification, which will create inaccuracies, but computational models of complex systems often include simplifications".
What is computational models?Using computers to simulate and investigate complicated systems utilizing mathematics, physics, and computer science is known as computational modeling. Numerous variables in a computational model describe the system under study.
In behavioral science, computational modeling aims to employ exact mathematical models to better understand behavioral data. Most frequently, the behavioral data are choices, but they can also be reaction times, eye movements, or other plainly visible behaviors, or even neurological data.
This is a simplification, which will create inaccuracies, but computational models of complex systems often include simplifications.
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types of circulatiom
how can a calculated height be greater than an actual height?
Answer:
mesuring heigh and weight is important
If an athletic field has 440 metre, how many rounds must an athlete do to cover a half marathon, I.e 21km and 200 metre
Answer:
53
Explanation:
Given:
perimeter of the field = 440 m
Half of the distance of marathon = 21 km and 200 meter
Step-by-Step Explanation:
21 km 200 meter
=
21200 Meter (1km= 1000M)
21200 ÷ 400
= 53
Question 5 (1 point)
You push a 34.2 kg box with a force to 97.7 N. At what rate will the box accelerate?
Your Answer:
Answer:
2.86 m/s²Explanation:
The acceleration of an object given it's mass and the force acting on it can be found by using the formula
[tex]a = \frac{force}{mass} \\ [/tex]
From the question
force = 97.7 N
mass = 34.2 kg
We have
[tex]a = \frac{97.7}{34.2} = 2.856725 \\ [/tex]
We have the final answer as
2.86 m/s²Hope this helps you
A skateboarder rolls off a horizontal ledge that is 1.32 m high and lands 1.88 m from the base of the ledge what was his initial velocity
A ball of mass 2 kg is being pulled sideways by a force 3 N to the right, and a force of 8N to the left - these are the only forces acting on it..
1.) What is the net force in the horizontal (x) direction?
2.) what is the acceleration in the horizontal (x) direction?
Answer:
Explanation:
1.) What is the net force in the horizontal (x) direction?
Fnet = 8 - 3 = 5 N left
2.) what is the acceleration in the horizontal (x) direction?
a = Fnet/m = 5/2 = 2.5 m/s² left
Calculate Speed The 2-kg metal ball moving at a speed of 3 m/s strikes a 1-kg wooden ball that is at rest. After the collision, the speed of the metal ball is 1 m/s.
Assuming momentum is conserved, what is the speed of the wooden ball?
Answer:
53466kg.
Explanatiokn:
Kinetic and Potential energy
The main difference between potential and kinetic energy is that one is the energy of what can be and one is the energy of what is. In other words, potential energy is stationary, with stored energy to be released; kinetic energy is energy in motion, actively using energy for movement.
If the ambient temp. is 75 F, what is it Centigrade?
Explanation:
We know
C/5 = F -32/9C/5 = 75 -32/9C/5 = 43/9C ≈ 25°CPlease help as soon as possible! I will give Brainliest! I just need to know the answers to this diagram.
Compared to a 1-kg block of solid iron, a 2-kg block of solid iron has the same:
A. Density
B. Mass
C. Volume
D. Inertia
The Correct choice is :
DensityA model of a plane in different parts of the atmosphere uses a scale of
1:2,000. If a plane flies at an altitude of 4,000 feet, how high above ground
level is the plane in the model?
A. 8 ft
B. 1/4,000 ft
C. 4ft
0
D. 2 ft
what’s 12cm in kilometers
plz help i will sure appreciate it
4. Shirley Bored sits in her seat in the English classroom. The force of gravity on Earth pulls
down on Shirley's body with 600 N of force. What is the direction and size of the reaction
force acting on Shirley?
Answer:
600 N upward
Explanation:
According to Newton's third law, for every action their is an equal and opposite reaction. The equal and opposite reaction to a downward force of magnitude 600 N is an upward force of magnitude 600 N
Which of the following is a true statement about computational models?
1. Computational models are more objective than humans, so computational models can be used to minimize bias.
2. Computers carry out the exact instructions you give them, whether they are the correct instructions or not.
3. Computational models, especially ones on computers with strong computational power, can fix errors in inputted equations.
4. Most computers have limits to computational power, with the exception of supercomputers.
The true statement about computational models is: 2. Computers carry out the exact instructions you give them, whether they are the correct instructions or not.
A computational model can be defined as the systematic use of computers to simulate real-complex systems, as well as studying them through the algorithmic or mechanistic use of various fields in science such as:
Mathematics.Computer science.Physics.A computer refers to an electronic device that is designed and developed to receive data (instructions) in raw form as an input, and then processes these data into an information (output) that is usable by an end user.
Generally, computers are designed to carry out the exact instructions an end user gives to them, whether those instructions are correct (right) or not (wrong).
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What is motivation in your own world
Answer:
Motivation is the process that initiates, guides, and maintains goal-oriented behaviors.
A plane moves 599 m northeast along a runway.
If the northern component of this displacement
is 89 m, how large is the eastern component?
The eastern component of the plane's displacement is 592.35 m.
The given parameters;
the resultant of the plane displacement = 599 mthe northern component of this displacement, Y = 89 mLet the eastern component of this displacement = XThe eastern component of the plane's displacement is calculated by applying Pythagoras theorem as follows;
X² + Y² = 599²
X² + 89² = 599²
X² = 599² - 89²
X² = 350880
X = √350880
X = 592.35 m
Thus, the eastern component of the plane's displacement is 592.35 m
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An 80-kilogram skier slides on waxed skis along a horizontal surface of snow at constant velocity while pushing with his poles.
What is the horizontal force pushing him forward?
Answer:
Special Relativity/Newtonian Physics
Explanation:
Well in Newtonian physics you could say your mass is pushing you down and the floor is pushing you up. But rather in Special relativity only to floor is pushing up on you.
In this theory the word inertial observer matters and proves several matters throughout science. So exploring is a huge important thing to do. A person cleaning the window falls, while doing so the person feel weightless while falling. Objects that fall down with the person would remain stationarily, relative to the person. Similar to a person in space. Far away from any large masses the person would be an inertial observer. With no acceleration the person is also not close to gravitational fields and all laws of physics in the person's reference frame. The man falling off the roof is an inertial observer too. Because of this both of the matters about the rocket man and the person falling off the roof are the same.But you would think that the person falling off the roof is accelerating. But the equivalence principle tells us wrong.
The equivalence principle has made it easy to prove both people in the situations are inertial observers. People watching would think that he is accelerating, but he is not. But he is accelerating? The equivalence principle tells us to focus on the experience of the observer and the person feels weightless so they are an inertial observer. If a person in Space comes across a planet, the person's rocket will start heading towards a planet. But the Space person would be oblivious. The person would not feel any acceleration. The spaceship would not sense any acceleration nor would it sense that it is turning. A person outside the spaceship may see the slight curving motion and the person inside would not notice until the instant it crashes into the planet. Explaining this is geodesics and spacetime it equally links and connects with this in an obvious and common way.
Spacetime is a model that makes 4D, it joins space and time, ‘Space-time’. Now people can say how it perfectly describes gravity with it’s queer way of curving.
But how does this happen without gravity? Space is 4D with width, breadth, height and time. There is a model called spacetime. Einstein along with many other people visualise it as woven along with time. Space- time. It curves by mass distribution. The person is still traveling in a straight line. Just straight through spacetime. It is traveling along the geodesics of spacetime. This is actually quite common, it is just an object travelling straight on a curved surface. Like an airplane travels straight to get quicker to a different place. But it appears curved because obviously the Earth is curved. So if you unfolded the earth the path would be curved, but the plane is still traveling in a straight line. Let’s also say you and your friend were standing on the equator. You are 1000 kilometers apart from your friend. As you move towards the north direction you would eventually meet with your friend. You are not being pushed by gravity but simple as that you are just traveling on the geodesics of Earth. Matter tells spacetime how to curve, Spacetime tells matter how to move-John Wheeler.
The man falling off the roof was accelerating so what happens if the rocket man accelerates?
Now once the rocket man accelerates the floor accelerates into rocket man. Objects remain stationary but the floor also accelerates into the objects. The situation is just like on earth except you are not an inertial observer because you do not feel weightless. The observer inside the rocket would feel a force pushing up on the feet. Same on earth. You are accelerating in order to remain stationary. However you can not see yourself accelerating. In Newton’s rule the force of Gravity would be pushing you down and the ground pushing you up. However in special relativity gravity does not exist so it’s just the force of the ground pushing up on you. Just like the rocket accelerating. You look like you are not accelerating up but only in your frame of reference. To measure your speed of acceleration you must get an inertial observer to measure your acceleration speed. Like the man falling off the roof. Let’s say you are in the building and the man falls off the roof. To him you would appear accelerating upwards. So you have to accelerate just to stand still. Why all objects fall at the same rate is a mystery to Newtonian Physics but it is not a mystery to Special relativity because the objects are not accelerating just the floor accelerating into it.
So I hope you understand now, I think you know what I'm getting at. Might of misunderstood your question.
What is the Validity measures of a basketball bouncing
This study was aimed at testing the construct validity of the basketball basic motion skills test instrument (ITK GDBB). The research used descriptive method of 3 basketball experts in the city of Cimahi; 3 experts are the expert in basketball. The instrument used was the ITB GDBB developed by Silvy (2019) consisting of top passing, bottom passing, top service, bottom service, chest passing, bounding passing, overhead passing, and leading ball (dribbling). This instrument consists of 76 items that cover 4 domains in basketball, namely chest pass, overhead pass, bound pass, and dribbling. The validity method used the construct validity of different power types. For the reliability method, it used the Kuder Ricardson (KR) and Objectivity analysis. The results of the construct validity analysis of a total of 76 items show that the score is ranged from 0.67 to 1.00. The construct validity value of 71 items in the basketball game is in the high category (= 1.00), 5 items are in the sufficient category, the relativity score is ranged from 0.75 to 0.98, and the objectivity score is ranged from 0.89 to 0.95. The conclusion is that this test instrument can be used as a standardized basic motion skill test for standardized large ball games for validity in basic motion skills in basketball games for grade VII junior high school students.
Energy can be transformed from one form to another. The diagram shows one such process.
Which energy transformation is represented in the diagram?
nuclear to thermal and radiant
nuclear to electrical and chemical
chemical to nuclear and radiant
chemical to electrical and nuclear
Answer:
b
Explanation:
Answer
nuclear to electrical and chemical
Explanation:
Energy can be transformed from one form to another. The diagram shows one such process.
Which energy transformation is represented in the diagram?
nuclear to thermal and radiant
nuclear to electrical and chemical
chemical to nuclear and radiant
chemical to electrical and nuclear and it is ovisly b
How strong is a neutron star's gravity.
Answer:
About a thousand billion times! Because neutron stars are so dense, they have intense gravitational and magnetic fields. The gravity of a neutron star is about a thousand billion times stronger than that of the Earth. Thus the surface of a neutron star is exceedingly smooth; gravity does not permit anything tall to exist.
It's crazy strong.
A hunter is practicing hitting a target that is down range. If the arrow leaves the bow at a
velocity of 26 m/s at an angle of 40 degrees above the horizontal,
a. Calculate how much time it takes for the arrow to return to the bow level.
b. Find out how far down range the arrow goes.
c. What is the maximum altitude the arrow reaches?
Answer:
What kind of bow Is he using
A student practicing for a cross country meet runs 250 m in 30 s. What is the average speed
Answer:8.3m/sec 30 sec,
Explanation:
A student practicing for a track meet, ran 250 m in 30 sec. a. What was her average speed? 250 m = 8.3 m/sec 30 sec.
I WILL GIVE YOU THE BRAINLEST ANSWER AND 100 POINTS
Choose two of the following technological devices. For each one, complete the required research and write about how the devices use wave behavior to transmit or capture information.
Microwave
Radio
Remote control
WiFi
X-ray
Gamma radiation
Device 1
Describe the device and its function.
What form of electromagnetic radiation does it use?
Describe the frequency and wavelength range of this type of electromagnetic wave.
Using the information above and details from your research, write a paragraph of five sentences or more explaining how the device uses the behavior and characteristics of the electromagnetic wave to function. Remember the writing tips from the lesson, and use facts and details to explain your topic sentence.
You must include citations for all reliable sources used. Include citations from three or more reliable sources.
Device 2
Describe the device and its function.
What form of electromagnetic radiation does it use?
Describe the frequency and wavelength range of this type of electromagnetic wave.
Using the information above and details from your research, write a paragraph of five sentences or more explaining how the device uses the behavior and characteristics of the electromagnetic wave to function. Remember the writing tips from the lesson, and use facts and details to explain your topic sentence.
You must include citations for all reliable sources used. Include citations from three or more reliable sources.
The way a microwave uses wave behavior to transmit information is for point-point communication for small-sized antennas.
The form of electromagnetic radiation it uses is electrical and mechanical energy.
What is a Microwave?This refers to the form of electromagnetic radiation that has a range of 1m-1mm.
The way a radio uses wave behavior to transmit information is for wireless transmission of sound, typically for maritime and aircraft travel.
The form of electromagnetic radiation it uses is a radio wave.r
The range of the radio is 100–10 km at 3–30 kHz
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Answer:
.
Explanation:
Please solve step by step
Answer:
F = 1 N
Explanation:
F = Gm₁m₂/r² + kq₁q₂/r²
F = (Gm₁m₂ + kq₁q₂) / r²
F = [6.674(10⁻¹¹)(0.50)(0.25) + 8.988(10⁹(5(10⁻⁶))(-2(10⁻⁶))] / 0.30²
F = 0.9986666667593611111...
F = 1 N
notice that the electrostatic force by itself results in an attraction of
0.99866666666666666666... N
The gravitational force is quite negligible in this example.
WHY IS NO ONE HELPING I'M BOUTTA GET REPORTED FR!!!!!!!!!!!!!!
what would happen to the weather if half of the human race just died off? would it get colder? why?
A block m1 rests on a surface. A second block m2 sits on top of the first block. A horizontal force F applied to the bottom block pulls both blocks at constant velocity. Here m1 = m2 = m.
(a)
What is the normal force exerted by the surface on the bottom block? (Use the following as necessary: m and g as necessary.)
Answer:
N = 2mg
Explanation:
Assuming the surface is horizontal
The surface must provide enough normal force to prevent the masses from accelerating in the vertical direction.
(a) The normal force exerted by the surface on the bottom block is N1 = 2mg.
Given that,
A block m1 rests on a surface. A second block m2 sits on top of the first block. A horizontal force F applied to the bottom block pulls both blocks at constant velocity. Here m1 = m2 = m.Based on the above information, we can say that the N1 is 2mg.
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help me with b and d please
A 65 kg diver stands still on a tower, 100 m above the water
(a) Calculate the gravitational potential energy of the diver, relative to the height of the water. Assume the gravitational field constant is 9.8 N/kg
(b) The diver reaches the surface of the water at a speed of 14 m/s. Calculate the diver's kinetic energy
(c) Compare your answers to (a) and (b). Explain your comparison using concepts learned in this course.
Assume there is no air resistance during the dive (d) Calculate the speed of the diver 5.0 m above the water.
Following are the solution to the given points:
Given:
[tex]\to mass(m)= 65\ kg\\\\\to h=10.0 \ m\\\\\to g=9.8 \ \frac{m}{s^2}[/tex]
To find:
gravitational potential energy(GPE)=?
kinetic energy(KE)=?
concept=?
v=?
Solution:
For point a:
[tex]\to GPE= mgh[/tex]
[tex]= 65 \times 10 \times 9.8\\\\ = 6370 \ J\\\\[/tex]
For point b:
[tex]\to KE=\frac{1}{2} m v^2\\\\[/tex]
[tex]=\frac{1}{2} \times 65 \times 14^2 \\\\=\frac{1}{2} \times 65 \times 14 \times 14 \\\\= 65 \times 14 \times 7 \\\\=6370\ J\\[/tex]
For point c:
As we've seen, there really is no force acting, and the mechanic KE: GPE is used. Because legitimate is conserved. Home energy loss means GPE must be equal to KE gain.
For point d:
A diver has risen 5 feet above the surface. As a result, according to the energy conservation law:
[tex]\to U_i + K_i= U_f + K_f\\\\ \to mg \times h + 0 = mg \times \frac{h}{2} + \frac{1}{2} m v^2\\\\ \to 9.8 \times 10 = 9.8 \times 5 + \frac{v^2}{2}\\\\\to 9.8 \times 10 - 9.8 \times 5 = \frac{v^2}{2}\\\\\to \frac{v^2}{2} =9.8( 10 - 5) \\\\\to v^2 =9.8( 10 - 5) \times 2 \\\\\to v^2 =9.8\times 5 \times 2 \\\\\to v^2 =98 \\\\\to v =98\ \frac{m}{s^2} \\\\[/tex]
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