Answers
Answer:
Explanation:
The rocky planets include Mercury, Venus, Earth, and Mars. they are made up of rocks and metals and have solid surfaces.They are the closest four planets to the Sun. The gas giants are Neptune, Uranus, Saturn, and Jupiter. they are further from the sun and are in the outer part of the solar system. I hope this helps!
Related Questions
Plants are eaten by grasshoppers, which are eaten by mice, which are eaten by snakes.
Answers
Answer:
food chain / web lol? was this a question?
Martha, a first-grade teacher, is worried that if doesn't stay In at work to grade papers her principal will think she is lazy She is also worried that if she stays late at work her partner will be angry. This of conflict is known as
Answers
Answer:
Character vs self
Explanation:
The reason is because Martha is thinking to much about the negative things and it is making her feel like she is fighting her own body for control.
Make a prediction that answers the question in the purpose:
“How does time affect the temperature of water?”
(Ex-“If we use a ramp, then the ball will roll faster down the ramp because gravity has more time to do work on the ball.”)
Im not good at these, please help quickly.
Answers
II. What examples can you find in your home that are examples of kinetic and potential energy (name two for each type
of energy)?
11. Kinetic:
12. Kinetic:
13. Potential
14. Potential:
Answers
Answer:
11. A door accelerating when pushing it.
12. A person sliding along the floor.
13. Water dropping from the faucet.
14. Courtains descending when loosening them.
Explanation:
For kinetic energy, any example that does not move horizontally will do. Something accelerating or decelerating is a good example (Ek=1/2mv^2, where v is velocity).
For potential energy try to think of things moving vertically. Potential energy comes from the height of an object (Ep=mgh, where h is height).
Notice that example 13 and 14 represent potential energy turning into kinetic energy, height becomes lower, so velocity increases.
A spring has a constant of 875 N/m. What hanging mass will cause this spring to stretch 4.5 m?
Answers
Answer:
8) A hanging 7.5 kg object stretches a spring 1.1 m. What is the spring constant? 1 . 1 66. 82 NIMO 9) A spring has a constant of 875 N/m. What hanging mass will cause this spring to stretch 4.5 m? Iouliply then divide 875 X 4. 2- - (4 04. 7919) 10) A spring with a spring constant of 25 N/m is stretched 65 cm. What was the force used? 11) A 25 N force stretches a spring 280 cm. What was the spring constant? 12) A 75 N force stretches a spring 175 cm. What was the proportionality constant? 8) 66.82 N/m 9) 401.79 kg 10) 16.25 N 11) 8.93 N/m 12) 42.86 N/m
Explanation:
A spring has a constant of 875 N/m. and the mass which will cause this spring to stretch 4.5 meters is 401.78 kg.
What is Spring constant?The spring constant is a characteristic of a spring which is defined as the ratio of the force affecting the spring to the displacement which is caused by that force. The SI unit of spring constant is N.m⁻¹ (Newton per meter).
The spring constant is:
F = -k/ x
where, k is the spring constant
F denotes the force,
and x denotes the change in the length of the spring.
k = 875N/m
x = 4.5m
We know that
Kx = mg
m= kx/ g
m = 875 × 4.5/ 9.8
m = 401.78kg
Therefore, the mass which will cause this spring to stretch 4.5 meters is 401.78 kg.
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Scientists have made predictions about the universe today based on the big bang theory. Observations that match these predictions support the big bang theory. Which of the following observations have scientists made that provides evidence of the big bang?
A. Light from the moment of the big bang has been observed.
B. The percentages of hydrogen and helium match the predicted percentages.
C. Galaxies are moving toward each other as predicted by the big bang theory.
D. Many galaxies that are similar to the Milky Way have been observed.
Answers
Answer:
the answer is b
Explanation:
Answer:
b
Explanation:
I just did it on a p e x
Can a solution be separated by filtration?
Answers
Answer:
Filtration is a method for separating an insoluble solid from a liquid. When a mixture of sand and water is filtered: the sand stays behind in the filter paper (it becomes the residue ) the water passes through the filter paper (it becomes the filtrate )
Explanation:
Listo!
Why is NEWTON'S First Law of Motion often called the LAW OF INERTIA?
Answers
Answer:
According to newtons first law of motion an object remains in its state of rest or motion in a straight line unless an external unbalanced forces acts upon it. This is the reason why Newtons first law of motion is often called the LAW OF INERTIA
Give an example of speed making a difference in the amount of kinetic energy. Tell how you know that kinetic energy amount is different in your example.
Please help this is due today
Answers
Answer:
1. A car moving 40 mph has four times as much kinetic energy as one moving 20 mph, while at 60 mph a car carries nine times as much kinetic energy as at 20 mph. Thus a modest increase in speed can cause a large increase in kinetic energy.
PLZ MARK BRAINLIEST THANK AND FIVE STAR:)
Answer:
a car moving 40mph has four times as much kinetic energy as one moving 20 mph, while at 60 mph a car carries nine times as much kinetic energy as at 20 mph.
if you need any more info just dm me
Juan rides his horse with a constant
speed of 18 km/h. How far can he travel
in 1/2 hour?
Answers
Answer:
He traveled 9km
Explanation:
To do this problem you need to use the equation which is Speed= distance/time and this problem gives you the speed which is 18 km/h and it gives you the time 1/2 hour so you write the equation 18= d/ 1/2 which his distance is 9km
Which is a unit of momentum?
A) N-m/s
B) kg-m/s
C) kg-m/s2
D) N-m/s2
please hurry i need help asap, will mark brainliest
Answers
Answer:
unit of momentum is kgm/s2
The unit for momentum can be Newton-second (Ns). In the CGS system, if the mass is in grams and the velocity in centimeters per second, then the unit of momentum will be gram-centimeters per second (g⋅cm/s).
What is momentum ?"Momentum, product of the mass of a particle and its velocity. Momentum is a vector quantity; i.e., it has both magnitude and direction. Isaac Newton's second law of motion states that the time rate of change of momentum is equal to the force acting on the particle. See Newton's laws of motion."
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Tafu is working with subatomic particles in the physics lab. a positron is traveling in a straight line down the particle accelerator. tafu models its position with the function p(t)= t2 t â 1 where t>1. in the limit calculations below, if you need to use -â or â, enter -infinity or infinity. (a) calculate the limit
Answers
Answer:
Infinity
Explanation:
When you have a limit approaching infinity one method you can use is to remember that the highest power dominants all of the other ones so when we have (t^2)/t-1 like in your problem, we see that t^2 has the highest power of 2 so if that's going to infinity and it's not being divided by any powers higher than it will just be inifinity.
We have that for the Question, it can be said that in the limit calculations below, if you need to use -â or â, enter -infinity or infinity. the limit is
[tex]Lim_{t->\infty} p(t)= \infty[/tex]
From the question we are told
Tafu is working with subatomic particles in the physics lab. a positron is traveling in a straight line down the particle accelerator.tafu models its position with the function
p(t)= t2 t â 1 where t>1.
in the limit calculations below, if you need to use -â or â, enter -infinity or infinity.
(a) calculate the limit
Generally the equation for the Question is mathematically given as
[tex]p(t)=\frac{t^2}{t-1}\\\\Therefore\\\\For Lim_{\infty}\\\\We have\\\\ Lim_{t->\infty} p(t)= Lim_{t->\infty}\frac{t^2}{t-1}\\\\[/tex]
Since, the equivalent degree of numerator (t^2) is greater than that of the denominator
[tex]Lim_{t->\infty} p(t)= \infty[/tex]
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Which of the following statements is true?
A.
Most metals and nonmetals conduct electricity well, but metals cannot conduct heat.
B.
Most nonmetals can be drawn into a wire, while metals would break apart.
C.
Most metals and nonmetals conduct heat well, but nonmetals cannot conduct electricity.
D.
Most metals can be drawn into a wire, while nonmetals would break apart.
Answers
Answer:
D. Most metals can be drawn into a wire, while nonmetals would break apart
Explanation:
The correct statement from the given choices is that most metals can be drawn into a wire while non-metals would break apart.
Metals are malleable due to the presence of metallic bonds between their atoms. The large electron cloud due to the electropositivity of metals allows for the wide range of physical properties observed in them.
Metals are also conductors because they have free mobile electrons. Therefore they can conduct heat and electricity.Non-metals are brittle and cannot conduct neither heat nor electricity.
Emily roller skates with a constant speed
of 8 miles per hour. How far can she travel
in 3 hours? D = SxT
Answers
Answer:
She can travel 24 miles in 3 hours.
HELP PLS 100 POINTS TAKING TEST RN
Suppose you are in a car that is going around a curve. The speedometer reads a constant 30
miles per hour. Which of the following is NOT true?
You and the car are accelerating.
Your speed is constant.
Your velocity is constant.
Your acceleration is constant.
Answers
Answer:
sorry I hate when people press your question and answer with a fake answer for points, however you said it was 100 points and it's not even close lol but it is "your speed Is constant" that is not true
Answering the following questions will help you to focus on the outcomes of these experiments:
How does the length to height ratio (the IMA) of trial 1 compare to trial 2?
Why is the actual mechanical advantage less than the ideal mechanical advantage in each of the trials?
If a machine was 100% efficient, how would the AMA compare to the IMA?
Write a summary paragraph discussing this experiment and the results. Use the following questions and topics to help guide the content of your paragraph.
According to your data, was your hypothesis correct? (Be sure to refer to your data when answering this question.)
Summarize the conclusions that you can draw from this experiment. Use the questions above to guide your ideas.
Summarize any difficulties or problems you had in performing the experiment that might have affected the results. Describe how you might change the procedure to avoid these problems.
Give at least three examples from everyday life where an inclined plane is used to reduce the effort force needed to accomplish a task.
Answers
Answer:
Answering the following questions will help you to focus on the outcomes of these experiments:
1.How does the length to height ratio (the IMA) of trial 1 compare to trial 2?
= Trial 1 is 5.09, and Trial 2 is 3.25. Trial 1 is higher because the height of the trial is less than trial 2.
2.Why is the actual mechanical advantage less than the ideal mechanical advantage in each of the trials?
= It is because the machine's ideal mechanical advantage reflects the increase or decrease in force that would have occurred without friction. It is always greater than the actual mechanical advantage because all machines have to overcome friction.
3.If a machine was 100% efficient, how would the AMA compare to the IMA?
= In any real machine, some of the efforts are used to overcome friction. Thus, the resistance force ratio to the effort (AMA) is less than the (IMA).
A frictionless machine would have an efficiency of 100%.
how much energy must be absorbed by water with a mass of 0.5kg in order to raise the tempature from 30c to 65c
Answers
Answer:
62760J
Explanation:
Given parameters:
Mass = 0.5kg = 500g
Initial temperature = 30°C
Final temperature = 65°C
Unknown:
How much energy is absorbed by the water = ?
Solution:
To solve this problem, we use the expression below:
H = m C Δt
H = m x C x (t₂ - t₁ )
m is the mass
C is the specific heat = 4.184J/g°C
t₂ is the final temperature
t₁ is the initial temperature
So;
H = 500 x 4.184 x (65 - 30) = 62760J
A stationary 10 kg object is located on a table near the surface of the earth. The coefficient of kinetic friction between the surfaces is 0.2. A horizontal force of 40 N is applied to the object.
Answers
Answer:
2.04m/s²
Explanation:
Complete Question
A stationary 10 kg object is located on a table near the surface of the earth. The coefficient of kinetic friction between the surfaces is 0.2. A horizontal force of 40 N is applied to the object. Find the acceleration of the object.
According to Newtons second law;
\sum F_x = ma_x
F_m - F_f = ma_x
Fm is the applied force
Ff is the frictional force
m is the mass
a is the acceleration
Substitute the given values
40N - nmg = 10a
40 - 0.2(10)(9.8) = 10a
40 - 19.6 = 10a
20.4 = 10a
a = 20.4/10
a = 2.04m/s²
Hence the acceleration of the object is 2.04m/s²
f. It is easier to pull a lawn roller than to push it, why?
Answers
Answer:
because you use more force to push than to pull (well it depends how heavy it is)
Explanation:
Most electricity comes from the burning of
A. Fossil fuels B. Trash C. Wood D. None of the above
Answers
Answer:
(A) Fossil Fuels
Answer:
Fossil Fuels
Explanation:
That’s what CK12 told me
difference between input work and output work with table
Answers
Answer:
Explanation:
Input work is the work done on a machine as the input force acts through the input distance. ... Output work is the work done by a machine as the output force acts through the output distance. The machine does to the object to increase the output distance.
How much power does an Ox pulling a plow 20 m cross a field, exerting 120J of work over a period of 15 s?
Answers
Answer:
8W
Explanation:
Given parameters:
Distance covered = 20m
Work done = 120J
Time = 15s
Unknown:
How much power does the Ox exerts = ?
Solution:
Power is the rate at which work is being done
Power = [tex]\frac{Work done }{time}[/tex]
Power exerted by ox = [tex]\frac{120}{15}[/tex] = 8W
Do all metals stick to magnets? Give an example. I NEED HELP FASTT
Answers
Answer:
No
Explanation:
Not all metals stick to magnets. Like aluminum. if you were to stick a magnet on to an aluminum it would fall off.
What happens when stress builds up at faults?
A. Energy is absorbed
B. Rock can bend and break
C. Plates form on the lithosphere
D. earthquakes develop at earths surface
Answers
Answer:
The answer is D because when the faults move that is the tectonic plates moving. So earth quakes will be forming when the fault moves.
Explanation:
Which part of the electromagnetic spectrum is typically used to make images based on the temperatures of objects?
X-rays
radio waves
infrared light
visible light
Answers
Answer:
Which part of the electromagnetic spectrum is typically used to make images based on the temperatures of objects?
X-rays
radio waves
infrared light<<<----- CORRECT
visible light
Explanation:
Edge 2021
Infrared light is typically used to make images based on the temperatures of objects.
What is meant by electromagnetic spectrum?The range of all EM radiation arranged from high to low frequency (short to long wavelength) according to their frequency or wavelength. is known as the electromagnetic spectrum (EM).
Here,
Similar to visible light, X-rays are a type of electromagnetic radiation. X-rays have a higher energy than light, on the other hand, and can penetrate most materials, including the human body.
Images of inside body tissues and structures are produced using medical x-rays.
Electromagnetic energy in the infrared region of the spectrum can be seen by them. There is a relationship between an object's temperature and the electromagnetic radiation it releases since infrared radiation is strongly related to object temperature.
Hence,
Infrared light is typically used to make images based on the temperatures of objects.
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Is gravitational energy a form of kinetic energy or potential energy? Why do you think that?
Please help due today!!
Answers
Answer:
When something is lifted, work is done on the object against the pull of gravity. This work is converted to a form of potential energy called gravitational potential energy. When the item falls towards Earth like an apple from a tree, gravitational potential energy is converted into kinetic energy.
The tensions in the rope are 12 n and 10 n . What is the angular acceleration of the pulley?
Answers
Answer:
[tex]\mathbf{\alpha = 16.06 \ rad/s^2}[/tex]
Explanation:[tex]A \ frictionless \ pulley, \ whic h\ can \ be \ modeled \ as \ a \ 0.83 k g \ solid \ cylinder \ with \ a \ 0.30 \ m \ radius,[/tex] [tex]\ has \ a \ rope \ going \ over \ it[/tex] [tex]The \ tensions \ in \ the \ rope \ are \[/tex] [tex]12 n \ and \ 10 n . \ What \ is \ the \ angular \ acceleration \ of \ the \ pulley?[/tex]
[tex]From \ the \ given \ information:[/tex]
[tex]The \ moment \ of \ inerti a \ of \ a \ solid \ cylinder[/tex] [tex]I = \dfrac{1}{2}mr^2[/tex]
[tex]I = \dfrac{1}{2}(0.83)(0.3)^2[/tex]
[tex]I = 0.03735 \ kg \ m^2[/tex]
[tex]The \ net \ torque = F_1(r) - F_2(r) \\ \\ = 12(0.3) - 10(0.3) \\ \\ = 0.6 \ N.m[/tex]
[tex]Torque (T) = moment \ of \inertia (I) \times angular \ acceleration ( \alpha)[/tex]
[tex]\alpha = \dfrac{T}{I}[/tex]
[tex]\alpha = \dfrac{0.6 \ Nm}{0.03735 \ kg \ m^2}[/tex]
[tex]\mathbf{\alpha = 16.06 \ rad/s^2}[/tex]
An elephant kicks a 2.5 kg rock that is initially at rest. The
net force on the rock varies with time as shown below.
What is the rock's change in momentum between 0 ms
and 20 ms?
Answers
0.20Answer:
Explanation:
There are several ways to model a compound. One type of model is shown.
What is the chemical formula for the molecule represented by the model?
CHO
C4H9O2
C4H8O
C3H8O2
Answers
Answer:
What is the chemical formula for the molecule represented by the model?
[tex] →CHO\\ →C_4H_9O_2✓ \\→C_4H_8O \\ →C_3H_8O_2[/tex]
2) C4H9O2 is the right answer.Your welcome
Good luck
HELP PLS MARKING BRANLIST 100 Pts TAKING TEST RN
A sprinter runs the 50 m dash in 5.6 seconds. What is the sprinter's speed?
280 m/s
0.11 m/s
44.4 m/s
8.93 m/s
