Answers
Answer:
0.76mExplanation:
We know that the expression for the energy stored in a spring is given as
E= 1/2kx²
Given data
K=85N/m
E=25j
Substituting we have
25= 1/2(85)*x²
2*25=85x²
x²=50/85
x²=0.588
x=√0.588
x=0.76m
the spring must be compressed to 0.76m
Related Questions
Why do the other bulbs go dark when one bulb is removed in the series circuit but the other bulbs do not go dark when one bulb is removed in the parallel circuit?
Answers
Answer:
I think this
One bulb burning out in a series circuit breaks the circuit. In parallel circuits, each light has its own circuit, so all but one light could be burned out, and the last one will still function.
The perihelion (Rp) of Mars’ orbit is 1.381 AU while its aphelion (Ra) is 1.666 AU. Using the relation Rp = a(1 - e) and Ra = a(1 + e),where a is the length of the semi-major axis and e is the eccentricity of the orbit, calculate a and e for Mars’ orbit around the Sun. Show all of your work
Answers
ANSWER:
a = 1.523
e = 0.09353
STEP-BY-STEP EXPLANATION:
From the statement we can establish the following two equations:
\(\begin{gathered} R_p=a\mleft(1-e\mright)\rightarrow a=\frac{R_p}{1-e}\text{ (1)} \\ R_1=a\mleft(1+e\mright)\rightarrow a=\frac{R_a}{1+e}\text{ (2)} \end{gathered}\)We equate both equations and solve for e, like this:
\(\begin{gathered} \frac{R_p_{}}{1-e}=\frac{R_a}{1+e} \\ \frac{1.381}{1-e}=\frac{1.666}{1+e} \\ (1.381)\cdot(1+e)=(1.666)\cdot(1-e) \\ 1.381+1.381e=1.666-1.666e \\ 1.666e+1.381e=1.666-1.381 \\ 3.047e=0.285 \\ e=\frac{0.285}{3.047} \\ e=0.09353 \\ \\ \text{now, for a, replacing in (1):} \\ a=\frac{1.381}{1-0.09353} \\ a=1.523 \end{gathered}\)As mass increases, the gravitational force:
stays the same
decreases
changes unpredictably
increases
Answers
Pls help!!
Which situation describes a system with increasing gravitational potential energy?
a boy jumping down from a tree limb
a girl stretching a horizontal spring
a bicyclist riding up a steep hill
a train speeding up on a flat track
Answers
C) a bicyclist riding up a steep hill
The metaphor for a system with rising gravitational potential energy is "a bicyclist riding up a steep hill." Let's get into greater detail:
A cyclist faces resistance from gravity as they ride up a steep slope. The cyclist's elevation, or height above the ground, rises as they cycle and climb uphill. Gravity is pulling the cyclist down the hill by exerting downward force. The cyclist must apply force to the pedals in order to move forward and overcome the pull of gravity. In order to do this, the bicyclist must transform chemical energy from their body into mechanical energy. The distance of the cyclist from the centre of the Earth grows as they ride up the hill. The height and mass of an object affect its gravitational potential energy. In this scenario, as the bicyclist's height rises, their gravitational potential energy also rises.
Due to the higher elevation, the energy input from the biker is stored as increased potential energy. When the bicycle descends the hill or does work, this potential energy can be transformed back into kinetic energy or other types of energy.
A heavy truck on a road outside can cause ripples in a glass of water inside a
house. What is responsible for this phenomenon?
A. Waves travelling through the grounds to the glass
B. Loud noises from the truck engine
C. Radio waves from the truck's on board radio transmitter
D. Wind from the truck passing by the house
Answers
Answer:
A
Because if the window is closed theres no way loud noises or radio waves or the wind cause the ripples the answer its A
Fig above shows a wave traveling through a medium. Use the fig to answer the questions below.
A.)What is the amplitude of the wave ? Include correct units.
B.)Use the graph to determine the time of one wave. Use it to find the frequency.
C.)If the speed of the wave is 25 m/s, what is the wavelength of the wave ? Show data listing, equation , substitution leading to the answer for full credit.
Answers
(a) The amplitude of the wave is 0.2 m.
(b) The period of the wave is 4 s.
(c) The wavelength of the wave is 100 m.
What is the amplitude of the wave?(a) The amplitude of the wave is the maximum displacement of the wave.
amplitude of the wave = 0.2 m
(b) The period of the wave is the time taken for the wave to make one complete cycle.
period of the wave = 5.5 s - 1.5 s = 4 s
(c) The wavelength of the wave is calculated as follows;
λ = v / f
where;
v is the speed of the wavef is the frequency of the wavef = 1/t = 1 / 4s = 0.25 Hz
λ = ( 25 m/s ) / 0.25 Hz
λ = 100 m
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During sexual reproduction, each parent contributes
Answers
Answer:
each parents contributes the dad gives the seed and the mom gives the egg
Explanation:
and then you are born
Earth rotate once every 24 hours. In a reference frame fixed to Earth, how far does
a point on the equator move in 1 hour? RE = 6.34×106 m
Answers
In a reference frame fixed to Earth, a point on the equator moves zero distance in 1 hour.
What is the frame of reference?A frame of reference in physics is made up of an abstract coordinate system and the collection of physical reference points that fix the coordinate system specifically and regulate measurements inside it.
When we take a reference frame fixed to Earth, the displacement due to earth's rotation can not be measured. So, any point on earth remains in rest through out the day with respect to the reference frame fixed to Earth. Hence, a point on the equator moves no distance in 1 hour in a reference frame fixed to Earth.
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Part C Now, grab Tracker’s protractor tool (the green angle in the video frame) and measure the angle of incidence and the angle of refraction for the frame numbers specified in the table below. Hints: To advance the video a frame at a time, use the step buttons on the right. Position the vertex of the protractor exactly at the origin of the coordinate axis. Move the arms of the protractor so that one arm is on the vertical axis (above or below, as appropriate) and the other on the light ray.
Answers
In order to measure the angle of incidence and the angle of refraction using Tracker's protractor tool (the green angle in the video frame), the following steps should be followed:
Step 1: Open the video in Tracker software.
Step 2: Click on the "Measure" button on the toolbar at the top of the software.
Step 3: From the dropdown menu, select "Angle".
Step 4: Click on the "protractor tool" icon (the green angle in the video frame).
Step 5: Position the vertex of the protractor exactly at the origin of the coordinate axis and move the arms of the protractor so that one arm is on the vertical axis (above or below, as appropriate) and the other on the light ray.
Step 6: Measure the angle of incidence and the angle of refraction for the frame numbers specified in the table below by using the step buttons on the right to advance the video a frame at a time.
Step 7: Record the measured angles in the table below. Note that the angle of incidence should be measured on the incident ray (the ray that is coming from the left), and the angle of refraction should be measured on the refracted ray (the ray that is coming from the right).In conclusion, by following these steps, one can measure the angle of incidence and the angle of refraction using Tracker's protractor tool.
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A 2 m long wire carrying 2 A of current pointing to the right is placed in a magnetic field of 4 T directed away from you.
How big is the force acting on the wire?
A. 4 N
B. 8 N
C. 12 N
D. 16 N
Answers
Answer:16
Explanation:
as F=BIL so by placing value's B is magnetic field 4 and i is current 2A and l is length that js 2 m so answer is
Given: i=10A,B=0.15 T,θ=45
∘
and l=2 m
Force on a current carrying wire of finite length =
F
=l(
i
×
B
)
Hence, magnitude of force, F=Bilsinθ
=0.15×10×2×sin45
∘
=
2
3
N
The force of gravity between the Sun and Jupiter is 5
Answers
ANSWER
1.8 x 10²⁷ kg
EXPLANATION
Given:
• The force of gravity between the Sun and Jupiter, F = 5x10²³N
,• The mass of the Sun, m₁ = 2x10³⁰kg
,• The distance between Jupiter and the Sun, r = 7x10¹¹m
Unknown:
• The mass of Jupiter, m₂
By Newton's Law of Universal Gravitation,
\(F=G\cdot\frac{m_1m_2}{r^2}\)Where G is the gravitational constant, which has a value of approximately 6.67x10⁻¹¹m³/kg*s².
Solving this equation for m2,
\(m_2=\frac{r^2\cdot F}{G\cdot m_1}\)Replace with the values and solve,
\(m_2=\frac{(7\times10^{11}m)^2\cdot(5\times10^{23}N)}{(6.67\times10^{-11}\frac{m^3}{\operatorname{kg}\cdot s^2})\cdot(2\times10^{30}\operatorname{kg})}\approx1.8\times10^{27}\operatorname{kg}\)Hence, the mass of Jupiter is 1.8x 10²⁷ kg.
The radius of the earth is 6.4 x 10^6 m . Calculate the angular and linear velocity of a participle at the earth's surface.
Answers
Answer: the angular velocity of a particle at the Earth's surface is approximately 7.27 x 10^-5 rad/s, and the linear velocity of the particle is approximately 464.1 m/s.
Explanation:
PLEASE ANSWER FASG I WILL MARK BRAINELIST PLEASEEEEE
The number of protons in the nucleus of an atom determines the species of the atom, i.e., the element to which the atom belongs. An atom has the same number of protons and neutrons. But the electron number cannot be used instead because (5 points)
a. electrons are not within the nucleus
b. electrons are negatively charged
c. electrons can be removed from or added to an atom
d. electrons are lighter than protons
Answers
The electron number cannot be used instead because electrons can be removed from or added to an atom (option C)
Why the electron number cannot be used instead?The element of an atom is determined by its proton count, while the electron count can exhibit variability. Take, for instance, a sodium atom, which encompasses 11 protons and 11 electrons. However, it has the capacity to relinquish one electron, transforming into a sodium ion housing only 10 electrons.
This occurs due to the relatively loose binding of electrons to the nucleus, enabling their removal through the influence of an electric field or alternative mechanisms.
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URGENT PLS HELP A moon of mass m orbits a planet of mass M in uniform circular motion with a constant tangential velocity. The distance between the center of the moon and the center of the planet is R. The gravitational field strength at the center of the moon is Gmoon. A satellite of mass m/5 is halfway between the center of the moon and the center of the planet. What is the gravitational field strength at the satellite?
Answers
The gravitational field strength at the satellite is 80 % of the gravitational field strength at the center of the moon.
What is the gravitational field of the moon?
The gravitational field strength of the moon is calculated as follows;
G. moon = F/M
where;
F is the gravitational forcem is massF = GMM/R²
G. moon = F/M
G. moon = GM/R²
Where;
G is universal gravitational constantM is the mass of the moonR is the radius of the moonFor a satellite with the following characteristics;
mass of satellite = M/5
distance of the satellite = R/2
G. S = G (M/5) / (¹/₂R)²
G. S = G (M/5) / (¹/₄R²)
G. S = 4GM / 5R²
G. S = 4/5 ( GM/R² )
G. S = 0.8 ( GM/R² )
G. S = 0.8 ( G. moon )
G. S = 80 % of G. moon
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Explain why a ping pong ball and bouncy ball of the same size have different weights
Answers
Answer:
the material
Explanation:
weight is defined as the amount of force on the object because of gravity. ping pong balls and bouncy balls are made out of different materials that are different weights. most bouncy balls are also not hollow, unlike ping pong balls. these factors affect the weight of these objects.
how is potential energy a scalar quantity even though it can be negative?
Answers
Explanation:
Potential energy is a scalar quantity because it has only magnitude and no direction. Its ability to be negative does not affect its scalar nature.
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What would be the reaction force for the following action force: Hand hits a table.
Hand feels pain.
Hand stops moving.
Table hits hand.
Table makes a noise.
Answers
Answer:
hand feels pain
Explanation:
I think the right answer is hand feels pain.
According to Newton's third law of motion, for every action, there is an equal and opposite reaction. In the scenario you described, the action force is the hand hitting the table.
Hand feels pain: When the hand hits the table, the hand exerts a force on the table. Simultaneously, the table exerts an equal and opposite reaction force on the hand. This reaction force is responsible for the sensation of pain that the hand feels upon impact. It is essentially the force transmitted back from the table to the hand.
Hand stops moving: The reaction force from the table, acting in the opposite direction to the action force, causes the hand to stop moving. As the hand applies a force to the table, the table applies an equal and opposite force to the hand, resulting in a deceleration of the hand's motion until it comes to a stop.
Table hits hand: As mentioned earlier, the table exerts a reaction force on the hand. This reaction force acts in the opposite direction to the action force, causing the table to exert a force on the hand. Therefore, the table hitting the hand is a consequence of the reaction force resulting from the hand hitting the table.
Table makes a noise: The noise produced when the hand hits the table is not directly related to the reaction force itself. The noise is typically the result of the vibrations and movements caused by the impact between the hand and the table. These vibrations propagate through the table, air, and other surrounding objects, creating sound waves that we perceive as noise.
It's important to note that while Newton's third law states that the magnitudes of the action and reaction forces are equal, the effects they produce can be different due to variations in mass, acceleration, and other factors involved.
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3. A car with a mass of 1600 kg has a kinetic energy of 125 000 J. How fast is it moving?
Answers
The car is moving at approximately 12.5 meters per second.
The kinetic energy (KE) of an object can be calculated using the formula:
KE = 1/2 * m * \(v^2\)
where
KE = kinetic energy,
m =Mass of the object, and
v = velocity.
In this case, we are given the mass (m) of the car as 1600 kg and the kinetic energy (KE) as 125,000 J. To find the velocity .
Substituting the values , we have:
125,000 J = 1/2 * 1600 kg *\(v^2\)
Now, we can solve for v by rearranging the equation:
\(v^2\) = (2 * 125,000 J) / 1600 kg
\(v^2\) = 156.25 \(m^2/s^2\)
Taking the square root, we find:
v = √156.25\(m^2/s^2\)
v ≈ 12.5 m/s
Therefore, the car is moving at approximately 12.5 meters per second.
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Samir is waiting for a slow reaction to finish. What is the best way to make the reaction go faster?
Question 12 options:
Put it in the fridge where it is cold
Cover it with a blanket so it's dark
Warm it up on the stove
There is nothing you can do to change the speed of the reaction
Answers
In general, option c - warming it up on the stove - is often an effective method to increase the reaction rate.
Increasing the temperature of a reaction generally leads to faster reaction rates. This is because higher temperatures provide more thermal energy to the reactant particles, causing them to move faster and collide more frequently. The increased collision frequency and energy lead to more successful collisions and a higher likelihood of effective molecular interactions, which speeds up the reaction. On the other hand, options a and b - putting it in the fridge where it is cold or covering it with a blanket to make it dark - are unlikely to have a significant effect on the reaction rate. While temperature can influence reaction rates, cooling the reaction or making it dark typically reduces the kinetic energy of the particles, resulting in slower reaction rates. Option d - there is nothing you can do to change the speed of the reaction - is not accurate. The reaction rate can be influenced by various factors such as temperature, concentration, catalysts, and surface area, among others. By manipulating these factors, it is often possible to control and change the speed of a reaction. Hence option c, is correct
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Given that the luminosity of a star is given as a function of its radius and temperature by the equation. I do not understand this last question in terms of what to put into the given equation.
Answers
The luminosity of this star in units of the solar luminosity would be: 483.7L.
How to calculate the luminosityTo calculate the luminosity, we would use the different values given and the formula for luminosity.
Temperature = 9305K
Star's radius = \(5.90 * 10^{9} m\\\)
Luminoisty of the star
Luminosity of the sun
= \(\frac{4π * (5.90 * 10^9)^2 * 5.67 * 10^-8 * 9305^4 W}{3.846 * 10^26 W}\)
= 483.7L
This is the unit for luminosity.
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2. Turn on Show current and select Electron flow. The moving dots represent a current of electrons—tiny, negatively charged particles—moving through the wire. Voltage is a measure of how much more potential energy an electron at one end of a battery has than an electron at the other end of the battery. A. How does changing the battery’s voltage affect the current? It makes the current get more electrons which causes more movement
Answers
Answer:
Changing the battery's voltage will also change the flow of electrons through the circuit. An increase in the voltage will produce more electron movement, and a reduction in the voltage will produce less electron movement.
Explanation:
The voltage is the potential energy between two points in an electric circuit. It is also the work done per unit charge to move a charge between these two points, this work is done against the resistance (analogous to frictional forces in the wire) of the wire. The potential energy is like the push required to move an electron through an electric circuit, and negatively charged particle (electron in the case of the wire) are pulled towards the higher potential, which is conventionally at the positive terminal. Current (flow of electrons) will not occur without any potential between two points.
Changing the battery's voltage will change the push that is experienced by the electrons. If the potential is increased, the electrons will experience more push, which means there will be more movement or flow of electrons through the circuit. Reducing the battery's voltage reduces the push experienced by the electrons; meaning a reduced flow or movement of these electrons through the circuit.
The way in which one atom interacts with another atom is mostly influenced by the configuration of the
A. electrons farthest from the nucleus.
B. protons in the center of the nucleus.
C. electrons closest to the nucleus.
D. protons on the outer edge of the nucleus.
Answers
The way in which one atom interacts with another atom is mostly influenced by the configuration of the electrons farthest from the nucleus.
Option A.
What is atom?An atom can be defined as the smallest part of a substance that cannot be broken down chemically. Each atom has a nucleus (center) made up of protons (positive particles) and neutrons (particles with no charge).
The arrangement of electrons in orbitals and shells around the nucleus is referred to as the electronic configuration of the atom.
Thus, we can conclude that the way in which one atom interacts with another atom is mostly influenced by the configuration of the electrons farthest from the nucleus.
The remaining options do not fit the empty space properly, and they include;
protons in the center of the nucleus.electrons closest to the nucleus.protons on the outer edge of the nucleus.Learn more about electron configuration here: https://brainly.com/question/26084288
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Which is the correct representation of the right-hand rule for a current flowing to the right?
Answers
Answer:
The third image
Explanation:
The one with the thumb pointing to the right
Answer:
3, correct on Edge 2020
Which person will most likely hear the loudest sound?
A
B
C
D
Answers
Answer:
The youngest person
Explanation:
Hearing worsens with age
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Answer:
A
Explanation:
The person closest to the origin of the sound will most likely hear the loudest sound. ^^
A student has to work the following problem: A block is being pulled along at constant speed on a horizontal surface a distance d by a rope supplying a force F at an angle of elevation q. The surface has a frictional force acting during this motion. How much work was done by friction during this motion? The student calculates the value to be –Fd sinq. How does this value compare to the correct value?
a. It is the correct value.
b. It is too high.
c. It is too low.
d. The answer cannot be found until it is known whether q is greater than, less than, or equal to 45°.
Answers
Answer:
D
The answer cannot be found until it is known whether q is greater than, less than, or equal to 45°.
Explanation:
Since block moves with constant speed
So, frictional force
f = FCosq
Work done by friction
W = - fd
W = - fd Cos q
The answer may be greater or less than - fdSinq. It depends on the value of q which is less than, or equal to 45°.
WILL DO BRAINLIEST A jar contains seven pink, 6 orange, and four blue marbles. If you pick one without looking, what is the probability that the marble you pick will be orange?
6/10
6/17
11/17
7/11
Answers
Answer:
Choice 2: 6/17
Explanation:
4+7=11. 6+11= 17. so it's 6/17
How mechanical energy can be transformed into wind energy and how
Answers
Explanation:
As wind moves past the blades of a wind turbine, it moves or rotates the blades. These blades turn a generator. A generator works as an inverse of an electric motor; instead of applying electrical energy to turn it and create mechanical energy, it uses mechanical energy to turn and create electrical energy. SIMPLE WORDS: a wind turbine moves which is mechanical energy and the way it moves is by the wind blowing and it goes both ways mechanical energy into wind energy wind energy into mechanical and when turbines move it creates wind also
WHOEVER ANSWERS IS THE BRAINLIEST!!! PLS HELP!!
Answers
Based on the information, we can infer that the temperature on the west and east coasts of the United States is higher than in the central part at latitude 35° North.
What do we see in the image?In the image you can see the map of the United States and two latitudinal lines of 35° and 45° North. Additionally we see the different temperatures that exist in various cities or locations in the United States.
Based on this information, we can infer that the temperatures on the east and west coasts are higher than the temperatures recorded in the central part. For example, at 35° latitude, the coasts register temperatures of more than 60°F while the central zone registers lower temperatures between 36 and 59°F.
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Is the answer clockwise (CW) or counter clockwise (CCW) ?
Answers
Compared with those who live in the lowlands, people who live in the Southeast highlands experience
Answers
Answer:
The territory of Scotland was divided into two parts -- the highlands and the lowlands.
Explanation:
The people living in places of high altitudes are called highlanders. These high altitude places are called high lands and places with low elevations or altitudes are called the low lands. There are many differences between the two places and people experiences different difficulties in these places.
Some of the differences are :
The life of the people living in high lands are much more tougher than those living in the low lands. The highlanders have to work more hard than lowlanders.
The agricultural activities are more flourished in the low lands than in the high lands.
The low lands are more populated and highly industrialized than the high lands. Iron and steel industry, metal working industry and agriculture are some of the main industries of lowlands. They are the land of the Scottish nation.