The object move before it stops momentarily and other starts to move back to the left is 1.42m to the right and an acceleration of 8.40m/s2.
using law of conservation of energy
Total energy at the 0.6 m = total energy at the right extreme position
(0.5*k*x^2) + (0.5*m*v^2) = (0.5*k*A^2)
F = -k*x
m*a = -k*x
force constant k = -m*a/x
then
(-0.5*m*a/x)*x^2 + (0.5*m*v^2) = -(0.5*m*a/x)*A^2
m cancels
(-0.5*8.4*0.6)+(0.5*2.2*2.2) = (-0.5*8.4/0.6)*A^2
-0.1 = -7*A^2
A = \(sqrt(10/7)\) = 1.42 m is the required distance
The rate at which an object's velocity changes in relation to time is known as acceleration. The direction of the net force imposed on an item determines its acceleration in relation to that force. According to Newton's Second Law, the magnitude of an object's acceleration is the result of two factors working together: The magnitude of the net balance of all external forces acting on the item is directly proportional to this net resultant force, whereas the mass of the object, depending on the materials used to make it, is inversely related to the magnitude.
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A supersaturated solution is one which A. has less solute dissolved than the solution should hold at that temperature. B. has more solvent dissolved than the solution should hold at that temperature. C. has more solute dissolved than the solution should hold at that temperature. D. has less solvent dissolved than the solution should hold at that temperature.
Answer:
Option C is correct
Explanation:
A supersaturated solution is one that has more solute dissolved than the solution should hold at that temperature.
Examples include carbonated water, sugar syrup, honey.
A solution of a chemical compound can be dissolved in heated water to prepare a supersaturated solution. A solution becomes supersaturated as its temperature is changed.
Answer:
Its A
Explanation:
What is the momentum of a 2kg mass moving at 25 m/s
The momentum of a 2kg mass moving at 25 m/s is 50kgm/s.
How to calculate momentum?Momentum in physics refers to the tendency of a body to maintain its inertial motion.
It is the product of its mass and velocity, or the vector sum of the products of its masses and velocities i.e.
p = mass × velocity
According to this question, a 2kg mass is moving at 25 m/s. The momentum of the body can be calculated as follows:
Momentum = 2kg × 25m/s
Momentum = 50kgm/s
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an object experiences a constant acceleration of along the axis for , attaining a velocity of in a direction from the axis. calculate the initial velocity vector of the object.
final velocity, v = 16.0 m/s in a direction 45° from the +x axis.
x component of v = , v(x) = 16 cos(45°) = 11.314 m/s
y component of v = , v(y) = 16 sin (45°) = 11.314 m/s
What is acceleration?The speed where the speed increases is known as acceleration. Acceleration typically, but not always, indicates a change in speed. Because of the shifting direction of its velocity, an item moving on a circular route at a constant speed is still accelerating.
The rotation of an object's acceleration is determined by the orientation of the net force exerted on that object.
now as acceleration is along x axis only x component is affected by this acceleration.
let, u(x) be the initial x component of velocity. then
v(x) = u(x) +a*t
11.314 = u(x) + (-2) × 2.7
u(x) = 16.714 m/s
hence initial velocity magnitude = [(u(x))² + (u(y))²]⁰·⁵ = 20.18 m/s
angle of initial vector (θ) = arctan (11.314/ 16.714) = 34.09
hence , initial velocity vector of the object = 20.18 m/s in a direction 34.09 degrees from +x axis
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An electron moves in an electric field. Does it move toward regions of higher potential or lower potential? explain.
The electric fields is always directed from higher potential to the lower potential.
An electron moves in an electric field. Does it move toward regions of higher potential or lower potential?
The electric fields always aiming from the region of higher potential to the region of lower potential. So the force of electrostatic and the direction of the travel of electrons will be always from lower potential to the region of higher potential.
An electric field is defined as the physical field which covers the electrically charged particles and also they can apply force on all other charged particles.
So we can conclude that the electric fields is always directed from higher potential to the lower potential.
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On a five question multiple choice test there are five possible answers of which one is correct. If a student guesses randomly and independently what is the probability that she is correct only on two questions?
Answer:
The probability that she is correct on only two questions is 0.246
Explanation:
The probability of getting an answer correct = 1/5
The probability of getting only two questions correctly
By binomial trials, we have;
P(X = K) = \(\dbinom{n}{k}\times p^{k}\times \left (1 - p \right )^{n - k}\)
P(X = 2) = \(\dbinom{6}{2}\times \left (\dfrac{1}{5} \right )^{2}\times \left (1 - \dfrac{1}{5} \right )^{6 - 2}\)
= 15×256/15625 = 768/3125 = 0.246
Therefore, the probability that she is correct on only two questions = 0.246.
How do you solve this ?
Select the correct answer from each drop-down menu.
What types of energy are involved in a chemical reaction?
()is the energy required for a chemical reaction to take place, and()
is the energy associated with every substance.
"Activation energy" and "Chemical potential energy" are the types of energy are involved in a chemical reaction.
In a chemical reaction, various forms of energy are involved. The two types of energy mentioned in the question are:
Activation energy: This is the energy required for a chemical reaction to occur. It is the minimum amount of energy that reactant molecules must possess in order to undergo a reaction and form products. The activation energy is necessary to break the existing chemical bonds in the reactants, allowing new bonds to form and resulting in the formation of products.Chemical potential energy: This is the energy associated with the chemical substances themselves. Chemical potential energy is stored within the chemical bonds of molecules and compounds. During a chemical reaction, this energy can be released or absorbed as bonds are broken and formed.These two types of energy, activation energy and chemical potential energy, play essential roles in chemical reactions. The activation energy determines the feasibility of a reaction, while the chemical potential energy is related to the energy stored within the reactants and products.
In summary, the correct answers are:
Activation energy is the energy required for a chemical reaction to take place.Chemical potential energy is the energy associated with every substance.For more such questions on chemical reaction, click on:
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4. If a player has more mass they will also have more ____
Answer:
momentum.
Explanation:
This is because mass is directly proportional to momentum.
I am Pushing down at a 20. degree angle on a 75kg table with a force of 200.N. How far away is the table in 30. seconds.
The distance travelled by the table of mass 75 kg pushed with a force of 200 N at 20° is 5400 m
W = m g
m = 75 kg
g = 9.8 m / s²
W = 75 * 9.8
W = 735 N
θ = 20°
F = 200 N
Resolving W into its horizontal component,
\(W_{x}\) = W sin θ
\(W_{x}\) = 735 * sin 20°
\(W_{x}\) = 250 N
∑ \(F_{x}\) = m a
F + \(W_{x}\) = m a
200 + 250 = 75 a
a = 450 / 75
a = 6 m / s²
a = v / t
t = 30 s
v = 6 * 30
v = 180 m / s
v = d / t
d = 180 * 30
d = 5400 m
Therefore, the table is 5400 m far away.
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The diagram below shows a 5.0-kilogram mass sliding 9.0 meters down an incline from a height of
2.0 meters in 3.0 seconds. The object gains 90. joules of kinetic energy while sliding.
How much work is done against friction as the mass slides the 9.0 meters?
The work done against friction as the mass slides is 8 J.
The given parameters:
sliding mass, m = 5.0 kgdistance traveled by the mass, s = 9.0 mheight of incline, h = 2.0 mtime of motion, t = 3.0 skinetic energy of the object, K.E = 90 JThe work done against friction as the mass slides can be determined by applying work-energy theorem.
\(\Delta E= W\\\\P.E - K.E = W\)
the change in mechanical energy of the sliding mass, is equal to energy lost to friction.
\(W = P.E - K.E\\\\W = mgh - K.E\\\\W = (5 \times 9.8 \times 2) - 90\\\\W = 98 - 90\\\\W = 8 \ J\)
Thus, the work done against friction as the mass slides is 8 J.
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A car travels 258 miles in 312 minutes at a constant speed. How far did the car travel in 5 minutes?.
The car will travel around 4.13 miles in 5 minutes
Explain distance.
The term "distance" refers to the size or magnitude of the difference between two positions. The distance between two positions and the distance traveled between them are not the same thing, it should be noted. The distance traveled is the total length of a path that connects two points.
The speed will be: Given that the car travels at a constant speed, 258 miles are covered in 312 minutes,
Distance/Time x Speed
Speed = 258/312
Speed = 0.827
The distance, d, that the car travels in m minutes will therefore be represented by the following equation:
Distance equals 0.827 x 5.
= 4.135 miles away
= about 4.13 miles in 5 minutes
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What is the height at the peak of the projectiles trajectory if the magnitude vo equals 42.2 meters per second, and the angle ofΘis 41.8 degrees?
Take into account that the vertical final velocity of the projectile is given by:
\(v^2_y=v^2_{oy}-2gy\)Now, consider that at the peak of the trajectory, the vertical final velocity is zero. Moreover:
\(v^2_{oy}=v^2_o\sin ^2\theta\)Then, by solving for y into the equation for vy^2, you obtain:
\(\begin{gathered} o=v^2_o\sin ^2\theta-2gy \\ y=\frac{v^2_o\sin \theta}{2g} \end{gathered}\)where g = 9.8m/s^2 is the gravitational acceleration constant.
By using the given values for the angle and vo you obtain for the height of the peak y:
\(y=\frac{(42.2\frac{m}{s})(\sin 41.8)^2}{2(9.8\frac{m}{s^2})}\approx40.36m\)Hence, the height of the peak of the projectil trajectory is approximately 40.36 m
Suppose a drop of red food coloring is added to a glass of water. at first the drop is separate from the water, but very quickly it begins to expand outward until the entire glass of water is red. this is an example of
When a small amount of red food dye is poured into a glass of water. The drop initially appears to be distinct from the water, but very rapidly it starts to spread out until, as a result of simple diffusion.
The dispersion of food coloring in water is an illustration of diffusion. Whether in a liquid or a gas, diffusion is the mixing of molecules as a result of their haphazard motion. Diffusion occurs significantly more slowly in cold water than in warm water because cold water molecules have less kinetic energy. However, food coloring can also demonstrate non-random movement, such as convectional agitation of water. when a small amount of red food dye is poured into a glass of water.
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three people are standing on a horizontally rotating platform in an amusement park. one person is at radius r, the second person is 3/5r away from the center, and the third person is 1/2r away from the center. let's say they are all able to not slide, compare their periods, their speeds, and their radial accelerations. for each quantity, rank each quantity from smallest to largest. explain your reasoning for each ranking. what force is keeping them on the rotating platform? the person with mass, m, at 1/2 r begins to walk towards the outside of the circle and begins to slip when they reach 1.5r. if r is 5m and the period is 9s. what is the coefficient of static friction?
All periods between 1 and 2 are equal, hence T2 = T, T3, and so forth, the third individual has a linear velocity of 1/2v whereas the second person has a linear velocity of 3/5v and a linear acceleration of 3/5a.
Everyone has the same period since everyone has the same rotational velocity, which is constant and independent of the park equipment's radius. T = T1= T2, Pseudovectors in physics such as rotational velocity, angular frequency vector, and angular velocity are used to describe how quickly an object's angular position or orientation changes.
V = wR V2 = W(3/5) RsV2 = v
V3 = W(1/2R)
Similar to how a2 equals 3/5a, V3 equals 1/2v.
V = wR
V2 = W(3/5)R
V2 = 3/5v
V3 = W(1/2R)
V3 = 1/2 v
similarly
a2 = 3/5a
and a3 = 1/2a
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Honey bees beat their wings, making a buzzing sound at a frequency of 2.3 × 102 hertz. What is the period of a bee's wing beat?
A.
4.3 × 10-3 seconds
B.
2.6 × 10-3 seconds
C.
4.0 × 103 seconds
D.
2.6 × 103 seconds
Answer:
f=2.3x10^2 Hz
T=??
T=1/f=1/2.3x10^2=4.3x10^-3
Explanation:
Correct Answer:
A. 4.3 x 10-3 seconds
A person strikes a ball with a bat. The temperature of the ball increases by 0.06ᵒC. What accounts for the increase?
The increase in the average kinetic energy of the ball causes the increase in the temperature of the ball.
Kinetic energy of a particle is directly proportional to its temperature.
A ball initially at rest acquires kinetic energy when an external force is applied to it. As the person strikes the ball with a bat, the ball gains momentum which increases its kinetic energy of the ball.
Temperature on the other hand, is the measure of the average kinetic energy of a particle. Consequently, as the kinetic energy of the ball increases, the temperature of the ball increases as well.
Thus, we can conclude that the increase in the average kinetic energy of the ball causes the increase in the temperature of the ball.
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How is energy transferred during the water cycle? Question 1 options: Water gains energy during evaporation and releases it during condensation in the atmosphere Water gains energy during evaporation and condensation in the lithosphere. Water gains energy in condensation and releases it in evaporation. Water releases energy during evaporation and condensation.
Answer:
Water gains energy during evaporation and releases it during condensation in the atmosphere
Explanation:
In the water cycle, heat energy is gained or lost by water as it undergoes various processes in the cycle.
In evaporation, water molecules gains energy because the molecules of water vibrate faster and become more energetic. Hence they are able to escape into the atmosphere from the surface of the liquid.
In condensation, the molecules of gaseous water looses energy and becomes liquid.
Hence, water gains energy during evaporation and releases it during condensation in the atmosphere.
Answer:
K12 HE HE
Explanation:
Carbon dioxide undergoes a phase change called sublimation, how does a single molecule of carbon dioxide change as a result of this process in terms of its energy and physical characteristics? a. There is a physical change from a gas to a liquid; energy is released into the environment reducing the molecular movement. b. There is a physical change from the solid state to a gas state where energy between the molecules increases. c. There is a chemical change between the carbona nd oxygen resulting int he formation of oxygen gas which has more energy d. There is a chemical change as the carbon dioxide is transferred from a liquid to a solid reducing the amount of energy
The correct answer is(b). There is a physical change from the solid state to a gas state where energy between the molecules increases.
What is the process of sublimation in carbon dioxide?During sublimation, carbon dioxide transitions directly from the solid state (dry ice) to the gas state without passing through the liquid phase. In this process, individual molecules of carbon dioxide gain energy from the surroundings, leading to an increase in their kinetic energy and molecular movement.
As a result, the carbon dioxide molecules separate from each other and form a gas. This phase change is considered a physical change rather than a chemical change since the chemical composition of carbon dioxide remains the same throughout the process.
Therefore, the sublimation of carbon dioxide results in a physical change where the molecules transition from the solid state to the gas state, gaining energy and increasing their molecular movement.
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No matter how well we get along with our parents as adolescents, there comes a time when we need to break away and assert our own independence. There are several ways in which we do this, some of them deliberate and intentional and some of them not so intentional. Describe several ways you use or have used to break away from your parents. Briefly describe your parents' reactions.
Answer: I never said anything to them but if i did it would be "I need a break from you, i love you but sometimes I have to find the path on my own." i would say this if i wasn't scared to hurt them.
Explanation:
The weight of a boy having a mass of 50kg is blank N. (Estimate 10 m/s^2 for g)
weight will be 500 N
Weight is the force with which the Earth attracts all bodies towards its centre. Weight of an object is expressed as, w = mg, where 'm' is the mass of the object and 'g' is the acceleration due to gravity .
Therefore
w = 50 × 10 = 500 N.
acceleration due to gravity
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A 2 kg object has a specific heat capacity of 1,700 J/(kg \cdot⋅oC)
To raise this object's temperature from 15 Celsius to 25 Celsius, the object must absorb _______ Joules of heat.
The amount of heat needed to raise the temperature of a 2kg object from 15°C to 25°C is 34000J.
HOW TO CALCULATE SPECIFIC HEAT CAPACITY:
The amount of heat absorbed by an object can be calculated by using the following expression:Q = m.c.∆TWhere;
Q = amount of heat absorbed or released (J)m = mass of objectc = specific heat capacity (J/g°C)∆T = change in temperature (°C)According to this question, 2 kg object has a specific heat capacity of 1,700J/kg°C and was raised from a temperature of 15 Celsius to 25 Celsius. The heat absorbed is calculated as follows:Q = 2 × 1700 × {25 - 15}Q = 3400 × 10Q = 34000JTherefore, the amount of heat needed to raise the temperature of a 2kg object from 15°C to 25°C is 34000J.Learn more about how to calculate heat absorbed at: https://brainly.com/question/11194034?referrer=searchResults
How much power is generated by a machine that lifts a 50 kg box a
distance of 15m in 8sec?
O 344.25W
O918.75W
O 1245.55W
6000W
The power is generated by the machine that lifts the 50 kg box a
distance of 15 m in 8 seconds is 918.75 W (2nd option)
How do i determine the power generated?We'll begin by obtaining the work done by the machine in lifting the box. Details below:
Mass of box (m) = 50 KgHeight (h) = 15 mAcceleration due to gravity (g) = 9.8 m/s² Work done (Wd) = ?Wd = mgh
Wd = 50 × 9.8 × 15
Wd = 7350 J
Finally, we shall determine the power generated. Details below:
Work done (Wd) = 7350 JTime (t) = 8 secondsPower generated (P) = ?P = Wd / t
P = 7350 / 8
P = 918.75 W
Thus, the power generated is 918.75 W (2nd option)
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What is the mass of a 50kg object in space with no gravity?
Answer:
The answer would be 0kg.
Your welcome.
A 3. 5-a current is maintained in a simple circuit with a total resistance of 1500 ω. What net charge passes through any point in the circuit during a thirty second interval?.
Electric Current:
Electric current is the flow of charge through a given circuit per unit time. Electric current is one of the components needed to calculate the electric power that a device needs to operate and do work. Electric current is measured in amperes (A), which is equal to:
1A = 1 C/ s
Recall that the coulomb (C) is the unit for charge while the second (s) is the unit for time
Given: I = 3.5
A is the current
Δt =30 s is the time interval
A =ΔQ/ΔT
Net charge = 100C
Electricity is produced when an electric current runs through a circuit.
How does electric current work?
A current of electricity is a steady flow of electrons. When electrons move from one place to another, round a circuit, they carry electrical energy from place to place like marching ants carrying leaves. Instead of carrying leaves, electrons carry a tiny amount of electric charge.
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A square object of mass {m} is constructed of four identical uniform thin sticks, each of length {L}, attached together. This object is hung on a hook at its upper corner.
If it is rotated slightly to the left and then released, at what frequency will it swing back and forth?
Express your answer in terms of the variables m, L, and appropriate constants.
The frequency at which the square object will swing back and forth is given by √(g / (4\(\pi ^{2}\) * L)), where g is the acceleration due to gravity.
To determine the frequency at which the square object will swing back and forth, we can use the formula for the period of a simple pendulum. The period (T) is the time taken for one complete oscillation.
For a simple pendulum, the period can be given by the formula:
T = 2π * √(L/g)
Where:
T = period
L = length of the pendulum (distance from the pivot to the center of mass)
g = acceleration due to gravity
In this case, the length of the pendulum is the distance from the pivot to the center of mass of the square object. Since the object is hung at its upper corner, the distance from the pivot to the center of mass is (L/2).
Therefore, the period of the square object can be expressed as:
T = 2π * √((L/2)/g)
T = 2π * √(L/2g)
To find the frequency (f), we can take the reciprocal of the period:
f = 1/T
f = 1 / (2π * √(L/2g))
f = √(g / (4\(\pi ^{2}\) * L))
So, the frequency at which the square object will swing back and forth is given by √(g / (4\(\pi ^{2}\) * L)), where g is the acceleration due to gravity.
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Uma bola é lançada para cima com a velocidade inicial de 20m/s. A sua aceleração é constante e igual a 10m/s² para baixo. Quanto tempo permanece a bola no ar? Qual é a maior altura atingida pela bola? Quando a bola está a 15 m de altura em relação ao solo?
Answer:
sorry but i cannot understand your language, can you speak in english
Which nucleus completes the following equation?
Answer:
I think B but I could be wrong
Explanation:
What are the three forms of water discussed in the passage?
Answer:
The three forms of water are gas, liquid, and ice, I'm not sure if these were mentioned in the passage since you did not attach a picture.
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A force that resists two objects rubbing together is called _____.
OA) heat
OB) friction
OC) kinetic energy
OD) potential energy
Answer:
B
Explanation:
Friction is the force used to prevent 2 objects from rubbing against each other. This would mean if you rubbed your hands together you would feel the heat from the force of friction against the 2 objects namely your hands. Some things mitigate friction like water and soap. Water commonly used in waterslides reduces friction since the properties of water reduces the friction so much that you would be able to slide smoothly. This happens since wet object don't makes hard surfaces smooth. Soap does the same thing since the two objects are more slippery and can seem to get a grip on each other for friction. I hope this helps with your question thanks you and cya!
Which test should the golf pro use to determine if titleist pro v1 golf balls travel a longer average distance than callaway chrome soft golf balls?.
Test which should the golf pro use is a)paired t-test for means. So, correct option is a.
A paired t-test is the test performed to check whether the mean of two unique arrangements of perceptions is equivalent or the distinction between them is zero. It is otherwise called a reliant or related t-test. A matched t-test is one of the two sorts of test t-tests which are utilized to look at the normal or mean of two populaces.
The distinction in two examples that might happen while ascertaining the mean is a direct result of the irregular opportunity or testing blunder. The two examples on which the matched t-test is tried is connected by some quality like similar number of individuals or things or conditions. The utilizations of this test are in the exploration areas of science, business and brain research.
Hence, correct option is a.
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(Complete question) is:
A golf pro wants to determine if Titleist Pro V1 golf balls travel farther, on average, than Callaway Chrome Soft golf balls . A robot hits 9 of each ball, selected at random, and the distance traveled is measured. Assume the distances traveled are normally distributed. The average distance traveled by the 9 Titleist Pro V1 golf balls is 261.1 yards with standard deviation 10 yards, and the average distance traveled by the 9 Callaway Chrome Soft golf balls is 249.3 yards with standard deviation 12 yards.
Which test should the golf pro use to determine if Titleist Pro V1 golf balls travel a longer average distance than Callaway Chrome Soft golf balls?
a. paired-t test for means
b. paired-z test for means
c. Ottest for proportions
d. test for means