The ratio of kinetic energy of colliding bodies before and after collision is 9:1
What is kinetic energy?Kinetic energy refers to be the energy that an object possesses due to its motion. It is defined as the work required to accelerate a body of specified mass from rest to a specified velocity. After the body acquires this energy during acceleration, it retains this kinetic energy as long as the velocity does not change.
Kinetic energy of the body before collision (KE₁): ¹/₂ mv²
Velocity (v') after collision:
v' = [(m₁ - m₂)/(m₁ + m₂)] v
Since, m₁ = 2m
m₂ = m
Substitute the values in the formula:
v' = [m/3m]v
v' = v/3
Now, kinetic energy after collision (KE₂): ¹/₂ mv'²
= ¹/₂ m(v/3)²
= ¹/₂ m(v²/9)
Now the ratio of kinetic energies:
KE₁ / KE₂ = (¹/₂ mv²) / (¹/₂ m(v²/9))
KE₁ / KE₂ = 9/1
Or 9:1
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the am radio band in a particular area has a frequency range of 517 khz to 1612 khz. how long is the wavelength of the radiation at the beginning of the range? answer in units of m.
The wavelength of the radiation at the beginning of the range is 5.8 × 10² - 1.86 × 10² meter.
A wave is a non-stop and repeating disturbance of a medium and a pulse is an unmarried disturbance.
Calculation:-
c=λ⋅f
λ= c/f
= 3 × 10⁸ / 517 × 1000
= 5.8 × 10²
λ= c/f
= 3 × 10⁸ / 1612 × 1000
= 1.86 × 10²
Therefore, wavelength range = 5.8 × 10² - 1.86 × 10² meter.
A wave is a propagating dynamic disturbance of one or greater portions. Waves can be periodic, in which case those quantities oscillate repeatedly about an equilibrium cost at some frequency. wave, propagation of disturbances from place to vicinity in a regular and prepared way. maximum familiar are floor waves that journey on water, but sound, light, and the motion of subatomic particles all showcase wavelike houses.
A wave is a disturbance in a medium that contains strength without an internet motion of particles. it is able to take the form of elastic deformation, a variation of stress, electric or magnetic intensity, electric-powered potential, or temperature.
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A runner exerting a running force of 325 n to the right is met with an air resistance force of 45 n to the left. What is the net force of the runner?(1 point).
The correct answer of net force of the runner is 280 N.
What is resultant force?
A resultant force is the single force and corresponding torque that are produced when adding vectors to a system of forces and torques acting on a rigid body.
Therefore given,
Runner force = F1 = 325 N
Resistance force in opposite direction of runner = F2 = 45 N
Resultant Force, F(Net) = 325 – 45 = 280 N
The net force of the runner would be 280 N
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A baseball with a mass of 0. 145 kilograms collides with a bat at a velocity of 44 meters/second. The ball bounces off the bat with a speed of 49 meters/second in the opposite direction. What is the impulse?.
The impulse is 13.5 newton∙seconds.
Calcultaion:-
for the reason that ball bounced off opposite to its unique path preliminary velocity and final velocity can have opposite signs and symptoms. And as a result we've the:
Δp = zero.145(forty nine -- forty four) = zero.145(93) = 13.485
Rounding the values off to a few massive figures, we have Δp = 13.5N·s.
Forces are weight drag and raise. elevate and drag are truly additives of a single aerodynamic force performing at the ball. in some unspecified time in the future of the 0.7 millisecond touch time amongst bat and ball collision, a median stress of about 2 heaps is applied, with a maximum force of about four masses. it is a selection of electricity.
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an ice dancer with her arms stretched out starts into a spin with an angular velocity of 1.00 rad/s. her moment of inertia with her arms stretched out is 2.48 kg m2. what is the increase in her rotational kinetic energy when she pulls in her arms to make her moment of inertia 1.40 kg m2?
The rotational kinetic energy when she pulls in her arms is 0.7 joule.
We need to know about kinetic energy to solve this problem. Kinetic energy is the energy from a moving object. It can be determined as
KE = 1/2 . I . ώ²
where KE is kinetic energy, I is the moment of inertia and ώ is the angular speed.
From the question above, we know that
ώ = 1 rad/s
I = 1.4 kgm²
Let's assume that the angular velocity does not change. The kinetic energy should be
KE = 1/2 . I . ώ²
KE = 1/2 . 1.4 . 1²
KE = 0.7 joule
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a mass oscillates on a spring on a frictionless, horizontal surface. at the time indicated by the arrow, what is the phase of the oscillation?
If a mass oscillates on a spring on a horizontal, non-stick surface, vx is equal to zero and Fx is the phase of the oscillation. During the Arrow's Predicted Time,
What does the term oscillation mean?Oscillation is the process of any quantity or measure repeatedly varying about its equilibrium value throughout time. Another definition of oscillation is the repeated variation of a substance between two values or around its core value.
Are periodic motion and oscillation the same thing?When an object goes back and forth frequently, it is said to be oscillating. In contrast, periodic motion is the movement of an item that repeats a course after a regular time period. Every oscillatory motion is periodic, but not every periodic motion is an oscillatory motion.
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A 1. 2-m3 rigid tank contains nitrogen gas at 200 kpa and 350 k. Heat is transferred to the nitrogen in the tank and the pressure of nitrogen rises to 900 kpa. Determine the work done during this process.
Using the concepts of work, we got that 0 joule is the amount of the work done during the process in which 1.2-m3 rigid tank contains nitrogen gas at 200 kpa and 350 k and heat is transferred to the nitrogen in the tank and the pressure of nitrogen rises to 900 kpa.
We are given some values of the rigid tank which are
Volume of the tank (V) = 1.2 m³
Initial pressure of the nitrogen (P₁) = 200 kPa
Initial temperature of the nitrogen (T₁) = 350 K
Final pressure of the nitrogen (P₂) = 900 kPa
The volume of nitrogen gas is same as volume of tank. Now, as the tank is rigid so, the volume of nitrogen gas remains the same.
We know that,
Work done on a gas is given as: PΔV
Where, ΔV is the change in volume.
But, the volume here is constant. So, ΔV = 0.
Therefore, work done=P×0=0Joules.
Hence, if 1. 2-m3 rigid tank contains nitrogen gas at 200 kpa and 350 k and Heat is transferred to the nitrogen in the tank and the pressure of nitrogen rises to 900 kpa, then the work done during this process is 0 joules.
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when a solid object is completely submerged in ethyl alcohol, its apparent weight is 18.2 n and when completely submerged in water, its apparent weight is 14.8 n. determine the volume of the object. use 790 kg/m3 as the density of the ethyl alcohol and 1000 kg/m3 as the density of water.
A Solid object is completely submerged in ethyl alcohol and water. Its apparent weight is 18.2 N and 14.8 N respectively. The volume of the object is 1652 cm³
This problem can be solved using the Archimedes principle, that is the upward buoyant force on an object that is immersed in a fluid is equal to the weight of the displaced fluid, or, mathematically:
F = -ρgV
Where:
ρ = fluid density
g = gravitational acceleration = 9.8 m/s²
V = volume of the displaced fluid
In the given problem, let:
F1 = upward buoyant force in ethyl alcohol
F2 = upward buoyant force in water
The apparent weight is equal to the weight - buoyant force.
In ethyl alcohol:
w + F1 = 18.2
w - 790 x gV = 18.2 (Equation 1)
In water:
w + F2 = 14.8
w - 1000 x gV = 14.8 (Equation 2)
Substract equation 2 from equation 1
w - 790 x gV = 18.2
w - 1000 x gV = 14.8 _
210 x gV = 3.4
V = 3.4 / (9.8 x 210) = 0.001652 m³
= 1652 cm³
Hence, the volume of the object is 1652 cm³
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How high up is a 5 kg object that has 400 joules
of Energy?
(Round to two decimal places)
Answer:
8.15 m
Explanation:
Potential Energy = m g h
400 = 5 * 9.81 * h
h = 8.15 m
Early skeptics of the idea of a rotating earth said that the fast spin of earth would throw people at the equator into space. The radius of earth is about 6400 km. Show why this objection is wrong by determining the following information.
The radius of earth is about 6400 km.
The new inflationary model was good attempt to explain why the universe is expanding. This could explain why there is so much of matter.
Invariant conditions coexist in inertial frames. These are the frames that obeys newton's law of motion. The Lorentz and gauche configurations co-ordinate out the space and time as minoskwi space with the fourth co-ordinate with position time pair. Earth is flat oval shaped with bulged towards equator and flat at poles.
Since the equatorial plane has greater side compared to polar plane and gravity has less impact on equator due to this factor.
Mathematical Reasoning-
[tex]equator > polar\\\\ge < gp[/tex]
[tex]F=G\frac{Mm}{R^2}[/tex]
[tex]F=mg[/tex]
[tex]g=\frac{GM}{R^2}[/tex]
g ∝ R⁻²
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as they reach an intersection, you realize you are in the straight lane and you intended to make a left turn. what should you do
You should turn left and must yield to oncoming vehicles going straight.
Left turns must give way to oncoming traffic. A four-way stop allows the first driver to reach the intersection ahead of the other drivers after coming to a complete stop. Drivers entering the driveway from a driveway alley or curb must yield to vehicles already on the main road.
Gradually decelerate while looking in the rearview mirror. Transfer to the left lane. Watch out for oncoming vehicles and pedestrians. A green light means GO but you must let any remaining vehicles bicycles, or pedestrians at the intersection pass before you can proceed. You can turn left only if there is enough room for oncoming traffic bicyclists or pedestrians to turn before it becomes dangerous.
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If a wave has a wavelength of 50 m and is traveling through water that is 30 m deep, what kind of wave is this?.
If a wave has a wavelength of 50 m and is traveling through water that is 30 m deep then this kind of wave is called deep water wave.
How is it a deep water wave?By definition, deep-sea waves are waves that occur at depths greater than half the wave's wavelength.In this case the wave wavelength is 50 m and the water depth is 30 m.Half the wave wavelength is 25 m.And this waves become deep sea waves or water waves.What is a deep water wave?Deep-sea waves occur when the depth is more than half the wavelength. Mathematically, deep-sea waves are defined as waves originating in the deep ocean that are greater than twice the wavelength of the wave. For example, if a particular wave has a wavelength of 10 meters, it is considered a deep-sea wave if the depth of the ocean where it originates is greater than 5 meters.Can learn more about deep water waves from https://brainly.com/question/23269505
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a spherical, convex mirror has a radius of curvature of 0.123 m. what is the focal length of the mirror? (in m; answer sign and magnitude)?
To find the spherical convex mirror radius, learn the focal length and magnitude.
What is focal length?
The focal length of a thin lens in air is measured from the lens's center to its primary foci, also known as focal points. The focal length of a converging lens, such as a convex lens, is positive and determines how far a collimated light beam must travel to focus on a single point.
What is magnitude?
Magnitude typically refers to size or distance. By comparing the size and motion speed of the object, we can relate magnitude to movement. The object's or quantity's size determines its magnitude.
R=0.123m
Focal length E= R/2
E= - 0.0615m.
Therefore, the focal length is 0.0615m.
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which of the wavelengths most likely corresponds to the wavelength of the most intense line in xenon's emission spectrum?\
The wavelength that most closely matches the wavelength of the strongest line in the emission spectra of xenon is 492 nm.
The correct option is D.
What emission range does xenon have?A contained inductively linked plasma discharge running at atmospheric pressure and 350 W is said to have produced pristine xenon, krypton, and neon emission spectra spanning the spectral range of 200 to 900 nm.
What is the function of wavelength?wavelength: The separation between a wave's peaks or troughs in a series. It is moreover one of the "yardsticks" for radium measurement.
What is the name of wavelength?The light source is the distance between its two crests or troughs, much like the wavelength of a light wave. It is named that used the Greek letter lambda. The distance between the crest or dip of one wave and the succeeding wave is therefore referred to as the wavelength.
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Complete question is:
Which of the wavelengths most likely corresponds to the wavelength of the most intense line in xenon's emission spectrum?
404 nm.
656 nm.
597 nm.
492 nm.
Block A has a mass of 10 kg and block B has a mass of
6 kg. They are connected by a rope and pulley system as
shown in the diagram on the right.
What must the coefficient of static friction be
between block A and the table for neither block to
move?
Acceleration will be zero when there is no movement. The coefficient of static friction is 0.6
What is Friction ?Friction is a force that opposes motion. It is static in a stationary object while dynamic in a moving object.
Given that Block A has a mass of 10 kg and block B has a mass of
6 kg. They are connected by a rope and pulley system as shown in the diagram in the question. Since both blocks are not moving, acceleration a = 0
The weight W on block B = mg
W = 6 × 9.8
W = 58.8 N
This weight will be equal to the tension T pulling block A. That is,
T = μN = W
Where the normal force N on block A = mg
N = 10 × 9.8
N = 98 N
Substitute N and T to find the coefficient of static friction μ
58.8 = 98μ
μ = 58.8/98
μ = 0.6
Therefore, 0.6 must be the coefficient of static friction between block A and the table for neither block to move
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Idil’s momentum is 110 kg-m/sec when she walks at 2 m/sec. What’s her mass?
Answer:
Explanation:
Given:
p = 110 kg·m/s
V = 2 m/s
___________
M - ?
Momentum
p = M·V
Mass
M = p / V = 110 / 2 = 55 kg
7) A net force of 6. 6 N acts on 9. 0 kg hamster. If this
object accelerates from rest to 3. 0 m/s west
>a) How far did the hamster travel?
The distance of the object is 12.27m
We are given that,
The net force = F = 6.6N
The mass = m = 9.0kg
The velocity of the object = v = 3.0m/s
Therefore , the hamster is travelled distance ,that can be calculated by Newton's second law of motion,
F = ma
F = (mv²)/r
r = (mv²)/F
Putting the above values in the given equation,
r = (9.0kg)(3.0m/s)²/6.6N
r = 12.27m
Therefore, the hamster travelled 12.27m.
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Connor is driving to a concert and needs to pay for parking. There is an automatic fee of $8 just to enter the parking lot, and when he leaves the lot, he will have to pay an additional $2 for every hour he had his car in the lot. How much total money would connor have to pay for parking if he left his car in the lot for 3 hours? how much would connor have to pay if he left his car in the lot for tt hours?.
Connor has to pay for parking if he left his car in the lot for 3 hours will be $10. The expression will be C = 13 -t for t hours.
Solution:
The expression for t hours will be:-
Gas left after t hours: 13−1t
Cost of gas left after 3 hours: 13−1(3)= $10
Therefore, Connor has to pay for parking if he left his car in the lot for 3 hours will be $10. The expression will be C = 13 -t for t hours.
It's okay to hold hands. In small towns putting your arm around your partner can cause glare. Avoid cuddling on public benches queues and restaurants. Also, don't look into each other's eyes affectionately when there are other people around. It's best not to kiss or hug Japanese people to greet them. While Westerners often kiss on the cheek as a greeting, Japanese prefer bowing and shaking hands. In addition, public declarations of love are not considered good manners.
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what is the size and position of an image formed by a plane mirror? question 20 options: same size, closer to the mirror same size, same distance away from the mirror enlarged, closer to the mirror reduced, farther from the mirror
Same size image is formed by a plane mirror, and same distance away from the mirror is formed by a plane mirror.
How an image is formed by a plane mirror.?To see an example of how a mirror can reflect an image, simply visit the nearby restroom. The images of a plane mirror are identical to the object in terms of size, location, and orientation (they are "upright").
Take note of how the observer perceives the reflected rays as coming from the mirror's reflection. These rays actually originate from the reflection locations on the mirror. Because the image behind the mirror cannot be projected onto a screen and instead only appears to come from a single location behind the mirror, it is known as a virtual image.
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a 4.0 m radius circular platform accelerates from rest at 10.0 rad/s2. what is the linear displacement of the edge of the circular platform after 2.0 s?
A 4.0 m radius circular platform accelerates from rest at 10.0 rad/s2. The linear displacement of the edge of the circular platform after 2.0 s will be 80 m .
theta = omega * t + 1/2 * alpha * [tex]t^{2}[/tex]
omega = angular velocity
alpha = angular acceleration
using equation
theta = omega * t + 1/2 * alpha * [tex]t^{2}[/tex]
= 0 + 1/2 * 10 * 4 = 20 rad
linear displacement = radius * theta
= 4 * 20 = 80 m
A 4.0 m radius circular platform accelerates from rest at 10.0 rad/s2. The linear displacement of the edge of the circular platform after 2.0 s will be 80 m .
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Jack is trying out a new skateboard that he got for his birthday. He puts one foot on the skateboard and the other foot on the ramp. He notices that when he pushes off of the ramp with his foot, his body and the skateboard move forward up the ramp. He wants to investigate this phenomenon to answer the question: What causes this motion? He determines that he needs to figure out which force pair is involved with the motion he experiences.
the value of the resistance in a conductor is decided by what factors? group of answer choices cross sectional area material length
The connection (R=Al) states that the resistance of a conductor depends on its resistivity, length, and cross-sectional area.
The connection (R=Al) states that the resistance of a conductor depends on its resistivity, length, and cross-sectional area. Other physical elements like temperature and others do affect it. Ohm () is its SI unit.The degree to which an object obstructs or resists an electric current is referred to as resistance. The movement of electrons is referred to as electric current. Consider the scenario of a person navigating a busy market and encountering difficulty moving from one shop to another to better understand resistance.
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_____ is a branch of science that involves the study of the physical world; _____ is the language of physics.
H2 + O = H2O which are the reactants and which are the products?
please answer
The reactants are shown on the left and the products are shown on the right. For example: hydrogen and oxygen can react to form water as shown in the equation below. 2H2 + 02 → 2H2O (You can disregard the numbers in the equations during this activity.)
Explanation:
hydrogen+oxygen= water
In the reaction shown, iron reacts with water to form iron oxide (Fe3O4) and hydrogen gas (H₂).
3Fe + 4H₂0
Fe3O4 + 4H₂
Which of these BEST describes the iron (Fe) reactant?
A. molecule
B. ion
C. compound
D. Element
Cold water does not react with iron. Iron, however, interacts with steam to create iron and hydrogen oxide. Fe3O4 + 4H2 = 3Fe(s) + 4H2O. Iron (II, III) oxide, also known as ferric oxide (Fe3O4), is a combination of Fe O and Fe2O3.
What happens when water and iron are combined?Ferric oxide (Fe2O3) and hydrogen gas are produced when ferrous oxide (Fe O) and water (H2O) combine (H2). This reaction yields a black solid called Fe3O4, which is frequently used as an antirust pigment. Understanding the chemical equation for this reaction is required to determine whether a specific mixture will produce Fe3O4: 2Fe3+(aq)+3H2 = 2Fe(s)+3H2(g) (g). According to this equation, two moles of iron metal will interact with to create two moles of ferric ion and three moles of hydrogen gas, it takes three moles of hydrogen gas. All of the iron will be transformed to Fe3+ ions and no Fe3O4 will occur if the combination only contains one mole of each component.
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5.1 box is being being dragged to right 32.59 N force accelerating 3.0 m/s ^2 how strong is force of friction acting on the box
The force of friction acting on the box is 17.29 N.
What is force of friction?
The force of friction is a type of force that tries to stop an object in motion or tries to resist an object from moving.
The magnitude of the force of friction is determined by applying Newton's second law of motion as shown below;
F - Ff = ma
where;
Ff is the force of friction = ?F is the applied force on the box = 32.59 Nm is the mass of the box = 5.1 kga is the acceleration of the box = 3 m/s²Ff = F - ma
Ff = 32.59 - (5.1 x 3)
Ff = 17.29 N
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A satellite revolves around a planet at an altitude equal to the radius of the planet. The force of gravitational interaction between the satellite and the planet is f0. Then the satellite is brought back to the surface of the planet. Find the new force of gravitational interaction f4.
A Satellite revolves around the plant at altitude equal to R , radius of planet . The relationship between new gravitational force (f₄) and gravitational force f₀ is f₄ = 4 f₀.
.
Gravity is the force that attracts any two objects that have mass. Gravity is called gravitational force because it always tries to pull mass together and never push it away. In fact, every object, including you, is pulling on every other object throughout the universe! This is called Newton's law of universal gravitation. It is very noticeable in celestial bodies with huge masses such as the Sun, Earth, and Moon. This is because the force is proportional to the mass of the object. It is responsible for the movement of the planets around the sun and the moon around the earth. People also exert forces on each other, but due to their relatively small mass this is not very important . It is noted by G and mathematically ,
Gravitational force= Gm₁×m₂ /d²
where m₁ and m₂ are masses of two objects and d ----> distance between the centres of two objects and G is gravitational constant.
In question we one body is planet and other will be satellite.
Let us consider
M ----> Mass of plant
m------> mass of satellite
R ---> radius of planet
In first case, when satelite at a distance say altitude is equal to radius of planet (R) and the distance between the centres of two masses is 2R. Gravitational force between them is
(f₀ ) = GMm / (2R)²= GMm/ 4R² ---(1)
where, G---> gravitational constant
In second case, the satalite is on surface of a planet and distance between two masses is R.
New gravitational force between two bodies is
f₄ = GMm/ R²-----(2)
comparing (1) and (2) we get,
f₀ = f₄/4 => f₄ = f₀
Hence, the relationship between new gravitational force (f₄) and and gravitational force (f₀) is f₄= 4f₀.
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why does a solid break at one location vs another
Answer:
can you provide a paper so I can see exactly what u have to do so I can help because I think I know the aswer
two wires have the same diameter and same resistance. if one is made of copper, and the other is of silver, which wire is longer?
The silver wire will be longer than the copper wire as the silver has the high expandability than the copper and not just that the silver is very good conductor for electricity but we use copper for wires cause of there cheap availability.
what is resistance?
The amount that an object impedes or resists in an electric current is referred to as resistance. Electric current is the flow of electrons. Consider an example of a person attempting to move from one shop to another in a busy market. This condition is eerily similar to an electron attempting to pass through a wire.
Resistance is the property of materials that allows electric current to flow. Resistance unquestionably resists the passage of current. Furthermore, the unit of resistance is ohms, which is symbolised by the Greek capital letter omega. Furthermore, resistance is affected by the voltage across a resistor as well as the current running through it. Resistance is a measure of the resistance to current flow in an electrical circuit.
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A 24-v battery is powering a light bulb with a resistance of 2. 5 ohms. What is the current flowing through the bulb?.
The current passing through the bulb having a voltage of 24 V is 9.6 Amperes
The potential difference of the bulb = 24 V
The resistance of the bulb = 2.5 ohms
The current flowing through the bulb can be found using ohm's law i.e.
I = V / R
where I is the current flowing through the bulb
V is the potential difference in the bulb
R is the resistance in the bulb
Let us substitute the known values in the above equation, we get
I = 24 / 2.5
= 9.6 A
Therefore, the current flowing through the bulb is 9.6 A
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How long does it take to raise a drawbridge?.
The drawbridge takes 18.33 mins to rise.
Given,
Let us assume that the total height of the bridge is h units.
The bridge takes 11/2 minutes to raise a height of 6h/20.
From hidden trial method we can say that;
If the drawbridge rise 6h/20 units in 11/2 minutes
Then, drawbridge rises 1 unit in the time = (11/2)/(6h/20)
So, the drawbridge rises h units in the time = (11h/2)/(6h/20)
= [tex]\frac{11h}{2}[/tex]×[tex]\frac{20}{6h}[/tex]
= 220/12
= 18.33 minutes
Hence, it takes 18.33 mins to raise the drawbridge.
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A drawbridge rises at a constant rate. It takes 1 1/2 minutes for the drawbridge to rise 6/20 of its total height. How long does it take to raise a drawbridge?
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