Explanation:
I'm not sure to be honest lol
Answer:
to turn the person on
Calculate the wavelength (in nm) of light that produces its first minimum at an angle of 22. 5° when falling on a single slit of width 1. 31 µm. Nm
When the light waves pass through the slit, the wave spreads, diffracting into a pattern on a screen behind it. The diffraction pattern is characterized by a series of bright fringes interspersed with dark ones.
We can calculate the distance between each dark fringe using the formula:dsinθ = mλ, where d is the width of the slit, θ is the angle of the dark fringe, m is the order of the fringe, and λ is the wavelength of the light.Let's now use this formula to solve the given problem. The first minimum occurs when m = 1. Therefore,1 × λ = d sinθ. The slit width is given as 1.31 µm = 1.31 × 10⁻⁶ m, and the angle of the dark fringe is 22.5°.We can convert this angle to radians as follows:θ = 22.5° = 22.5 × π/180 = 0.3937 radians.
Substituting the values into the formula, we get:λ = d sinθ / m= (1.31 × 10⁻⁶) × sin 0.3937 / 1= 7.52 × 10⁻⁷ m = 752 nmTherefore, the wavelength of light that produces its first minimum at an angle of 22.5° when falling on a single slit of width 1.31 µm is 752 nm (more than 100 words).
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Find the tension in the two ropes that are holding the 2.9 kg object in place. Rope 1 makes an angle of 51.3° with respect to the vertical. Rope 2 is pulling horizontally.
Answer:
Explanation:
Let the tension in horizontal rope be T₁ and in the other rope be T₂ which is making angle of 51.3⁰
The vertical component of tension T₂ will balance the weight .
= T₂ cos 51.3 = 2.9 x 9.8
T₂ = 2.9 x 9.8 / cos 51.3
= 28.42 / .625
= 45.47 N
The horizontal component of T₂ will balance T₁
T₂ sin 51.3 = T₁
45.47 sin 51.3 = T₁
T₁ = 35.48 N .
Why does the moon have more craters than the earth.
during episodes of non-compliance, it may be necessary to use which type of prompt?
During episodes of non-compliance, it may be necessary to use a more intrusive type of prompt. This could include physical prompts, such as gently guiding the individual towards the desired behavior, or verbal prompts, such as reminding them of the expectations or consequences of their behavior.
Physical prompts may be used when an individual is struggling with a task or not responding to verbal prompts. However, it is important to use these types of prompts in a respectful and non-threatening manner.
Verbal prompts may be more appropriate for individuals who are able to understand language and respond to instructions. These prompts should be clear and direct, using simple language and positive reinforcement when appropriate.
It is important to remember that the use of prompts should be individualized and based on the specific needs and abilities of the person. The goal is to provide support and guidance to help the individual successfully complete the task or behavior, while also respecting their autonomy and dignity.
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Find the average acceleration of a northbound subway train that slows down from 12 m/s to 9.6 m/s in 0.8 seconds.
Answer:
\(a=-3\ m/s^2\)
Explanation:
Given that,
Initial speed of a train, u = 12 m/s
Final speed of a train, v = 9.6 m/s
Time taken, t = 0.8 s
We need to find the average acceleration of the train. We know that the rate of change of velocity is equal to acceleration. So,
\(a=\dfrac{v-u}{t}\\\\a=\dfrac{9.6-12}{0.8}\\\\a=-3\ m/s^2\)
So, the average acceleration of the train is equal to \(-3\ m/s^2\).
Hello please .
How far would a person run in seconds at an average speed of 7ms-1
At an average speed of 7m/s, the distance covered in one second is 7 meters.
What is the distance covered in one second?Speed is simply referred to as distance traveled per unit time.
It is expressed mathematically as;
Speed = Distance ÷ time.
Given the data in the question;
Speed = 7m/sElapsed time = 1 secondDistance traveled = ?Plug the given values into the above formula and solve for distance traveled.
Speed = Distance ÷ time
Distance = Speed × Time
Distance = 7m/s × 1.0s
Distance = 7ms/s
Distance = 7m
Therefore, in a second, the person covers 7 meters.
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What is the mass amount of a Proton and a Neutron?
The masses amount of a proton and neutron are 1.0087 and 1.0073 amu respectively.
What is a Proton?This is defined as sub atomic particle which is positively charged and is present in the nucleus while the neutron is also a particle present in the nucleus but has a neutral charge.
Electrons on the other hand are found outside the nucleus and are negatively charged. It is the sub atomic particle which is actively involved in a chemical reaction.
The masses of neutron and proton are 1.0087 and 1.0073 amu respectively and was discovered by scientists thereby making it the most appropriate choice.
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who was albert einstien describe his contributions???
Answer:
Albert Einstein was from Germany he was born theoritical physicist, from childhood only he loved mechanical toys, he was highly gifted in Mathematics, He was a world citizen and a scientific genius too. His contribution were:
1) he developed the theory of relativity
2) he also discovered the process of nuclear fission
3)he developed the quantum theory of specific heat
4)theory of stimulated emission, on which laser device technology is based
5) law of photoelectric effect
hope it helped you :)
True or false. The period of a particle moving in a circle in a uniform B field is independent of the radius and speed of the particle.
Answer:
False. The period of a particle moving in a circle in a uniform B field is dependent on the radius and speed of the particle. Specifically, the period is given by T = 2πm/(qB), where m is the mass of the particle, q is its charge, B is the magnitude of the magnetic field, and the radius is given by R = mv/(qB), where v is the speed of the particle.
The period of a particle moving in a circle in a uniform B field is independent of the radius and speed of the particle is true because when a charged particle moves in a uniform magnetic field (B field), it experiences a magnetic force, which causes it to move in a circular path.
The period of this motion can be determined by the following equation:
T = 2πm / (qB)
In this equation:
- T represents the period of the particle's motion.
- m is the mass of the particle.
- q is the charge of the particle.
- B is the magnitude of the magnetic field.
As you can see, the period (T) is determined only by the mass (m), charge (q), and magnetic field strength (B). The radius and speed of the particle do not appear in this equation, which means the period is independent of these factors.
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What energy transformation takes place when you push a pencil off your desk? A. Mechanical energy transforms into kinetic energy. B. Potential energy transforms into nuclear energy. C. Potential energy transforms into kinetic energy. D. Kinetic energy transforms into potential energy.
When you push a pencil off your desk, the energy transformation that takes place is that potential energy transforms into kinetic energy.
The correct answer to the given question is option C.
Potential energy is the energy stored within an object because of its position or configuration.
In this scenario, the pencil has potential energy because of its elevated position on the desk. When the pencil is pushed off the desk, it begins to move, which means that it has kinetic energy. Kinetic energy is the energy of motion.
As the pencil falls off the desk, its potential energy is transformed into kinetic energy, which is the energy that results from its motion. The faster the pencil falls, the greater its kinetic energy will be because kinetic energy is directly proportional to the square of an object's velocity.
Therefore, when you push a pencil off your desk, the potential energy that it has because of its elevated position is transformed into kinetic energy as it falls towards the ground.
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A 4 kg book and a 7 kg lamp are both in the living room. If the force of gravity between them is 2.99 question text :Two asteroids are 75,000 m apart. One has a mass of 8 kg and the other 10 kg. If the force of gravity between them is 1.14 N, what is the mass of the other asteroid? 10-10 N, how far apart are they?
A.
2.12 m
B.
6.38 m
C.
2.50 m
D.
1.85 m
The force of gravity between them is 1.14 N, what is the mass of the other asteroid 10-10 N, they far apart are option (C) 2.50 m
To solve this problem, we can use the formula for gravitational force:
\(F = G * (m_1 * m_2) / r^2\)
where F is the force of gravity, G is the gravitational constant, m1 and m2 are the masses of the two objects, and r is the distance between their centers.
Plugging in the given values, we get:
2.99 N = G * (4 kg * 7 kg) /\(r^2\)
Solving for r, we get:
\(r^2\) = G * (4 kg * 7 kg) / 2.99 N
r =\(\sqrt(G * (4 kg * 7 kg) / 2.99 N)\)
r ≈ 2.50 m
Therefore, the answer is option (C) 2.50 m.
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The diagram below shows the path of a planet around a star.
At which point does the planet have the least gravitational force acting on it?
A. Point D
B. Point A
C. Point B
D. Point C
Answer:
Explanation:
The farther a celestial object (a mass in space) is from another, the less of a gravitational force that they have on each other.
what are the dimensions of the lightest open-top right circular cylindrical can that will hold a volume of 1000 cm3 ?
The dimensions of the lightest open-top right circular cylindrical can be 6.82cm.
How do you determine a hollow cylinder's dimensions?The following is the formula to get the volume of something like a hollow cylinder: The volume of a hollow cylinder is equal to (R2 - r2) h cubic units, where "R" denotes the cylinder's outer radius, "r" its inner radius, and "h" its height. Similar to a prism but having circular bases, a cylinder is a 3-D shape.
How to calculate dimensions of the lightest open-top right circular cylindrical?Given, volume of the cylinder = 1000cm³
volume of cylinder = πr²h
The bottom and sides are included in the surface area:
SA = πr²+2πrh
The second equation may be written as, after solving the first equation for h.
SA = πr² +2πr(V/(πr²)) = πr² +2V/r
Where the derivative is 0, the smallest area for the volume will be discovered.
d(SA)/dr = 2πr -2V/r² = 0
The can radius is thus,
r = ∛(V/π)
and it's height, h = V/(π(V/π)^(2/3)) = ∛(V/π) = r
The dimensions for the specified volume are
r = h = ∛(1000/π) ≈ 6.82cm
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60 points! Explain how fission can cause damage to living tissue (i.e. what does nuclear energy do to the tissue?)
Answer:
Radiation Released by Fission
When an atom is split, three types of radiation that can damage living tissues are released. ... Ionization is the transfer of energy to the molecules that make up tissue, breaking chemical bonds and causing damage to cells and to DNA.
Explanation:
thanks mark as brainiest,rate the answer
Explain how Earth can be in the middle of an ice age at the same time it is experiencing global warming.
Answer:
The winter solstice occurs around Dec 21 and the earth will still be cooling even tho after this time the days are getting longer.
The earth will not experience warming until sometime later and the heat received equals the heat radiated.
This is similar to ice age occurrences.
The earth can be warming, but it will take considerable time until the heat received exceeds the heat lost.
An alpha particle (a), which is the same as a helium-4 nucleus, is momentarily at rest in a region of space occupied by an electric field. The particle then begins to move. Find the speed of the alpha particle after it has moved through a potential difference of -3.45x10^-3 V The charge and the mass of an alpha particle are ga 3.20x10^-19 C and ma = 6.68x10^-27 kg, respectively.
what is the value of the change in potential energy, δu=uf−ui, of the alpha particle?
The speed of the alpha particle after moving through a potential difference of -3.45x10^-3 V is approximately 2.03x10^5 m/s, and the change in potential energy of the alpha particle is -2.2x10^-17 J.
To find the speed of the alpha particle after moving through a potential difference, we can use the equation for the change in potential energy (ΔU) and the conservation of energy. The change in potential energy is given by ΔU = qΔV, where q is the charge of the alpha particle and ΔV is the potential difference.
Given that the charge of the alpha particle is 3.20x10^-19 C and the potential difference is -3.45x10^-3 V, we can calculate the change in potential energy as ΔU = (3.20x10^-19 C)(-3.45x10^-3 V) = -2.2x10^-17 J.
Next, we can use the conservation of energy to determine the speed of the alpha particle. The change in kinetic energy (ΔK) is equal to the change in potential energy. Since the alpha particle starts at rest, the initial kinetic energy (Ki) is zero. Therefore, we have ΔK = Kf - Ki = 0.5mvf^2 - 0, where m is the mass of the alpha particle and vf is its final velocity.
Rearranging the equation, we find that vf^2 = 2ΔK/m. Substituting the values, we have vf^2 = 2(-2.2x10^-17 J) / (6.68x10^-27 kg), and solving for vf, we obtain vf ≈ 2.03x10^5 m/s.
In summary, the alpha particle reaches a speed of approximately 2.03x10^5 m/s after moving through a potential difference of -3.45x10^-3 V. The change in potential energy of the alpha particle is -2.2x10^-17 J.
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simple question..
Is speed the same as velocity?
Answer: no
Explanation: speed = rate of change of distance; distance/time
velocity = rate of change of displacement; displacement/time
Consider the following circuit of three resistors (R1, R2, and R3), with batteries that have emfs ℰ1 = 23. 5 V and ℰ2 = 42 V, and internal resistances r1 and r2.
Find the current I1, in amps.
Find the current I2, in amps.
Find the current I3, in amps
the current I1, in amps I1, the current I2, in amps I2, and the current I3, in amps I3, are each 2.40, 1.40, and 1.00 A, respectively.
Kirchhoff's rules and Ohm's law may be used to create a system of equations that will allow us to determine the current I1. We may start by writing the following equation for the outer loop using Kirchhoff's loop rule: ℰ1 - I1(R1 + R2) - I2R2 = 0
At the intersection of R2 and R3, we can then utilise Kirchhoff's junction rule to formulate the following equation: V2 = I2R2 V3 = I3R3: I2 + I3 = I1 R3
Also, we are aware that the voltage across R2 is the sum of the two emfs:
V2 = ℰ2 - I2r2
These equations allow us to find solutions for I1, I2, and I3. When we solve the set of equations, we obtain: I1 = 2.40 A
I2 = 1.40 A\sI3 = 1.00 A
The currents passing through each resistor in the circuit are represented by these values.
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what is terrestrial magnetism
Answer:
it the phenomenon which deals with earth's magnetic condition
What would happen if the gravitational force between the moon suddenly disappeared?
a recycling center uses magnetic damping to detect and separate certain materials. which materials will respond to this method? i. ferromagnetic conductors
Ferromagnetic conductors are materials that respond strongly to magnetic fields and are often used in applications such as electromagnets, motors, and generators.
As such, they would be expected to respond to magnetic damping in a recycling center and can be separated using this method. Materials known as ferromagnetic conductors react strongly to magnetic fields and are frequently employed in devices like electromagnets, motors, and generators.
Examples of ferromagnetic conductors that could be separated using magnetic damping in a recycling center include iron, cobalt, nickel, and some of their alloys, such as steel. However, it's worth noting that not all metals that respond to magnetic fields are ferromagnetic, and not all ferromagnetic metals are conductors.
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a solid cylinder has a mass of 5 kg and a radius of 30 cm. a torque of 40 nm is applied to the cylinder. what will be its angular acceleration?
A solid cylinder has a mass of 5 kg and a radius of 30 cm. a torque of 40 Nm is applied to the cylinder, then its angular acceleration 177.77 m/s^2.
Torque is a measure of the force that can cause an object to rotate about an axis. Just as force is what causes an object to accelerate in linear kinematics, torque is what causes an object to acquire angular acceleration. Angular acceleration is a quantitative expression of the change in angular velocity per unit time.
Let T be the torque, I be the Inertia and a be the angular acceleration.
In the angular form of Newton's second law, rotational inertia replaces mass and torque (tau) replaces force. The relationship between angular acceleration and torque is true when an object's rotational inertia is constant.
F = ma
T= I x a (1)
and I = 1/2 x M x R^2
I = 1/2 x 5 x (0.3)^2 Kgm^2
According to equation 1
a = T/I
a= 40/0.225 = 177.777 m/s^2.
Therefore, angular acceleration is 177.77 m/s^2.
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Plz I need the answer quick!!!
What is the definition of law of conservation of energy
Answer:
The law of conservation of energy states that energy can neither be created nor destroyed - only converted from one form of energy to another. This means that a system always has the same amount of energy, unless it's added from the outside. This is particularly confusing in the case of non-conservative forces, where energy is converted from mechanical energy into thermal energy, but the overall energy does remain the same. The only way to use energy is to transform energy from one form to another.
Explanation:
Hope this helps!
Answer:
means that energy can neither be created nor destroyed; rather, it can only be transformed or transferred from one form to another.
Explanation: this is a shorter answer.
What is 4.33 and 2.16?
A ray of light strikes a plane mirror at an angle of incidence of 60°, is reflected from the mirror and then strikes a second plane mirror placed so that the angle beftween the mirrors is 45°. The angle of reflection at the second mirror, in degrees, is
A 15
B 25
C 45
D 65
E 75
plz help me guys ASAP!
Answer:
60 - 45 = A. 15
Explanation:
Subtracted because the plane mirror at an angle is incidence of 60°, so then in order to find the value it would be 60-45 and not adding it or dividing and multiplying to find the value thus the answer is 15.
60 - 45 = A. 15. Subtracted because the plane mirror at an angle is incidence of 60°, so then in order to find the value it would be 60-45 and not adding it or dividing and multiplying to find the value thus the answer is 15.
What is Plane mirror?A flat or highly polished surface called a plane mirror reflects light or waves to create an image. It is a polished, smooth surface that creates a virtual representation of the actual object.
A plane mirror is a surface on which an image can only be produced by at least two light beams. The intersection of these two beams can occur inside the mirror or appear to occur somewhere behind the mirror.
The image that follows illustrates how an object appears when viewed via a plane mirror.
Therefore, 60 - 45 = A. 15. Subtracted because the plane mirror at an angle is incidence of 60°, so then in order to find the value it would be 60-45 and not adding it or dividing and multiplying to find the value thus the answer is 15.
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You are pushing a book across a desk with a constant velocity. What are the forces acting on the book and in what direction? Are the y-forces equal in magnitude, why or why not? Are the x-forces equal in magnitude, why or why not? Explain using Newton’s Second Law. If you push on the book, according to Newton’s Third Law of Motion, what is the equal and reactive force?
When you are pushing a book across a desk with a constant velocity, there are two forces acting on the book: friction and the force of your push.
The force of friction acts in the opposite direction to the motion of the book and opposes the motion of the book. The force of friction is caused by the interaction between the bottom surface of the book and the surface of the desk.
The force of your push acts in the same direction as the motion of the book and causes the book to move.
The y-forces on the book are not equal in magnitude, as there is only one force acting in the y-direction, which is the force of friction. The x-forces are also not equal in magnitude, as there is one force acting in the x-direction, which is the force of your push.
According to Newton's Second Law, the force acting on an object is equal to the mass of the object multiplied by its acceleration. In this case, since the book is moving with a constant velocity, the forces acting on the book are balanced, and the net force on the book is zero.
According to Newton's Third Law of Motion, for every action, there is an equal and opposite reaction. So, when you push on the book, the equal and opposite force is the force exerted by the book on your hand.
Answer:
The book is being pushed from the side meaning there are horizontal forces at work. The first is an applied force, the second is a force of friction against the motion. Since the book is moving at a constant velocity, the book is not accelerating. This means that the forces must be balanced.
Have a Nice Day : ) .
A driver realizes that she is traveling in the wrong direction on a one-way street. she has already driven 350 meters at a velocity of 16 meters per second, east before deciding to make a u turn. How long did it take for the driver to realize her error?
Equation: Solution:
Variables:
V=
D=
T=
it took 21.87 seconds for the driver to realize her error.
What is Speed?speed is described as. the pace at which an object's location changes in any direction. Speed is defined as the distance traveled divided by the travel time. Speed is a scalar quantity because it just has a direction and no magnitude.
Given, A driver realizes that she is traveling in the wrong direction on a one-way street. she has already driven 350 meters at a velocity of 16 meters per second, east before deciding to make a U-turn.
From the general formula of speed:
V = D/T
Wher, V= velocity,
D = distance, and
T = time
In our case,
V = 16 m/s
D = 350 m
Thus,
16 = 350 /T
T = 350/16
T = 21.875 s
therefore, it took 21.87 seconds for the driver to realize her error.
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let's say you push two wheelbarrows at exactly the same speed. which wheelbarrow will require more force to push at that constant speed.
If we push to wheelbarrow at exactly the same speed then the heavier wheelbarrow will require more force to push at that constant speed.
According to galileo's Law of Inertia and the first law of motion proposed by Newton,
If a body is in the state of rest or in the state of motion it will continue to do so, until and unless an external force is applied on the body to change it state of motion or state of rest.
According to Galileo, everybody possess some inertia.
Inertia can be defined as the property of the body that allows the body to regain its current state of rest or motion.
Inertia of a body is directly proportional to the mass of the body.
Hence we can conclude here, that the heavier wheelbarrow will require more force to push at a constant speed because we are trying to change the state of the wheelbarrow.
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The following statements are about voltage, current, and power.
Select all that are True.
a. The electric current in a series circuit is the same everywhere in the circuit.
b. The electric current in a circuit does not flow through the battery.
c. In a series circuit consisting of resistors, LEDs, light bulbs and a battery; the sum of the voltage drops across the resistors, LEDs and light bulbs in the circuit equals the voltage boost by the battery.
d. An amp is the same thing as a coulomb per second.
e. A volt is the same as a joule/coulomb.
f. A circuit has to be broken in order to measure the voltage across a component with a multimeter.
g. Electric power is destroyed when current moves through a resistor.
The following statements are true:
(a). The electric current in a series circuit is the same everywhere in the circuit. (c). In a series circuit consisting of resistors, LEDs, light bulbs, and a battery, the sum of the voltage drops across the resistors, LEDs, and light bulbs in the circuit equals the voltage boost by the battery.
(d). An amp is the same thing as a coulomb per second.
(e). A volt is the same as a joule/coulomb.
a. In a series circuit, the electric current remains the same throughout the circuit. This is because there is only one path for the current to flow, and it encounters the same amount of resistance in each component.
c. In a series circuit, the total voltage supplied by the battery is divided among the resistors, LEDs, and light bulbs. The sum of the voltage drops across these components is equal to the voltage provided by the battery. This is based on Kirchhoff's Voltage Law, which states that the total voltage around a closed loop in a circuit is zero.
d. An ampere (amp) is a unit of electric current, and it is defined as one coulomb of charge passing through a point in one second. Therefore, an amp is equivalent to a coulomb per second.
e. A volt is a unit of electric potential difference or voltage. It represents the amount of energy required to move one coulomb of charge between two points in a circuit. Hence, a volt is equivalent to a joule per coulomb.
In a series circuit, the current remains constant throughout the circuit because there is only one path for the current to flow. As the current encounters different components such as resistors, LEDs, and light bulbs, the voltage drops across each component. The sum of these voltage drops is equal to the voltage supplied by the battery, according to Kirchhoff's Voltage Law.
An ampere is the unit of electric current and is defined as one coulomb of charge passing through a point in one second. This means that in one second, a charge of one coulomb represents an ampere of current. Similarly, a volt is the unit of electric potential difference or voltage. It represents the energy required to move one coulomb of charge between two points in a circuit. To measure the voltage across a component in a circuit, a multimeter can be used without breaking the circuit. By connecting the multimeter in parallel across the component, the voltage can be measured without interrupting the flow of current.
Electric power is not destroyed when current moves through a resistor. In fact, electric power is dissipated as heat in a resistor due to the resistance encountered by the current. This is governed by Ohm's Law, which states that power is equal to the product of voltage and current (P = VI). Therefore, as current passes through a resistor, power is converted to heat.
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How do you find the force of a ping-pong ball rolling down a track?
Answer:
Weight
a) weight's vertical component = Normal upward force
b) weight's horizontal component = Friction force = (mass of ball)(acceleration)
These forces depend upon the track,
1) inclined or horizontal
2) steepness.
Explanation
The force of gravity points straight down, but a ball rolling down a ramp doesn't go straight down, it follows the ramp. Therefore, only the component of the weight which points along the direction of the ball's motion can accelerate the ball.
weight's horizontal component = Friction force = (mass of ball)(acceleration)
The other component pushes the ball into the ramp, and the ramp pushes back.
If the ramp is horizontal, then the ball does not accelerate, as gravity pushes the ball into the ramp and not along the surface of the ramp. Hope this helps. Can u give me brainliest
Explanation: