Two small objects A and B are fixed in place and separated by a distance of 3.00 cm in a vacuum. Object A has a
charge of +2.00 С and object B has a charge of -2.00 C. How many electrons must be removed from object A and
placed on object B to make the electrostatic force into an attractive force with a magnitude of 68.0 N.

Answer:

Archimedes' principle states that the upward buoyant force that is exerted on a body immersed in a fluid, whether fully or partially submerged, is equal to the weight of the fluid that the body displaces.

Light is perceived as having color because of the way our brains interpret the wavelengths of light that reach our eyes.

This statement above is based on the scientific understanding of color and light. Light is a type of electromagnetic radiation that travels through space in waves. The color we perceive depends on the wavelength of the light; different wavelengths are perceived as different colors. However, light itself does not have a color, it is simply a form of energy.

Our brain interprets the wavelength of light that enters our eye and assigns it a color based on past experiences and cultural norms. This means that the concept of color is a subjective interpretation, and is not inherent in the light itself. So, it can be said that color exists only in our minds.

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Answer:

Explanation:

a) To get a rainbow from a prism arrangement, we will need

First, you cut a slit in one end of the cardboard with the pen knife.

Next you open up a space on top of the cardboard through which you can observe the experiment and its result.

Next, you place the triangular prism with its slant face facing the the cut slit.

Finally, position the slit to face the light from the open window, and adjust the prism till the projected bands of colored light (rainbow) is very much obvious on the other end of the box, opposite the slit.

b) For a light to yield rainbow, it most be composed of different component colors of light. The colors of light is due to the difference in wavelength, and dispersion is due to the different in the wavelengths of the component light. So to get rainbow from a light source, the light must not be monochromatic. This means that only light composed of component light of different colors can produce rainbow. Light from the sun for example is composed of 7 distinct colors of light, and white light can be created with just three colors; blue, green, and red light.

The value of the angular acceleration the eyelid undergoes while closing is 4.91 rad/s².

The tangential acceleration of the edge of the eyelid while closing is is 0.061 m/s².

The angular acceleration of an object is the change in angular displacement of an object with time.

α = θ/t

where;

α = (0.27/55 x 10⁻³)

α = 4.91 rad/s²

The tangential acceleration of an object is defined as the rate of change of tangential velocity of the matter in the circular path.

a = αr

a = (4.91 rad/s²)(0.0125 m)

a = 0.061 m/s²

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Answer:

21.899 m

Explanation:

The explanation here is a little differe because we are starting from rest. So, everyone does physics a little differently, but what I would start with is trying to find the accelaration. I've given the formula, now you are able to plug this into the displacement formula where you Velocity Initial = 0m/s (Since you are starting from rest) and V final = 6.00 m/s...

You just plug numbers into the formula after solving for accelaration and do some simple algebra! I hope this helps! I am attaching a new pdf for visuals! If you can't open it let me know! Also there is a star by accelaration because I didn't know if I spelled it right, sorry!

Answer:

yes

Explanation:

because it will help find who did the crime and it can also open jobs and opportunities for the people who likes sicnenae

Answer: Lungs

Explanation:

Answer: C. Ask a question that can be answered by making observations.

Explanation: Just did it

The ball left the bat at an angle of 45° from the horizontal, and then the ball was in the air for 4.51 seconds.

To calculate how long the ball was in the air, we can break down the motion of the ball into its horizontal and vertical components. Given that the ball was hit at an angle of 45° from the horizontal, we can determine the initial velocities in the horizontal and vertical directions.

The horizontal component of the initial velocity (Vx) remains constant throughout the motion because there is no horizontal acceleration. The vertical component of the initial velocity (Vy) can be calculated using trigonometry, knowing that the angle is 45° and the magnitude of the velocity is 125 m (450 ft).

Vy = V * sin(45°)

Vy = 125 m/s * sin(45°)

Vy = 125 m/s * √(2)/2

Vy ≈ 88.4 m/s

Next, we can analyze the vertical motion of the ball. The ball is subject to a constant acceleration due to gravity, which is approximately 9.8 m/s². Using this acceleration, we can calculate the time it takes for the ball to reach its maximum height and then fall back down to the ground.

Using the kinematic equation:

Vy = V0y + a * t

where Vy is the final vertical velocity (which is 0 m/s at the highest point), V0y is the initial vertical velocity, a is the acceleration due to gravity (-9.8 m/s²), and t is the time.

0 = 88.4 m/s - 9.8 m/s² * t

Solving for t:

t = 88.4 m/s / 9.8 m/s²

t ≈ 9.02 s

Since the time calculated is for the total time of the ball's flight (going up and coming back down), we can divide it by 2 to get the time the ball was in the air:

t_air = t / 2

t_air ≈ 4.51 s

Therefore, the ball was in the air for approximately 4.51 seconds.

It's important to note that this calculation assumes ideal conditions and neglects factors such as air resistance, variations in gravitational acceleration, and any other external factors that could affect the ball's flight.

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Answer:

22.11 m/s

Explanation:

The force acting on the car are its weight and the normal force. Then,

Since it is a circular path the net force is equal to mass times the centripetal acceleration, so we get the equation above.

When the car loses contact with the ground, the normal force is 0, so the given equation is

Then, we can solve for v as follows

Therefore, replacing g = 9.8 m/s² and r = 49.9 m, we get

So, the fastest speed that the car can go over the hill without losing contact with the ground is 22.11 m/s

Answer:

 \(v_{x}\) = \(v_{ox}\) = 140 m / s

Explanation:

This is a projectile launch, in this case the components of the initial velocity are seen

Since there is no rice in the X axis, so the velocity is vx, it must be constant, at all times

              \(v_{x}\) = \(v_{ox}\) = 140 m / s

The vertical component of velocity changes due to having applied the gravity fiate

             \(v_{y}\) =  \(v_{oy}\) - g t

The velocity in which this second particle finds itself at a distance r2 = 25,0 cm from point P is 17.22 m/s.

The electric force between the two particles is calculated from Coulomb's law of electrostatic force.

F = kq₁q₂/r²

where;

F = (9 x 10⁹ x 3.10 x 10⁻⁶ x 3.10 x 10⁻⁶) / (0.09 m)²

F = 10.68 N

The velocity in which this second particle finds itself at a distance r2 = 25,0 cm from point P is calculated by applying the principle of conservation of energy.

W = ΔK.E

where;

Fr = ¹/₂mv²

2Fr = mv²

v² = 2Fr/m

v = √(2Fr/m)

v = √(2 x 10.68 x 0.25 / 1.8 x 10⁻²)

v = 17.22 m/s

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Answer:

Explanation:

individual and then net

hope that helps I could be wrong about this one though

Answer:

A force of attraction that exists between any two masses, bodies, or particles.

Explanation:

Answer:

The gravitational force is a force that attracts any objects with mass. You, right now, are pulling on every other object in the entire universe! This is called Newton's Universal Law of Gravitation. ... And if you triple the distance between two objects, you reduce the force to a ninth.

Explanation:

ANSWERS

(a) 3.58 x 10⁶ N/m

(b) 5.8 x 10⁶ J

EXPLANATION

Given:

• The mass of the object hanging from the spring, m = 4.00 x 10⁵ kg

Find:

• (a), The force constant the springs should have to make the object oscillate with a period of 2.10 s

• (b), The energy stored in the springs for a 1.80 m displacement from equilibrium.

(a) The period of an object in a spring is,

Where m is the mass of the object and k is the spring constant.

We want to find k for T = 2.10 s, so we have to solve this equation for k, which gives us,

Replace the known values and solve,

Hence, the force constant is 3.58 x 10⁶ N/m.

(b) The energy stored in a spring with force constant k when the mass is displaced x meters from equilibrium is,

Replace the known values and solve to find the energy stored in this spring,

Hence, the energy stored in the spring for a 1.80 m displacement from equilibrium is 5.8 x 10⁶ J.

The magnitude of the resultant vector to round the answer to the nearest tenth, we look at the digit in the hundredth's place. If this digit is 5 or greater, we round up. If it is less than 5, we round down.

In the study of physics, we use vectors to represent quantities that have both direction and magnitude. It is often the case that we want to add two or more vectors together to obtain a single vector that represents the net result of these additions. The process of adding two or more vectors together is known as vector addition.The magnitude of the resultant vector is the length of the line that represents it on a scale drawing.

When we add two or more vectors together, the resultant vector is the vector that represents the net result of these additions. To find the magnitude of the resultant vector, we use the Pythagorean theorem, which states that the square of the hypotenuse of a right triangle is equal to the sum of the squares of the other two sides.

In the case of vector addition, the hypotenuse is the resultant vector, and the other two sides are the component vectors. If we have two vectors a and b, the magnitude of the resultant vector is given by the following equation:|R| = √(ax2 + bx2)where R is the resultant vector, a and b are the component vectors, and x is the angle between the vectors.

For example, if the answer is 12.345, we would round it to 12.3.

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The resultant velocity of the jacob while crossing chattooga river is found as  6.5 m/s with the direction heading south east.

Due to kayaker and the river, we obtain two perpendicular velocities: 2.5 m/s across the river in an easterly direction, and 6 m/s downstream in a southerly direction.

The Pythagorean Theorem predicts the size of a resultant velocity as follows:

v = √(2.5)² + (6)²

v = √42.25

v = 6.5 m/s

The resultant direction will be south east.

Thus, the resultant velocity of the jacob while crossing chattooga river is found as  6.5 m/s with the direction heading south east.

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Answer:

Anthropology, Economics and management, History, Human services, political science, psychology, sociology

Answer:

a reaction between an acid and a base

Explanation:

Answer:

The answer is A. A reaction between an acid and a base

Explanation:

The acceleration of the SRB and main engine during the first 2.0 minutes of flight is 52.16 m/s².

The given parameters;

The acceleration of the SRB and main engine is calculated as follows;

\(a = \frac{\Delta v}{\Delta t } \\\\a = \frac{7600 - 1341}{2 \times 60 s} \\\\a = 52.16 \ m/s^2\)

Thus, the acceleration of the SRB and main engine during the first 2.0 minutes of flight is 52.16 m/s².

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Answer:

Hypothesis

Explanation:

because in science a hypothesis is a guess/question that you test. it can be changed many times

Answer:

C) experiment. Is the answer.

hypothesis is the educated guess about what the result of the experiment is before conducting the experiment.

Observation is what you see and record during the experiment.

The small ball loses 2.37% of its kinetic energy during the elastic head-on collision with the stationary bigger ball.

\(\frac{Kf}{Ki} =\) \(1- [\frac{1}{2}][ \frac{M}{m}] [\frac{2mv^{2} }{[M+m]^{2} }\)

M = 12m

Kf/Ki = 1 - (1/2)(12m/m)[(2mv^2)/(13m)^2]

Kf/Ki = 165/169

(1 - Kf/Ki) x 100% = (1 - 165/169) x 100% = 2.37%

So, the small ball loses 2.37% of its kinetic energy during the elastic head-on collision with the stationary bigger ball.

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Gerard's average velocity for the ride is 6 meters per second.

To find Gerard's average velocity for the ride, we can use the formula:

Average velocity = Total displacement / Total time

First, we need to convert the distance traveled from kilometers to meters:

7.20 kilometers * 1000 = 7200 meters

Next, we convert the time from minutes to seconds:

20.0 minutes * 60 = 1200 seconds

Now, we can calculate the total displacement by subtracting the initial position from the final position. Since Gerard is riding directly east, there is no change in the east-west direction, so the displacement is equal to the distance traveled:

Total displacement = 7200 meters

Finally, we substitute the values into the average velocity formula:

Average velocity = 7200 meters / 1200 seconds

Average velocity = 6 meters per second

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Answer:

amperes

Ammeter, instrument for measuring either direct or alternating electric current, in amperes. An ammeter can measure a wide range of current values because at high values only a small portion of the current is directed through the meter mechanism; a shunt in parallel with the meter carries the major portion.

Explanation:

hope it helps

Answer:

206.8965517 n

Explanation:

First, we need to see that 60:29 is 2.078965517:1. Then we need to multiply the energy put 29 cm from the fulcrum by 2.078965517, giving us the end result of our answer.

electricity

Explanation:

the position (2,o