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The kid's speed at the bottom of the slide is 8 m/s.

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The nuclear fusion of hydrogen atoms releases a huge amount of energy. So the correct choice is C. Conversion of mass to energy.

What is nuclear fusion?

When two small nuclei join to form a new nucleus, then this process is termed nuclear fusion. A huge amount of energy is released when there occurs nuclear fusion between the two nuclei. And a new element is formed.

It has been observed that the amount of energy released in nuclear fusion is equal to the mass difference between the mass of the formed nucleus and the total mass of old nuclei. Hence in the nuclear fusion of hydrogen nuclei to form a helium nucleus, the energy is released due to the conversion of mass into energy.

The pressure is increased to make the hydrogen atoms fuse but this change in pressure does not contribute to the energy released in the fusion of hydrogen.

The magnitude of the gravitational field is too low and it does not contribute to the energy released in the fusion of hydrogen.

The gravitational collapse does not occur between the two hydrogen atoms. This phenomenon occurs in celestial bodies so this also does not contribute to the energy released in the fusion of hydrogen.

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Answer:

D

Explanation:

I could be wrong, But I'm pretty sure it's D

Explanation:

The planets never travel in a straight line as they orbit the Sun. According to Newton's second law of motion, this must mean that: Your Answer: The planets have angular momentum.'

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According to Newton's second law of motion, this must mean that force is acting on the planets. The correct option is (b).

As per Newton's second law of motion, an object's acceleration is inversely related to its mass and directly proportional to the net force exerted on it.

The curving courses of the planets in their solar system show that they are constantly changing their direction, as it causes them to accelerate.

The planets are being accelerated in the direction of the Sun as a result of the Sun's gravitational pull on them. The planets continually speed up toward the Sun due to the centripetal force required to maintain them in their orbits, which is caused by the gravitational attraction between the Sun and the planets. As a result, the planets orbit the Sun in elliptical patterns rather than in a straight line.

Hence, According to Newton's second law of motion, this must mean that force is acting on the planets. The correct option is (b).

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The complete question is:
The planets never travel in a straight line as they orbit the Sun. According to Newton's second law of motion, this must mean that _________.

(a) the planets are always accelerating

(b) a force is acting on the planets

(c)  the planets have angular momentum

(d) the planets will eventually fall into the Sun

Answer:

800 N

Explanation:

The formula to solve this equation is stress = Force/ Area.

The first step is to rearrange this equation for force: Force = stress * area

The second step is to determine the area: A = pi/4 * d^2

A = pi/4 * (0.0016m)^2=0.00000201 m^2

The third step is to substitute the area back into the equation:

Force = (4 * 10^8)(0.00000201) = 804 N

804 N is approximately 800 N

The truck acceleration down the hill at a rate of roughly 0.8567 m/s². The acceleration can be expressed as a vector in component form, a = (0.8567 m/s², 0).

This section divides acceleration into two parts, the tangential component and the normal component. We can divide acceleration into I j, and k components in a manner similar to how we divide all vectors.

You can compute the gravitational force as follows:

F_gravity = m * g

where m is the truck's mass and g is gravity's acceleration, which is roughly 9.81 m/s².

F_gravity = 3000 kg * 9.81 m/s² = 29,430 N

F_parallel = F_gravity * sin(5°)

F_parallel = 29,430 N * sin(5°) = 2,570 N

F_net = m * a

2,570 N = 3000 kg * a

a = 2,570 N / 3000 kg = 0.8567 m/s².

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If the index of refraction of a refractive medium slows the light to 1.88 x 10^8 m/s. The index of the second medium is: 1.60.

Using this formula to find the index of the second medium

n = c/v

Where:

n = refractive index of the medium
c = velocity of light in vacuum

v = velocity of light in the medium.2

Let plug in the formula

n = (3 x 10^8 m/s)/ 1.88 x 10^8 m/s

n = 300,000,000/188,000,000

n = 1.595

n = 1.60 (Approximately)

Therefore we can conclude that the  refractive index of the medium is 1.60.

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Answer:

\(\boxed {\boxed {\sf 3.335 \times 10^{-11} \ N}}\)

Explanation:

We are asked to find the force of gravity between 2 objects. The following formula is used to calculate the attractive force of gravity:

\(F_g= \frac{Gm_1m_2}{r^2}\)

G is the universal gravitational constant or 6.67 × 10⁻¹¹ N*m²/kg². 1 mass is 1 kilogram and the other mass is 2 kilograms. R is the distance between the 2 objects, or 2 meters.

Substitute the values into the formula.

\(F_g= \frac {(6.67 \times 10^{-11} \ N*m^2/kg^2)(1 \ kg)(2\ kg)}{( 2 \ m)^2}\)

Multiply the numerator. The units of kilograms squared cancel.

\(F_g= \frac {(6.67 \times 10^{-11} \ N*m^2/kg^2)(2 kg^2)}{(2 \ m)^2}\)

\(F_g= \frac {(6.67 \times 10^{-11} \ N*m^2)(2 )}{( 2 \ m)^2}\)

\(F_g= \frac {(1.334 \times 10^{-10} \ N*m^2)}{ (2 \ m)^2}\)

Solve the exponent in the denominator.

\(F_g =\frac {(1.334 \times 10^{-10} \ N*m^2)}{ 4 \ m^2}\)

The units of meters squared cancel.

\(F_g =\frac {(1.334 \times 10^{-10} \ N)}{ 4}\)

\(F_g=3.335 \times 10^{-11} \ N\)

The force of gravity between the fruit is 3.335 × 10⁺¹¹ Newtons.

The current in r2 is -1.25 A, found by using Ohm's law.

B. To find the current in r2, we can use Ohm's law, which states that the current flowing through a resistor is equal to the voltage across the resistor divided by the resistance. In this case, we are given that the voltage across r2 is 28 V and the resistance is 8ω.

So, the current in r2 is 28 V / 8ω = 1 A. Additionally, we can use Kirchhoff's current law which states that the sum of the currents flowing into a node in a circuit is equal to the sum of the currents flowing out of the node.

By using this we can also find that the current flowing in r2 = (e1 - e2)/(r1+r2+r3) = (8-28)/(6+8+2) = -20/16 = -1.25 A.

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Current is the flow of the electronic charge.

Current is the movement of electric charge.

Thus, the option is B

Newton's first and second laws of motion both do, but I think the one you're looking for is: The First Law of Motion.  That description is a little more direct.

It says that if an object is not acted on by a net external force, then it continues in "constant, uniform motion".

The factors that can change the pattern observed on a screen during Young's double-slit experiment are given below:1. Width of the slit. 2. Distance between slits. 3. Distance between slits and screen. 4. Wavelength of the incident light. 5. Refractive index of the medium.

The factors that can change the pattern observed on a screen during Young's double-slit experiment are given below:

1. Width of the slit. The width of the slit can influence the diffraction pattern that is observed on a screen. When the width of the slit decreases, the central maximum of the diffraction pattern becomes broader, and the intensity of the secondary maxima reduces.

2. Distance between slits. The distance between the slits in the double-slit experiment also affects the pattern on the screen. The distance between the slits is equal to the spacing between the maxima. If the spacing between the slits decreases, the distance between the maxima decreases, and vice versa.

3. Distance between slits and screen. The distance between the slits and the screen is also a factor that can affect the diffraction pattern. When the distance increases, the spacing between the maxima becomes wider, and the intensity of the maxima decreases.

4. Wavelength of the incident light. The wavelength of the incident light is another factor that affects the diffraction pattern on the screen. When the wavelength increases, the spacing between the maxima increases, and vice versa.

5. Refractive index of the medium. The refractive index of the medium in which the light travels can also influence the diffraction pattern observed on a screen.

When the refractive index of the medium changes, the position of the maxima changes as well. These are the factors that can change the pattern observed on a screen during Young's double-slit experiment.

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"The statement ""a liquid at 20ºc is twice as hot as the liquid at 10ºc"" is false.

Temperature is a measure of the degree of hotness or coldness of an object or substance. Temperature is measured using the degree Celsius scale or the degree Fahrenheit scale. The Celsius scale is more widely used in scientific applications. A liquid at 20ºC has a higher temperature than a liquid at 10ºC, but it is not twice as hot. The difference in temperature between the two is only 10 degrees Celsius. In other words, the liquid at 20ºC is only 1.10 times as hot as the liquid at 10ºC.
Therefore, the statement ""a liquid at 20ºc is twice as hot as the liquid at 10ºc"" is false.

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Answer:

the car uses teleportation, to zip to one side of the photo, to the other

Explanation:

Answer:

Basketball players

Explanation:

Basketball players

Answer:

Given

Force of car (F) =6500N

acceleration (a) =7m/s2

R.tc maas=x

Form

F =ma (divid by m both sides)

m=F/a

m=6500N/7m/s2

m=928.6kg

mass =928.6kg

True. The direction of a vector can change when transformed from one coordinate system to another due to differences in orientation, scale, and origin of the two systems.

A quantity or phenomena with independent qualities for both magnitude and direction is called a vector. The term can also refer to a quantity's mathematical or geometrical representation. Velocity, momentum, force, electromagnetic fields, and weight are a few examples of vectors in nature.

A vector is a mathematical representation of direction and magnitude. The direction of a vector is dependent on the coordinate system in which it is defined. If a vector is transformed from one coordinate system to another, its direction can change due to differences in the orientation, scale, and origin of the two systems. This means that the same physical quantity can have different mathematical representations in different coordinate systems.

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The force required for the jet to take off from an aircraft carrier is 773,490 N (Newton).

To calculate the force required for the jet to take off from the aircraft carrier, you can use Newton's second law of motion, which is:

Force (F) = Mass (m) × Acceleration

(a) Given the mass (m) of the jet as 21,000 kg and the acceleration

To calculate the force required for the 21000 kg jet to accelerate at 36.9 m/s^2, we need to use Newton's second law of motion which states that force (F) is equal to mass (m) multiplied by acceleration (a).

So,

F = m x a
F = 21000 kg x 36.9 m/s^2
F = 773,490 N

∴ force required = 773,490 N

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The  magnitude and direction of the force on the charge​ is -12 N opposite the electric field

To calculate the force on a charge in an electric field, we make use of the formula below.

Formula

F = E×Q .......................... Equation 1

Where:

From the question,

Given:

Substitute these values into equation 1

Note: The negative sign indicates that the force is in the direction negative of the electric field.

Hence, The  magnitude and direction of the force on the charge​ is -12 N opposite the electric field

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Answer: A edge 202694020

Explanation:

The capacitance of an isolated conducting sphere of radius R is proportional to C. \((R^-2)\)

The capacitance of an isolated conducting sphere of radius R is given by the formula:

C = 4πεR

where C is the capacitance, ε is the permittivity of free space, and R is the sweep of the circle.

From this equation, we can see that the capacitance is straightforwardly corresponding to the sweep R. In any case, the response decisions propose a relationship that is corresponding to a force of R. We can revamp the recipe as:

\(C = k(R^-1)\)

where k is a constant of proportionality.

Taking the derivative of both sides with respect to R, we get:

\(dC/dR = -k(R^-2)\)

This shows that the capacitance is proportional to \((R^-2)\)

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Answer:

Gravity

Explanation:

Projectiles are objects that are thrown or launched and are only under the influence of gravity. When an object is thrown under the action of gravity, it whos projectile motion. The object that is being thrown is called a projectile.

Hence, the correct option is "gravity".

The correct statement that explains why material A, despite having the same mass as material B, is higher in density.The correct answer is option OA.

Density is defined as mass divided by volume. Since the samples have the same mass, the difference in density must be due to a difference in volume. When material A is denser than material B, it means that material A has a smaller volume for the same mass compared to material B.

Option A suggests that the particles in material B are more closely packed together than in material A. This means that material B occupies a smaller volume for the same mass, resulting in a higher density. In contrast, material A has its particles less densely packed, leading to a larger volume for the same mass and a lower density.

Options B and D are incorrect because they incorrectly assume that the mass of the particles themselves differs between the materials, which is not given in the question. Option C is incorrect because it suggests that material A has a greater volume, which contradicts the given information that the samples have the same mass.

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The probable question may be:

Samples of different materials, A and B, have the same mass, but the sample

of A is higher in density. Which statement could explain why this is so?

OA. The particles that make up material B are more closely packed together than the particles that make up material A.

OB. The particles that make up material B have more mass than the particles that make up material A.

OC. The sample of material A has greater volume than the sample of material B.

OD. The particles that make up material A have more mass than the particles that make up material B.

The speed of a ball that is thrown upward into the air, neglecting air resistance, changes over time due to the force of gravity. The ball's velocity decreases as it rises, reaches zero at the peak of its trajectory, and then increases as it falls back towards the ground.

The motion of an object under the influence of gravity can be described by the laws of physics. When a ball is thrown upward into the air, it initially moves with a certain velocity. However, as the ball rises, its velocity changes due to the force of gravity acting on it. In this answer, we will neglect the effect of air resistance and focus solely on the effect of gravity.

When a ball is thrown upward, it has an initial velocity, which is equal to the magnitude of the velocity with which it was thrown. This velocity is positive, meaning that it points in the upward direction. However, as the ball rises, it is slowed down by the force of gravity, which acts in the downward direction. As a result, the velocity of the ball decreases over time.

The acceleration due to gravity, g, is a constant 9.8 m/s^2, and it acts in the downward direction. The equation for velocity, v, as a function of time, t, can be expressed as v = v0 - gt, where v0 is the initial velocity. This equation shows that the velocity of the ball decreases linearly with time as it rises into the air.

At the peak of its trajectory, the ball has zero velocity. This means that it is momentarily at rest, and from this point on, it begins to fall back towards the ground. The velocity of the ball at this point is negative, meaning that it points in the downward direction. As the ball falls, its velocity increases due to the force of gravity, and it continues to increase until it reaches the ground.

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Answer:

The Big Dipper

Explanation:

Bootes is near the "Big Dipper" which is itself part of Ursa Major.

The velocity of the water at the given points (2.0, 4.0) is approximately 5.06 m/s.

To find the velocity of the water at the point (2.0, 4.0), we need to calculate its components: the horizontal velocity (v_x) and the vertical velocity (v_y).

Given that v_x is constant at 5.0 m/s, the horizontal velocity component remains the same regardless of the position.

To find the vertical velocity component, we can differentiate the equation for the path of the water with respect to x:

y = 4.0 + 0.8x - 0.40x^2

Differentiating both sides with respect to x:

dy/dx = d/dx (4.0 + 0.8x - 0.40 \(x^2\))

= 0 + 0.8 - 0.80x

Now, substitute the x-coordinate of the point (2.0, 4.0) into the derivative:

dy/dx at x = 2.0 = 0.8 - 0.80(2.0)

= 0.8 - 1.6

= -0.8 m/s

Therefore, the vertical velocity component (v_y) at the point (2.0, 4.0) is -0.8 m/s.

To find the resultant velocity (v) at that point, we can use the Pythagorean theorem:

v = \(\sqrt{v_x^2 + v_y^2}\)

\(= \sqrt{5.0^2 + (-0.8)^2}\)

\(= \sqrt{25.0 + 0.64}\)

\(= \sqrt{25.64}\)

\(\approx 5.06 , \text{m/s}\)

Hence, the velocity of the water at the point (2.0, 4.0) is approximately 5.06 m/s.

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Answer:

b: density decreases

e: volume increases

Explanation:

When the water changes to ice, there won't be a loss of water, so the mass will be the same. However the ice will occupy more space, so the volume will increase. Then, since density is the mass divided by the volume, if the volume increase and the mass stays the same, the density decreases.

So, the answers are:

b: density decreases

e: volume increases

During normal flight with a vacuum driven attitude indicator, control pressures normally should not move the horizon bar more than one-half bar width, with not more than an additional one-half bar width for normal flight deviations. The correct option is C.

In flight, the control pressures should not move the horizon bar more than one-half bar width with not more than an additional one-half bar width for normal flight deviations while using the vacuum-driven attitude indicator. It's crucial to understand the types of answers before we proceed thorough and complete solution to the problem

In contrast, a short answer provides a brief solution to the problem or During normal flight with a vacuum driven attitude indicator, control pressures normally should not move the horizon bar more than one-half bar width, with not more than an additional one-half bar width for normal flight deviations.

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Answer:

20 ohms

Explanation:

Resistance=Potential difference÷Electric current

X=260÷13

X=20

Answer:

The normal force exerted on the skateboarder by the bump is less than the weight of the skateboarder

Explanation:

The given parameters are;

The location of the skateboarder = The top of the circular bump

The direction of motion of the skateboarder = Rightward

Therefore, given than the skateboarder has both horizontal angular motion (moving rightward) and vertical angular motion (over the bump), The effect of the weight of the skateboarder on the ground is reduced by the centripetal forces acting on the skateboarder and the normal force exerted on the skateboarder by the bump is equal to the reduced weight and is therefore less than the actual weight of the skateboarder.

The normal force exerted on the skateboarder is less than the weight due to the effect of centripetal force.

Given data:

The position of skateboarder is at top of the circular bump.

And direction of motion of Skateboarder is towards rightward.

Since, the skateboarder is undergoing the motion over the circular path, then it will have both horizontal angular motion (moving rightward) and vertical angular motion (over the bump).

The effect of the weight of the skateboarder on the ground is reduced by the centripetal forces acting on the skateboarder and the normal force exerted on the skateboarder by the bump is equal to the reduced weight and is therefore less than the actual weight of the skateboarder.

Thus, we can conclude that the normal force exerted on the skateboarder is less than the weight due to the effect of centripetal force.

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