Leslie and Marcus are
arguing over a teddy
bear. Both kids are
pulling with 25 N of
force
what newton’s law is it

Answer:

C. ultraviolet light

Explanation:

Ionizing radiation begins in the electromagnetic spectrum at the frequency of ultraviolet (UV) light. UV light has a higher frequency than visible light but lower frequency than X-rays and gamma rays, which are also considered ionizing radiation. When UV light interacts with matter, it can ionize atoms and molecules, leading to potentially harmful effects on living organisms. Therefore, it is important to take precautions and limit exposure to ionizing radiation.

Time = distance / velocity

52.1 meters / 18.5 m/s = 2.82 secondsT

Answer:

blahhhhhh ummm

Explanation:

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Therefore, when you apply twice the force (2f) to the object, it will travel twice the distance (2x) in the same time.

When you push an object of mass m from rest with a force f, it will travel a certain distance x in a certain time.

This can be explained by Newton's second law, which states that the acceleration of an object is directly proportional to the force applied to it and inversely proportional to its mass. Mathematically, this can be written as:

a = f / m

where a is the acceleration, f is the force, and m is the mass of the object.

Now, let's consider what happens when you apply twice the force, 2f, to the object. According to Newton's second law, the acceleration will also be doubled since the mass remains the same. Therefore, the new acceleration, a', can be written as:

a' = 2f / m

Given that the object traveled a distance x in the initial case, we can use the equation of motion:

x = (1/2)at²

where x is the distance traveled, a is the acceleration, and t is the time taken.

Using this equation, we can calculate the time taken for the initial case:

x = (1/2)(f / m)t²

Rearranging the equation, we find:

t^2 = (2mx) / f

Now, let's consider the case when the force is doubled. The new distance traveled, x', can be calculated using the same equation of motion:

x' = (1/2)a't²

Substituting the value of a' and rearranging the equation, we get:

x' = (1/2)((2f / m)t²)

Simplifying further, we find:

x' = (2/f) * (f / m) * (2mx) / f

Canceling out the common factors, we have:

x' = 2x

In conclusion, when you apply twice the force to an object of mass m, it will travel twice the distance in the same time.

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Answer:

sorry im doing a challenge but i will have someone answer it

Explanation:

Answer:

4.42 m/s EAST

Explanation:

Conservation of Momentum Law:  total momentum before the collision must equal the total momentum after the collision.

Momentum = P = mv

East is the positive direction.

(3000 kg)(15 m/s) - (2200 kg)(10 m/s) = (3000 kg + 2200 kg)v

45,000 kg·m/s - 22,000 kg·m/s = (5200 kg)v

23,000 kg·m/s = (5200 kg)v

v = (23,000 kg·m/s) / 5200 kg = 4.42 m/s EAST

The direction is east because the final velocity is (+)

length of V-50 = 49mm

length of V-1 = 49/50mm

= 0.98mm

so,

minor measurement = (M-1) - (V-1)

= 1mm -0.98mm

= 0.02mm

☆ Therefore,

The minor measurement of the vernier scale is 0.02mm.

☆...hope this helps...☆

_♡_mashi_♡_

Answer:  The speed of wave is 2m/s.

Explanation:

The speed of wave equals to the distance/time. So when we divide 4m and 2s, we get that the speed of wave is 2m/s

The mass of a ball is 3.5 kg. It moves down a slope that is inclined at 40 degrees with respect to the horizontal. The base of the slope has a length of 4.8 meters.the ball loses 106.2 Joules of gravitational potential energy when it rolls down the slope.

It is required to determine how much gravitational potential energy the ball loses when it rolls down the slope.For this, we need to use the following formula:ΔPE = mghwhere m = mass of the ball = 3.5 kgg = acceleration due to gravity = 9.81 m/s2h = height from which the ball rolls downLet's analyze the situation. The ball moves down a slope. The potential energy (PE) of the ball at the top of the slope is converted into kinetic energy (KE) as it moves down the slope. The ball gains KE, and it loses PE.The height from which the ball rolls down the slope is given by the following expression:h = length of slope × sin θh = 4.8 × sin 40°h = 3.086 metersSubstitute the given values into the formula for ΔPE.ΔPE = mghΔPE = 3.5 × 9.81 × 3.086ΔPE = 106.2 JoulesTherefore, the ball loses 106.2 Joules of gravitational potential energy when it rolls down the slope.

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The only other factor you need is the height of the object in real life (otherwise you could be photographing a model which is much closer to the camera).

The maths isn't actually that complex, the ratio of the size of the object on the sensor and the size of the object in real life is the same as the ratio between the focal length and distance to the object.

To work out the size of the object on the sensor, work out it's height in pixels, divide by the image height in pixels and multiply by the physical height of the sensor.

So the whole sum is:

Distance to object equation

The speed of light that emerges from a pane of glass compare with the speed of light incident on the glass because The emerging and incident speed of lights are the same.

Light is a phenomenon which is defined as the electromagnetic form of energy which gives us the sensation of vision.

Speed is defined as the rate of change of distance travelled by a body per unit time.

The speed at which the light propagates through the medium is known as Speed of light. It is a fundamental constant of the nature. In all inertial frames of reference the speed of light in free space has the same value.

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The student says that there is a gravitational attraction between the two of them. This student is correct.

The force of attraction between any two bodies is directly proportional to the product of their masses and is inversely proportional to the square of the distance between them, according to Newton's universal law of gravitation.

The gravitational force is weak unless there are massive masses involved. As compared to Earth, humans have relatively low masses, which results in a very small and negligible gravitational force. As a result, although it is tiny and imperceptible, gravitational force exists between two people seated near to one another.

Hence, the student, who says that there is a gravitational attraction between the two of them, is correct.

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Answer:

the force of resistance on the right team is 360 N

Explanation:

Given;

force of the left team, = 1000 N

total mass of the right team, m = 300 kg

acceleration of the right team, a = 1.2 m/s²

The force of resistance of the right team is calculated as;

Force = mass x acceleration

Force, F = 300 x 1.2

Force = 360 N

Therefore, the force of resistance on the right team is 360 N

Answer:

The cha-cha-cha, is a dance of Cuban origin. It is danced to the music of the same name introduced by Cuban composer and violinist Enrique Jorrin in the early 1950s. This rhythm was developed from the danzón-mambo

Explanation:

hope this helps you

..........

Answer:

The correct option is;

C. 40 N

Explanation:

Given that the rock is on the ground, we have;

The weight of the rock, \(F_W\) = 40 N ↓

From Newton's third law of motion, we have that action and reaction are equal and opposite,

Therefore, given that the weight of the rock exerts a force of 40 N on the ground, and the rock is stable and stationery on the ground, then the ground is reacting to the weight of the rock with an equal force of 40 N, acting in opposite direction to the weight of the block to balance the weight of the rock and create equilibrium such that the net force acting on the rock is zero

∑F = \(F_W + F_R\) = 0

Where;

\(F_R\) = The reaction of the ground

We have;

\(F_W\) + \(F_R\)= 40 + \(F_R\)  = 0

\(F_R\) = 0 - 40 = -40

\(F_R\) = -40 N ↓

∴ \(F_R\) = 40 N ↑.

Answer:

C, 40N

Explanation:

Answer:

hope this helps

Explanation:

Of the three phases of matter (gas, liquid, and solid), sound waves travel the slowest through gases, faster through liquids, and fastest through solids

so your answer would be B.

υx(t) is the x-component of the squirrel's velocity as a function of time. It represents the rate of change of the squirrel's x-position with respect to time.

To determine υx(t), the x-component of the squirrel's velocity as a function of time, you first need to know the squirrel's position function in the x-direction, which is represented as x(t). The position function could be given as a formula, or you might need to find it based on other information.

Once you have the position function x(t), you can find the x-component of the velocity by taking the derivative of x(t) with respect to time. This derivative, denoted as υx(t) or dx/dt, will give you the rate of change of the squirrel's x-position over time, indicating its velocity in the x-direction.

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Answer:

P = I * V        definition of power

a)   P = V^2 / R        since  = I = V / R

R = V^2 / P = 120^2 / 100 = 144 ohms

b)     R = 120^2 / 60 = 240 ohms

c)     I = P / V       from top equation

I1 = 100 W/ 120  V = .833 amps          (P = 120^2 / 144 = 100 W)

I2 = 60 W / 120 V = .5 amps              ( P = 120^2 / 240 = 60 W

The magnetic force exerted on the wire is 1.29 N.

When a current-carrying wire is placed perpendicular to a magnetic field, it experiences a force known as the magnetic force. This force is given by the formula F = BIL, where F is the force in Newtons, B is the magnetic field strength in Tesla, I is the current in Amperes, and L is the length of the wire in meters. Plugging in the given values, we get F = (0.720 T) * (0.864 A) * (2.35 m) = 1.29 N. Therefore, the magnetic force exerted on the wire is 1.29 N.

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Answer:

The velocity after 2 seconds can be found through:

V = u +a*t

Where V is final velocity, u is initial velocity, a is acceleration and t is time.

V = 0 + 2* 2= 4 meters/second

The distance (s) can be found through:

V^2= u^2 +2*a* s

Where V is final velocity, u is initial velocity, a is acceleration.

4^2= 0^2 + 2 *2*s

16= 0 + 4s

s= 4 meters

Distance (s) can also be found through:

s= ut + 1/2 at^2

s= 0+ 1/2 *2*2^2= 1 *2*2

s= 4 meters

Explanation:

Answer:

Velocity

Explanation:

You would be describing the velocity of the car.

Velocity in physics is defined as Vector quantity that describes the displacement of an object with respect to the time it takes to attain it. Displacement is the addition of direction to the speed of an object. The displacement is noted in the question, "traveling eastward". While it is stated that the car travels at 44.704 m/s. Ordinarily, it would have been tagged speed, if not for the direction added to it which makes it velocity.

I hope you understand.

His final velocity at the end of the 2.6 seconds will be  25.48 m/s

given

time = 2.6 seconds

initial velocity = u = 0

acceleration = acceleration due to gravity = 9.8 \(m/s^{2}\)  (since , it is a free fall )

final velocity = ?

using kinematics equation

v = u + at

v = u - g*t

v = - 9.8 * 2.6 = - 25.48 m/s

His final velocity at the end of the 2.6 seconds will be  25.48 m/s in downward direction

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It emphasizes how much humans rely on fossil fuels, even though they release carbon dioxide. So, option B.

Fossil fuels are used to generate energy; they are used in houses to generate heat, in large power plants to generate electricity, and in engines to generate power.

80 percent of the world's primary energy demand is currently met by fossil fuels, and the energy system is responsible for about two thirds of all CO2 emissions in the world.

Particularly with regard to indoor air quality in many less developed countries, these are incredibly inefficient and polluting. Sustainable development is hampered by the utilization of renewable biomass in this manner.

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The total reluctance  is the sum of the reluctances of the iron core and the air gap is 33.773 H⁻. The current required to produce a flux density of 0.5 T in the air gap is approximately 0.0497 A.

The reluctance (R) of a magnetic material is given by R = l / (μ₀μrA), where l is the length, μ₀ is the permeability of free space (4π x 10^-7 H/m), μr is the relative permeability, and A is the cross-sectional area. The mean path length of the core is given as 40 cm, and the cross-sectional area is 12 cm².

\(R_{iron} = l_{iron\) / (μ₀μr_\(ironA_{iron\)).

\(R_{iron\)= (40 cm) / (4π x 10^-7 H/m * 4000 * 12 cm²)

\(R_{iron\)= 0.02653 H⁻¹

The length of the air gap is given as 0.05 cm. We need to consider the effective cross-sectional area of the air gap, which is increased by 5 percent due to fringing. The actual cross-sectional area of the air gap is 0.05 cm * 12 cm². Therefore, the effective cross-sectional area is 1.05 * (0.05 cm * 12 cm²).

\(R_{air_{gap\)= (0.05 cm) / (4π x 10^-7 H/m * 1 * 1.05 * (0.05 cm * 12 cm²))

                  = 33.747 H⁻¹

The total reluctance  is the sum of the reluctances of the iron core and the air gap:

\(R_{total} = R_{iron }+ R_{air_{gap\)

            ≈ 33.773 H⁻¹

(b) The magnetic field intensity (H) is related to the current (I) and the number of turns (N) by H = (N * I) / l. The magnetic flux density (B) is related to the magnetic field intensity and the relative permeability (μr) by B = μ₀μrH.

To achieve a flux density of 0.5 T in the air gap, we can rearrange the equation B = μ₀μrH to solve for H:

H = B / (μ₀μr) = 0.5 T / (4π x 10^-7 H/m * 1)

H = 397.887 A/m

Now, we can solve for the current (I) using the formula H = (N * I) / l:

397.887 A/m = (400 turns * I) / 0.05 m

I = (397.887 A/m * 0.05 m) / 400 turns

I ≈ 0.0497 A

Therefore, the current required to produce a flux density of 0.5 T in the air gap is approximately 0.0497 A.

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Answer:

Are you looking for the formula? because if so:

M L^2 T^-3 I^-2

Explanation:

May I have brainliest please? :)

The net radiant energy lost by the 2-cm-diameter cylinder per meter of length is X Joules. The temperature of the 6-cm-diameter cylinder is Y °C.

To calculate the net radiant energy lost by the 2-cm-diameter cylinder per meter of length, we need to consider the Stefan-Boltzmann law and the emissivities of both cylinders. The formula for net radiant heat transfer is given:

Q_net = ε1 * σ * A1 * (T1^4 - T2^4)

Where:

- Q_net is the net radiant energy lost per meter of length.

- ε1 is the emissivity of the 2-cm-diameter cylinder.

- σ is the Stefan-Boltzmann constant (5.67 x 10^-8 W/(m^2·K^4)).

- A1 is the surface area of the 2-cm-diameter cylinder.

- T1 is the temperature of the 2-cm-diameter cylinder.

- T2 is the temperature of the surroundings (27 °C).

To calculate the temperature of the 6-cm-diameter cylinder, we can use the formula for the net radiant energy exchanged between the two cylinders:

Q_net = ε1 * σ * A1 * (T1^4 - T2^4) = ε2 * σ * A2 * (T2^4 - T3^4)

Where:

- ε2 is the emissivity of the 6-cm-diameter cylinder.

- A2 is the surface area of the 6-cm-diameter cylinder.

- T3 is the temperature of the 6-cm-diameter cylinder.

By solving these equations simultaneously, we can find the values of Q_net and T3.

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A long cylinder having a diameter of 2 cm is maintained at 600 °C and has an emissivity of 0.4. Surrounding the cylinder is another long, thin-walled concentric cylinder having a diameter of 6 cm and an emissivity of 0.2 on both the inside and outside surfaces. The assembly is located in a large room having a temperature of 27 °C. Calculate the net radiant energy lost by the 2-cm-diameter cylinder per meter of length. Also, calculate the temperature of the 6-cm-diameter cylinder

The characteristic of Romanticism in art that is NOT included is a simplified composition that clearly depicts individual forms. This answer is letter B.

Explanation: Romanticism is a cultural movement, artistic, and literary movement that began in Europe in the late 18th and 19th centuries. It emphasized emotional response, individualism, imagination, and subjectivity.The characteristic of Romanticism in art that is NOT included is a simplified composition that clearly depicts individual forms. This answer is letter B. This is because Romanticism in art emphasizes emotion, individualism, and imagination. Romantic art is characterized by the following features:

Vast landscapes of untouched nature;

Emotionally distraught figures;

Exotic subject matter not commonly seen in Western Europe;

An emphasis on the individual, the subjective, and the personal;

Highly expressive use of color and brushwork.

Conclusion: The answer to the question is letter B, a simplified composition that clearly depicts individual forms is NOT characteristic of Romanticism in art. Romantic art, instead, emphasized emotional response, individualism, imagination, and subjectivity.

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