65. In a tug-of-war, each man on a 5-man team pulls with an average force of 500 N. What is the tension in the center of the rope?A) zero newtonsB) 100 NC) 500 ND) 2500 NE) 5000 N

Answer:

1/5 km/min

Explanation:

the formula for velocity is distance/time

so if i plug in the distance and time i get 5/25 or 1/5

Hope this helps!

Answer:

The answer is unbalanced

Explanation:

Though cases like these are not really how the science will be used, they illustrate the principle.

If the left art shows two big dogs pulling on a rope toy each pulling with a force of 20N in the opposite direction. The middle art shows a big dog on left pulling to the left on the rope toy with a force of 20N and a little dog pulling to the right with a force of 12N. The right art shows the rope toy tied to a post, with both dogs pulling on different parts of the toy and in the same direction. One large dog pulls with a force of 20 N and the small dog pulls with a force of 12 N. The atomic theory has been of priceless value to chemists, but it has more than once happened in the history of science that a hypothesis, after having been useful in the discovery Present and the co-ordination of knowledge, has been aban- position doned and replaced by one more in harmony with later of the discoveries

The amount of force exerted in each direction in the rope determines if the force in play is balanced or unbalanced ;

To determine if the force acting in two direction is balanced or unbalanced, we calculate the net force acting on the object.

If the netforce = 0 ; then the force is balanced, if otherwise , then it is unbalanced.

Left art :

Right art :

Middle :

Therefore, the value of the net force determines if the force is balanced or not.

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Answer:

1. the pencil would have the momentum and would keep going until it hits the windshield. 2. when the car suddenly accelerates, the pencil would be inert and it would move toward the back of the car until a constant speed from the car is reached.

The accelerometer measures acceleration, including the force of gravity. In a stationary position, the accelerometer should read an acceleration value close to 9.8 m/s² in the vertical direction (Ay axis) because it is sensing the gravitational force pulling downward.

The other two axes (Ax and Az) should be close to 0 since there is no significant movement or acceleration in those directions. On the other hand, a gyroscope measures angular velocity, which indicates rotational motion. In an ideal scenario, where the device is not experiencing any rotation, the gyroscope values should be essentially 0 on all three axes (X, Y, and Z).

When the device is rotated counterclockwise and then back clockwise, the gyroscope data will reflect the change in angular velocity. If the device is rotated counterclockwise, the gyroscope will detect a positive angular velocity along the corresponding axis. Conversely, if the device is rotated clockwise, the gyroscope will register a negative angular velocity. The gyroscope data values will indicate the magnitude and direction of the rotation, with positive values corresponding to counterclockwise rotation and negative values corresponding to clockwise rotation.

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Capacitance is the ability of an electrical conductor and insulator system to store electric charge when there is a potential difference between the conductors.

Capacitance is 3.54×\(10^{-9}\) F,  energy stored is \(2*10^5NC^{-1}\).charge on each plate is 3.54×\(10^{-6\) C.

a parallel - plate capacitor are 5mm apart and 2m² in area.

potential difference = 1k

d=5×\(10 ^ {-3}\)m,

A=2\(m^2\),

V=1000 volt,

Capacitance,  C=∈\(_0\frac{A}{d}\)

=(8.85×\(10^{-12}\)×2)/5×\(10^{-3}\)

=3.54×\(10^{-9}\) F

charge on each plate , q=CV=3.54×\(10^{-9}\)×1000

=3.54×\(10^{-6\) C

energy stored ,E=σ/∈0

=Q/(A∈0)

=(CV)/(A∈0)

=\(\frac{3.54*10^{-9}*1000}{2*8.85*10^{-12}}\)

=\(2*10^5NC^{-1}\).

Capacitance is 3.54×\(10^{-9}\) F,  energy stored is \(2*10^5NC^{-1}\).charge on each plate is 3.54×\(10^{-6\) C.

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Given that the radius of the circular path is r = 142 m and the coefficient of the friction is

The condition for the car to travel safely is

Frictional force = centrifugal force

Here, m is the mass of the car and the acceleration due to gravity is g = 9.8 m/s^2.

v is the maximum speed of the car.

Velocity can fluctuate in magnitude, direction, or both because it is a vector. Therefore, acceleration is a change in either direction or speed, or both.

Cosmic rays are subatomic particles that have been accelerated to extremely high energies in active galactic nuclei and supernovas, which are massive stars that explode.

Understanding the mechanisms that accelerate cosmic rays is crucial because these rays contain extremely invasive radiation that can harm spacecraft electronics.

The same direction as the change in velocity is the one in which acceleration is a vector. Velocity can fluctuate in magnitude, direction, or both because it is a vector.

Therefore, Velocity can fluctuate in magnitude, direction, or both because it is a vector. Therefore, acceleration is a change in either direction or speed, or both.

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Answer: I DISAGREE with Morgan

Explanation:

A compound is made up of two or more elements which are usually chemically bonded together. Such elements can only be separated by a chemical process and not by physical processes like filtration and decantation.

Examples of compounds includes:

--> Table salt(NaCl) this is a chemical compound which contains elements such as sodium and chlorine which are chemically bonded together.

--> water(H2O): this contains elements such as hydrogen and oxygen chemically bonded together

But substances such as sand is not a compound but a mixture which contains natural deposits of silicon dioxide, small rocks and other organic substances which are not chemically bond together.

Therefore, the combination of equal parts of salt and sand will lead to the formation of a HETEROGENEOUS MIXTURE not a compound.

This is a type of mixture in that made up of different compositions.

The given statement "A driver does not need to allow as much distance when following a motorcycle as when following a car." is FALSE.

When following a motorcycle, a driver should maintain the same safe following distance as when following a car. This distance provides adequate time to react in case the motorcycle stops suddenly or encounters an obstacle in the road. In general, drivers should follow the "3-second rule" when determining the safe following distance.

Motorcycles are smaller and lighter than cars, making them more vulnerable to road hazards such as potholes, debris, or uneven surfaces. Additionally, motorcycles can stop more quickly than cars, so maintaining a safe following distance is crucial to avoid a potential collision.

Motorcyclists may also need to make sudden maneuvers or adjust their position in the lane to avoid obstacles, maintain stability, or optimize visibility. Drivers should be aware of these factors and give motorcycles ample space to navigate safely.

Furthermore, drivers should be extra cautious in adverse weather conditions or on wet roads, as motorcycles are more susceptible to losing traction, which can result in a skid or fall. Increasing the following distance in these situations can help ensure the safety of both the motorcyclist and the driver.

In summary, it is false to claim that a driver does not need to allow as much distance when following a motorcycle as when following a car. A safe following distance is crucial for preventing accidents and ensuring the well-being of all road users.

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Answer:

Table tennis and tennis

Explanation:

Tennis and table tennis.

While two of them have tennis in their names, they're actually both different and very well so.

Tennis is a bigger version of table tennis that takes place on a land. It's usually played in a court, outside, or even inside some sports center.

On the other hand, table tennis is a "low level tennis". It takes place on a table, like its name implies, it is played in a table. Table tennis is usually played for a shorter when compared with tennis but they have a lot of things in common

Answer: A position- time graph shows how far an object has traveled from its starting position at any given time since it started moving. The steeper the line is, the greater the slope of the line and the faster the object's motion is changing

Explanation:

Answer:

33 Celsius is 306.15 in absolute temperature

Answer:

W = 210 N

Explanation:

For an ideal machine:

\(Work\ In = Work\ Out\\(P)(L)=(W)(H)\)

where,

P = Effort = Spring Scale Reading = 70 N

L = Effort Arm = Length of inclined plane = 12 m

W = Actual Load (Weight) to be lifted = ?

H = Load Arm = Height = 4 m

Therefore,

\((70\ N)(12\ m) = (W)(4\ m)\\\\W = \frac{(70\ N)(12\ m)}{4\ m}\)

W = 210 N

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Actually Welcome to the Concept of the Rays of light.

Since we know that, The light ray on a shiny surface makes a angle with the normal, hence The Angle of incidence is equal to angle of reflection made with Normal Axis in the middle.

Thus Option c.) is correct.

C.) is the Answer.

The angle of reflection given the incident ray from the given diagrams is option C.

When a light ray strikes the shining surfaces, the part of the light gets refracted. The bouncing back of the light is called reflection. When the light strikes the surface is called an incident ray.

When the light ray incident on the surface, the light returns back to the same medium is called reflection. The laws of reflection are, the angle of incidence is equal to the angle of reflection, and the incident ray, reflected ray, and normal takes place in the same plane. The speed of light remains the same in the process of reflection.

The reflected light ray changes the path of direction in the same medium. When a light ray enters from one medium to another, the speed of light gets decreases.

Thus, the ideal solution is option C.

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Answer:

no

Explanation:

this is because its valency shell is full so it wont want any other electrons in its valence shell.

That's a pretty good intuitive definition of a theory .

The given series, 1 + 7n Σ 57 n = 1, is divergent because the terms in the series continue to increase without bounds, the sum of the series also increases indefinitely.

To determine the convergence or divergence of the series, we can analyze its behaviour as n approaches infinity. The series can be written as Σ(1 + 7n*57) for n = 1 to infinity. By simplifying the expression, we have Σ(399n + 1) for n = 1 to infinity.

As n increases, the summand of the series grows linearly with a coefficient of 399. Since the coefficient is nonzero and positive, the series will diverge. This means that the sum of the series will not approach a finite value as n tends to infinity.

Therefore, the given series is divergent, and we cannot find its sum. It is important to note that a divergent series does not have a finite sum. Therefore, the sum of the given series is "DIVERGES."

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According to Wien's law, the color of the sun should be a bright white or slightly bluish-white. This is because Wien's law states that the peak wavelength of the sun's radiation is in the ultraviolet region, which corresponds to a color on the blue end of the visible spectrum.

However, since the sun emits radiation across a broad range of wavelengths, it appears as a bright white ball in the sky to the human eye.

Based on Wien's Law, the Sun's color is primarily white. Wien's Law helps determine the peak wavelength of radiation emitted by a black body, such as the Sun, based on its temperature. The Sun's surface temperature is around 5,500°C (9,932°F), which corresponds to a peak wavelength in the visible light spectrum, causing it to appear white to the human eye.

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Answer: b

Explanation:

b

Answer:

b

Explanation:

b

Answer:

The power of the car, the gear ratio, weight of the car, aerodynamics of the car, grip of the tires on the road, calorific value of the fuel used, and friction would affect the speed of the car.

The center of a 1.5 cm wide loop has a magnetic field of 3.0 mT. About 0.3 Amperes of current flow through the loop. A 3.0 mT magnetic field is present about 0.2 meters away from the wire.

To solve this problem, we can use the formula for the magnetic field produced by a current-carrying loop and the formula for the magnetic field produced by a current-carrying wire.

Answer of the following questions are below :  

(a) The magnetic field at the center of a current-carrying loop is given by the formula:

\(B = \frac{\mu_0 \cdot I \cdot N}{2 \cdot R}\)

Where B is the magnetic field, μ₀ is the permeability of free space (4π × 10⁻⁷ T·m/A), I is the current, N is the number of turns in the loop, and R is the radius of the loop.

We are given that the magnetic field is 3.0 mT (3.0 × 10⁻³ T) and the radius of the loop is 1.5 cm (0.015 m).

Substituting these values into the formula, we can solve for the current:

\(3.0 \times 10^{-3} \, \text{T} = \frac{4\pi \times 10^{-7} \, \text{T}\cdot\text{m/A} \cdot I}{2 \cdot 0.015 \, \text{m}}\)

Simplifying the equation, we find:

\(I = \frac{(3.0 \times 10^{-3} \, \text{T}) \cdot (2 \cdot 0.015 \, \text{m})}{4\pi \times 10^{-7} \, \text{T}\cdot\text{m/A}}\)

Calculating this expression, we get:

I ≈ 0.3 A

Therefore, the current in the loop is approximately 0.3 Amperes.

(b) The magnetic field produced by a long straight wire carrying current is given by the formula:

\(B = \frac{\mu_0 \cdot I}{2\pi \cdot r}\)

Where B is the magnetic field, μ₀ is the permeability of free space (4π × 10⁻⁷ T·m/A), I is the current, and r is the distance from the wire.

We are given that the magnetic field is 3.0 mT (3.0 × 10⁻³ T).

Substituting these values into the formula, we can solve for the distance from the wire:

\(3.0 \times 10^{-3} \, \text{T} = \frac{4\pi \times 10^{-7} \, \text{T} \cdot \text{m/A} \cdot I}{2\pi \cdot r}\)

Simplifying the equation, we find:

\(r = \frac{4\pi \times 10^{-7} \, \text{T} \cdot \text{m/A} \cdot I}{2\pi \cdot (3.0 \times 10^{-3} \, \text{T})}\)

Calculating this expression, we get:

r ≈ 0.2 m

Therefore, the magnetic field of 3.0 mT is found at a distance of approximately 0.2 meters from the wire.

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Answer:

None of the above. The tension in the rope is equal to the sum weight and mass times acceleration. Acceleration of the child points upwards toward the center of the motion.

Explanation:

The child is in a centripetal motion. As a result, acceleration of the child would point towards the center of the swing.

When the child is at the lowest point of the swing, the center of the swing is right above the child. Hence, the acceleration of the child would point directly upwards.

The weight of the child points downwards at all time.

Tension in the rope always point along the rope towards the center of the swing. Because the child is at the lowest point of the swing, the rope would be vertical, and tension in the rope would point upwards.

Both tension from the rope and weight are in the vertical direction. However, because weight points downwards while tension points upwards, magnitude of the resultant net force would be the difference between the magnitude of tension and magnitude of weight.

At the same time, the resultant force on the child is nonzero because it is equal to mass times acceleration (both are nonzero). Thus:

\((\text{net force}) = (\text{tension}) - (\text{weight})\).

\((\text{tension}) = (\text{net force}) + (\text{weight})\).

Therefore, the tension in rope would be equal to neither weight nor mass times acceleration, but the sum of the two.

\( \sf\huge{\underline{\underline{\overbrace{Answer}}}} \)

The height of the hill is 5m.

Explanation:

⠀

Mass of the car (m) = 800kg

Height of the hill (h) = ?

Gravitational field strength (g) = 10N/kg

Potential energy (P.E.) = 40,000J

⠀

⠀

The height of the hill

⠀

⠀

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The gravitational potential energy is the energy acquired by the object when the mass of the object is under the gravitational pull of the earth. It is directly proportional to mass and height of the object. If the mass or the height of the object increases the potential energy also increases.

⠀

If we keep a book on the table and if we push the book from the table. This will result in the falling of the book on ground due to gravitational pull of the earth of it's mass and height.

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⠀

⠀

While formula to find potential energy is

⠀

\( \tt{\Large {P.E. = mg}}h\)

But we need to find 'h'

so the formula for 'h' will be

⠀

\( \bold{\Large {h = \frac{P.E. }{mg} }}\)

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⠀

⠀

Now substituting the required values.

⠀

\( \sf \hookrightarrow h = \frac{40000}{800 \times 10} \\ \\ \\ \sf \hookrightarrow h = \frac{40 \cancel 0 \cancel 0 \cancel 0}{8 \cancel 0 \cancel 0 \times \cancel{10}} \\ \\ \\ \sf \hookrightarrow h = \frac{ \cancel{ 40} \: \:{ \small{5}}}{ \cancel 8} \\ \\ \\ \boxed {\hookrightarrow h = 5m}\)

In this circuit having  an operating heating element and lit lamp, the lamp is going to continue to be lit if the circuit is connected in parallel.

The term electric circuit has to do with the path that current can pass through. In a circuit, there are some  components that must be present in the circuit. The question is incomplete, the complete question is shown in the section marked 'missing parts'.

For the lamp in which there is also an operating heating element, the lamp will remain lit only when the circuit is connected in parallel because the potential difference across the components remain the same.

Missing parts:

An electric circuit contains an operating heating element and a lit lamp. Which statement best explains why the lamp remains lit when the heating element is removed from the circuit?

answer choices

The lamp has less resistance than the heating element.

The lamp has more resistance than the heating element

The lamp and heating element were connected in parallel.

The lamp and heating element were connected in series.

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Answer:

B

Explanation:

The appropriate choice to address the concern of interference from Earth's atmosphere would be:

B. Digital; digital signals can be designed to minimize the effect of interference.

Objects that are not actively moving but have the capacity to do so are said to possess potential energy.

Potential energy is the energy stored within an object due to its position or state. It has the capacity to be converted into kinetic energy when the object starts moving.

Entropy does not directly linked to an object's mobility; rather, it measures the disorder or unpredictability in a system. Potential energy is the energy that is held in reserve in a system or object based on its configuration or position. It is frequently linked to elastic or gravitational potential energy, rather than explicitly with an object's ability to move.

The concept of "living energy" is not one that is accepted by science. Energy is a fundamental aspect of the physical universe that is unrelated to living things by nature. Although energy is used and transformed by living things for their biological activities, the term "living energy" has no clear scientific definition.

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Answer:

Explanation:

Force= (q1q2)/(4/\Ęr2)

3×10^6= (1.602×10^-19)^2/(r^2)

r^2=(2.27×10^-33)/(3×10^6)

r^2=8.55×10^-45

r= 9.25×10^-23

Answer:

u would need to calculate both K. E and P. E

Explanation:

for K. E use = (mv^2)/2

for P. E use = m×g×h ;

where g is acceleration due to gravity and it's value is 10m/s^2