A student swings a ball on a light rod at a constant speed in a vertical circle, as shown in the figure. Which of the following correctly ranks the magnitudes of the forces exerted by the rod on the ball F1, F2, F3, and F4 when the ball is at locations 1, 2, 3, and 4, respectively? Responses

F1=F2=F3=F4
(F2=F3)>F4>F
F4>F1>(F2=F3)
F1>F4>(F2=F3)

The first law of thermodynamics is similar to the conservation of energy because both state that this element (i.e., energy) is not created/destroyed in the universe.

The first law of thermodynamics is a popular law in physics that states change in internal energy is equal to the energy added and the work made by a closed system.

Moreover, the law of conservation of energy states that it cannot be created/destroyed in the Universe, which is deeply associated with principles of thermodynamics.

In conclusion, the first law of thermodynamics is similar to the conservation of energy because both state that this element (i.e., energy) is not created/destroyed in the universe.

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The law of the conservation of energy relates to the first law of thermodynamics by the fact that the former forms the basis for the latter.

It follows from the study of physics that the basis for the postulation of the First law of thermodynamics is on the basis of the law of conservation of energy, which states that energy can neither be created nor destroyed, but can be transferred between forms.

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car's maximum cornering speed on a rainy day when the coefficient of static friction has been reduced by 50% is 27.58 m/s

Car's maximum speed at dry Sunny day,

Vs = √μrg = 39 m/s

Speed at rainy day, μ becomes 0.5μ

Vr = √(0.5*μ*r*g) =√(0.5) * (39) = 27.57716

Vr = 27.58 m/s

An object experiences static friction when a force is applied to it; as a result, the object resists the applied force and stays at rest until static friction is removed. In kinetic friction, the frictional force opposes an object's motion. An item is kept at rest by the force of static friction. The phrase "static friction" can be defined as "the friction people perceive when they attempt to move a stationary object on a surface, but without actually causing any relative motion in between  surface and the body it is on. A force acting in opposition to the direction of a moving body on the surface is felt.

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Answer:

It’s D

Explanation:

Because I took the USA test prep and got it right

The correct answer is that a falling object that has reached its terminal speed does not continue to gain acceleration or speed. Therefore option D, neither is correct.

When an object falls and reaches its terminal speed, it means that the object is experiencing a balanced state between the force of gravity pulling it down and the force of air resistance pushing against it.

At terminal speed, these two forces are equal in magnitude but opposite in direction, resulting in a net force of zero.

Since there is no net force acting on the object at terminal speed, the object does not experience any further acceleration. Acceleration is defined as a change in velocity, which requires a nonzero net force.

At terminal speed, the object's velocity remains constant and does not change.

Although the object does not gain any additional acceleration, it also does not gain any additional speed. The terminal speed is the maximum speed that the object can reach while falling through the air. Once the object reaches this speed, it remains constant and does not continue to increase.

Therefore, the correct answer is that a falling object that has reached its terminal speed does not continue to gain acceleration or speed.

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Answer:

Explanation:

See attachment.

Decreasing the mass of the objects   No.  Force will change.

Increasing the temperature of the objects Yes,  No change in force (at most a very small change if the heat causes excessive expansion, reducing the distance, although 1/2 will be further apart)

Increasing the distance between the objects No.  Force will change.

Decreasing the distance between the objects  No.  Force will change.

Answer:  Density is measured in kg⋅m−2 . This means that it is derived from fundamental units which are the kilogram and metre. ... hence the kilogram and the metre are SI units and density is a derived unit from these units

Explanation:

they are calculated from the base units mass and length. Density is one derived unit; force, area, volume, specific volume and mass fraction are also derived units. Each derived unit is defined by a quantity equation.

Answer:

Density is obtained through mathematical manipulation.

Explanation:

A derived unit is obtained through mathematical calculation and the result is written with the S.I unit kg/m³

Answer:

Constructive interference

Explanation:

Answer:

C. Constructive interference

Explanation:

Answer:

theory is an idea to explain something,

Explanation:

Einstein's ideas about relativity are an example of the theory of relativity.

Answer: If skin cancer is related to ultraviolet light, then people with a high exposure to uv light will have a higher frequency of skin cancer.

Explanation:

Answer:

A form of punctuation that marks the end of a sentence, statement, etc.

Explanation:

. is a period.

It can be used in a sentence, such as this one.

not sure what period you mean, but if you mean in history n stuff: it means a certain era/time something happened. like the "golden age" it's called that because it didn't last forever/ it was just a phase yknow?

We are aware, given that this is an isosceles triangle, that the height—also known as the altitude—divides the base into two equal portions. The Pythagorean theorem can be used to determine the triangle's height:

leg + (height) = (base/2)2 Using the following values as substitutes:

132 minus (height)2 equals (10/2)2 169 minus (height)2 equals 25 (height)2 equals 25 minus (height)2 equals -144 This is impossible due to the fact that the height of a triangle cannot be negative. This indicates that the problem statement must contain an error. Please double-check the values of the triangle's legs and base before attempting again.

A type of triangle known as an isosceles triangle has two sides of equal length. As a result, two angles on opposite sides of equal sides are also equal. It's possible that the third angle, which is located opposite the base of the triangle, differs from the other two angles.

The relative positions of the equal sides and angles determine the types of isosceles triangles. For instance:

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Answer:

trust the process

Explanation:

quadratic formula, use synthetic division also use the p-q method for the roots and factoring.

Answer:

You need the attachment, sorry I can't answer :(

Answer:

It is short thats what the awnser is

The critical speed below which the rope would become slack when the bucket reaches the highest point in the circle is determined by the length of the rope and the radius of the circle.

When the bucket is at the highest point in the circle, it is momentarily at rest and the tension in the rope must be zero.

The formula for calculating the critical speed at which the rope becomes slack is:

v = √(gr)

where v is the critical speed, g is the acceleration due to gravity, and r is the radius of the circle.

For example, if the radius of the circle is 2 meters and the acceleration due to gravity is 9.8 m/s², the critical speed would be:

v = √(9.8 × 2) = 4.4 m/s

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Answer:

650N

Explanation:

f = ma

130kg x 5 m/s^2 = 650N

Answer:  \(\bold{\text{Slope (m)}=\dfrac{1}{4}}\)

Explanation:

A linear equation is of the form: y = mx + b   where

x + 4y = 16

     4y = -x + 16

       \(y = -\dfrac{1}{4}x+\dfrac{16}{4}\)

       \(y=-\dfrac{1}{4}x+4\)

The y-intercept (b) = 4

Next, find the slope given point (4, 5) and b = 4

\(y=mx+b\\\\5=m(4)+4\\\\1=4m\\\\\dfrac{1}{4}=m\\\\\\\\\large\boxed{Slope (m)=\dfrac{1}{4}}\)

Answer:6/1 %50 x11

Explanation:

25-45

The equation relating voltage, current and resistance is V = IR, this is because voltage in a circuit increases with increase in current and resistance and vice versa.

Ohm's law states that the current flowing in a conductor is directly proportional to the voltage across the conductor.

Mathematically, the formula for Ohm's law is given as;

V = IR

where;

The given data

Voltage ( V )       Current ( I )      Resistance ( R)

4                               2                          2

12                              8                          4

6                               3                           3

From the equation given above, the voltage in the circuit increases with increase in the current and resistance and decreases with decrease in the current and resistance.

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Where's the diagaram?

Answer:

A. 7cm

I hope it helps...

Answer:

false

Explanation:

When the circuit is first completed, the voltage drop across the capacitor is 0 V. Just after the circuit is completed, the capacitor will act as an open circuit since it is initially uncharged. Therefore, all the voltage will drop across the resistor.

1. Initially, the capacitor is uncharged, which means it has no charge stored in it.
2. When the circuit is completed, the current starts flowing from the emf source through the resistor and towards the capacitor.
3. However, just after the circuit is completed, no time has passed for the capacitor to charge. Therefore, the voltage across the capacitor is still 0 V.
4. As time progresses, the capacitor will start charging and the voltage across it will increase, but just after the circuit is completed, the voltage drop across the capacitor remains 0 V.
Using Ohm's Law, we can find the voltage drop across the resistor: V = IR where I is the current flowing through the circuit.
Using the total resistance of the circuit: R_total = R + R_capacitor
we can find the current: I = ε / R_total
Plugging in the given values:
R_total = 7.40 kΩ + 0.00 kΩ = 7.40 kΩ
I = 100 V / 7.40 kΩ = 0.0135 A
Now we can find the voltage drop across the resistor:
V = IR = 0.0135 A * 7.40 kΩ = 99.9 V
Therefore, the voltage drop across the capacitor is 0 V.

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Given the fact that the arrow is in motion, it the follows that the arrow possesses kinetic energy.

The kinetic energy is the energy that is possessed by a body by virtue of its motion. This is different form the potential energy of the body which is the energy that the body possesses as a result of the fact that the object is located at a particular position. These are actually the two kinds of mechanical energy that we have in the study of physics.

If we consider this matter closely, we would see that the arrow as shown is in motion. The arrow does posses a velocity and such the arrow is in motion. As long as we can see that the arrow is in motion, it the follows that the arrow as we can see does and in fact possesses the kinetic energy.

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If the Southern Cross is used to determine that the south celestial pole appears 40 degrees above the horizon, then the observer must be located at 50 degrees south latitude.

The Southern Cross is a well-known constellation visible in the southern hemisphere. It consists of five stars arranged in the form of a cross, with two points pointing toward the pole. The South Celestial Pole, like the North Celestial Pole, is located directly above the Earth's poles. When viewed from the Earth's southern hemisphere, the South Celestial Pole is the point in the sky around which all the stars appear to revolve. It is necessary to determine the altitude of the South Celestial Pole using the Southern Cross constellation to determine the observer's latitude in the southern hemisphere.

Find the Southern Cross constellation. Determine the point where the long axis of the cross intersects with an imaginary line connecting the two stars that make up the cross's short axis. Follow this imaginary line downward until it meets the horizon. The altitude of this point, as measured from the horizon, is equal to the latitude of the observer. In this case, if the observer determines that the South Celestial Pole is 40 degrees above the horizon, the observer's latitude must be 50 degrees south latitude.

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Answer:

the type of tomato plants used.

Explanation:

The lowest frequency of the standing waves is 8.37 Hz.

The lowest frequency of standing waves on a wire depends on the length of the wire and wave velocity. The speed of the waves can be calculated by using this formula

v = √( F . L / m )

where v is the speed of the waves, F is wire tension, L is the length of the wire and m is the mass of the wire.

The harmonic frequency of waves should follow

f = (n + 1) v / 2L

where f is the harmonic frequency, n is the order number

From the question above, the given parameters are

L = 10.5 m

m = 90 g = 0.09 kg

F = 265 N

n = 0

Find the speed of waves

v = √( F . L / m )

v = √( 265 . 10.5 / 0.09 )

v = 175.83 m/s

Find the lowest frequency

f = (n + 1) v / 2L

f = (0 + 1) 175.83 / 2 . 10.5

f = 8.37 Hz

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3.) the total momentum change per unit of time, and the total momentum change are both important in determining the amount of damage an object sustains in a collision.

The amount of damage an object receives in a collision depends on both the overall momentum change and the momentum change per unit of time. The mass and velocity of the objects colliding determine the total momentum change, which is a measure of the force of impact. The impulse, also known as the change in momentum per unit of time, is equally significant. This gauges how long an impact lasts and how the force is applied throughout that time. Impacts that last longer and exert less force can cause less harm than impacts that last less time and exert more force. The specific factors that contribute to damage will depend on the details of the collision, such as the speed, mass, and shape of the objects involved.

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Answer:

has f uped hands

Explanation:

The wide wood pores that link to the tree's roots allow sap to be drawn up into the maple tree when it starts to freeze. The tree is really replenishing itself with fluids at this time from its roots.

As long as the temperature is below freezing and the sap is increasing, the process continues.

Water is drawn up from the roots to the top of the plant according to the cohesion-tension hypothesis of sap ascent. Water and minerals travel upward from the roots through the xylem due to a negative water potential gradient created by the evaporation of mesophyll cells in the leaves.

The water potential gets increasingly negative as you climb the tree, and these variations provide a pull or tension that causes the water to ascend the tree. The loss of water from the leaves through a process called transpiration is a crucial element in the draw of water up the tree.

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Given:

The area of the loop is A = 0.339 m^2

The current in the loop is I = 0.145 A

The strength of the magnetic field is B = 0.83 T

The number of turns in the loop is n = 1

The angle is

To find the torque on the loop.

Explanation:

The torque can be calculated by the formula

On substituting the values, the torque will be

Thus, the magnitude of the torque on the loop is 0.0258 N m