Which compound contains ionic bonds?

A.
C2H6

B.
PCl5

C.
Ca3N2

D.
SF2

When doing somersaults, you'll more easily rotate when your body is (c) curled into a ball shape. This is because of the conservation of angular momentum. Angular momentum depends on two factors: the moment of inertia and the angular velocity.

By curling your body into a ball shape, you decrease the moment of inertia, which is a measure of how spread out the mass is in an object. When the moment of inertia is reduced, the angular momentum remains constant.

By decreasing the moment of inertia, you effectively concentrate the mass closer to the axis of rotation, making it easier to rotate. In contrast, when your body is straight with both arms above your head or at your sides, the moment of inertia is larger, requiring more effort to initiate and maintain the rotation. Curling into a ball shape reduces the moment of inertia, facilitating faster and easier rotation during somersaults.

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Given

A cardboard box sits on top of an asphalt driveway.

The coefficient of static friction is

and the coefficient of friction is

. The mass of the box is m=6kg and a horizontal force of F=8N is applied.

To find

The gravitational force

The frictional force

The acceleration

Explanation

The gravitational force is

The static frictional force is

Since the static frictional force is greater than the applied force so the body doesnot move. So the acceleration is zero.

However , frictional force is equal to applied force till the frictional force reaches its maximum value.

Thus the frictional force is 9N.

Conclusion

The gravitational force is 58.8 N.

The acceleration is zero.

The frictional force is 9 N.

Answer:

0.441

Explanation:

life is great :))

Answer:

read this it might help some

When a moving object collides with a stationary object of identical mass, the stationary object encounters the greater collision force. When a moving object collides with a stationary object of identical mass, the stationary object encounters the greater momentum change.

Explanation:

From conservation of energy, the spring constant is of magnitude 367 N/m.

Hooke's law state that the extension in an elastic material is directly proportional to the force applied provided that the elastic limit is not exceeded.

Given that a mass resting on a horizontal, frictionless surface is attached to one end of a spring; the other end is fixed to a wall. it takes 3.1 j of work to compress the spring by 0.13 m . if the spring is compressed, and the mass is released from rest, it experiences a maximum acceleration of 12 m/s².

The given parameters are;

The elastic potential energy = work done = 3.1

1/2ke² = 3.1  

1/2 × k × 0.13² = 3.1

0.5k × 0.0169 = 3.1

0.00845k = 3.1

k = 3.1/0.00845

k = 366.86 N/m

k = 367 N/m

Therefore, the value of the spring constant is 367 N/m approximately.

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The correct option would be D. 00.

A tip size of 00 is recommended to cut the 1/4 in. metal in this project. The smaller the tip size, the finer the cutting capability.

Since 1/4 in. is a relatively thin metal, a smaller tip size such as 00 would provide more precision and control during the cutting process.

It would allow for cleaner cuts and reduce the chance of excessive heat or distortion in the metal.

Using a larger tip size may result in less accuracy and could potentially cause damage to the material.

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Answer:

Furthermore, the Pythagorean theorem works when the two added vectors are at right angles to one another - such as for adding a north vector and an east vector.

Answer:

Temperature is a physical quantity that expresses hot and cold. It is the manifestation of thermal energy, present in all matter, which is the source of the occurrence of heat, a flow of energy, when a body is in contact with another that is colder or hotter.

Explanation:

Answer:

Temperature is a physical quantity that expresses hot and cold.

Explanation:

The highest entropy for the jar of marbles is represented by the marbles are arranged in a random order.

Entropy is the measure of the degree of disorderliness of a system or degree of randomness of a system.

Entropy of a system increases with increase in randomness of the system or disorderliness of the system.

Thus, the highest entropy for the jar of marbles is represented by the marbles are arranged in a random order.

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Answer: 50.2 m/s towars northeast, also travels at 5.71 degrees.

Explanation:

(50.0 m/s)^2 +(5.0 m/s)^2 =c^2

c= \(\sqrt[n]{2500 m^2/s^2 +25.0 m^2/s^2}\)

Answer:

the filling stops when the pressure of the pump equals the pressure of the interior air plus the pressure of the walls.

Explanation:

This exercise asks to describe the inflation situation of a spherical fultball.

Initially the balloon is deflated, therefore the internal pressure is equal to the pressure of the air outside, atmospheric pressure, when it begins to inflate the balloon with a pump this creates a pressure in the inlet valve and as it is greater than the pressure inside, the air enters it, this is repeated in each filling cycle, manual pump.

When the ball is full we have two forces, the one created by the external walls and the one aired by the pressure of the pump, these forces are directed towards the inside, but the air molecules exert a pressure towards the outside, which translates into a force. When these two forces are equal, the pump is no longer able to continue introducing air into the balloon.

Consequently the filling stops when the pressure of the pump equals the pressure of the interior air plus the pressure of the walls.

Measurement tools improve the quality and quantity of our lives by making them easier and safer. The ability to precisely quantify physical qualities has arguably enormous survival value, providing humans with an adaptive, evolutionary advantage refined over thousands of years of natural selection.

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(a) The impedance of the LC circuit at 60.0 Hz is 4.03×10³ Ω.

(b) The impedance of the LC circuit at 10.0 kHz is 1.02×10³ Ω.

The impedance (Z) of an LC circuit can be calculated using the formula Z = √(R² + (XL - XC)²), where R is the resistance, XL is the inductive reactance, and XC is the capacitive reactance. In an ideal LC circuit, the resistance is zero, so the impedance is simply given by Z = √((XL - XC)²).

The inductive reactance can be calculated as XL = ωL, where ω is the angular frequency and L is the inductance. The capacitive reactance can be calculated as XC = 1/(ωC), where C is the capacitance.

For part (a), substituting the given values into the formula gives

For part (b), substituting the given values and using ω = 2πf gives

XL - XC = 2.53×10⁴ Ω, so

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(a) The impedance of the LC circuit at 60.0 Hz is 4.03×10³ Ω.

(b) The impedance of the LC circuit at 10.0 kHz is 1.02×10³ Ω.

What is Circuit?

A circuit is a closed path or loop through which electric current can flow. It is composed of various components such as resistors, capacitors, inductors, and power sources such as batteries or generators, connected together by conductive wires or traces on a printed circuit board (PCB).

The impedance of an LC circuit can be calculated using the formula:

The impedance (Z) of an LC circuit can be calculated using the formula Z = √(R² + (XL - XC)²), where R is the resistance, XL is the inductive reactance, and XC is the capacitive reactance. In an ideal LC circuit, the resistance is zero, so the impedance is simply given by Z = √((XL - XC)²).

The inductive reactance can be calculated as XL = ωL, where ω is the angular frequency and L is the inductance. The capacitive reactance can be calculated as XC = 1/(ωC), where C is the capacitance.

For part (a), substituting the given values into the formula gives

XL - XC = 3010 Ω, so

Z = √((3010)²)

= 4.03×10³ Ω.

For part (b), substituting the given values and using ω = 2πf gives

XL - XC = 2.53×10⁴ Ω, so

Z = √((2.53×10⁴)²)

= 1.02×10³ Ω.

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Both adolescent pullers exert a 55 N force at an angular angle of 35 to the motion's forward direction.

The object floats if the buoyant force is equal to or greater than its weight. This is referred to as the Archimedes Principle in physics. A boat must have enough of its surface in contact with the water to produce the necessary force of buoyancy in order for it to float.

You will impart momentum into the water that is equal to and the opposite of the momentum the boat will gain (momentum = mass x velocity).

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Since we are dividing 0 by a non-zero number, the value of the magnetic field, B, should be 0 T.

This means that no magnetic field is required to maintain the electrons' movement to the right at the given speed.

To determine the value of the magnetic field that would make a beam of electrons traveling to the right at a speed of 4.8, we can use the Lorentz force equation:
F = q * (E + v × B)
Here, F is the Lorentz force, q is the charge of the electron, E is the electric field, v is the velocity of the electron, and B is the magnetic field.
Since we want the magnetic field to make the electrons travel to the right, the magnetic field should be perpendicular to the velocity of the electrons.

This means the Lorentz force will be solely due to the magnetic field (i.e., E = 0).
So, the equation becomes:
F = q * (v × B)
Since we want the electrons to continue moving to the right, the force due to the magnetic field should be balanced by an equal and opposite force.

Therefore, the net force F on the electron should be 0:
0 = q * (v × B)
We need to determine the value of B that satisfies this condition.

To do this, we can rearrange the equation:
B = 0 / (q * v)
The charge of an electron, q, is approximately\(-1.6 * 10^-19 C\),.

and the given velocity, v, is 4.8 m/s.

Plugging these values into the equation:
B = \(0 / (-1.6 * 10^-19 C * 4.8 m/s).\)

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Answer: 0.99m left

Explanation:

The formula:

Distance / Time = Rate

Fill in the formula

Distance / 0.55s = 1.8 m/s

Multiply both sides by 0.55s

Distance = 0.99m

Displacement = 0.99m to the left.

Answer:

-0.99 (See attached)

Explanation:

(See attached)

The Copernican Principle refers to the idea that there is nothing special about our place in the universe, and that everything in the universe revolves around the Sun, challenging the geocentric model.

The Copernican Principle is a foundational concept in astronomy and cosmology. It challenges the geocentric view by asserting that there is nothing special about our place in the universe. It proposes that everything in the universe, including celestial bodies and systems, revolves around the Sun. This heliocentric model, pioneered by Nicolaus Copernicus, marked a significant shift in our understanding of the cosmos. It introduced the idea that the Earth is not the center of the universe but rather a planet in orbit around the Sun. The Copernican Principle has since shaped our perception of the vastness and diversity of the cosmos, challenging previous geocentric beliefs.

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Pressure (P) = F/A

diameter = d = 1.80 cm = 0.018 m

F = force = 16.5 N

Volume pump = 5 L = 5000 cm^3 = 0.005 m^3

Area = pi* r^2 = pi* (0.018/2)^2 = 2.54 x10^-4 m^2

P = 16.5 / 2.54 x10^-4 = 64,840.9 N/m^2

Power = w *d / time = 64,840.9 N/m^2 * 0.005 m^3 / 60 s = 5.4 Watt

Answer:

It's Newton's third law. For every known reaction, there is a equal and opposite reaction.

Explanation:

The mallet which hits the ball with an action force, the ball exerts a reaction force on the mallet as explained by the Newton's third law. Thus, the correct option is 3.

Newton's third law states that for every action (force) in nature there is an equal and opposite force or reaction. An example of third law of motion is that the mallet hits the ball with an action force, then the ball exerts a reaction.

If an object A exerts a force on the object B, then object B must also exert a force of equal magnitude and in the opposite direction back on object A. The law represents a certain symmetry in the nature that the forces always occur in pairs, and one body cannot exert a force on another without experiencing any kind of force itself.

Therefore, the correct option is 3.

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Explanation:

What is the weight of a 2.00-kilogram object on the surface of Earth?

2.00 N

4.91 N

9.81 N

19.6 N

Given parameters:

Mass of the object = 2kg

Unknown:

Weight of the object  = ?

Solution:

The weight of an object is the force of gravity acting on the object;

 Weight  =  mass x acceleration due to gravity

Acceleration due to gravity  = 9.8m/s²

 Now insert the parameters and solve;

    Weight  = 2 x 9.8 = 19.6N

A person weighing 785 Newtons on the surface of the Earth would weigh 47 Newtons on the surface of Pluto. What is the magnitude of the gravitational acceleration on the surface of Pluto?

1.7 m/s²

0.59 m/s²

0.29 m/s²

9.8 m/s²

Given parameters:

Weight on Earth  = 785N

Weight on Pluto = 47N

Unknown:

Acceleration due to gravity on Pluto = ?

Solution

The mass of the body both on Earth and Pluto is the same.

  Weight = mass x acceleration due to gravity

Now find the mass on Earth;

  Acceleration due to gravity on Earth  = 9.8m/s²

    785   = mass x 9.8

         mass  = \(\frac{785}{9.8}\)   = 80.1kg

So;

  Acceleration due to gravity on Pluto = \(\frac{Weight on Pluto}{mass }\)  

  Acceleration due to gravity  = \(\frac{47}{80.1}\)   = 0.59m/s²

A) The triathlete's bike is 50.0 m from the shore on the land   B) the component of her distance from the bicycle along the shore is 70.0 m.

In a triathlon, a triathlete starts with swimming, then biking, and ends with running. Here, we have been given that a triathlete on the swimming leg of a triathlon is 120.0 m from the shore (a). The triathlete's bike is 50.0 m from the shore on land (b).

We need to find the component of her distance from the bicycle along the shore. Component of her distance from the bicycle along the shore In the above set, we can see that the triathlete is swimming in a straight line towards the shore, while the bike is on the land. We need to find the component of her distance from the bicycle along the shore. T

his component is represented by the horizontal distance (d) between the point where the swimmer hits the shore and the bike (50.0 m from the shore).Therefore, the component of her distance from the bicycle along the shore is d = 120.0 m - 50.0 m = 70.0 m. Therefore, the component of her distance from the bicycle along the shore is 70.0 m.

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9968.4 Joule is the correct answer .

What is speed ?

In physics, "speed" typically refers to the rate at which an object moves or travels through space is measured  in units of distance per unit of time, such as meters per second (m/s) or miles per hour (mph). The speed of an object can be calculated by dividing the distance traveled by the time it took to travel that distance. In addition to speed, physics also considers other concepts related to the motion of objects, such as velocity (which includes the direction of motion), acceleration (the rate of change of velocity), and momentum (the product of an object's mass and velocity.

Weight = w = 14700N

s = 20m

F = 5000N

Friction force = f = 3500N

THETA = 36.9

s = 20m

Work done by Horizontal force = 3998.4*20 = 79968.4 Joule

Work done by frictional force = -3500 *20 =- 70000Joule

Work done by vertical force = 0

Total work done = 79968.4-70000 = 9968.4 Joule

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Answer:

Explanation:

A is not correct. That means that D is since they offer exactly the opposite meanings.  

C is rubbish. One pole could not be stronger than the other. Heaven help us if touched the stronger pole.

B the very point of a magnet is that it does matter how the atoms are orientated.

The melting point of a substance is the temperature at which the substance changes its phase from solid to liquid.

The freezing point is the temperature at which the substance changes its phase from liquid to solid.

The melting point of a substance is the same as the freezing point. That is when the temperature of the substance in the liquid form is increased continuously, the temperature at which the substance turns into a solid is equal to the temperature at which the substance will turn into liquid from solid if the temperature is decreased continuously, from a higher temperature.

A regular polygon's interior angles add up to 3060° of a 19 sided polygons.

Polygons are defined as a flat shape surrounded by sides, or line segments.

It can be defined as a plane figure whose description is given by a closed polygonal chain made up of a finite number of straight line segments.

It can also be defined as any closed curve made up of a number of connected line segments that do not cross one another.

Sum of interior angle = (p - 2) x 180°

Where p = 19

Sum of interior angle = (19 - 2) x 180°

                                   = 17 x 180°

                                   = 3060°

Thus, a regular polygon's interior angles add up to 3060° of a 19 sided polygons.  

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Answer:

Option (c) - Kg, m, s

Explanation:

The internationally agreed system of units for physical quantities is based on the fact that kg(kilogram) is the unit of mass, m(meter) is the unit of length and (second) is the unit of Time.

The third equation of motion is used here to determine the minimum braking distance for the car. The minimum distance is 31.49 m.

The rate of change of position of an object in any direction is defined as the speed. It is a scalar quantity which has only direction and no magnitude. The equation used to calculate the speed is:

speed = Distance / Time

speed = 14 / 0.80 = 17.5 m/s

From third equation of motion,

v² = u² + 2as

s = v²  -  u² / 2a

= 0² - 20² / 2 × -6.35

s = 31.49 m

Thus the minimum braking distance is 31.49 m.

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