a (b 25.0) g mass is hung on a spring. as a result, the spring stretches (8.50 a)cm. if the object is then pulled an additional 3.0cm downward and released, what is the period of the resulting oscillation? give your answer in seconds with 3 significant figures.

Answer:

Explanation:

It would actually be A. 30 , as each hour of ascension (i am not sure about the correct terminology) equals 15 .

Answer:

30

Explanation:

Answer:

Hope this will help you.

Answer: velocity is the study of how fast an object changes its place, or is displaced.

Explanation: An example would be how fast a basketball reaches the other side of a gym, the acceleration and speed are measured and calculated to find velocity

Answer:

Part 1

The vector can be expressed as follows;

r = 12, θ = 72°, ·v = (12, ∠72°), ·v ≈ 3.71·\(\mathbf{\hat i}\) + 11.41·\(\mathbf{\hat j}\) or

\(\mathbf{\cdot v}=\begin{bmatrix}3.71\\ 11.41\end{bmatrix} = \begin{pmatrix}3.71\\ 11.41 \end{pmatrix}\)

Part 2

The angle of the vector is 56.31°

Explanation:

Part 1

The given parameters are;

The direction of the vector = 72°

The vector magnitude = 12

Therefore, the vector can be described in the following forms;

Polar form

1) Direct notation;

r = 12, θ = 72°

2) Ordered set

·v = (12, ∠72°)

Rectangular vector notation;

1) Unit vector notation

·v = vₓ\(\mathbf{\hat i}\) + \(v_y\)\(\mathbf{\hat j}\)

Where;

vₓ = 12 × cos(72) ≈ 3.71

\(v_y\) = 12 × sin(72) ≈ 11.41

Therefore;

·v ≈ 3.71·\(\mathbf{\hat i}\) + 11.41·\(\mathbf{\hat j}\)

2) Matrix notation

\(\mathbf{\cdot v}=\begin{bmatrix}3.71\\ 11.41\end{bmatrix} = \begin{pmatrix}3.71\\ 11.41 \end{pmatrix}\)

Part 2

The given vector is V = 2·x + 3·y

Therefore, the angle of the vector, θ = tan⁻¹(y/x) =  tan⁻¹(3/2) ≈ 56.31°

The angle of the vector = 56.31°.

The equation for a cross section of the satellite dish is y² = 4px.

In a parabolic satellite dish, the receiver is placed at the focus of the parabola. The parabola is a symmetrical curve with the property that all incoming parallel rays of light (or radio waves in the case of a satellite dish) reflect off the surface and converge at the focus.

The standard equation for a parabola in Cartesian coordinates is y² = 4px, where (x, y) are the coordinates of any point on the parabola, p is the distance from the vertex (the point where the parabola intersects the axis of symmetry) to the focus, and y² = 4px represents the relationship between the x and y coordinates.

In the context of a satellite dish, the vertex of the parabola is typically located at the origin (0, 0), and the receiver is placed at the focus. Therefore, the equation for a cross section of the satellite dish can be written as y² = 4px, where p represents the distance from the focus to the vertex.

This equation describes the shape of the parabolic reflector of the satellite dish, ensuring that incoming signals parallel to the axis of symmetry are reflected towards the focus where the receiver is positioned.

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The direction of the break dancer is always changing hence we can say that the break dancer is accelerating.

The term acceleration means change of velocity with time. It refers to the time taken for the velocity of a body to change in a specified direction. Recall that velocity takes direction into account.

The direction of the break dancer is always changing hence we can say that the break dancer is accelerating since his direction is changing even though the speed is constant.

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Answer:

C. A Covalent Bond

Explanation:

two covalent bond form between the two oxygen atoms because oxygen requires two shared electrons to fill its outermost shell

i need help with this too:( if u found out the answer lmk

The action that best describes the camera motion in the scenes directly prior to the Old Man's Defiant hand gesture is: "Zooming in and out" (Option C)

Some interesting camera motions are:

Note that the different camera motions described above are important because they allow filmmakers to convey mood and emotion, create visual interest, and guide the audience's attention within a scene.

For example, a static shot can create a sense of calm or stability, while a handheld shot can create a sense of intimacy or instability. A panning shot can follow the action and keep the audience engaged, while a zoom shot can draw attention to a specific part of the scene.

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Full Question:

What best describes the camera motion in the scenes directly prior to the old man's defiant hand gesture?

O Static and secured on a tripod

O Moving chaotically

O Zooming in and out

O Filming at 96 frames a second

Answer:

700 Joules

Explanation:

The work done equals force times distance. Just multiply your two values there.

Side note: It would be more impressive if he'd done it in 1 second rather than 5. You know why? Because POWER=WORK/TIME. The less time it takes him to lift the weight with the same force and distance, the more powerful he is!

The coefficient of static friction between the mass and the plane is 0.52.

Then coefficient of static friction is the value that must be overcomed when two surfaces are in contact. This value depends on the nature of the surfaces in contact.

In the given question, since the two surfaces are rough, frictional force will act in opposite direction of the motion.

Given that;

F = μR

where F is the force applied to the mass and R is its reaction.

F = 250 N

R = mgCos θ

  = 50 x 10 Cos 15

  = 483 N

So that;

μ = F/R

  = 250/483

μ = 0.52

The coefficient of static friction between the mass and the plane is 0.52.

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Answer:

Answer: mechanical advantage is always less than velocity ratio due to friction. So the efficiency of a machine is always less than 100%.

When a scientist works with a highly polar stationary phase and a highly polar mobile phase, they can expect strong interactions between the two phases, resulting in slow or no movement of the components being separated.

In chromatography, the separation of components relies on the differential affinities of the components for the stationary and mobile phases. The stationary phase is typically a solid or a liquid attached to a solid support, while the mobile phase is a liquid or a gas that carries the components through the system.

When both the stationary and mobile phases are highly polar, they exhibit strong intermolecular forces such as hydrogen bonding or dipole-dipole interactions.

These strong interactions between the polar phases can lead to a situation where the components being separated have a high affinity for both phases. As a result, the components may have slow or limited movement between the stationary and mobile phases.

The reduced movement of components can lead to poor separation or overlapping peaks in the chromatogram, making it challenging to distinguish and quantify individual components.

In such cases, it may be necessary to modify the stationary or mobile phase properties, such as using less polar phases, adjusting pH, or altering solvent composition, to achieve better separation and resolution of the components of interest.

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Answer:

I=0.3 A

R=25 Ohm

V=?

V=IR

0.3X25=7.5

Answer:

7.5 V

Explanation:

current × resistance = voltage

Answer:

The surface closest to the balloon becomes positively charged, while the far side of the can becomes negatively charged. This results in an attractive force that draws the can to the balloon.

Explanation:

Answer:

The balloon is negatively charged.

Explanation:

hope it helps

The Mach number for the plane is approximately 3.51.

To find the speed of the plane, we can use the equation:

Speed of sound = Speed of the plane / Time taken

Given: Speed of sound (v) = 344 m/s

Time taken (t) = 3.51 seconds

Let's calculate the speed of the plane:

Speed of plane = Speed of sound × Time taken

Speed of plane =\(344 m/s * 3.51 s\)

Speed of plane ≈ 1206.44 m/s

Rounded to 2 decimal places, the speed of the plane is approximately 1206.44 m/s.

To find the Mach number of the plane, we need to divide the speed of the plane by the speed of sound:

Mach number = Speed of plane / Speed of sound

Mach number ≈ \(1206.44 m/s / 344 m/s\)

Mach number ≈ 3.51

Rounded to 2 decimal places, the Mach number for the plane is approximately 3.51.

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The value of the change in potential energy, ΔU=Uf−Ui, of the alpha particle -1.104 x 10⁻²² Joules.

Given:

Charge on the alpha particle, q_alpha = 3.20 x 10⁻¹⁹ C

Mass of alpha particle, m_alpha = 6.68 x 10⁻²⁷ kg

Potential difference, V = -3.45 x 10⁻³ V

The change in potential energy of the alpha particle is;

Formula used:

The change in potential energy, ΔU = qV,

where q is the charge and V is the potential difference.

ΔU = q_alpha × V = 3.20 x 10⁻¹⁹ C × (-3.45 x 10⁻³ V)

= -1.104 x 10⁻²² Joules.

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The federal income tax withholding for each biweekly paycheck for the single teacher is $259.9.

The given parameters:

Biweekly amount earned by the single teacher, = $1,500

The federal tax rate for single workers is given as;

amount between $436 and $1,506 = $34.9 plus 15%

The federal income tax withholding for each biweekly paycheck for the single teacher is calculated as follows;

income tax withholding = $34.9  +  0.15($1,500)

income tax withholding = $34.9  +  $225

income tax withholding  = $259.9

Thus, the federal income tax withholding for each biweekly paycheck for the single teacher is $259.9.

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Answer:

Hawaii is my best guess! I'm not 100% sure tho, but I'm pretty sure its Hawaii (And i think i spelled it wrong lol) :) Hope this helps!

Explanation:

Underwater is the answer to the question

so hawii ima guess. i looks

The rock formations that are visible when the landscape is exposed to energy from the sun are sedimentary rocks.

A landscape is a geomorphological unit that is categorized based on characteristics such as elevation, slope, orientation, stratification, rock exposure, and soil type.

Sedimentary rock or also known as sedimentary rock is a rock that forms on the surface of the earth under conditions of low temperature and pressure. These rocks originate from rocks that were formed earlier, which experience weathering, and erosion, and then weathering is transported by water, air, or ice, which are then deposited and accumulate in depositional basins, forming sediments. These sedimentary materials then compact, harden, undergo lithification, and form sedimentary rocks.

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A decrease in the resistance caused by friction would reduce the amount of force required to move the object.

With less friction, there is less opposition to the motion, allowing for easier and smoother movement of the table across the floor.

This means that you would need to exert less force to achieve the desired displacement of 5 feet.

The decrease in friction enables the object to slide more easily, requiring less effort to overcome the resistance and accomplish the task.

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Option C: The thin rod with the axis through the center will rotate faster, if the same torque is applied to each.

A force that can cause an object to rotate around an axis and generate a twisting movement is measured. It is a vector quantity with SI units equivalent to Nm. It can generally be expressed as:

τ = rFsinθ

The force F must be applied at a location r distant from the pivot point in order to generate a torque. The following factors affect the torque's size:

F: the applied force; larger forces provide more torque.

Radius r: The torque rises as the radius does.

Angle between the force and the lever arm: Increasing the torque by applying a force perpendicular to the lever arm.

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Given the following two objects, if the same torque is applied to each, which will rotate faster?

A. The thin rod with the axis through the end will rotate faster.

B. It is impossible to tell from the given information.

C. The thin rod with the axis through the center will rotate faster.

D. They will have the same angular velocity.

Answer:

False. Not everything can turn into a black hole. The formation of a black hole requires a massive object, typically a star, to collapse under its own gravity. This collapse causes the object to become so dense that it creates a singularity, a point of infinite density at the center of the black hole, which is surrounded by an event horizon, the point of no return beyond which nothing, not even light, can escape. So, only objects with sufficient mass and gravity can become black holes.

Explanation:

The force of gravity between two magnets is really considerably smaller than the magnetic force, despite the fact that two magnets correctly aligned would attract and stay together firmly.

Any two mass-containing things in the cosmos are subject to the basic natural force of gravity. According to the formula F = G * m1 * m2 / r2, where F is the force, G is the gravitational constant, m1 and m2 are the masses of the two objects, and r is the distance between them, the gravitational force between two objects varies in strength depending on their masses and the distance between them. The magnetic fields of two magnets are what create the force between them. Two magnets are aligned properly and it causes them to stick together tightly.

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Answer:

Car A has twice the energy of car B.

Explanation:

The kinetic energy of an object is given by :

\(K=\dfrac{1}{2}mv^2\)

Where

m is the mass

v is the speed of the object

Car A has twice the mass of Car B. Both travel at the same speed i.e.

\(m_A=2m_B\)

So,

\(\dfrac{K_A}{K_B}=\dfrac{(1/2)m_Av^2}{(1/2)m_Bv^2}\\\\=\dfrac{2m_B}{m_B}\\\\\dfrac{K_A}{K_B}=2\\\\K_A=2\times K_B\)

So, the kinetic energy of car A is twice of the kinetic energy of car B.

Answer:

Car A has twice the energy

Explanation:

"You buy a lava lamp from the store. as the lamp heats up, blobs of liquid rise to the top then sink back down to the bottom. this process continues." The process  described in a lava lamp occurs because of differences in density, buoyancy, and convection.

As the lamp heats up, the blobs of liquid (usually wax) inside become less dense and rise to the top due to buoyancy. Once they reach the top and cool down, their density increases, causing them to sink back down. This cycle of rising and sinking continues as convection currents are formed in the liquid, creating the mesmerizing movement you see in a lava lamp.

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The spring-like property that returns a muscle to its original length after a contraction ends is known as muscle elasticity. When a muscle contracts, it generates force and shortens in length. This contraction is achieved by the sliding of actin and myosin filaments within the muscle fibers.

However, once the contraction is over and the force is no longer applied, the muscle has the remarkable ability to return to its original length.

Muscle elasticity is attributed to two main factors: the structural arrangement of proteins within the muscle fibers and the connective tissue surrounding the muscle.

The proteins act as molecular springs that can be stretched and then recoil back to their original position when the force is released. This property allows the muscle to efficiently generate and transmit forces during movement.

Additionally, the connective tissue, such as tendons and fascia, surrounding the muscle acts as a supportive framework. It stores and releases energy during muscle contractions, assisting in the recoil and restoration of the muscle's original length.

Overall, muscle elasticity is essential for the proper functioning of our musculoskeletal system, allowing us to move efficiently and smoothly while maintaining the integrity of our muscles.

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