Particles q₁ = -29.6 μC, q2 = +37.7 μC, and
93-10.8 μC are in a line. Particles q₁ and q2 are
separated by 0.630 m and particles q2 and q3 are
separated by 0.315 m. What is the net force on
particle q₁?
Remember: Negative forces (-F) will point Left
Positive forces (+F) will point Right
-29.6 AC
91
0.630 m
+37.7 μC
+92
0.315 m
-10.8 μC
93

Answer:

Explanation:

According to Newton's Law of Gravitation, the gravitational force between two objects is always mutual, meaning that the force that one object exerts on the other is equal in magnitude but opposite in direction.

This means that if planet A exerts a gravitational force on planet B, then planet B will also exert a gravitational force on planet A. The magnitude of this force will be equal to the magnitude of the force that planet A exerts on planet B, but the direction will be opposite.

For example, if planet A exerts a gravitational force on planet B that is pulling planet B towards planet A, then planet B will also exert a gravitational force on planet A that is pulling planet A towards planet B. The magnitude of these two forces will be equal, but the directions will be opposite.

hat he sais

Answer:w

Explanation:

According to the Keynesian view, manipulating foreign sector spending is not a reliable way to move the U.S. economy toward a more acceptable equilibrium because it does not address the fundamental causes of economic instability.

Keynesian economics focuses on the role of domestic demand in driving economic growth and stability. The government can use fiscal and monetary policy to stimulate aggregate demand and promote full employment. However, changes in foreign sector spending can be unpredictable and beyond the control of domestic policymakers. For instance, an increase in foreign demand for U.S. exports could boost economic growth and employment in the short run, but it may not be sustainable if the foreign demand later decreases. Similarly, a decrease in foreign demand for U.S. exports could have negative short-term effects on the economy, but it may not necessarily lead to a long-term decline. In short, Keynesian economics emphasizes the importance of domestic demand management and stabilizing the economy through government intervention. While changes in foreign sector spending can have some impact on the economy, they are generally seen as unreliable and unpredictable, and therefore not a reliable tool for achieving economic stability in the long run.

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Explanation:

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Answer: The scenario violates the second law of thermodynamics.

Explanation: The second law states that heat cannot be converted into work without some loss of usable energy, and that the amount of usable energy in a closed system will always decrease over time. Therefore, the machine described in the scenario cannot exist because it would violate the second law by converting all of the heat into electricity without any loss of usable energy.

a) , it would take approximately 0.4638 seconds for the magnetic energy to decay to 13% of its maximum value.. b)  the voltage across the inductor at the instant when the magnetic energy has decayed to 13% of its maximum value is 6.4 times the initial current in the circuit.

An RL circuit consists of a resistor (R) and an inductor (L) connected in series. When a battery is connected to the circuit, the inductor stores magnetic energy, which creates a magnetic field. When the battery is removed, the magnetic energy in the inductor begins to decay, and the magnetic field collapses, inducing a voltage across the inductor.

a) The time constant (τ) of an RL circuit is given by the formula:

τ = L/R

where L is the inductance in henries, and R is the resistance in ohms. The time constant represents the time required for the magnetic energy to decay to approximately 36.8% of its maximum value.

In this case, L = 5 H and R = 22 ohms. Therefore, the time constant of the circuit is:

τ = L/R = 5 H / 22 ohms = 0.2273 seconds

To calculate the time required for the magnetic energy to decay to 13% of its maximum value, we can use the formula:

t = -ln(0.13) * τ

where ln is the natural logarithm. Plugging in the values, we get:

t = -ln(0.13) * 0.2273 seconds

t = 0.533 seconds

Therefore, it would take approximately 0.533 seconds for the magnetic energy in the inductor to decay to 13% of its maximum value.

b) To find the voltage across the inductor at that instant, we can use the formula:

V = L * di/dt

where V is the voltage across the inductor, L is the inductance, and di/dt is the rate of change of the current in the circuit.

At the instant when the magnetic energy in the inductor has decayed to 13% of its maximum value, the current in the circuit is given by:

I = I0 * e^(-t/τ)

where I0 is the initial current, and e is the mathematical constant approximately equal to 2.71828. Plugging in the values, we get:

I = I0 * e^(-0.533/0.2273)

I = 0.292 * I0

Therefore, the rate of change of current (di/dt) at that instant is given by:

di/dt = I / τ = (0.292 * I0) / 0.2273

Now, we can calculate the voltage across the inductor:

V = L * di/dt = 5 H * (0.292 * I0 / 0.2273)

V = 6.4 * I0 volts

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Answer:

46-D

47-C

48-F

49-A

50-B

I am not very sure I am right about those answers though.

If a force of magnitude 73.7 n is exerted horizontally, the force exerted by the hammer claws on the nail is 73.7 N.

Since the force of magnitude 73.7 N is exerted horizontally, and the force exerted by the hammer claws on the nail is assumed to be parallel to the nail, the force exerted by the hammer claws on the nail is also equal to 73.7 N. In physics, forces are considered to act in pairs, and the forces are equal in magnitude but opposite in direction. This concept is known as Newton's Third Law of Motion, which states that for every action, there is an equal and opposite reaction. Therefore, if a force of magnitude 73.7 N is exerted horizontally, the force exerted by the hammer claws on the nail must also be equal in magnitude and opposite in direction, which means that the force exerted by the hammer claws on the nail is also equal to 73.7 N.

In conclusion, the force exerted by the hammer claws on the nail is equal to 73.7 N.

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Answer:

x_{cm} = L / 2

Explanation:

The center of mass is defined by

         \(x_{cm}\) = 1 / M ∑ m_{i}  x_{i}

where M is the total mass of the system

in this case the system is continuous so, for which we use the density

      ρ = dm / dx

      dm = ρ dx

substituting

        x_{cm} = 1 / M ∫ x ρ dx

        x_{cm} = ρ / M ∫ x dx

we integrate and evaluate from x = 0 to x = L

        x_{cm} = ρ / M (L² /2 -0)

we introduce the density which is constant

        ρ = M / L

        x_{cm} = 1 /M (M/L)  L² / 2

        x_{cm} = L / 2

Answer:

343.4 N    ( 340 N if using two significant digits)

Explanation:

If you are just asking for the normal force for a mass on flat, 0° surface

  normal force =   mg =   35 * 9.81 = 343.4 N

The nature of science is an extensive and multifaceted concept that refers to various qualities, including its subject matter, methodology, principles, and theories.

It is a process of systematic inquiry that aims to explain the natural world through empirical observation, testing, and interpretation.

Science is characterized by its openness to criticism, objectivity, and the search for evidence to support or refute hypotheses and theories.

Science is dynamic and continuously evolving, with new discoveries, theories, and innovations that challenge our understanding of the world around us.

The nature of science encompasses several key concepts, including the use of empirical evidence, peer review, and the scientific method.

Empirical evidence refers to observable, measurable, and testable phenomena that can be subjected to scientific inquiry.

Peer review is the process by which scientific findings are evaluated by other experts in the field, ensuring their accuracy and validity.

The scientific method is a structured approach to inquiry that involves formulating hypotheses, testing them through experimentation or observation, and drawing conclusions based on the data collected.

Scientific knowledge is tentative and provisional, meaning that it is subject to change in the light of new evidence or findings.

As a result, science is a self-correcting process that relies on continued experimentation, observation, and testing to refine and expand our understanding of the natural world.

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When you draw all 4 of those moves, you see that he winds up 9m North and 11m West of where he started.

So the magnitude of his displacement is

D = √(9² + 11²)  m²

D = √(81 + 121)  m²

D = √(202)  m²

D = 14.2 m

The direction is arctan(-11/9) = 50.7° west of North

Answer:

The mass will have the most KE at the midpoint of motion (velocity is a maximum)

Total Energy = KE + PE = constant

At zero displacement the potential energy equals zero and the kinetic energy is a maximum.

Answer:

I think it's point C but I'm not sure

Answer:

silverware and tupperware?

Answer:

5400 N

Explanation:

f=ma

f= 1200*4.5

f=5400N

Option B is correct; It describes the third (missing) ray

here is a concept known as "angle of incidence" which refers to the angle between an incident ray and the normal (perpendicular) to a surface at the point of incidence.

When light or a ray of any electromagnetic wave encounters a boundary between two different mediums (e.g., air and water), the angle of incidence is the angle at which the ray approaches the surface before it is either reflected, refracted, or absorbed.

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Answer:

B

Explanation:

Answer:

D

Explanation:

The concept of time in space can be different from time on Earth due to the effects of time dilation. Time dilation occurs due to differences in gravitational fields and relative motion.

If we consider an astronaut who is in a relatively low-gravity environment and not traveling at a significant fraction of the speed of light, the time experienced by the astronaut in space would be very similar to the time experienced on Earth. In this scenario, one hour in space would be approximately the same as one hour on Earth.

However, if we consider extreme cases, such as an astronaut near a black hole or traveling at near-light speeds, time dilation effects would become significant. In these situations, the time experienced by the astronaut would be different from the time on Earth.

It's important to note that the magnitude of time dilation effects depend on the specific conditions and relative velocities involved. For most common space travel scenarios, the difference in time between space and Earth is negligible, and one hour in space would correspond to one hour on Earth.

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Answer:

Approximately \(31\%\) assuming that \(g = 9.81\; {\rm N \cdot kg^{-1}}\).

Explanation:

Consider an object of mass \(m\) in a uniform gravitational field of strength \(g\). If the height of that object increased by \(\Delta h\), the gravitational potential energy of that object would increase by \(m\, g\, \Delta h\).

In this question, the mass of the rocket is given to be \(m = 0.55\; {\rm kg}\). Assume that \(g = 9.81\; {\rm N \cdot kg^{-1}}\). The rocket has gained a height of \(\Delta h = 23\; {\rm m}\). Thus, the gravitational potential energy of this rocket would have increased by:

\(\begin{aligned} m\, g\, \Delta h &= 0.55\; {\rm kg} \times 9.81\; {\rm N \cdot kg^{-1}} \times 23\; {\rm m} \\ &\approx 124.1\; {\rm J} \end{aligned}\).

In other words, the useful energy output from the combustion of the rocket fuel was approximately \(124.1\; {\rm J}\).

The energy input to this rocket was given to be \(400.0\; {\rm J}\). Thus, the efficiency of the energy conversion would be:

\(\begin{aligned} \text{efficiency} &= \frac{(\text{useful energy out}\text{put})}{(\text{energy in}\text{put})} \times 100\% \\ &\approx \frac{124.1\; {\rm J}}{400.0\; {\rm J}} \times 100\% \\ &\approx 31\%\end{aligned}\).

Answer: The answer is D. KNO3

Explanation:

The graph shows that the KN03 going straight up from the temperature sign so you reversed that so that it will make it to 90°C to 30°C

To solve this we must be knowing each and every concept related to solubility. Therefore, the correct option is option D among all the given options.

The greatest amount of one material that may be dissolved in the other is referred to as its solubility. It is the most solute that may be dissolved into a solvent near equilibrium, resulting in a saturated solution.

When specific circumstances are satisfied, more solute can be dissolved further than the solubility limit point, resulting in a supersaturated solution. Adding extra solute after saturation or supersaturation does not enhance the concentration in the solution. Rather, the excess solute begins to precipitated out of solution. KNO\(_3\) is the compound that would have the greatest percentage recovered after cooling a saturated solution of that compound from 90°C to 30°C.

Therefore, the correct option is option D.

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Given:

The force is in the vertical direction is

The force is in a horizontal direction

velocity of the puck is

time during which puck is in contact with hockey is

Required:

(1)Actual force on puck is

Answer:

t = 26.8 s

Explanation:

Here, we can use the second equation of motion to calculate the required time:

\(s = v_it + \frac{1}{2}at^2\)

where,

s = distance = 1800 m

vi = initial speed = 0 m/s

t = time needed = ?

a = acceleration = 5 m/s²

Therefore,

\(1800\ m = (0\ m/s)t+\frac{1}{2}(5\ m/s^2)t^2\\\\t^2 = \frac{(1800\ m)(2)}{5\ m/s^2}\\\\t = \sqrt{720\ s^2}\)

t = 26.8 s

Answer:

In a material, the magnetic behavior depends on the alignment of magnetic moments of the atoms. Magnetic moments are generated by the motion of the electrons in the atoms. When the magnetic moments of atoms in a material are aligned in a specific pattern, it creates a magnetic field which results in the material being magnetic.

In many materials, the magnetic behavior arises due to the alignment of magnetic domains, which are regions of atoms with magnetic moments aligned in the same direction. When many domains with aligned magnetic moments are present in a material, the material becomes magnetic.

The magnetic behavior of a material depends on the number of electrons and the arrangement of those electrons in the atoms. In particular, for an atom to have a magnetic moment, it must have unpaired electrons, meaning electrons that are not paired with another electron with the opposite spin. When these unpaired electrons in the atoms are aligned, they generate a magnetic moment. If all electrons are paired, there will not be a net magnetic moment, so the material will not be magnetic.

So, in summary, the magnetic behavior of a material is determined by the alignment of magnetic moments of atoms. When the magnetic moments of many atoms in a material align in the same direction, it creates a magnetic field, leading to a material being magnetic. This alignment is usually present in magnetic domains consisting of atoms with unpaired electrons.

A column of water that is 10.2 m tall would yield same pressure at the bottom as a column of mercury that is 0.76 m tall, assuming that vacuum could be maintained at the top of water column.

In chemistry, pressure refers to the amount of force exerted per unit area by a gas, liquid or solid on surface.

a. The pressure at the bottom of a column of mercury that is 0.76 m tall is given by:

pressure = density x gravity x height

So, pressure at the bottom of column of mercury is:

pressure = (1.36 x 10⁵ N/m³) x (9.81 m/s²) x (0.76 m)

= 9.98 x 10⁵ N/m²

b. pressure = density x gravity x height

height = pressure / (density x gravity)

height = (9.98 x 10⁵ N/m²) / (1.00 x 10⁴ N/m³ x 9.81 m/s²)

= 10.2 m

So, column of water that is 10.2 m tall would yield same pressure at the bottom as column of mercury that is 0.76 m tall, assuming that vacuum could be maintained at the top of water column.

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Known :

z1 = 380 ft

z2 = 210 ft

D1 = 8 in

D2 = 4 in

hL = 36 ft

Solution :

Continuity Equation

Q1 = Q2

A1 • V1 = A2 • V2

(πD1²/4) • V1 = (πD2²/4) • V2

D1² • V1 = D2² • V2

8² • V1 = 4² • V2

V2 = 4V1 ... (i)

Energy Equation :

P1/γ + V1²/2g + z1 = P2/γ + V2²/2g + z2 + hL

Since P1 = P2, then

V1²/2g + z1 = V2²/2g + z2 + hL

V1²/2(32.2) + 380 = V2²/2(32.2) + 210 + 36

V2² - V1² = 8.63 × 10³ ... (ii)

Subtitute (i) into (ii)

(4V1)² - V1² = 8.63 × 10³

15V1² = 8.63 × 10³

V1 = 24 ft/s

Q = A1 • V1

Q = [π(8/12)² / 4] • 24

Q = 8.377 cfs

As a result, each string is under about 71.3 N of tension.

The forces tugging on the rope from either end cause a certain strand of string or rope to be under strain. Recall that force equals mass times acceleration. Every change in acceleration or mass of the objects the rope is supporting will result in a change in tension in the rope, assuming the rope is stretched firmly.

The strain in the strings balances the block's weight in the vertical direction, giving us: 2T cos θ = mg

Therefore, we have: 2T sin θ = 0

since sin θ = 0 when θ = 26.3°.

Solving the first equation for T, we get:

T = mg / (2cos θ)

Substituting the given values, we get:

T = (14.7 kg)(9.81 m/s²) / (2cos 26.3°)

T ≈ 71.3 N

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The closest distance and angle to this question are 1540.35 kilometers and 38.4 ° S. (depending on how you rounded).

There is a common misconception that distance & displacement are simply two different terms for the same thing. But separation separates the concepts of distance and displacement. The total distance covered by an object is always larger than the movement between those two sites, even if it changes direction throughout the course of its voyage.

The smallest (straight line) length between a body's starting position and its final location—represented by an arrow pointing from starting spot to final position—is referred to as a brain's displacement when it moves through one position to another.

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