Which is true if we bring together a group of negatively charged particles?.

Answer:

A. That enough light of any frequency would cause electrons to flow.

Explanation:

A P E X

Scientists using classical, Newtonian physics expect to observe the photoelectric effect because enough light of any frequency would cause electrons to flow.

When a medium receives electromagnetic radiation, electrostatically charged particles are emitted from or inside it.

The emission of ions from a steel plate when light falls on it is a common definition of the effect. The substance could be a solid, liquid, or gas; and the released particles could be protons or electrons.

Scientists using classical, Newtonian physics expect to observe the photoelectric effect because enough light of any frequency would cause electrons to flow.

The flow of the electron is a must to understand the photo electric effect.

Hence option A is correct.

To learn more about the photoelectric effect refer to the link;

https://brainly.com/question/9260704

Answer:

This is false.

Explanation:

While it is true that the entropy of fusion is always negative for a pure substance, this is not the case for mixtures. For example, the entropy of fusion of water is positive when it is mixed with a non-polar solvent such as hexane.

All entropies of fusion are negative. This is false statement.

The microscopic specifics of a system are not taken into account from a thermodynamics perspective on entropy. The behaviour of a system is instead described in terms of thermodynamic parameters as temperature, pressure, entropy, and heat capacity using the concept of entropy. This thermodynamic explanation took the systems' equilibrium condition into account.

The thermodynamic qualities that were defined in terms of the statistics of a system's molecular motions were the focus of the statistical definition that was later established. A measurement of molecular disorder is entropy.

Entropy is increased when a solid turns into a liquid. As phase changes result in more molecular freedom of movement, entropy rises.

Learn more about entropy here:

https://brainly.com/question/13146879

#SPJ6

The size of the breaker for a 120 volt water heater depends on the wattage of the heater and the amperage required to power it, typically a 15-amp breaker is used for a 1500W water heater.

To determine the correct breaker size, you need to divide the wattage of the heater by the voltage it operates on (120V) to get the amperage required.

For example, if your water heater has a wattage of 1500W, the amperage required would be:

Amperage = Wattage / Voltage

        = 1500W / 120V

        = 12.5A

In this case, you would need a 15-amp breaker to safely power the water heater.

It's important to choose a breaker that is rated for the amperage required by the water heater to prevent electrical overloading and potential damage to the wiring or electrical system.

It's always a good idea to consult with a licensed electrician to ensure that the breaker and wiring are installed correctly and meet local building codes and safety requirements.

Learn more about breaker

brainly.com/question/30795854

#SPJ11

Question :-

Answer :-

Explanation :-

As per the provided information in the given question, we have been given that the Power is 600 Watt , Voltage is given as 120 Volt . And, we have been asked to calculate the Current .

Now, for calculating the Current , we will use the Formula :-

\( \bigstar \: \: \boxed{ \sf{ \: Current \: \: = \: \: \dfrac{ \: Power \: }{Voltage} \: }} \\ \)

Therefore, by Substituting the given values in the above Formula :-

\( \dag \: \: \: \sf {Current \: \: = \: \: \dfrac{\: Power \:}{Voltage}} \\ \)

\( \longmapsto \: \: \sf {Current \: \: = \: \: \dfrac {\: 600 \:}{120}}\)

\( \longmapsto \: \: \bf {Current \: \: = \: \: 5 \: Ampere} \)

Hence :-

\( \underline {\rule {89pt}{4pt}} \: \: \underline {\rule {89pt}{4pt}} \)

Now that s=u*t+at2 is being used, s =0*+302 equals 300 m. For instance, if the plane was travelling at 300 m/s2, its final velocity before it took off was 30 m/s2.

If there isn't a net force exerted on the item that would cause it to accelerate, there is constant velocity. Drag and thrust are the two primary forces affecting the forward motion of an aeroplane.

The lift and push produced by an aeroplane while it is travelling level and straight at a steady velocity balance its weight and drag, respectively. Yet, as the aircraft climbs and descends, speeds up or slows down, and turns, the balance of forces varies.

To know more about velocity visit:

https://brainly.com/question/17127206

#SPJ1

Answer:

73.1 m/s

Explanation:

Given:

Δx = 160 m

v = 6.9 m/s

t = 4 s

Find: v₀

Δx = ½ (v + v₀) t

160 m = ½ (6.9 m/s + v₀) (4 s)

v₀ = 73.1 m/s

Answer:

I think its 1

Explanation:

The reason why I think it's 1 is because 0.5m/s^2 /0.5 m/s= 1 s

Answer:

686 N

Explanation:

OH BOY, NEWTONS LAWS OF MOTION!

look at this:

\(F = ma\)

a fun fact is that acceleration 9.8 m/s^2 is actually GRAVITY.

so lets do this and rewrite the formula...

\(F = 70kg * 9.8 m/s^2\)

lets multiply 70 and 9.8

we get 686 N.

if you want to be technical about it...... the answer should only have two sig figs. so it would be... \(6.9 * 10^{2}\) N

NICE!

To calculate the current produced by an electrical circuit, we can use Ohm's Law, Therefore, the circuit produce A current of 1.2 amperes . So the answer is A) 1.2 Amperes.

To determine the current, we can use Ohm's Law, which states that the current (I) in a circuit is equal to the voltage (V) divided by the resistance (R). Mathematically, this can be expressed as:
I = V/R
Given the values in the question, we have a voltage (V) of 12 Volts and a resistance (R) of 10 Ohms. Plugging these values into the equation, we get:
I = 12V / 10Ω
I = 1.2 Amperes
So, the correct answer is:
A) 1.2 Amperes
The electrical circuit produces a current of 1.2 Amperes when given a driving voltage of 12 Volts and a resistance of 10 Ohms.

Learn more about Ohm's Law here:

https://brainly.com/question/1247379

#SPJ11

A horizontal net force f is exerted on a 4.0 kg object at rest. The object starts at x = 0 m and travels 6.0 m along a horizontal frictionless surface. The net force F as a function of the object's position x is shown below.

What is the velocity of the object?

Answer: 6.7 m/s

Answer:

b

Explanation:

Answer:

I. Period = 1.3 seconds

II. Frequency = 0.769 Hertz

Explanation:

Given the following data;

Number of oscillation = 240 cycles

Time = 5.2 minutes.

Conversion:

1 minute = 60 seconds

5.2 minutes = X seconds

X = 60 * 5.2

X = 312 seconds

To find the following;

I. Period

Mathematically, the number of oscillation of a pendulum is given by the formula;

\( Number \; of \; oscillation = \frac {Time}{Period} \)

Making period the subject of formula, we have;

\( Period = \frac {Time}{Number \; of \; oscillation} \)

Substituting into the formula, we have;

\( Period = \frac {312}{240} \)

Period = 1.3 seconds

II. Frequency

\( Frequency = \frac {1}{Period} \)

Substituting the values into the formula, we have;

\( Frequency = \frac {1}{1.3} \)

Frequency = 0.769 Hertz

Answer:

Explanation:

Particles of a solid are closely packed, and  when a solid is hit to produce a sound the kinetic energy present in the solid will cause the particles to vibrate vigorously in the intermolecular spaces in the solid, whereas the paticles of liquids and gases are rather further apart therefore having large intermolecular spaces between particles.

Answer:

24.5 N

Explanation:

The falling object experiences its weight acting downwards and the air resistance in the opposite direction.

The air resistance increases with velocity so there may come a point, depending on the shape of the object and if there is sufficient height, where these 2 forces are equal.

Since the object has no net forces acting on it it will, according to Newton, no longer accelerate but continue with a constant velocity.

This is called Terminal Velocity.

So: Air resistance = weight R = m  R = 2.5 × 9.8  = 24.5N

Answer:

24.5 N

Explanation:

When an object in free fall reaches terminal velocity, Fd = Fg

Therefore, Fd (force of air resistance) = (2.5 kg)(9.8 m/s²) = 24.5 N

Note:  if you have to calculate the terminal velocity, use the formula

Vt = \(\sqrt{2gh}\)

After 15 minutes of walking with an average velocity of 1.8 m/s to the South, the man would be 1.35 kilometers away from his home.

The distance can be calculated by multiplying the average velocity by the time traveled. Since velocity is a vector quantity with both magnitude and direction, the Southward direction is taken into account when calculating the displacement. As the man walks for 15 minutes (or 0.25 hours), the distance covered would be (1.8 m/s * 0.25 hours) = 0.45 kilometers.

To know more about velocity, visit

https://brainly.com/question/22038177

#SPJ11

Answer:

A physical property of matter is electric charge. It is caused by an imbalance in the number of protons and electrons in a material. Whether there are more protons than electrons in a substance, it is positively charged if there are more electrons than protons, it is negatively charged.

Explanation:

The correct answer is c. weathering.

Weathering is the process by which exposed rock is broken down into smaller fragments and dissolved ions. This can happen through a variety of physical and chemical processes, such as freeze-thaw cycles, the action of water and wind, or the presence of acidic substances.

Physical weathering involves the breakdown of rock through mechanical processes, such as the expansion and contraction of rock due to changes in temperature, or the abrasion caused by water or wind carrying sediment. Chemical weathering, on the other hand, involves the breakdown of rock through chemical reactions, such as the dissolution of rock by acidic rainwater.

Overall, weathering plays an important role in the formation of soil and the cycling of nutrients in ecosystems. It also contributes to the erosion of landscapes over time, as weathered rock fragments are carried away by wind and water.

To learn more about fragments refer to:

brainly.com/question/14127090

#SPJ4

By using the torque, the shear stress is 2.36 lb/ft².

We need to know about torque to solve this problem. Torque is the rotational equivalent of linear force. It can be determined as

τ = F x r

where τ is torque, F is perpendicular force and r is radius.

Shear stress can be calculated by torque

P = F / A

P = τ / (π.r³)

where P is shear stress, r is the radius.

From the question above, the parameter given are

τ = 200 ft.lb

d = 6 ft

Find the radius

r = 1/2 . d

r = 3 ft

Find the shear stress

P = τ / (π.r³)

P = 200 / (π.3³)

P = 2.36 lb/ft²

Find more on torque at: https://brainly.com/question/14839816

#SPJ4

COGS stands for Cost of Goods Sold. It represents the direct costs incurred in producing or acquiring the goods or services that a company sells to generate revenue. It includes the cost of raw materials, direct labor, and manufacturing overhead directly associated with the production process. For example, in a bakery, the cost of flour, sugar, and other ingredients, as well as the wages of the bakers involved in producing the bread, would be part of the COGS.

OH stands for Overhead. It refers to indirect costs incurred in the production process that cannot be directly attributed to a specific product or service. Examples of overhead costs include rent, utilities, salaries of administrative staff, and depreciation of equipment.

PP&E stands for Property, Plant, and Equipment. It represents the long-term tangible assets that a company uses in its operations. Examples include buildings, machinery, vehicles, and land. These assets are not easily converted into cash and are expected to be used over multiple accounting periods.

The J-curve is a graphical representation that shows the initial negative impact of an investment or policy change followed by a positive effect over time. It forms a shape resembling the letter "J" on a graph. The curve indicates that in the early stages, there may be a decline or negative impact, but as time progresses, the situation improves and leads to positive results. It is often used to illustrate the short-term costs or losses associated with investments before they generate positive returns in the long run.

The 3 F's refer to the three fundamental financial statements: the Income Statement, the Balance Sheet, and the Cash Flow Statement. These statements provide essential information about a company's financial performance, position, and cash flows. The Income Statement shows revenue, expenses, and net income or loss over a specific period. The Balance Sheet presents the company's assets, liabilities, and equity at a given point in time. The Cash Flow Statement provides information on the cash inflows and outflows, including operating activities, investing activities, and financing activities.

CULT stands for Customers, Understanding, Learning, and Teaching. It is a customer-centric approach to business that focuses on building strong relationships with customers by understanding their needs, continuously learning from them, and effectively communicating and teaching them about products or services. This approach aims to create loyal customers who not only make repeat purchases but also become advocates for the brand. Examples of CULT practices include conducting customer surveys, personalizing marketing messages, offering educational resources, and providing exceptional customer service.

In finance, Beta represents the measure of a stock's or investment's volatility in relation to the overall market. It measures the sensitivity of an asset's returns to changes in the market. A Beta of 1 indicates that the asset's price moves in line with the market. A Beta greater than 1 suggests higher volatility compared to the market, while a Beta less than 1 indicates lower volatility. For example, a Beta of 1.5 implies that the asset is expected to be 50% more volatile than the market.

The Break-Even graph is a graphical representation that shows the point at which total revenue equals total costs, resulting in zero profit or loss. It helps determine the level of sales or production volume needed to cover all fixed and variable costs. The graph plots the total revenue and total cost curves on the same axis. The break-even point is the intersection of these two curves. Below the break-even point, the company incurs a loss, while above the break-even point, it generates a profit. The graph visually illustrates the relationship between costs, revenue, and profit at different levels of output or sales.

Learn more about COGS here:

https://brainly.com/question/24561653

#SPJ11

The magnitude of the gravitational force experienced by a 67.5 kg person on the surface of Pluto is approximately \(2.49 \times10^-7 N.\)

The magnitude of the gravitational force is a scalar value that represents the strength of the gravitational attraction between two objects. It is a measure of the force of gravity acting on an object, regardless of its direction.

The magnitude of the gravitational force between two objects can be calculated using Newton's law of gravitation, which states that the force of gravity between two objects is proportional to the product of their masses and inversely proportional to the square of the distance between them. The formula for the force of gravity is given by:

\(F = G * (m1 * m2) / r^2\)

where F is the force of gravity, m1 and m2 are the masses of the two objects, r is the distance between them, and G is the gravitational constant.

Using this formula,  calculate the magnitude of the gravitational force experienced by a 67.5 kg person on the surface of Pluto:

\(F = G * (67.5 kg) * (5.2 \times 10^23 kg) / (4 \times 10^5 m)^2\)

\(F = 6.67 \times10^-11 Nm^2/kg^2 * (67.5 kg) * (5.2 \times 10^23 kg) / (4 \times10^5 m)^2\)

\(F = 6.67 \times 10^-11 * (67.5 kg) * (5.2 \times 10^23 kg) / (4 \times 10^5 m)^2\)

\(F = 2.49 \times 10^-7 N\)

To know more about magnitude of the gravitational force, visit:

https://brainly.com/question/30336074

#SPJ1

Doubling the amplitude of a wave causes its energy to quadruple.

The energy of a wave is directly proportional to the square of its amplitude. When the amplitude of a wave is doubled, its energy increases by a factor of four. This relationship arises from the mathematical expression for the energy of a wave, which includes the square of the amplitude.

In conclusion, doubling the amplitude of a wave leads to a significant increase in its energy, specifically quadrupling the original energy. This relationship highlights the strong dependence of wave energy on the amplitude, emphasizing the impact that changes in the wave's magnitude can have on its overall energy content.

To know more about amplitude of a wave click here:

https://brainly.com/question/32928325

#SPJ11

Mechanical energy is of two types,

1. Kinetic energy

2. Potential energy

When the girl is at the top of her jump, the speed of the girl becomes zero.

Thus, the kinetic energy of the girl at the top of her jump is,

where m is the mass of the girl and v is her speed,

Substituting the known values,

Thus, the kinetic energy of the girl is zero at the top of her jump.

The potential energy of the girl at the top of her jump is,

where g is the acceleration due to gravity and h is the height of the girl,

Thus, the potential energy of the girl at the maximum height is maximum.

Hence, the mechanical energy of the girl at the top is in potential energy form because her kinetic energy is zero at the top of her jump.

Answer:

50 N.

Explanation:

From the question given above, the following data were obtained:

Mass (m) = 5 Kg

Coefficient of friction (μ) = 0.36

Normal reaction (N) =?

Next, we shall determine the weight of the body. This can be obtained as follow:

Mass (m) = 5 Kg

Acceleration due to gravity (g) = 10 m/s²

Weight (W) =?

W = mg

W = 5 × 10

W = 50 N

Finally, we shall determine the normal reaction. This can be obtained as follow:

Weight (W) = 50 N

Normal reaction (N) =?

Normal reaction = weight of the body

N = W = 50 N

Thus, the normal reaction acting on the body is 50 N

A 75 kg satellite is in a stable circular orbit around Earth at an altitude of 340 km. Then, the speed of the satellite is 7.66 km/s.

The speed of a satellite in a circular orbit around Earth is given by;

v = √(GM/r)

where G is gravitational constant, M is mass of Earth, and r is radius of the orbit (which is the sum of the radius of Earth and the altitude of the satellite).

The mass of Earth is approximately 5.97 x 10²⁴ kg, and the radius of Earth is approximately 6.37 x 10⁶ m. To calculate the radius of the orbit, we need to add the altitude of the satellite (340 km) to the radius of Earth, and convert it to meters;

r = (6.37 x 10⁶ + 340 x 10³) m = 6.71 x 10⁶ m

Plugging in the values, we get;

v = √[(6.67 x 10⁻¹¹ N·m²/kg²) x (5.97 x 10²⁴ kg) / (6.71 x 10⁶ m)]

Simplifying the expression gives;

v = 7.66 x 10³ m/s

Therefore, the speed of the satellite is approximately 7.66 km/s.

To know more about circular orbit here

https://brainly.com/question/19131814

#SPJ1