what is the relationship between the apparent, size, mass, scale or optical weight of two or more projects?

Answer:

space is the answerrrerreer

The velocity of the boat after the package has been thrown is 0.353 m/s.

The velocity of the boat can be determined using the conservation of momentum principle.

The principle of the total momentum of an isolated system remains constant if no external forces act on it.

In this scenario, the initial total momentum of the child-boat system is zero (since the boat was originally at rest), and the final total momentum must be equal to the initial total momentum.

The momentum of the package before it was thrown is

m * v = 10 kg * 3 m/s = 30 kg m/s,

where m is the mass of the package and v is its velocity. After the package has been thrown, the momentum of the system is

(75 kg + 10 kg) * Vb = 85 kg * Vb.

85 kg * Vb = 30 kg m/s

Vb = 30 kg m/s / 85 kg = 0.353 m/s.

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Answer:

S = V0 t + 1/2 a t^2      net distance traveled

5.2 = a/2 * 25

a = 10.4 / 25 = ,416 m / s^2

F = m * a

m = F / a = 24 / .416 = 57.7 N

The equilibrium of the small plastic ball hanging between the plates of a capacitor can be analyzed using the principles of electrostatics. To find the magnitude of the charge on each plate, we can use the following steps:

1. Calculate the weight of the ball using the formula W = mg, where m is the mass of the ball and g is the acceleration due to gravity. In this case, the mass is given as 5.56× 10^3 kg and the acceleration due to gravity is approximately 9.8 m/s^2.

2. Determine the tension in the thread. Since the ball is in equilibrium, the tension in the thread must balance the weight of the ball. The tension in the thread can be calculated using the component of the weight in the vertical direction, which is given by T = mg cosθ, where θ is the angle the thread makes with the vertical. In this case, θ is given as 30.0°.

3. Find the electric field strength between the plates of the capacitor. The electric field strength can be calculated using the formula E = F/q, where F is the force acting on the charged ball and q is the charge on the ball. The force acting on the charged ball is equal to the tension in the thread, so we can substitute T for F in the formula. The value of q is given as 0.196 µC.

4. Calculate the magnitude of the charge on each plate. The magnitude of the charge on each plate is equal to the product of the electric field strength and the area of each plate. In this case, the area of each plate is given as 0.01805 m².

By following these steps, you can find the magnitude of the charge on each plate. Make sure to carry out the calculations accurately and use the correct units throughout the process.

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Answer:

Explained below.

Explanation:

In electric heaters, the wire used is nichrome wires and it can resist oxidation. Whereas, in electric bulbs, wires used are called tungsten and they undergo Oxidation begins at high temperatures between 500°C and 1200°C. Therefore, we would can't interchange because tungsten wires need a protective film/inert gas to withstand the high temperatures so that the wires don't get weak and break.

If F = 37 N, the static frictional force between the block and the table and the minimum force required to move it must be equal.

It is the force that regulates itself. The value of static friction varies from zero to the smallest force required to initiate motion. The formula for determining static friction is as follows: Normal Force divided by the static friction coefficient is static friction.

Although the maximum static friction will rise, the frictional force will always be the same as the weight in mg because friction cannot accelerate an object. Because FrN can take any value less than N to balance the weight, this is the case.

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Answer:

The straight down arrow

Explanation:

Next time add a picture to also help those who would like to answer. :)

Option D is the correct answer.

To demonstrate the hypothesis, the control experiment must be the nail with 8 coils.

A control experiment is the experiment that remains unchanged or unaffected by other variables.

A controlled experiment is simply an experiment in which all factors are held constant except for one: the independent variable.

For this given experiment, the number of paper clips lifted depends on the number of coils around the wire and voltage applied.

To demonstrate that for every 8 additional coils, you will be able to pick up two additional paper clips, we must have a control experiment, that is an experiment with which we will compare the out come.

This control experiment must be the nail with 8 coils.

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The moment of inertia of the physical pendulum about the pivot point is approximately 1.561 kg·m².

To determine the moment of inertia of the physical pendulum about the pivot point, we can use the formula for the period (T) of a physical pendulum in terms of its moment of inertia (I), mass (m), and distance from the pivot point to the center of mass (r):

T = 2π √(I / (m × g × r))

where:

T is the period of the pendulum,

I is the moment of inertia about the pivot point,

m is the mass of the pendulum,

g is the acceleration due to gravity,

r is the distance from the pivot point to the center of mass.

We are given the frequency (f) of the pendulum, which is the reciprocal of the period:

f = 1 / T

Rearranging the formula for T, we can solve for I:

I = (4π² × m × r²) / (f² × g)

Substituting the given values:

m = 2.40 kg

r = 0.500 m

f = 0.570 Hz

g = 9.8 m/s² (approximate value for acceleration due to gravity)

I = (4π² × 2.40 kg × (0.500 m)²) / ((0.570 Hz)² × 9.8 m/s²)

Calculating:

I ≈ 1.561 kg·m²

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The terminal speed of the balloon is approximately 1.29 m/s

To find the terminal speed of the latex balloon, we can use the concept of buoyancy and drag force.

1. Calculate the volume of the latex balloon:
  - The diameter of the balloon is 30 cm, so the radius is half of that, which is 15 cm (or 0.15 m).
  - The volume of a sphere can be calculated using the formula: V = (4/3)πr^3.
  - Plugging in the values, we get: V = (4/3) * 3.14 * (0.15^3) = 0.1413 m^3.

2. Calculate the buoyant force acting on the balloon:
  - The buoyant force is equal to the weight of the displaced fluid (in this case, air).
  - The weight of the displaced air can be calculated using the formula: W = mg, where m is the mass of the air and g is the acceleration due to gravity.
  - The mass of the air can be calculated by subtracting the mass of the helium from the mass of the balloon: m_air = (2.5 g - 2.4 g) = 0.1 g = 0.0001 kg.
  - The acceleration due to gravity is approximately 9.8 m/s^2.
  - Plugging in the values, we get: W = (0.0001 kg) * (9.8 m/s^2) = 0.00098 N.

3. Calculate the drag force acting on the balloon:
  - The drag force is given by the equation: F_drag = 0.5 * ρ * A * v^2 * C_d, where ρ is the density of air, A is the cross-sectional area of the balloon, v is the velocity of the balloon, and C_d is the drag coefficient.
  - The density of air is approximately 1.2 kg/m^3.
  - The cross-sectional area of the balloon can be calculated using the formula: A = πr^2, where r is the radius of the balloon.
  - Plugging in the values, we get: A = 3.14 * (0.15^2) = 0.0707 m^2.
  - The drag coefficient for a sphere is approximately 0.47 (assuming the balloon is a smooth sphere).
  - We can rearrange the equation to solve for v: v = √(2F_drag / (ρA * C_d)).
  - Plugging in the values, we get: v = √(2 * (0.00098 N) / (1.2 kg/m^3 * 0.0707 m^2 * 0.47)) ≈ 1.29 m/s.

Therefore, the terminal speed of the balloon is approximately 1.29 m/s.

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Wildfires and floods get worse. Weather extremes are becoming frequent. Regions as a whole eventually become inhospitable. All of these impacts grow as atmospheric co2 goods increase, forcing nations to shift course.

Experts have cautioned that globe is warming because of human activity to a point that several regions are suffering irreparable harm. The General Assembly intergovernmental panels on climate change published the report.

More frequent and severe droughts, storms, fires, rising sea levels, melting glaciers, and increase in global temperatures may all directly harm animals, destroy the environments they depend on for existence, and have a catastrophic effect on the way people live and communities.

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The spectrum observed from the Sun (or any star) would exhibit an absorption spectrum. This is because the outer gaseous atmosphere of the star absorbs specific wavelengths of light, resulting in dark absorption lines in the spectrum.

In the cooler, lower-density outer atmosphere, where white light from the star travels, some atoms or molecules in the atmosphere absorb photons with particular energy. In the spectrum, these absorptions show up as black lines at specific wavelengths. The specific set of absorption lines that each element or molecule generates results in a distinctive pattern that can be used to identify the elements that are present in the star's atmosphere.

The absorption spectrum offers insightful data on the chemical make-up and physical characteristics of the star. Astronomers can ascertain the elements present, their abundances, and other characteristics like the temperature, pressure, and velocity of the star's atmosphere by examining the absorption lines.

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Answer:

D) Both parts are true.

Hey there, hope my answer helps :)

Answer: D) Any object that has motion has kinetic energy, while any object not in motion but with the potential to do work has potential energy.

The device that converts chemical energy into electrical energy is a battery.

On the other hand, the resistor is a passive element that is mainly used to limit the current in a circuit.

A resistor doesn't convert chemical energy into electrical energy.

Therefore, we can conclude that the given statement is false

Answer:

Mass

Explanation:

The total sum of atoms in an object is the mass of the object. There are several ways to quantify the number of atoms in a substance.

Distance = Speed × Time

The distance travelled during 5 hours = 0 × 5 = 0 km

The distance travelled during 5 hours = 50 × 5 = 250 km

The distance travelled during 5 hours = 60 × 5 = 300 km

The distance travelled during 5 hours = 60 × 4 = 240 km

Answer:19.39

Explanation:

The force exerted on the black card by the radiation is 5.06×\(10^{-8}\) N.

The force exerted on an object by the electromagnetic radiation is:

Force = \frac{(Intensity)(Area)}{c}

where:

Intensity is the intensity of the radiation (\(190 W/m^2\)),

The area is the area of the black card

= (20 cm)(40 cm)= (0.2 m)(0.4 m)= 0.08 m², and

c is the speed of light (approximately 3× \(10^8 m/s\)).

We know that 1 watt = 1 newton meter/second.

So, 190 watt = 190 newton meter/second.

Substituting the given values into the equation we get:

Force = \(\frac{(190 Wm^{-2} )(0.08 m^2)}{(3)(10^8 m/s)}\) = 5.06×\(10^{-8}\) N

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Answer:

8. 9×10³N/m

Explanation:

k=2U /x²

= 2(25J) / 0.075m²

=8. 9×10³N/m  

Electric Power developed in the resistor will be 10 watts.

A resistor is an electrical component that controls or restricts how much electrical current may pass across a circuit in an electronic device. Additionally, resistors may be used to supply a specified voltage to an active device like a transistor.

a passive electrical device that has two terminals and is employed in electrical circuits to limit or regulate the flow of current. A resistor's primary function is to reduce the voltage and reduce current flow in a specific area of the circuit.

Given that,

Voltage drop, V = 50 volts.

Resistance, R = 250 ohms.

The power developed in an electrical circuit is given by:

P = VI

As we know, from the ohm's law: V = IR

Making I the subject of formula;

I = V/R

Substituting into the equation we get:

P = V × (V/R)

or, P = V²/R

or, P = (50)²/250

or, P = 10 watts

Hence the Power developed in the resistor will be 10 watts.

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The period of oscillation of the quartz crystal in the digital watch is 30.5 microeconds.

The period of oscillation, T, is the time taken for one complete cycle of the oscillation. It is the inverse of the frequency, f, which is given as 32.8 kHz. Therefore, T = 1/f = 1/(32.8 x 10^3) = 30.5 microseconds. This means that the quartz crystal in the digital watch completes one cycle of oscillation every 30.5 microseconds.

The period of oscillation is an important parameter for timekeeping devices, as it determines the accuracy of the clock. In this case, the high frequency of the quartz crystal ensures that the digital watch can keep accurate time to within a few seconds per month.

So none of the above option is correct.

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Answer:

The answer is Polarization

Answer:

8 million animals

Explanation:

This is because all over the world, animals are consumed as food and they serve as source of protein.

Animals are used to make different delicacies depending on the choice of the consumer and it is the major source of protein. Every hour, about 8 millions are killed and are sold to consumers and other parts of it can be use for other things. Examples of animals consumed are goat, sheep, cow, chicken e t.c.

Answer:

During the segments B - C and D - E, the car stopped since the y axis is the distance and the distance stayed the same in between those segments.

For a simpler answer, the flat horizontal lines on the graph are the times when the car was stopped.

Low-pressure systems rotate in a counter-clockwise direction due to the Coriolis effect. The Coriolis effect is caused by the rotation of the Earth and the resulting deflection of moving objects in relation to the Earth's surface.

In the Northern Hemisphere, low-pressure systems are characterized by converging winds that spiral inward towards the center. As air flows from high-pressure areas to low-pressure areas, it experiences the Coriolis effect. The Coriolis force deflects the air to the right in the Northern Hemisphere, causing the air to rotate counterclockwise around the low-pressure center.

Conversely, in the Southern Hemisphere, the Coriolis effect causes air to deflect to the left. As a result, low-pressure systems in the Southern Hemisphere rotate in a clockwise direction.

The rotation direction of low-pressure systems is a direct consequence of the Coriolis effect and is consistent with the general atmospheric circulation patterns on Earth.

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Usain Bolt's average speeds for each 10-meter section of his world record 100 m run in Berlin 2009 are as follows: 0.190 m/s, 0.186 m/s, 0.122 m/s, 0.122 m/s, and 0.120 m/s.

Usain Bolt's split times from his world record 100 m run in Berlin in 2009 is given below:Section / mTime / s50-601.890.990.90 60-700.860.83 70-800.820.83 80-900.820.83 90-1000.83To calculate Usain Bolt's average speed for each 10-meter section, we can use the formula :Average speed = distance/timeDistance for each section = 10mWe have the time for each section from the table above, thus we can find the average speed for each section:Section / mTime / sSpeed / m s-150-600.190 m s-160-700.186 m s-170-800.122 m s-180-900.122 m s-190-1000.120 m s-1In the table above, the average speed for each section of the 100 m distance is given in m s-1. Thus, Usain Bolt's average speed for the first 10m is 0.190 m s-1, for the second 10m, it is 0.186 m s-1, for the third 10m, it is 0.122 m s-1, for the fourth 10m, it is 0.122 m s-1, and for the last 10m, it is 0.120 m s-1.

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Answer: C. Be more dense and flow under warm air.

Explanation:

think of a supermarket selling dairy products and when you open the fridge to get the milk, outside the supermarket is hot and inside the fridge is cold ice.