HELP ASAP!!! 100 POINTS! NEED CORRECT ANSWER!! NO TROLLS!!

The focal distance for a convex lens is 80 cm. What kind of image is produced when the object distance is between 80 cm and 160 cm?
a) upright and larger
b) inverted and smaller
c) inverted and larger
d) upright smaller

Metals have shiny apperances

The method you do an exercise to target particular muscle groups is known as technique.

When workouts are performed properly, the muscles and joints that are being particularly targeted by the movement get the load. When an exercise is performed improperly, it frequently results in the loading of other joints and muscles as well as a reduction in the benefit to the target muscles.

Whatever your weightlifting objectives, using perfect form is the first and most crucial step. Technique has a greater influence than weight used, whether you're trying to bulk up or tonify. Bad form simply won't yield the same outcomes.

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Answer

yeard

Explanation:

cause it is

Answer:

The answer is true

Option b is the correct answer as only this statement is correct concerned with electric force i.e. It is possible for a small negatively-charged particle to float above a negatively charged surface.

Electric force is the repulsive or attractive interaction of two charged bodies. Newton's laws of motion describe the impact and effects of any force on a given body. One of the various forces that act on objects is the electric force.
Using the equation: F=q*E, it is clear that when the electric charge q is positive, the electric force and field share the same direction, whereas when the electric charge q is negative, they oppose each other.
The magnitude of an electric force is determined by the size of the charges and the distance between them.

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Answer:

The volume of water displaced by the raft is 0.233 m³

Explanation:

The question relates to Archimedes' principle which states that the buoyant force experienced by an object immersed in a fluid is equal to the weight of (the force of gravity on) the displaced fluid

The given parameters are;

The combined mass of the person and the raft, m = 233 kg

The liquid on which the raft is located = Water

The density of water, \(\rho _{water}\) = 1000 kg/m³

Weight = Mass, m × g

Where;

m = The mass of the object

g = The acceleration due to gravity = 9.8 m/s²

Given that the raft is on the surface of the water (floating), the buoyant force is equal to the combined weight of the person and the raft = 233 kg

The combined weight of the person and the raft, \(W_{combined}\) = 233 kg × 9.8 m/s² = 2,283.4 N

Therefore;

The buoyant force = 2,283.4 N = The weight of the water displaced

The mass of the water displaced, \(m_{water}\), = 2,283.4 N/(9.8 m/s²) = 233 kg

Density = Mass/Volume

The volume of water displaced by the raft = The mass of the water displaced/(The density of the water) = 233 kg/(1,000 kg/m³) = 0.233 m³.

Answer:

the volume displaced by the raft = 0.233 m3

Explanation:

correct for Acellus

The main advantage of the scientific method is that it is a systematic and objective way to acquire knowledge. The scientific method is a process for acquiring knowledge that has been used to great success in understanding the physical world. Astrology, on the other hand, is based on subjective interpretations of the positions of the stars and planets.

The scientific method is a process for acquiring knowledge that has been used to great success in understanding the physical world. It is based on the following steps:

1. **Observation:** The scientist observes a phenomenon and asks questions about it.

2. **Hypothesis:** The scientist proposes a hypothesis, or a possible explanation for the phenomenon.

3. **Experimentation:** The scientist designs experiments to test the hypothesis.

4. **Data analysis:** The scientist collects data from the experiments and analyzes it.

5. **Conclusion:** The scientist draws a conclusion about the hypothesis based on the data analysis.

The scientific method is an iterative process, meaning that the scientist may go back and forth between the different steps as needed.

Astrology, on the other hand, is a system of divination that attempts to predict future events by interpreting the positions of the stars and planets. Astrology is not based on the scientific method, and there is no evidence that it is a reliable way to predict the future.

The main advantage of the scientific method is that it is a systematic and objective way to acquire knowledge. The steps of the scientific method are designed to minimize bias and to ensure that the results of the experiments are repeatable. This makes the scientific method a reliable way to learn about the physical world.

Astrology, on the other hand, is based on subjective interpretations of the positions of the stars and planets. There is no scientific evidence to support the claims of astrology, and the results of astrological predictions are not repeatable.

In conclusion, the scientific method is a more reliable way to understand the physical world than astrology. The scientific method is based on a systematic and objective approach to acquiring knowledge, while astrology is based on subjective interpretations of the positions of the stars and planets.

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This is due to the fact that the force of gravity is directly proportional to the masses of the objects involved, and inversely proportional to the square of the distance between them.

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The distance between the Sun and Earth is approximately 93 million miles or about 150 million kilometers. This distance is equivalent to about 8 light minutes. Since light travels at a speed of approximately 186,282 miles per second or 299,792 kilometers per second, it takes around 8 minutes for light to travel from the Sun to Earth.

To calculate this distance, we can multiply the speed of light by the number of seconds in a minute (60) and then by the number of minutes in an hour (60) to get the distance traveled in one hour. Finally, we multiply this by the number of hours in a day (24) and by the number of days in a year (365.25) to get the total distance light travels in one year.

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Answer:

D. Sulfur hexafluoride.

Explanation:

Given data

*The given frequency is

*The another given frequency is

*The given speed of light is c = 3.0 × 10^8 m/s

(a)

The formula for the wavelength is given as

Substitute the known values in the above expression as

The another wavelength for the another frequency is calculated as

(b)

Radio spectrum is an electromagnetic spectrum where the frequency range belongs of wireless telecommunication.

The deflection of the beam at point C using the method of superposition is yet to be determined.

To determine the deflection at point C, we can use the method of superposition. This method allows us to analyze the beam's response to multiple independent loads by considering each load separately and then summing up their effects.

First, we consider the deflection caused by Load 1. We apply Load 1 to the beam and calculate the deflection at point C, assuming all other loads are absent. Let's denote this deflection as δ₁.

Next, we consider the deflection caused by Load 2. We apply Load 2 to the beam and calculate the deflection at point C, assuming all other loads are absent. Let's denote this deflection as δ₂.

Finally, we superpose the deflections caused by Load 1 and Load 2 to find the total deflection at point C. The deflection at point C is given by δ = δ₁ + δ₂.

To calculate the deflections δ₁ and δ₂, we need additional information about the specific loads and boundary conditions applied to the beam. Once we have this information, we can proceed with the calculations using the given value of (EI)beam.

Therefore, the deflection at point C using the method of superposition has not been calculated yet and requires further analysis of the beam's loads and boundary conditions.

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Answer:

The north part of the compass needle is attracted to the magnetic south pole of Earth, which is also known as the geographical north pole.  When it comes to magnets, opposites attract. This fact means that the north end of a magnet in a compass is attracted to the south magnetic pole, which lies close to the geographic north pole. Magnetic field lines outside of a permanent magnet always run from the north magnetic pole to the south magnetic pole. Therefore, the magnetic field lines of the earth run from the southern geographic hemisphere towards the northern geographic hemisphere.

Explanation:

The parakeets swing with a frequency of approximately 1.14 Hz.

The frequency at which the two parakeets swing on the swing can be determined by considering the relationship between the period of oscillation and the length of the pendulum.

The period of a pendulum is the time it takes for one complete oscillation, while the frequency is the reciprocal of the period, representing the number of oscillations per unit time.

In this case, we are given the distance of the combined center of mass of the parakeets below the pivot, which is 19.5 cm.

To find the frequency, we need to calculate the length of the equivalent pendulum, which is the distance from the pivot point to the combined center of mass of the parakeets.

Assuming the length of the equivalent pendulum is L, we can substitute the given values into the formula for the period of a pendulum, T = 2π√(L/g), where π is a constant (approximately 3.14159) and g is the acceleration due to gravity (approximately 9.8 m/s^2).

Converting the distance from centimeters to meters, we have L = 0.195 m. Substituting the values into the formula, we obtain T = 2π√(0.195/9.8).

Simplifying the equation, we have T = 2π√(0.02), which evaluates to approximately 0.879 s.

To calculate the frequency, we take the reciprocal of the period: f = 1/T = 1/0.879 ≈ 1.14 Hz.

Therefore, the parakeets swing with an approximate frequency of 1.14 Hz.

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the answer is zero (0). Isothermal process is a thermodynamic process that involves no change in temperature. Hence, during an isothermal process, the internal energy remains constant.

Therefore, the change in internal energy, ΔU = 0. Thus, the answer to your question is zero. The First Law of Thermodynamics states that the change in internal energy of a system is the sum of heat absorbed and work done by the system. It can be expressed as follows:ΔU = Q + W where ΔU is the change in internal energy, Q is the heat absorbed, and W is the work done by the system. During an isothermal process, the temperature of the gas remains constant. Hence, ΔU = 0. If 5.0 J of heat is removed from an ideal gas during an isothermal process, the gas must perform an equal amount of work to maintain its temperature. Therefore, the work done by the gas, W = -5.0 J. Since ΔU = Q + W, the change in internal energy, ΔU = Q + (-5.0 J) = Q - 5.0 J. Since the internal energy is constant during an isothermal process, the change in internal energy, ΔU = 0 - 5.0 J = -5.0 J. Hence, the answer is zero (0).

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Answer:

Scissors

Tap

Spanner

Explanation:

Answer:

v = -\frac{n \ m}{M} \ v'

for the man to return to the ship he must throw the balls in the opposite direction of the ship

Explanation:

For this exercise we can use the conservation of momentum. Let's form a system made up of man and baseballs.

Initial instant. Before throwing the balls

     p₀ = 0

Final moment. After throwing the balls

     \(p_{f}\) = M v + n m v '

where M is the mass of the man, m is the mass of each ball and n is the number of balls , v isthe speed man and v' is the speed ball

Since the forces are internal, the momentum of the system is conserved

     p₀ = p_{f}

      0 = M v + n m v ’

      \(v =- \frac{n \ m}{M} \ v'\)

If we analyze this expression, for the man to return to the ship he must throw the balls in the opposite direction of the ship

Answer:

Gravitational potential

Explanation:

Any object that is not on the surface of the Earth, but at a height instead has potential energy. Eventually, this can become kinetic energy once the object falls.

When an object is in a gravitational field, it has energy in its gravitational potential energy store.

The law that governs the conservation of electric charge in a closed system is known as the law of conservation of charge.

According to this law, the total amount of electric charge in a closed system remains constant and cannot be created or destroyed. As for how objects can change their charges in a closed system, it is because the distribution of electric charge can change.

For example, when two objects with different electric charges are brought into contact, electrons can flow from one object to the other until both objects have the same electric potential. This transfer of electrons results in a change in the charge of each object, but the total charge remains the same.

Another way objects can change their charges is through the process of ionization, where an atom loses or gains electrons, resulting in a change in the electric charge of the atom. Again, the total charge remains constant, as the lost or gained electrons must go somewhere.

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The speed of the moving train is approximately 33.5 m/s.

The beat frequency is given by the difference in frequency between the two horns, which is equal to the Doppler shift in frequency due to the motion of the moving train. Using the formula for the Doppler effect, we can solve for the speed of the train:

\(f_b = f_s\dfrac{(v + v_o)}{(v + v_s)}\)

where \(f_b\) is the beat frequency, \(f_s\) is the horn frequency, v is the speed of sound, \(v_o\) is the observer's speed, and \(v_s\) is the speed of the source.

We know that \(f_s\) = 410 Hz and \(f_b\) = 35 Hz. The speed of sound in air at standard temperature and pressure is approximately 343 m/s. Since the observer is stationary, \(v_o\) = 0.

Solving for \(v_s\), we get:

\(v_s = \dfrac{(f_s + f_b)}{f_s - 1} \times v\)

\(v_s\) = ((410 Hz + 35 Hz) / 410 Hz - 1) * 343 m/s

\(v_s\) = 33.5 m/s

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Some of the more striking cinematic moments in the moonlight are accomplished with alternating points-of-view shots involving the direct gaze of each character into the camera.

Visual editing puts footage together in a clean linear flow of non-stop action. This style of editing attempts to maintain a continuous sense of time and space. A wipe is when a shot replaces another shot from a certain direction or from a certain shape. To lengthen various takes so that the screen duration of a scene is longer than the intended duration of the event.

Crosscutting is a video editing technique that switches back and forth between scenes, often giving the impression that the action is happening in different places at the same moment. A film transition is a technique used in the post-production process of film editing and video editing by which scenes or shots are combined. Most commonly this is through a normal cut to the next shot.

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Answer:

42m/s

6.06s

Explanation:

To find the initial velocity and time in which the ball is fling over the ground you use the following formulas:

\(x_{max}=\frac{v_o^2sin(2\theta)}{g}\\\\x_{max}=vt_{max}\)

θ: angle = 45°

vo: initial velocity

g: gravitational constant = 9.8m/s^2

x_max: max distance = 180 m

t_max: max time

by replacing the values of the parameters and do vo the subject of the first formula you obtain:

\(v_o=\sqrt{\frac{gx_{max}}{sin(2\theta)}}\\\\v_o=\sqrt{\frac{(9.8m/s^2)(180m)}{sin(2(45\°))}}=42\frac{m}{s}\)

with this value of vo you calculate the max time:

\(t_{max}=\frac{x_{max}}{v}=\frac{x_{max}}{v_ocos(45\°)}\\\\t_{max}=\frac{180m}{(42m/s)cos(45\°)}=6.06s\)

hence, the initial velocity of the ball is 42m/s and the time in which the ball is in the air is 6.06s

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TRANSLATION:

Para encontrar la velocidad inicial y el tiempo en el que la pelota está volando sobre el suelo, use las siguientes fórmulas:

θ: ángulo = 45 °

vo: velocidad inicial

g: constante gravitacional = 9.8m / s ^ 2

x_max: distancia máxima = 180 m

t_max: tiempo máximo

reemplazando los valores de los parámetros y haciendo el tema de la primera fórmula que obtiene:

con este valor de vo usted calcula el tiempo máximo:

por lo tanto, la velocidad inicial de la pelota es de 42 m / sy el tiempo en que la pelota está en el aire es de 6.06 s

We can see here that yes, the death spiral is a challenging element in pairs figure skating competition. It requires the female skater to have excellent balance and flexibility, and the male skater to have strong upper body strength and control.

Skating refers to the act of gliding or moving on a smooth surface using skates.

In a death spiral, the male skater holds onto the hand of the female skater as she leans backward and extends her free leg horizontally. The male skater then rotates around her while she maintains her balance on one skate. This creates a spiral-like movement as they glide across the ice.

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Answer:

The amount of gravitational force INCREASES as the distance between two objects increases; thus, an astronauts weight DECREASES as she or he moves away from earth into space.

hope this helped.

The statement that describes the magnetic field inside a bar magnet is as follows: it points from north to south.

A bar magnet is a permanent magnet of rectangular shape.

A magnet generally possess a magnetic field, which is a condition in the space around a magnet which there is a detectable magnetic force and the presence of two magnetic poles.

A bar magnet like every other magnet possesses a magnetic field that points from the north pole to the south pole.

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Answer:

A physical property is a characteristic of matter that is not associated with a change in its chemical composition.

Explanation:

A physical property is a characteristic of matter that is not associated with a change in its chemical composition. Familiar examples of physical properties include density, color, hardness, melting and boiling points, and electrical conductivity.

hope it helps! Have a fantastic day!

Answer: Physical properties include density, color, hardness, melting and boiling points, and electrical conductivity.

Explanation: Pretty self explanatory I think but I hope it helped.

The distance from the base of the cliff is 13.67 m.

The impact velocity of the block when it falls off the cliff is 15.3 m/s.

Initial velocity of the block, u = 15 m/s

Mass of the block, m = 5 kg

Coefficient of friction, μ = 0.3

Height of the cliff, h = 12 m

μmg = ma

a = μg

a = 0.3 x 9.8

a = 2.94 m/s²

At the initial surface,

Total energy of the block = 1/2mu² - mgh'

E = m(u²/2 - gh)

E = 5(15²/2 - 9.8 x 5)

E = 5 x 63.5

E = 317.5J

The impact velocity of the block when it falls off the cliff is given by,

1/2 mv² = mgh

v = √2gh

v = √(2 x 9.8 x 12)

v = √235.2

v = 15.3 m/s

The distance from the base of the cliff is given by,

R = v√(2h/g)

R = 15.3 x√(2 x 13/9.8)

R = 15.3 x 1.628

R = 13.67 m

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When a south pole of one magnet is placed close to the north pole of another magnet, they attract, according to the rule of attraction of magnets. When a north pole of one magnet is brought close to the north pole of another magnet, they repel, according to the rule of magnet repulsion.

Therefore , moving two magnets in close proximity to one another causes them to either attract or repel one another. Magnets' opposing poles attract one another while their comparable poles repel one another when they are drawn in the same direction. Depending on which way the magnets' poles are facing one another, they will either attract or repel one another.

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Answer:

decrease

Explanation:

because it’s going to 180 meaning it’s becoming equal to the other and they cancel out