What is the vertical motion of an object?

The solution of the magnitude of tyhe net electrical force is given as 3.8 x 10 ^-2 N

C is equal to sqrt(AB2 + BC2) =

sqrt((0.01)2 + (0.03)2 = 0.032 m.

Theta equals

tan^-1(1/3) = 18.42.

F1 = force by charge at A = k Q (15 x 10⁹)/AC² = (9 x 109)(90 x 10⁹)(15 x 10⁻⁹)/(0.032)2 = 0.012 N

F2 = force by charge at B = k Q (5 x 10⁻⁹) /CD²= (9 x 10⁹) (90 x 10⁹), (5 x 10⁹)7(0.01)² = 0.041 N

The value of the net force in the X-direction is

Fx = - F1 Cos18.42 = - (0.012)  Cos18.42 = - 0.012 N

The value of the net force in the Y-direction is

Fy = F1 Sin18.42 - F2 =

= (0.012) Sin18.42 - 0.041 = - 0.037 N

The net force is stated as

\(\sqrt{-0.012^{2}+(- 0.037)^2 } \\= 3.8 * 10^-^2\)

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Answer:

the correct one is F’= 4500 N

Explanation:

To solve this problem we must use Newton's second law

where F₁ is the force of the barge F₁ = 3000N and the force of the tugboat is F '

            F '- F₁ = m a

we substitute

            F '- 3000 = m a

the mass is always a positive quantity, therefore if we want the tug to pull the barge

            F ’-3000> 0

when you check it, you respect the correct one is F’= 4500 N

Answer:

The answer is -4500 N

Explanation:

I just got it right on the test

To determine the velocity at which a 300 W motor will pull a mass when applying a force of 13.9 N, we need to consider the relationship between power, force, and velocity.

Power (P) is defined as the rate at which work is done or energy is transferred. It can be calculated using the formula:

P = F * v,

where P is power, F is force, and v is velocity.

Given that the power of the motor is 300 W and the force applied is 13.9 N, we can rearrange the formula to solve for velocity:

v = P / F.

Substituting the given values, we have:

v = 300 W / 13.9 N.

Calculating this expression gives us the velocity at which the motor will pull the mass.

v = 21.58 m/s.

Therefore, the velocity at which the 300 W motor will pull the mass when applying a force of 13.9 N is approximately 21.58 m/s.

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Answer:

Please find attached, the required wave drawn with MS Excel

Explanation:

Functions that represent waves is given as follows

A general form of the wave equation is A·sin(B·x) + D

Where;

B = 2·π/T

T = The period of the wave = 1/f

D = The vertical shift of the wave = 0

A = The amplitude of the wave = 1 for sine wave

v = The wave velocity

λ = The wavelength of the wave

f = The frequency of the wave

v = f·λ

At constant v, λ ∝ 1/f  

∴ λ ∝ T

Where T = 3, we have;

B = 2·π/T

∴ B = 2·π/3

Therefore, we have the wave with an amplitude of 1 cm, and wavelength, 3 cm, given as follows

y = sin((2·π/3)·x)

Plotting the above wave with MS Excel, we can get the attached wave

Answer:

yes

Explanation:

Answer:

Answer:

304

Explanation:Answer:

To determine the volume of a sample of strontium with a given mass, we can use the formula:

Volume = Mass / Density

Given:

Density of strontium (d) = 2.60 g/cm^3

Mass of the sample = 47.2 pounds

Before we proceed, let's convert the mass from pounds to grams, as the density is given in grams per cubic centimeter (g/cm^3).

1 pound is approximately equal to 453.592 grams.

Mass of the sample in grams = 47.2 pounds * 453.592 grams/pound

Now, we can calculate the volume using the formula:

Volume = Mass / Density

Volume = (47.2 * 453.592) / 2.60

By performing the calculations, we can determine the volume of the strontium sample in cubic centimeters.

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Answer:

A) the one with the lower boiling point.

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If the electroscope's leaves separate, it means that the object placed close to the electroscope has a charge, whether positive or negative.

When an electrified stimulus is in proximity to a neutral electroscope, the resulting charges from the stimulus will initiate a polarization of charge in the electroscope's leaves. The leaves will elicit identical electrostatic charge to that of the object and consequently experience repulsive forces, thereby leading to their displacement in opposite directions.

Hence, drawing upon the discernible oscillation of the leaves of the electroscope as evidence, it follows that the object in question possesses an electrical charge. To ascertain the polarity of said charge, additional experimentation or observation is requisite.

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Answer:

A wave that transmits speech, music, and other signals

Explanation:

Hope it helps

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Answer:

a wave that transmits speech, music, and other signals :)

Explanation:

The phase difference between the two points is

Δϕ = (2π/λ) * l

The phase difference (Δϕ) between two points in a wave can be calculated using the formula

Δϕ = (2π/λ) * Δx

Where

Δϕ is the phase difference in radians.

λ is the wavelength of the wave.

Δx is the distance between the two points.

In this case, the distance between the two points in space is given as l, and the wavelength of the wave is λ.

Therefore, the phase difference between the two points is

Δϕ = (2π/λ) * l

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When the temperature of a gas increases, the effect of interparticle interactions on gas behavior is decreased. This is because higher temperatures result in increased kinetic energy of the gas particles, leading to more vigorous motion and collisions between particles.

Interparticle interactions in gases are primarily governed by attractive and repulsive forces between the gas molecules. At lower temperatures, these interparticle forces play a significant role in determining gas behavior, such as particle clustering, condensation, and deviations from ideal gas behavior.

However, as temperature increases, the kinetic energy of the gas particles overcomes the interparticle forces more effectively. The increased thermal energy causes the gas particles to move with greater speed and collide more frequently and forcefully. These collisions disrupt the influence of interparticle forces, leading to decreased interactions and a reduced impact on gas behavior.

At high temperatures, the gas molecules possess sufficient kinetic energy to overcome or weaken the intermolecular forces, allowing the gas to behave more closely to an ideal gas. The gas becomes more likely to exhibit properties such as uniformity, random motion, and adherence to gas laws, as the effects of interparticle interactions diminish.

In summary, as temperature increases, the increased kinetic energy of gas particles weakens the influence of interparticle interactions, resulting in a decreased impact on gas behavior.

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Answer:

A black hole is a region of spacetime where gravity is so strong that nothing—no particles or even electromagnetic radiation such as light—can escape from it. The theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole.

The total number of electrons that can occupy an f sublevel is 14. An f orbital sublevel can accommodate a maximum of 14 electrons.

In the quantum mechanical model of the atom, orbitals are defined by a set of quantum numbers, including the azimuthal quantum number (l).

The l value for f orbitals is 3, which indicates that there are seven possible orientations for the f sublevel. Each orientation can hold two electrons, with their spins paired according to the Pauli exclusion principle.

Therefore, the total number of electrons that can occupy an f sublevel is 14. The f sublevel is part of the third energy level, which follows the s, p, and d sublevels.

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A simple compound microscope provides large magnification by employing a short focal length objective and a short focal length eyepiece.

A compound microscope is a high magnification microscope that uses two lenses to compound the level of magnification. The first lens is an objective lens and the second lens is an eyepiece lens.

In compound microscope both lenses are convex lenses. The objective lens has a very short focal length and hence has very high magnifying power (P ∝ 1/f ).

The image formed by the objective lens serves as the object to the eyepiece. The position of the eyepiece is kept such that the image formed by the objective lens is formed within the focal length of the eyepiece.

So, the focal length is short for eyepiece lens also.

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The magnitude of the electric field between the plates would be approximately 200 volts per small distance. The direction of the electric field vector is from the positively charged plate to the negatively charged plate.

The magnitude of the electric field vector between the plates is given by the formula E = (V1 - V2) / d, where V1 is the voltage of the first plate (200 volts), V2 is the voltage of the second plate (0 volts), and d is the distance between the plates. Assuming that the plates are close to each other, we can take d to be very small. Therefore, the magnitude of the electric field between the plates would be very large, approximately 200 volts per small distance. The direction of the electric field vector is from the positively charged plate (200 volts) to the negatively charged plate (0 volts), which is from the first plate towards the second plate.

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a) The pressure at 4.5 m below the surface is 19620 Pa.

(b) The pressure at 5.5 m below the surface is 9810 Pa.

c)  The closer spacing of the bands near the base ensures that the tower is strong enough to withstand the higher pressure.

The pressure at a certain depth in a liquid depends on the density of the liquid and the depth. The pressure at a point below the surface of a liquid can be found using the equation:

P = ρgh

where P is the pressure, ρ is the density of the liquid, g is the acceleration due to gravity, and h is the depth.

(a) The pressure at 4.5 m below the surface can be calculated as follows:

P = ρgh

P = (1000 kg/m³) × (9.81 m/s²) × (6.4 m - 4.5 m)

P = 19620 Pa

Therefore, the pressure at 4.5 m below the surface is 19620 Pa.

(b) The pressure at 5.5 m below the surface can be calculated as follows:

P = ρgh

P = (1000 kg/m³) × (9.81 m/s²) × (6.4 m - 5.5 m)

P = 9810 Pa

Therefore, the pressure at 5.5 m below the surface is 9810 Pa.

(c) The metal bands on the water storage tower are more closely spaced near the base of the tower because the pressure at the base is higher than at the top. The bands provide additional support to the tower, preventing it from collapsing due to the higher pressure at the base. The closer spacing of the bands near the base ensures that the tower is strong enough to withstand the higher pressure.

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The range of frequencies that the human body rf exposure is limited to is 30-300 MHz.

The most stringent limitations on whole-body exposure are in the frequency range of 30-300 MHz, where the human body absorbs RF energy most efficiently when exposed completely.

Radiofrequency (RF) radiation is at the low-energy end of the electromagnetic spectrum and comprises radio waves and microwaves. It is classified as non-ionizing radiation. Non-ionizing radiation lacks the energy required to remove electrons from an atom.

The RF radiation are not a good thing for the human body, we should restrict our body from the exposure to these harmful radiation.

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If an object with a mass of 100g has a weight of 1 N on Earth, the volume of water displaced by the object​ is 100 cm³.

To find the volume of water displaced by the object, take the formula:

Volume = Mass ÷ Density

According to question:

Mass of the object = 100g

Density of water = 1g/cm³

Change the mass to kilograms:

Mass = 100g ÷ 1000 = 0.1kg

By using the formula, it is possible to find the volume of water displaced:

Volume = 0.1kg / 1g/cm³

= 0.1kg / 1g/cm³ × 1000g/1kg × 1cm³/1g

= 0.1 × 1000 cm³

= 100 cm³

Thus, the volume of water displaced by the object​ is 100 cm³.

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Answer:

the catcher and outfielder

Explanation:

Answer: The catcher and the player at first base are the only players permitted to wear mitts rather than gloves. So, the answer would be 3.

Explanation: I had this on a quiz and got it right.

Hope this helps!

The number of paperclips the magnet will pick when held at 15 cm away is 2 paperclips

Thus, as the distance increase, the amount of paper clips the magnet will pick will reduce. This is illustrated below

p ∝ 1 / d

p = K / d

Cross multiply

pd = constant

p₁d₁ = p₂d₂

p₁d₁ = p₂d₂

3 × 10 = p₂ × 15

30 = p₂ × 15

Divide both side by 15

p₂ = 30 / 15

p₂ = 2

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The question addresses the stability of the atmosphere and the factors that determine convective stability or instability. It also explains the difference between the adiabatic lapse rate of dry air and wet saturated air.

a) The stability of the atmosphere is determined by the temperature profile and relative densities of the air cell and atmosphere. If the temperature of the surrounding atmosphere decreases with altitude at a rate greater than the adiabatic lapse rate of the air cell, the atmosphere is considered convectively stable.

In this case, the air cell will return to its original position. Conversely, if the temperature of the surrounding atmosphere decreases slower than the adiabatic lapse rate of the air cell, the atmosphere is convectively unstable. The air cell will continue moving in the same direction.

b) The adiabatic lapse rate refers to the rate at which temperature decreases with altitude for a parcel of air lifted or descending adiabatically (without exchanging heat with its surroundings). The adiabatic lapse rate of dry air is higher (around \(9.8^0C\) per kilometer) compared to the adiabatic lapse rate of wet saturated air (around 5°C per kilometer).

This difference arises because when water vapor condenses during the ascent of saturated air, latent heat is released, reducing the rate of temperature decrease. A diagram can illustrate the difference between the two lapse rates, showcasing their respective slopes.

c) When wet unsaturated air rises from the ocean surface, its temperature decreases at a rate equal to the dry adiabatic lapse rate. However, if the ambient lapse rate (temperature decrease with altitude) is higher than the adiabatic lapse rate for dry air, a temperature inversion layer forms at higher altitudes.

In this inversion layer, the temperature increases with altitude instead of decreasing. A schematic diagram can depict the temperature changes of the wet air in comparison to the ambient temperature, showing the inversion layer.

Cumulus clouds form at the altitude where the rising moist air reaches the level of the temperature inversion layer. These clouds are formed due to the condensation of water vapor as the air parcel cools to its dew point temperature.

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Answer:KE

Explanation:

Answer:

B. Luminosity

Explanation:

The luminosity of a star is a measure of its brightness.

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The current in amperes going through this resistor is 0.005208 Amperes or 5.208 mA.

Ohm's law is one of the most fundamental laws of electrical engineering. It states that the current flowing through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance between them. Mathematically, the relationship is given by the equation: I = V / R, where I is the current in amperes, V is the voltage in volts, and R is the resistance in ohms.

In our example, we are given a resistor with a resistance of 960 ohms and a potential difference (voltage) of 4.98 volts across its two terminals. We need to divide the voltage by the resistance to find the current flowing through the resistor. Using the equation I = V / R, we have: I = 4.98 volts / 960 ohms = 0.005208 Amperes or 5.208 milliamperes.

So, the current flowing through the 960-ohm resistor is 5.208 milliamperes.

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Answer:

neutron

Explanation:

This means that the roller coaster is decelerating at a rate of 8m/s² until it comes to a complete stop.

Decelerating is the process of slowing down or decreasing the speed of a vehicle, person, or object. It is the opposite of accelerating, which is the process of increasing speed. Deceleration can be caused by the force of friction from the road or other surfaces, or by reducing the amount of engine power or braking. Deceleration is necessary to safely slow down and stop a vehicle and to negotiate turns or curves in the road.

The acceleration of the roller coaster can be calculated using the equation
a = (Vf - Vi)/t, where Vf is the final velocity, Vi is the initial velocity, and t is the time taken for the change in velocity to occur.
In this case, Vf = 0m/hr, Vi = 80m/hr, and t = 10s.
Therefore, the acceleration of the roller coaster is -8m/s².
This means that the roller coaster is decelerating at a rate of 8m/s² until it comes to a complete stop.

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Answer:

10.2 m/s

Explanation:

Using conservation of energy:

PE = KE

mgh = ½ mv²

v = √(2gh)

v = √(2 × 9.8 m/s² × 28.0 m × sin 11.0°)

v = 10.2 m/s

The velocity when car reaches the bottom of the hill is 10.2 m/s.

The mechanical energy is the sum of kinetic energy and the potential energy of an object at any instant of time.

M.E = KE +PE

M.E = ½ mv² + mgh

where g is the acceleration due to gravity, v is the velocity, m is the mass and h is the height of the object.

Given is a 1380 kg car starts from rest at the top of a 28.0 m long hill inclined at 11.00 degrees.

Using conservation of energy principle, we have

PE = KE

mgh = ½ mv²

v = √(2gh)

Substitute the values, we get

v = √(2 × 9.8 m/s² × 28.0 m × sin 11.0°)

v = 10.2 m/s

Thus, the velocity when car reaches the bottom of the hill is 10.2 m/s.

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Answer:

d

Explanation:

I looked it up for you to help you out and it said it was d

Answer:

The correct answer is D. We served cake to children in silver bowls.