a moving charged particle is observed to experience no magnetic force. from this what conclusion can be true?

Answer:

A i tooook theee quizzz too

Answer:

an atom has 8 electrons

Explanation:

D. Two substances must combine chemically.

One type of atom makes up an element, which is a white crystalline solid that cannot be divided into more than one component. Compounds are pure substances created by mixing two or more substances in a specific mass ratio.

Chemically pure substances that can be found in nature are called elements and compounds. An component is an object made of the same kinds of atoms as a compound, which is how they differ from one another.

It is common for the disorder to develop and the entropy of the system to increase as a result of the dispersion of molecules, atoms, and ions of one sort during the creation of a solution throughout a second substance.

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Answer:

2. Repulsion

Explanation:

number two is the answer

Answer:

Repulsion is the surest test which confirms that the given piece of the object is a magnet.

........

Answer:

she saw it in a movie

Explanation:

she said her mom and her saw it in Step up 3 and fell in love

50.545 degrees with a positive x-axis and a weight of 133.909 pounds. the direction and strength of these forces' combined effect

A modest but significant amount of a certain characteristic is present in anything if it has a degree of that attribute. However, their salaries do provide them some freedom. There is some cause for cautious optimism.

Degree (Celsius) (Celsius) Temperature readings are frequently made in degrees Celsius. Degrees Celsius are denoted by the sign °C. By designating 0°C as the freezing point of water and 100°C as its boiling point, the Celsius scale is produced.

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the second and third one

The spring be stretched is 43.478.

Springs also have elastic limits. If you stretch the spring too much it will not return to its original position. Permanently deformed. Stretchable materials return to their original length when stretched or contracted. According to Hooke's Law, when a spring is stretched, the applied force is proportional to the stretch from its equilibrium length.

calculation:-

k=2.3 n/m

mass = 10 Kg

10m x 10g = 100N / 2.3

= 43.478.

To calculate the inner diameter D inner you must multiply the wire diameter by 2 and subtract the result from the outer diameter D outer. To calculate the outer diameter do the reverse procedure. Multiply the wire diameter by 2 and add the result to the inner diameter. To stretch the coil, the steel must be stretched beyond its yield point. This weakens the spring causing it to return to its original height and slowly decrease in height.

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Answer:

a

Explanation:an example An astronaut in space has the same mass as he does on earth while having different ... Newton's Second Law of Motion: Force = mass x acceleration ... Push less to move it (use less force.) ... Gravity has an effect on an object in the vertical direction only.

Answer:

it is a greater

Explanation:

hope it helps

The centripetal force experienced by the towel is 55 N.

The given parameters;

The centripetal force experienced by the towel spinning along the walls of the drum is calculated as follows;

Fc = mrω²

where;

Fc is the centripetal force

ω is angular speed in rad/s

The angular speed in rad/s is calculate as;

\(\omega = \frac{200 \ rev}{\min} \times \frac{2\pi \ rad}{1 \ rev} \times \frac{1\min}{60 \ s} \\\\\omega = 20.95 \ rad/s\)

The centripetal force experienced by the towel is calculated as;

\(F_c = mr\omega ^2\\\\F_c = 0.25 \times 0.5 \times (20.95)^2\\\\F_c = 54.9 \ N \ \approx 55 \ N\)

Thus, the centripetal force experienced by the towel is 55 N.

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\(B_{max\) for the light at a distance of 6.80 mm from the source is \(1.45 \times 10^{-4} T\).

Distance is a numerical measurement of how far apart two objects or points are in space. It is a scalar quantity, which means it is only concerned with magnitude and not direction. It is typically measured in units of length such as feet, miles, meters, kilometers, or even light-years. Distance can be used to measure the length of a journey, the size of an object, or the time it takes to travel from one location to another. It can also be used to calculate speed, acceleration, or force.

\(B_{max} = P/(4\pi d^2c)\)
Where P is the power output of the light source (59.0 WW), d is the distance from the source (6.80 mm), and c is the speed of light (299,792,458 m/s).
\(B_{max} = (59.0 WW)/(4\pi(6.80 mm)^2(299,792,458 m/s))\\B_{max} = 1.45 \times 10^{-4} T.\)

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Answer:

Trial 1 is the largest, trial 3 is the smallest

Explanation:

Given:

Trial 1

M₁ = 6·10²² kg

d₁ = 3 500 km = 3.5·10⁶ м

Trial  2

M₂ = 6·10²² kg

d₂ = 7 000 km = 7·10⁶ м

Trial  3

M₃ = 3·10²² kg

d₃ = 7 000 km = 7·10⁶ м

___________

F - ?

Gravitational force:

F₁ = G·m·M₁ / d₁² = m·6.67·10⁻¹¹·6·10²² / (3.5·10⁶)² = 0.37·m  (N)

F₂ = G·m·M₂ / d₂² = m·6.67·10⁻¹¹·6·10²² / (7·10⁶)² = 0.08·m  (N)

F₃ = G·m·M₃ / d₃² = m·6.67·10⁻¹¹·3·10²² / (7·10⁶)² = 0.04·m  (N)

Trial 1 is the largest, trial 3 is the smallest

The power is generated by the machine that lifts the 50 kg box a

distance of 15 m in 8 seconds is 918.75 W (2nd option)

We'll begin by obtaining the work done by the machine in lifting the box. Details below:

Wd = mgh

Wd = 50 × 9.8 × 15

Wd = 7350 J

Finally, we shall determine the power generated. Details below:

P = Wd / t

P = 7350 / 8

P = 918.75 W

Thus, the power generated is 918.75 W (2nd option)

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As a result, the net pressures on the automobile and truck are zero.

what is pressure ?

If you tried to smash a bowling pin into the wall, nothing would happen except that people would stop lending you bowling pins. If you used the same force to hammer a nail, the nail would be far more likely to pierce the wall. This demonstrates that knowing the quantity of the force isn't always enough: you also need to know how that force is distributed over the impact surface. The nail condensed all of the power between the wall and the nail into a relatively tiny region on the pointed tip of the nail. However, because the area of the bowling pin that touched the wall was significantly bigger, the force was much less focused.

Newton's Second Law states that the net Force acting on an object is given by

MA Fnet = MA

The acceleration is given by the ratio of the change in velocity of an object and the time it takes to change velocity.

(Vf - Vi)/T = a

If the vehicles are driving at constant speeds, their velocity change is zero (0).

If the velocity change is zero, the acceleration is also zero (0).

As a result, Fnet = M(0) = 0.

As a result, the net pressures on the automobile and truck are zero.

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The distance between the two objects is 1.5 cm.

To calculate the distance between the two objects, we use the formula obtained from Columb's law

Columb's law states that the force of attraction or repulsion between two charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them.

Formula:

Where:

Make r the subject of the equation

From the question,

Given:

Substitute these values into equation 2

Hence, The distance between the two objects is 1.5 cm.

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Answer:

2min

Explanation:

i think it will be clear from photo

Answer: The formula for current is charge/time

so here we have to change subject so we are asked to look for time  

Explanation: so it would be T=Q/I

T=4/2

T=2s

hope this helpss

Given :

A 1200 kg truck traveling at 20 m/s towards the east.

To Find :

The magnitude and direction of the momentum.

Solution :

We know, momentum is given by :

Momentum, P = mv

P = 1200 × 20 kg m/s

P = 24000 kg m/s

Now, we know, direction of momentum is same as the direction of velocity.

Therefore, momentum of truck is 24000 kg m/s and direction is towards the east.

The Conditions Young's double slit experiment uses two coherent sources of light placed at a small distance apart. Usually, only a few orders of magnitude greater than the wavelength of light are used. Young's double slit experiment helped in understanding the wave theory of light.

The double-slit experiment demonstrates that light and matter may exhibit both conventionally defined waves and particles; moreover, it demonstrates the inherently probabilistic nature of quantum mechanical events. Thomas Young initially performed this sort of experiment in 1801, as proof of visible light's wave behavior.

The Light was assumed to be made up of either waves or particles at the time. Around a hundred years later, at the dawn of modern physics, it was discovered that light could indeed exhibit wave-like and particle-like behavior.

If the light source is not coherent or monochromatic, the fringes will be blurred and there will be no interference pattern.

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Answer: The energy to move the fluid is provided by the pressure on the fluid surface.

Explanation:  The frictional losses in the suction pipework and rises in the suction pipework system will reduce the fluid pressure at the pump inlet. If the pump inlet connection is removed the fluid will not flow out of the suction pipework. Hope this helps! :)

Is for Carnot engine to have an efficiency of 1, i.e.  100 %, either T2 (temperature of the sink) should be zero or T1 (temperature of the source) should be infinite.

There is no perfect source since it is impossible to achieve 100% efficiency because a portion of the heat from the source must be used to overcome resistance from the environment and other forces.

The efficiency of a steam generator cannot be 100% since it is impossible to reach absolute zero or infinite temperatures in real life.

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The train's acceleration is -8.8 mph/s. We are given that a train is traveling at 30 miles per hour south and takes 12 minutes to come to a stop.In order to determine the acceleration of the train, we can use the following kinematic equation:vf = vi + atwherevf is the final velocity of the train (0 mph, since it comes to a stop)vi

The initial velocity of the train (30 mph, to the south)a is the acceleration of the train (what we're trying to find out)t is the time it takes for the train to come to a stop (12 minutes = 0.2 hours)Substituting the given values into the equation and solving for a:0 mph = 30 mph + a(0.2 hours)0 = 30 + 0.2aa = -150/17 mph/sa = -8.8 mph/s

Therefore, the train's acceleration is -8.8 mph/s. Note that the negative sign indicates that the train is slowing down.

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Answer:

the 70kg man

Explanation:

because he has more weight and is moving faster

"The proper way to name the range of cells located in column A row 3 through column C row 7 is A3:C7."

Each worksheet is composed of countless cells, which are rectangular shapes. A cell is the place where a row and a column meet, or the intersection of a row and a column.

A, B, and C are used to identify columns, while digits are used to identify rows (1, 2, 3). Based on its column and row, each cell has a unique name or cell address. The cell address in the example below is C5, because the chosen cell intersects column C and row 5.

Additionally, it is possible to select many cells at once. A cell range is a collection of cells. You will refer to a cell range using the cell addresses of the first and last cells in the range, separated by a colon, rather than a single cell address. Cells A1, A2, A3, A4, and A5 would be included in the range represented by the letters A1:A5.

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The magnification of the microscope is approximately 1.67.

The **magnification** of a microscope can be determined by the combination of the object lens and the eyepiece, while the **spatial resolution** relates to the ability of the microscope to distinguish fine details.

To calculate the magnification, we can use the formula:

Magnification = (focal length of object lens) / (focal length of eyepiece)

Substituting the given values:

Magnification = 2.5 cm / 1.50 cm

Magnification ≈ 1.67

Therefore, the magnification of the microscope is approximately 1.67.

The spatial resolution of a microscope depends on factors such as the wavelength of light used and the numerical aperture of the objective lens. However, the given information does not provide these specific details to calculate the spatial resolution accurately. In general, the spatial resolution is determined by the smallest resolvable detail, which is usually defined as the distance between two distinct points that can be observed as separate entities. To achieve higher spatial resolution, microscopes with shorter wavelengths of light and higher numerical apertures are typically used.

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As n is not an integer, so there will be no constructive interference between the speakers, if speaker A is moved by minimum distance.

Interference is a phenomenon in which two waves combine by adding  displacement together at every single point in space and time and to form a resultant wave of greater, lower, or same amplitude.

Wavelength of a 500 Hz sound wave is the speed of sound (about 343 m/s) divided by the frequency of the sound, which is 343/500 m = 0.686 m. Therefore, minimum distance you can move speaker A to achieve constructive interference along x-axis is 0.686/2 m = 0.343 m.

Given, distance between the speakers is 6m. Constructive interference will occur when path difference between two waves is equal to integer multiple of the wavelength. To achieve constructive interference, distance between the speakers + the distance moved by speaker A should be equal to n*wavelength where n is integer.

So, 6 + 0.343 = n* 0.686

n = (6+0.343)/0.686 = 8.8

As n is not an integer, so there will be no constructive interference between the speakers, if speaker A is moved by minimum distance.

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The pressure at the bottom of the column is determined as 94,080 Pa.

The hydrostatic pressure of the water column is pressure exerted due to the vertical column of water and it can be calculated by applying the following formula.

Mathematically, hydrostatic pressure is given as;

P = ρgh

where;

The given parameters include the following;

Substitute the above parameters and solve for the pressure exerted by the water column.

P = 1000 x 9.8 x 9.6

P = 94,080 Pa

Thus, the pressure exerted by the column of the water depends on the depth of the water or water column.

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Answer:

2892.31 N

Explanation:

Applying,

P = F×v................ Equation 1

Where P = power of the motor, F = Weight of the load the motor can lift, v = velocity

make F the subject of the equation

F = P/v.............. Equation 2

Given: P = 188 W, v = 0.065 m/s

Substitute into eequation 2

F = 188/0.065

F = 2892.31 N

Hence the weight of the load is 2892.31 N

Answer:

Explanation:

To calculate the present worth of each option, we need to consider the cost of the insulation, the heat loss savings, and the required return rate.

1.  No insulation:

The cost of heat loss per foot of pipe without insulation is $1.00 per year.

The present worth of heat loss for no insulation over 10 years can be calculated as follows:

Present Worth = Cost of heat loss per year * Number of feet of pipe * Present worth factor for 10 years at 9% return rate

Present Worth = $1.00/ft/year * 255,000 ft * Present worth factor for 10 years at 9% return rate

2.  1-inch insulation:

The cost of 1-inch insulation per foot of pipe is $0.35.

The heat loss reduction with 1-inch insulation is 75%, which means only 25% of the original heat loss remains.

The present worth of heat loss for 1-inch insulation over 10 years can be calculated as follows:

Present Worth = Cost of heat loss per year * Number of feet of pipe * Heat loss reduction * Present worth factor for 10 years at 9% return rate

Present Worth = ($1.00/ft/year * 255,000 ft * 0.25) + ($0.35/ft * 255,000 ft * Present worth factor for 10 years at 9% return rate)

3.  2-inch insulation:

The cost of 2-inch insulation per foot of pipe is $0.80.

The heat loss reduction with 2-inch insulation is 92%, which means only 8% of the original heat loss remains.

The present worth of heat loss for 2-inch insulation over 10 years can be calculated as follows:

Present Worth = Cost of heat loss per year * Number of feet of pipe * Heat loss reduction * Present worth factor for 10 years at 9% return rate

Present Worth = ($1.00/ft/year * 255,000 ft * 0.08) + ($0.80/ft * 255,000 ft * Present worth factor for 10 years at 9% return rate)

To calculate the present worth factors at a 9% return rate, you can use a TVM (Time Value of Money) calculator or refer to a TVM factor table.

Once you calculate these values, you will have the present worth of each option: no insulation, 1-inch insulation, and 2-inch insulation.