Question 11 of 21
A wave with a wavelength of 4.0 m moves with a speed of 2.0 m/s. What is
the frequency of the wave?
A. 2.0 Hz
OB. 0.5 Hz
C. 6.0 Hz
D. 8.0 Hz

The ions are;

S^2- Gained 2 electrons

Li^+ - Lost one electron

Al^3+ - Lost 3 electrons

Cl^- gained one electron

Sr^2+ Lost two electrons

P^3- gained 3 electrons

As an atom or molecule acquires or loses one or more electrons, ions are created. Protons and neutrons make up the positively charged nucleus of an atom, which is encircled by negatively charged electrons. An atom typically has a neutral charge because the amount of electrons and protons in it equals one.

The balance between the negatively charged electrons and positively charged protons is upset when an atom receives or loses an electron, creating an ion with a positive or negative charge.

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The mass spectrometer separates ions of different masses by utilizing the relationship between the strength of the magnetic field, the accelerating voltage, the charge-to-mass ratio of the ions, and the resulting radius of the circular path

From the formula in the question;

B is a symbol for the magnetic field's intensity as it is applied to the mass spectrometer.

The accelerating voltage used to move the ions is called Vaccelm.

The charge of the ion, specifically its charge-to-mass ratio (q/m), is represented by the letter q.

The mass spectrometer may selectively alter the radius of the circular route for various ions by varying the magnetic field's intensity (B). This makes it possible to spatially segregate ions with various masses based on their various radii. The ions' locations and masses can then be measured using detectors placed along the journey.

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The balanced equation illustrates the Law of Conservation of Mass as the mass of the products must be equal to the mass of the reactants.

The law of conservation of mass is always obeyed by a chemical equation that is balanced. This law states that the mass of the products must be equal to the mass of the reactants in order for the law to be valid. It is possible to determine whether or not a reaction is balanced by determining whether or not the number of moles of atoms across both ends of the chemical process is equivalent. If the number of moles is the same on both sides the total mass will also be the same.

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The work done on the mouse by air resistance is equal to 196 Joules.

Given the following data:

Mass = 200 grams to kg = 0.2 kg.

Distance = 100 meters.

Scientific data:

Acceleration due to gravity = 9.8 \(m/s^2\)

In Science, work done is generally calculated by multiplying force and the vertical distance or displacement experienced by an object.

Mathematically, work done is given by the formula:

\(Work\;done = force \times displacement = mgh\)

Substituting the given parameters into the formula, we have;

\(Work\;done = 0.2 \times 9.8 \times 100\)

Work done = 196 Joules.

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Answer:

Exposing the testicles to high temperatures could lead to problems

    with producing sperm.

Explanation:

got it correct on the edge unit test review

Brent's doctor most likely recommended that he avoid hot baths because exposing the testicles to high temperatures could lead to problems with producing sperm.

The sperm is the male reproductive cell that is produced in the testes and stored in the epididymis.

The testicles (testes) of the male is located outside the body as the temperature of the body is too high for the viability of the sperm.

Therefore, exposing the testicles to high temperatures could lead to problems with producing sperm.

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The mower will travel approximately 0.62 meters before coming to a stop.

Velocity is a vector quantity that describes the rate of change of an object's position with respect to time, and it includes both the speed and direction of motion. In other words, velocity is a measure of how fast an object is moving and in what direction it is moving.

To find the force F exerted by the person on the mower, we must apply Newton's second law of motion, which states that an object's net force is equal to its mass multiplied by its acceleration:

F_net = m × a

where F_net is the net force, m is the mass of the object, and a is the acceleration.

In this case, the net external force is given as 52 N, and the force of friction opposing the motion is 18 N. So, the force F exerted by the person on the mower is:

F = F_net - F_friction

F = 52 N - 18 N

F = 34 N

Therefore, the person is exerting a force of 34 N on the mower.

Now, to find how far the mower will go before stopping, we can use the equation for constant acceleration:

d = (v_f² - v_i²) / (2a)

where d is the distance traveled, v_f is the final velocity (which is zero in this case), v_i is the initial velocity (1.5 m/s), and a is the acceleration.

The acceleration can be calculated by dividing the net force (F_net) by the mass of the mower (m):

a = F_net / m

a = 52 N / 30 kg

a = 1.73 m/s²

Now, we can plug in the values to get the distance traveled:

d = (0 - 1.5²) / (2 × 1.73)

d = 0.62 m

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My family car has a tank size of 19 gallons, and it is fueled twice a week at about 8 gallons each time. It's yearly carbon emission is about 16,254 pounds per year.

To estimate the weekly gasoline consumption, we multiply the number of refills (2) by the amount of gasoline added each time (8 gallons):

Therefore weekly gasoline consumption 2 refills/week at 8 gallons per refill = 16 gallons/week

c. The emission factor for carbon dioxide is approximately 19.55 pounds per gallon.

Therefore, to obtain the weekly emissions,

Multiply the weekly gasoline consumption 16 gallons by the emission factor of carbon dioxide 19.55 pounds per gallon.

Weekly carbon dioxide emissions is 16 gallons/week * 19.55 pounds/gallon

= 312.8 pounds/week

Monthly emissions: Multiply the weekly emissions 312.8 pounds by the number of weeks in a month approximately 4.35) to get the monthly carbon dioxide emissions

Monthly carbon dioxide emissions is 312.8 pounds per week * 4.35 weeks per month

≈ 1,359 pounds/month

Yearly emissions: Multiply the weekly emissions 312.8 pounds by the number of weeks in a year approximately 52 to get the yearly carbon dioxide emissions.

Yearly carbon dioxide emissions is 312.8 pounds per week * 52 weeks per year

≈ 16,254 pounds/year

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Two things that keep windows from shattering are the strength of the glass and the ability of the window frame to dampen vibrations.

The strength of the glass is important because it determines how much force the glass can withstand before it breaks. Modern windows are typically made of tempered glass, which is treated with heat to make it stronger and more resistant to shattering.

The ability of the window frame to dampen vibrations is also crucial because glass is prone to resonance, which is a phenomenon that occurs when an object is subjected to vibration at its natural frequency.

If the frequency of the vibration matches the natural frequency of the glass, the glass can begin to vibrate and eventually shatter. To prevent this, window frames are designed to be sturdy and to dampen vibrations, which helps to prevent the glass from vibrating and shattering.

In summary, both the strength of the glass and the ability of the window frame to dampen vibrations are important factors that help to prevent windows from shattering.

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The speed of the car in terms of the average velocity is \(\frac{v(a+ b) }{\sqrt{a^2 + b^2} }\)

The given parameters;

The average velocity of the car is defined as the rate of change of displacement.

\(average \ velocity = \frac{displacement}{time}\)

The displacement of the car along the rectangle is obtained by applying Pythagoras theorem to calculate the diagonal of the rectangle ;

c² = a² + b²

\(c = \sqrt{a^2 + b^2}\)

\(v= \frac{\sqrt{a^2 + b^2} }{t} \\\\t = \frac{\sqrt{a^2 + b^2} }{v}\)

The speed of the car is defined as the rate of change of distance.

\(speed = \frac{distance}{time}\)

The distance around the 2 sides of the rectangle is calculated as;

Distance =  a + b

\(speed = \frac{a+b}{t}\)

\(speed = \frac{v(a+ b)}{\sqrt{a^2 + b^2} }\)

Thus, the speed of the car is \(\frac{v(a+ b) }{\sqrt{a^2 + b^2} }\)

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To calculate the torque required to create an angular acceleration, we can use the formula:

Torque = Moment of Inertia × Angular Acceleration

The moment of inertia of a disk can be calculated using the formula:

Moment of Inertia = (1/2) × Mass × Radius^2

Given:

Mass = 15,000 kg

Radius = 6.14 m

Angular Acceleration = 0.0500 rad/s^2

First, calculate the moment of inertia:

Moment of Inertia = (1/2) × Mass × Radius^2

Moment of Inertia = (1/2) × 15,000 kg × (6.14 m)^2

Next, calculate the torque:

Torque = Moment of Inertia × Angular Acceleration

Torque = Moment of Inertia × 0.0500 rad/s^2

Now, let's plug in the values and calculate:

Moment of Inertia = (1/2) × 15,000 kg × (6.14 m)^2

Moment of Inertia ≈ 283,594.13 kg·m^2

Torque = 283,594.13 kg·m^2 × 0.0500 rad/s^2

Torque ≈ 14,179.71 N·m

Rounding to three significant figures, the torque required to create an angular acceleration of 0.0500 rad/s^2 is approximately 14,180 N·m.

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♥️ \(\large{\underline{\textcolor{red}{\mathcal{SUMIT\:\:ROY\:\:(:\:\:}}}}\)

 a. The function that describes the oscillations of the object can be described using a sinusoidal function.

b. Yes, the function is shifted in the x-direction.

c. No, the function is not squeezed or stretched along the y-axis.

d. No, the function is not squeezed or stretched along the x-direction. The equation describing the position of the object in time can be expressed as :x(t) = A * cos(ωt + φ)

e. x(0) = A * cos(ω * 0 + φ) = 2 is the equation describing position of the object in time.

a. The function that describes the oscillations of the object can be described using a sinusoidal function. A common function used to represent oscillatory motion is the cosine function or the sine function. In this case, since the object is in the equilibrium position at t=0 and t=2s, we can use the cosine function to describe its oscillations.

b. Yes, the function is shifted in the x-direction. The equilibrium position of the object is at x=2m, which means the function is shifted 2 units to the right along the x-axis.

c. No, the function is not squeezed or stretched along the y-axis. The amplitude of the oscillations remains constant at 0.2 m.

d. No, the function is not squeezed or stretched along the x-direction. The period of the oscillations remains constant, indicating that the function is not compressed or stretched along the x-axis.

The equation describing the position of the object in time can be expressed as follows:

x(t) = A * cos(ωt + φ)

Where:

- x(t) represents the position of the object at time t.

- A is the amplitude of the oscillations (0.2 m in this case).

- ω is the angular frequency, given by ω = 2π / T, where T is the period of oscillation.

- φ is the phase constant, representing the initial phase of the oscillation.

e. To determine the equation describing the position of the object in time, we need to find the values of ω and φ. Since the object is in the equilibrium position at t=0 and t=2s, we can use this information to determine the values.

At t=0, the object is in the equilibrium position, so we have:

x(0) = A * cos(0 + φ) = 2

At t=2s, the object is in the equilibrium position again, so we have:

x(2) = A * cos(2ω + φ) = 2

Now,

At t=0, we have:

x(0) = A * cos(ω * 0 + φ) = 2

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Answer:

Explanation:

F = k * q * lambda * R * π * (1 - √2/2)

Substituting the given values of q, lambda, R, and k, we get:

F = (9 x 10^9 N*m^2/C^2) * (20 x 10^-9 C) * (1 x 10^-6 C/m) * (0.1 m) * π * (1 - √2/2)

F ≈ 8.58 x 10^-4 N

Therefore, the force of interaction between the half ring and the point charge is approximately 8.58 x 10^-4 N.

Answer:

they are closer!!

Explanation:

Hope this helped!! :D

a. The speed of the tsunami at ocean depth of 8000 m is 1,019.66 km/h.

b. The speed of the tsunami at ocean depth of 3500 m is 660.75 km/h.

c. The speed of the tsunami at ocean depth of 70 m is 89.66 km/h.

d. The speed of the tsunami at ocean depth of 5 m is 30.625 km/h.

The speed of the tsunami is calculated from method of extrapolation or interpolation as shown below;

8000 m -------- ?

7000 m -------- 943 km/h

4000 m -------- 713 km/h

(8000 - 7000)/(7000 - 4000) = (? - 943)/(943 - 713)

0.3333 =  (? - 943)/230

230(0.3333) = ? - 943

76.66 = ? - 943

? = 1,019.66 km/h

4000 m ---------- 713 km/h

3500 m ---------- ?

2000 m ----------- 504 km/h

(4000 - 3500)/(4000 - 2000) = (713 - ?) / (713 - 504)

0.25 =  (713 - ?) /209

0.25(209) = 713 - ?

52.25 = 713 - ?

? = 660.75 km/h

200 m ------ 159 km/h

70 m --------- ?

50 m ------- 79 km/h

(200 - 70)/(200 - 50) = (159 - ?)/(159 - 79)

0.8667 = 159 - ? / 80

80(0.8667) = 159 - ?

69.336 = 159 - ?

? = 89.66 km/h

50 m ------- 79 km/h

10 m --------- 36 km/h

5 m ---------- ?

(50 - 5)/(50 - 10) = (79 - ?)/(79 - 36)

1.125 = 79 - ?/43

43(1.125) = 79 - ?

48.375 = 79 - ?

? = 30.625 km/h

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Answer:

I KNOW THE ANSWER IT WILL COST 30$

Explanation:

The steps/guidelines for preventing quackery and fraud when shopping are :

Quackery involves the claim of knowledge and provision of a fake and dishonest service to unsuspecting customers or clients and this is very common in medicine.

Fraud is the false representation of a material or service in order to cause loss of money or pain to an unsuspecting client or customer. some steps to prevent fraud are as follows :

Hence we can conclude that The steps/guidelines for preventing quackery and fraud when shopping are as listed above

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Answer:

the sum of all force being applied to an object.

Explanation:

This question involves the concepts of kinetic energy, potential energy, and the law of conservation of energy.

The watermelon is "1.02 m" above the ground.

The total energy of the watermelon can be found by its potential energy at the highest point:

Total Energy = mgh

where,

Therefore,

Total Energy = (118 kg)(9.81 m/s²)(5 m)

Total Energy = 5787.9 J

Now, according to the law of conservation of energy, at the given point:

Total Energy = Kinetic Energy + Potential Energy

5787.9 J = 4610 J + mgh'

\(h'=\frac{5787.9\ J-4610\ J}{(118\ kg)(9.81\ m/s^2)}\)

h' = 1.02 m

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The current in the circuit is 0.5 A..

Given data:

The voltage of the battery is V=12 V.

The resistances are,

The voltage of the battery is V=12 V.

The equivalent resistance of the given series connection of resistances can be calculated as,

Applying the Ohm's law to calculate the current in the circuit as,

Thus, the current in the circuit is 0.5 A.

Answer:

A = 21 î + 28 ĵ

B = 12 î + 5 ĵ

Explanation:

a.

To write A and B in terms of î and ĵ, we need to use the trigonometric ratios and the vector notation

According to the diagram, we have:

tan a = 4/3 tan ß = 5/12

Using the identity tan θ = opposite/adjacent, we can find the x and y components of A and B.

For A, we have:

x component = 35 cos a y component = 35 sin a

Using tan a = 4/3, we can find cos a and sin a by using Pythagoras’ theorem:

cos a = 3/5 sin a = 4/5

Therefore, the x and y components of A are:

x component = 35 cos a = 35 (3/5) = 21 y component = 35 sin a = 35 (4/5) = 28

Using the vector notation, we can write A as:

A = 21 î + 28 ĵ

Similarly, for B, we have:

x component = 13 cos ß y component = 13 sin ß

Using tan ß = 5/12, we can find cos ß and sin ß by using Pythagoras’ theorem:

cos ß = 12/13 sin ß = 5/13

Therefore, the x and y components of B are:

x component = 13 cos ß = 13 (12/13) = 12 y component = 13 sin ß = 13 (5/13) = 5

Using the vector notation, we can write B as:

B = 12 î + 5 ĵ

b.

To show that A + B makes an angle of 45° to the x-axis, we need to find the resultant vector R and its angle θ with the x-axis.

To find R, we can use the vector addition rule :

R = A + B R = (21 î + 28 ĵ) + (12 î + 5 ĵ) R = (21 + 12) î + (28 + 5) ĵ R = 33 î + 33 ĵ

To find θ, we can use the inverse tangent function :

tan θ = y component / x component tan θ = 33 / 33 tan θ = 1

θ = tan^-1(1) θ = 45°

Therefore, A + B makes an angle of 45° to the x-axis.

The time period of the ball’s motion will be 0.14 seconds

The frequency of the motion will be 7 Hz

The ball’s angular velocity will be 43.96  rad/second

given

a) frequency = 7 rev / s = 7 Hz

time period = 1 / frequency

           = 1 / 7 = 0.14 seconds

The period of the ball’s motion will be  0.14 seconds

b) The frequency will be 7 Hz

c) The ball’s angular velocity  = 2 * π * f

                                                = 2 * 3.14 * 7 = 43.96  rad/second

The ball’s angular velocity will be 43.96  rad/second

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Answer:

Jupiter

Explanation:

For this space trip, the distance to the planet must be taken into account, so Because Jupiter is much closer it should be the correct choice

.

It must also be taken into account that Saturn has a series of rings, for which the ship has a probability of colliding with one of these in one of its turns, therefore taking this into account, Jupiter must also be chosen.

The current that flows through the 75 ohm resistor in the circuit shown below is 0.12A.

The current flowing through a circuit can be calculated using the Ohm's law equation as follows;

V = IR

Where;

According to this question, a circuit is shown in the above image. A 75 ohm resistor is given alongside a voltage of 9V. The current can be calculated as follows;

9 = I × 75

I = 0.12A

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Answer:

High winds, hail, excessive precipitation, and wildfires are forms and effects of severe weather, as are thunderstorms, downbursts, tornadoes, waterspouts, tropical cyclones, and extratropical cyclones. Regional and seasonal severe weather phenomena include blizzards (snowstorms), ice storms, and duststorms.

Explanation:High winds-  wind speeds as low as 23 knots (43 km/h) may lead to power outages when tree branches fall and disrupt power lines. Once wind exceed 135 knots (250 km/h) within strong tropical cyclones and tornadoes, homes  completely collapse,  and significant damage is done to larger buildings. Total disruption occurs once wind exceeds 175 knots (324 km/h)

Tornado- Typically look like a narrow funnel reaching from the clouds to the ground. Their wind speed goes from 65 to 250 miles per hour.

"An extreme weather condition in which we face the high speed wind in combination with heavy snow."

As for any blizzard has the normal wind speed of about 40 mph, and the visibility range reduces to less then 500 ft.

Answer: High winds, hail, excessive precipitation, and wildfires are forms and effects of severe weather, as are thunderstorms, downbursts, tornadoes, waterspouts, tropical cyclones, and extratropical cyclones. Regional and seasonal severe weather phenomena include blizzards (snowstorms), ice storms, and duststorms.

Explanation:

Explanation:

use the formula and substitute the value