An athlete needs to lose weight and decides to do it by “pumping iron.” (a) How many times must an 90.0 kg weight be lifted a distance of 0.890 m in order to burn off 1.00 lb of fat, assuming that that much fat is equivalent to 3500 kcal? (b) If the weight is lifted once every 2.10 s, how long does the task take?

Answers

Answer 1

Answer:

230kg would be the best answer

Explanation:


Related Questions

If a proton is traveling north directly above the wire, what is the direction of the magnetic force on the proton due to the wire?

Answers

Answer:

Direction is downwards

Explanation:

This is by employing Flemings Right hand rule which says If you point your pointer finger in the direction the positive charge is moving, and then your middle finger in the direction of the magnetic field, your thumb points in the direction of the magnetic force pushing on the moving charge.

Identify two types of motion where an object's speed remains the same while it continues to change direction

Answers

Answer:

motion in which acceleration is orthogonal to travel directionmotion in which speed is constant

Explanation:

1) Any motion in which the acceleration is orthogonal to the direction of travel will have this characteristic:

  circular motion in a plane

  motion of a charged particle in a magnetic field perpendicular to the direction of travel

__

2) Motion in which the speed is constant, regardless:

  motion of a photon through a varying gravitational field

A weight of 35.0 N is suspended from a spring that has a force constant of 220 N/m. The system is undamped and is subjected to a harmonic driving force of frequency 10.5 Hz, resulting in a forced-motion amplitude of 3.00 cm. Determine the maximum value of the driving force.

Answers

Answer:

The force is  [tex]F = 423.04 \ N[/tex]

Explanation:

From the question we are told that

   The weight is  [tex]W = 35 .0 \ N[/tex]

    The  force constant is  [tex]k = 220 \ N/m[/tex]

    The frequency is  [tex]f = 10.5 \ Hz[/tex]

     The amplitude is  [tex]A = 3.00 \ cm = 0.03 \ m[/tex]

Generally the maximum driving force is mathematically represented as

     [tex]F = m * w^2 A[/tex]

Here  m is the mass of the weight which is  mathematically represented as  

       [tex]m = \frac{ W }{g}[/tex]

=>     [tex]m = \frac{ 35 }{9.8 }[/tex]

=>     [tex]m = 3.571 \ kg[/tex]

  Also   [tex]w[/tex] is the angular frequency of the weight which is mathematically represented as

         [tex]w = 2 \pi * f[/tex]

         [tex]w = 2* 3.142 * 10[/tex]

=>      [tex]w = 62.84 \ rad/s[/tex]

So

    [tex]F = 3.571 * 62.84^2 * 0.03[/tex]

    [tex]F = 423.04 \ N[/tex]

Four students measured the same line with a ruler like the one shown below. The results were as follows: 5.52 cm, 6.63 cm, 5.5, and 5.93. Even though you cannot see the line they actually measured, which of the recorded measurements are possible valid measurements for this instrument, according to its precision? Select all that apply. 1. 5.52 2. 6.63 3. 5.5 4. 5.93

Answers

Answer:

1) 5.52 cm , C) 5.5 cm

Explanation:

When a measurement is carried out, in addition to the value of the magnitude, the error or uncertainty of the measurement must occur, in a direct measurement with an instrument the uncertainty is equal to the appreciation of the instrument.

Uniform see the errors by the number of significant figures days, in this cases they are two decimals for which the appreciation of the instrument ± - 0.01

now we can analyze the measurements made

1) 5.52 cm. Validate. It is a valid measurement is within the uncertainty range

2) 6.63 cm. It does not validate. It is out of the error range

3) 5.5 cm Valid. It is within the given error range,

4) 5.93 cm Not Valid. It is out of the error range.

Answer:

6.63 and 5.93

Explanation:

Rigid-body mechanics is divided into two areas: ________deals with the equilibrium of bodies, that is, those that are either at rest or move with a constant velocity; whereas________ is concerned with the accelerated motion of bodies.

Answers

Answer:

Statics and dynamics

Explanation:

Rigid-body mechanics is divided into two areas: statics deals with the equilibrium of bodies, that is, those that are either at rest or move with a constant velocity; whereas dynamic is concerned with the accelerated motion of bodies.

In rigid-body mechanics, there are two various branches: statics and dynamics. Statics studies the stability of bodies, i.e., those that are at rest or move at a constant speed, whereas dynamics studies the accelerated movement of bodies.

What is equilibrium?

Even if neither a system's energy state nor its phase of motion tends to change over time, the system is said to be in equilibrium.

A simple mechanical body is considered to have been in equilibrium if it neither suffers accelerometers nor angular acceleration. Unless an external force disrupts this state, it will remain in equilibrium indefinitely.

When all forces acting on a single particle are added together and equal to zero, equilibrium results. In addition to the conditions outlined in the article above, a rigid body is said to be in equilibrium if the vector sum of any torques operating on it equals zero, maintaining the body's steady state of rotational motion.

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You and a friend each drive 58 km. You travel at 89. km/h, your friend at 94 km/h. How long will your friend wait for you at the end of the trip?

Answers

Answer:

2.1 minutes/ 126 seconds

Explanation:

Distance = speed x time

We can rearrange this equation for time:

Time = Distance/Speed

For you (89km/h):

Distance = 58km, Speed = 89km/h

Therefore time = 58/89 = 0.652 (3dp) hours

For friend:

Distance = 58km, Speed = 94km/h

Therefore time = 58/94 = 0.617 (3dp) hours

Difference in time = 0.652 - 0.617 = 0.035 hours.

Convert to minutes: 0.035 x 60 (because 60 min in hour) = 2.1

Your friend will be waiting for 2.1 minutes, or 126 seconds (2.1 x 60).

Hope this helped!

3. Why does a cyclist bend cycle at the time of making circular
turn?​

Answers

A cyclist must lean into a turn to prevent tipping over in the other direction.The frictional force provides the centripetal force necessary to turn the cyclist to the left.But the frictional force also produces a clockwise torque that will cause the rider and the bicycle to tip clockwise to the right.The force is provided by the friction of the tires.

Answer:

to become stable

Explanation:

when it bends it body, it moves closer to the center of gravity which makes the bicycle stable and hence the turn can be taken easily

A π_ ("pi-minus") particle, which has charge _e, is at location ‹ 4.00 10-9, -5.00 10-9, -2.00 10-9 › m. What is the electric field at location < -2.00 10-9, 4.00 10-9, 3.00 10-9 > m, due to the π_ particle?

Answers

Answer:

The electric field due to charge at distance r is [tex](-0.8169\times10^{6},0.8169\times10^{6}, 2.800\times10^{6})\ N/C[/tex]

Explanation:

Given that,

Initial position of particle [tex]r_{1}=4.00\times10^{-9}i-5.00\times10^{-9}j-2.00\times10^{-9}k\ m[/tex]

Final position of particle [tex]r_{2}=-2.00\times10^{-9}i+4.00\times10^{-9}j+ 3.00\times10^{-9}k\ m[/tex]

We need to calculate the magnitude of the position vector

Using formula of position vector

[tex]\vec{r}=\vec{r_{2}}-\vec{r_{1}}[/tex]

Put the value into the formula

[tex]\vec{r}=-2.00\times10^{-9}i+4.00\times10^{-9}j+ 3.00\times10^{-9}k-(4.00\times10^{-9}i-5.00\times10^{-9}j-2.00\times10^{-9}k)[/tex]

[tex]\vec{r}=-9\times10^{-9}i+9\times10^{-9}j+5\times10^{-9}k[/tex]

[tex]\vec{|r|}=\sqrt{(9^2+9^2+5^2)\times10^{-18}}[/tex]

[tex]\vec{|r|}=13.6\times10^{-9}\ m[/tex]

We need to calculate the unit vector along electric field direction

Using formula of unit vector

[tex]\hat{r}=\dfrac{\vec{r}}{|\vec{r}|}[/tex]

Put the value into the formula

[tex]\hat{r}=\dfrac{-9\times10^{-9}i+9\times10^{-9}j+5\times10^{-9}k}{13.6\times10^{-9}}[/tex]

[tex]\hat{r}=-0.66i+0.66j+0.36k[/tex]

We need to calculate the electric field due to charge at distance r

Using formula of electric field

[tex]E=\dfrac{kq}{r^2}\hat{r}[/tex]

Put the value into the formula

[tex]E=\dfrac{9\times10^{9}\times1.6\times10^{-19}}{(13.6\times10^{-9})^2}\times(-0.66i+0.66j+0.36k)[/tex]

[tex]E=7.78\times10^{6}\times(-0.66i+0.66j+0.36k)[/tex]

[tex]E=-0.8169\times10^{6}i+0.8169\times10^{6}j+2.800\times10^{6}k\ N/C[/tex]

[tex]E=(-0.8169\times10^{6},0.8169\times10^{6}, 2.800\times10^{6})\ N/C[/tex]

Hence, The electric field due to charge at distance r is [tex](-0.8169\times10^{6},0.8169\times10^{6}, 2.800\times10^{6})\ N/C[/tex]

in a young's double-slit experiment the center of a bright fringe occurs wherever waves from the slits differ in the distance they travel by a multiple of

Answers

Answer:

Zero

Explanation:

Because using

Deta X= dsinစ x n(lambda)

But we know that for central maxima

n is zero

So after substituting

Deta x = 0

A typical cell has a membrane potential of -70 , meaning that the potential inside the cell is 70 less than the potential outside due to a layer of negative charge on the inner surface of the cell wall and a layer of positive charge on the outer surface. This effectively makes the cell wall a charged capacitor. Because a cell's diameter is much larger than the wall thickness, it is reasonable to ignore the curvature of the cell and think of it as a parallel-plate capacitor. How much energy is stored in the electric field of a 50--diameter cell with a 7.0--thick cell wall whose dielectric constant is 9.0?

Answers

Answer:

energy is stored is 2.2 × 10⁻¹³ J

Explanation:

The capacitance  of the cell is given with the expression

C = (KE₀A) / d

k is the dielectric constant, A is the area of the cell, d is the thickness of the cell.

Now given that; the diameter is 50,

Area A = 4πR²

A = 4π × ( 25 × 10⁻⁶ m)²

A = 7850×10⁻¹² m²

our capacitance C = (KE₀A) / d

C = [9 ( 8.85 × 10⁻¹² C²/N.m²  × 7850×10⁻¹² m² )] / 7×10⁻⁹ m

C = 8.93 × 10⁻¹¹ F

Now Energy stored

E = 1/2 × CV²

E = 1/2 × (8.93 × 10⁻¹¹ F) × ( 70 × 10⁻³ V)²

E = 2.2 × 10⁻¹³ J

Therefore energy is stored is 2.2 × 10⁻¹³ J

The energy that should be stored in the electric field should be 2.2 × 10⁻¹³ J.

Calculation of the energy:

Since

The capacitance  of the cell should be

C = (KE₀A) / d

Here,

k is the dielectric constant,

A is the area of the cell,

d is the thickness of the cell.

Now the diameter is 50,

So,

Area A = 4πR²

A = 4π × ( 25 × 10⁻⁶ m)²

A = 7850×10⁻¹² m²

Now

our capacitance C = (KE₀A) / d

C = [9 ( 8.85 × 10⁻¹² C²/N.m²  × 7850×10⁻¹² m² )] / 7×10⁻⁹ m

C = 8.93 × 10⁻¹¹ F

Now Energy stored should be

E = 1/2 × CV²

E = 1/2 × (8.93 × 10⁻¹¹ F) × ( 70 × 10⁻³ V)²

E = 2.2 × 10⁻¹³ J

Therefore energy is stored is 2.2 × 10⁻¹³ J.

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A hiker caught in a rainstorm absorbs 1.00 L of water in her clothing. If it is windy so that the water evaporates quickly at 20 ∘C, how much heat is required for this process?

Answers

Answer:

2260000 J

Explanation:

From the question,

Q = ml.................... Equation 1.

Where Q = Heat, m = mass of water, l = specific latent heat of vaporization.

But we can get the mass o water using the formula of density.

D = m/v........... Equation 2

Where D = density of water, v = volume of water.

make m the subject of the formula in equation 2

m = D×v............ Equation 3

Substitute equation 3 into equation 1

Q = D×v×l................. Equation 4

Given: v = 1.00 L = 0.001 m³.

Constant: l = 226000 J/kg, D = 1000 kg/m³

Substitute these values into equation 4

Q = 0.001(2260000)(1000)

Q = 2260000 J

A) A spaceship passes you at a speed of 0.800c. You measure its length to be 31.2 m .How long would it be when at rest?
B) You travel to a star 145 light-years from Earth at a speed of 2.90

Answers

Answer:

a

     [tex]l_o  =52 \  m[/tex]

b

      [tex]l = 37.13 \ LY[/tex]

Explanation:

From the question we are told that

    The  speed of the spaceship is  [tex]v  =  0.800c[/tex]

    Here  c is the speed of light with value  [tex]c =  3.0*10^{8} \ m/s[/tex]

    The  length is  [tex]l = 31.2 \  m[/tex]

     The  distance of the star for earth is [tex]d = 145 \  light \  years[/tex]

     The  speed is [tex]v_s = 2.90 *10^{8}[/tex]

     

Generally the from the length contraction equation we have that

       [tex]l  =  l_o  \sqrt{1 -[\frac{v}{c } ]}[/tex]

Now the when at rest the length is  [tex]l_o[/tex]

So  

      [tex]l_o =\frac{l}{\sqrt{ 1 - \frac{v^2}{c^2 } } }[/tex]

      [tex]l_o =\frac{ 31.2 }{ \sqrt{1 - \frac{(0.800c ) ^2}{c^2} } }[/tex]

      [tex]l_o=52 \  m[/tex]

Considering b  

  Applying above equation

            [tex]l  =l_o \sqrt{1 -  [\frac{v}{c } ]}[/tex]

Here [tex]l_o  =145 \  LY(light \ years )[/tex]

So

           [tex]l=145 *  \sqrt{1 -  \frac{v_s^2}{c^2 } }[/tex]

            [tex]l =145 *  \sqrt{ 1 - \frac{2.9 *10^{8}}{3.0*10^{8}} }[/tex]

            [tex]l = 37.13 \ LY[/tex]

A cylindrical Benzene tank is 12ft high and 32in in diameter. How many kilograms of benzene can the tank store? help please make it good

Answers

Answer:

1670 kg

Explanation:

Convert the dimensions to cm.

12 ft × (12 in/ft) × (2.54 cm/in) = 365.76 cm

32 in × (2.54 cm/in) = 81.28 cm

Calculate the volume.

V = πr²h

V = π (81.28 cm / 2)² (365.76 cm)

V = 1,897,813.27 cm³

V = 1,897,813.27 mL

V = 1,897.81 L

Density of benzene is 0.88 kg/L.

m = (0.88 kg/L) (1,897.81 L)

m = 1670 kg

True or False: The study of the motion of objects is a foundational part of Physics

Answers

Answer:

True

Explanation:

In the foundational topics of physics mechanics consists of motion, energy and forces, theses areas are core concerns in the study of physics hence they are the foundational topics and are often times treated first in all matters.

What is motion?

Simply put, it is alternating from points to points.

the areas of study that involves motion and force together is call dynamics.

while the area of study of motion without any applied force is call statics.

Convert an acceleration of 1km/h^2 into cm/8^2?

Answers

Answer:

1km/h^2 = 5/648 cm/s^2 [about 7.7 x 10^(-3) /s^2]

Explanation:

1km = 10^3 m = 10^5 cm

1h = 60x60 = 3600s

--> 1km/h^2 = 10^5 cm / (3600^2) s^2

<=> 1km/h^2 = 5/648 cm/s^2 [about 7.7 x 10^(-3) /s^2]

Radio waves are readily diffracted around buildings, whereas light waves are negligibly diffracted around buildings. This is because radio waves

Answers

Answer:

Radio waves have longer wavelength

Explanation:

Radio wave is an electromagnetic frequency that has the ability to travel through long distance. They have frequencies shuttling been the range of 10^4 hz and a frequency of 10^12 hz

Light wave is also called visible light. This is because it is visible to the naked eye, despite it being in the electromagnetic spectrum. It's frequency is usually between 4*10^-7 hz and a frequency of 7*10^-7 hz.

As can be seen from both, the radio waves length are quite far stronger than that of the light waves.

A bullet is fired horizontally with initial velocity of 800 m/s as a target located 200 mfrom the rifle.(a).How much time is required for the bullet to reach the target

Answers

Answer:

t = 0.25 seconds

Explanation:

Given that,

Initial speed of a bullet, v = 800 m/s

Distance from the target is 200 m

We need to find the time required for the bullet to reach the target. Time is simply calculated by the definition of velocity i.e.

[tex]t=\dfrac{d}{v}\\\\t=\dfrac{200\ m}{800\ m/s}\\\\t=0.25\ s[/tex]

So, it will take 0.25 seconds to reach the target.

"Describe the distribution of electromagnetic radiation emitted from the sun (what wavelengths are emitted

Answers

Answer:

The Sun is known to emit almost all wavelengths of electromagnetic radiation but 99% of the radiation emitted by the sun lie in the ultraviolet, visible, and infrared regions.

Ultraviolet (UV) is a form of electromagnetic radiation with wavelength from 10 nm to 400 nm (750 THz). The wavelength is shorter than that of visible light but longer than X-rays. UV rays make up about 10% of the e-m waves from the sun. UV radiation is carcinogenic to the skin, and is absorbed by the melanin pigment in the skin.

Visible light is the only e-m wave that our eyes can pick up, i.e the only e-m wave we can see. The frequency of this spectrum corresponds to a band in the vicinity of 405–790 THz. It can further be separated into different colors. It makes up a large portion of the e-m waves coming from the sun.

Infrared wave is an e-m radiation whose wavelengths longer than those of visible light. It is is generally invisible to the human eye. The wavelength of an infrared wave extend from the red edge of the visible spectrum at 700 nanometers (frequency 430 THz), to 1 millimeter (300 GHz). Most of the thermal radiation emitted by objects near room temperature is infrared. Most of the heat from the sun reach us as infrared radiation. As with all e-m radiation, infrared radiation carries radiant energy and behaves both like a wave and like a photon.

Marisol drives north at 64.3 km/h. How far does Marisol travel after 5.8 h?

Answers

Answer:

372.94 km

d= st

= (64.3 km/h)(5.8h)

=372.94 km

Answer: 372.94

Explanation: it’s correct❤️

If white light illuminates a diffraction grating having 710 lines/mmlines/mm , over what range of angles does the visible mm

Answers

Complete Question

The human eye can readily detect wavelengths from about 400 nm to 700 nm. If white light illuminates a diffraction grating having 710 lines/mm, over what range of angles does the visible m = 1 spectrum extend

Answer:

The  value  [tex]\theta = 16.5 ^ o[/tex]

Explanation:

From the question we are told that

   The  diffraction grating haves [tex]a =  710 \  lines /mm[/tex]

 

Generally the separation of the slit is mathematically represented  as

      [tex]d = \frac{1}{710} \ mm =0.001408 \ mm =   1.408 *10^{-6} \  m[/tex]

 Generally the condition for constructive interference is mathematically represented as  

           [tex]dsin(\theta ) = n \lambda[/tex]

So

          [tex]\theta =  sin ^{-1} [\frac{n * \lambda }{d} ][/tex]

=>       [tex]\theta  =  sin^{-1}[\frac{1 *  400 *10^{-9}}{ 1.408*10^{-6}} ][/tex]

=>         [tex]\theta = 16.5 ^ o[/tex]

What tension must a 50.0 cm length of string support in order to whirl an attached 1,000.0 g stone in a circular path at 5.00 m/s?

Answers

Explanation:

Assuming the circular path is horizontal, the sum of forces in the centripetal direction is:

∑F = ma

T = mv²/r

T = (1.0000 kg) (5.00 m/s)² / (0.500 m)

T = 50.0 N

How does the antenna work to detect the electromagnetic signal produced when radio stations broadcast

Answers

Answer:

The antenna which is a transmitting and receiving device emits energy from current as radio waves, it does this by attracting the radio waves which are a form of EMWs and converts it to small voltages which are amplified to the final voltage signal which hear

A sinewave has a period (duration of one cycle) of 35 μs. What is its corresponding frequency (no of completed cycles in a second), in kHz, expressed to 3 significant figures?

If the frequency of this sinewave is now reduced by a factor of 2.5, using the value calculated above to 3 significant figures, what will be the new period?

Express your answer in μs, to 3 significant figures

Answers

Answer:

We know that the relation between period and frequency is:

T = period.

f = frequency.

T = 1/f.

Then, if the period is 35 μs = 35x10^-9 seconds.

The frequency will be:

f = (1/ 35x10^-9 s) = (1/35s)*10^9

now, 1Hz = 1/s

1KHz = 1/1000s = 10^-3 s

f = (10^9/35)*10^-3 KHz = 10^6/35 KHz = 28,571.429 KHz.

Now we must divide this by 2.5:

28,571.429 KHz/2.5 = 11,428.572 KHz

Now we can use the relation:

T = 1/f

T = 1/11,428.572 KHz = (1/11,428.572 Hz)*10^-3

T = 8.750x10^-8 seconds.

And we want this expressed in  μs = 10`-9 seconds, we have:

T = 8.750x10^-8 s = (10/10)8.750x10^-8 s = 87.50x10`-9s = 87.50 μs

So as expected, if the frequency is reduced by a factor of 2.5, the  period will increase by a factor of 2.5

As the initial period was 35 μs, and:

2.5*35 μs = 87.5 μs

a wave is described by where x is in meters, y is in centimeters and t is in seconds. The angular frequency is

Answers

Complete Question

A wave is described by y(x,t) = 0.1 sin(3x + 10t), where x is in meters, y is in centimetres and t is in seconds. The angular wave  frequency is

Answer:

The  value is [tex]w =  10 \ rad /s[/tex]

Explanation:

From the question we are told that  

    The equation describing the wave is y(x,t) = 0.1 sin(3x + 10t)

Generally the sinusoidal equation representing the motion of a wave is mathematically represented as

         [tex]y(x,t) =  Asin(kx + wt )[/tex]

Where  w  is the  angular frequency

Now comparing this equation  with that given we see that

       [tex]w =  10 \ rad /s[/tex]

 

               

A soccer ball and a volleyball moved on a plane surface very fast. If the two balls moved
at the same speed, which of the two balls is more difficult to stop?

Answers

Answer:

soccer ball

Explanation:

Because it's round in shape and therefore cannot be stopped as both moves at same speed. There's no edges or corners to bounce up and slow the ball.

Answer:

They will both be since they are going the same speed

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A spinning top spinning at 16rad/s takes 88.9s to come to a complete stop. Find the angular acceleration of the top.

Answers

Answer:

The angular acceleration of the top is 0.18 rad/s²

Explanation:

Given;

angular velocity of the top, ω = 16 rad/s

time it takes to come to a complete stop, t = 88.9s

The angular acceleration of the top, is calculated as;

[tex]\alpha = \frac{\omega}{t}[/tex]

α is the angular acceleration

ω is angular acceleration

t is the time

[tex]\alpha = \frac{\omega}{t}\\\\\alpha = \frac{16}{88.9}\\\\\alpha =0.18 \ rad/s^2[/tex]

Therefore, the angular acceleration of the top is 0.18 rad/s²

Circle the larger unit:

1.millimeter, centimeter

2. kilogram, megagram

3. microsecond, millisecond

4.dL, mL

5.mg, kg

6.Mm, mm

7.s, cs

8.m, Mm

9.μ s, Ks

Answers

1. Centimeter
2. Kilogram
3. Millisecond
4. DL
5. Kg
6. Mm
7. S
8. Mm
9. Us
The larger unit is centimeter.The larger unit is megagram.The larger unit is millisecond.The larger unit is dL.The larger unit is kg.The larger unit is Mm (megameter).The larger unit is s (second).The larger unit is Mm (megameter).The larger unit is Ks (kilosecond).

In each case, the larger unit is the one that represents a greater quantity or magnitude compared to the other unit. For example, a centimeter is larger than a millimeter because one centimeter is equal to 10 millimeters. Similarly, a megagram is larger than a kilogram as one megagram is equivalent to 1,000 kilograms. The pattern continues for each pair, where the larger unit represents a higher order of magnitude or a greater number of the smaller units.

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A substance is soluble in water. It is added into the water and dissolves. More solute continues being added until it reaches a point where the newly added solute begins to sit on the bottom of the container without dissolving. What has happened? A. The solute has become a solvent. B. The solute was not actually soluble to begin with. C. The solute has become saturated. D. The solution has become saturated.

Answers

Answer:

option D

Explanation:

also to add.... there exists a solubility equilibrium between solid solute and the solution.

The newly added solute begins to sit on the bottom of the container without dissolving this represents that the solution has become saturated, Therefore the correct answer is D.

What is a Saturated Solution?

It is a type of solution in which no more amount of solute can be dissolved any further, The saturated solution already contains the maximum amount of solute that can be dissolved within it.

The solution reached a point where the newly added solute starts to sit on the bottom this means the solution has become saturated.

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What is the frequency (in Hz) at which he bounces, given that his mass plus the mass of his equipment is 84.0 kg?

Answers

Complete question:

The length of nylon rope from which a mountain climber is suspended has an effective force constant of 1.40 ×10⁴ N/m.

What is the frequency (in Hz) at which he bounces, given that his mass plus the mass of his equipment is 84.0 kg?

Answer:

The frequency (in Hz) at which he bounce is 2.054 Hz

Explanation:

Given;

effective force constant, K = 1.40 ×10⁴ N/m.

The total mass = his mass plus the mass of his equipment, m = 84 kg

The frequency (in Hz) at which he bounce is given by;

[tex]f = \frac{1}{2\pi} \sqrt{\frac{k}{m}}\\\\f = \frac{1}{2\pi} \sqrt{\frac{1.4*10^4}{84}}\\\\f = 2.054 \ Hz[/tex]

Therefore, the frequency (in Hz) at which he bounce is 2.054 Hz

11. A circular racetrack has a radius of 500 m. What is the displacement of a bicyclist when she travels around the track from the north side to the south side

Answers

Answer:

≈159.15

Explanation:

So displacment is the fastest, or shortest way to get somewhere

Youd take your circumference (500) and find the diameter from that using the 2 formulas

C=2πr

d=2r

your answer would be ≈159.15

If im incorrect please correct me! Im only just relearning this stuff (im a freshman)

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