the total potential energy of a system of multiple springs is defined to be the sum of the potential energies stored in each of the springs. The blacks all have the same mass nctonles the instant shown, each block is ele leoxk on a horizontal, rhecks n dea th spring constant k. At Case A the four block- m, and all of the released from rest a a ro the right of its equilibrium position nt indicated by the dashed line). me that each spring is at its equilibrium Case B a case B, assume length when the block is at its equilibrium tank the cases according to magnitude of the net Ran or on the block at the instant shown, from largest to smallest. (Hint: In case C, how far was the point was displaced a distance A?) Explain Case C Case D b Use your answers above to rank the cases according to the time it takes the block n reaun its equilibriam position
Answers
Sort the scenarios based on how long it takes the block n to reach equilibrium T\(_{c}\)>T\(_{A}\)>T\(_{B}\)=T\(_{D}\).
F\(_{net}\)=kx₁=kx₂
x₁+x₂=A
\(\frac{F}{k}\)+\(\frac{F}{k}\)=A
A=\(\frac{2F}{k}\)
F\(_{net}\)=\(\frac{kA}{2}\)
point of connecting spring displaced by A/2
Ranking ⇒[(case-B)=(case-D)>(case-A)>(case-C)]
Part-(b)
Now, time period T=2π\(\sqrt{\frac{m}{k_{eq} } }\)
case-A \(k_{q}\)=k,
case-B \(k_{eq}\)=2k
case-C \(k_{eq}\)=k/2
case-D \(k_{eq}\)=2k
so,T\(_{c}\)>T\(_{A}\)>T\(_{B}\)=T\(_{D}\)
A process is in equilibrium when the observable properties, such as color, temperature, pressure, concentration, etc., do not change.
Equilibrium, which literally means "balance," denotes that the reactants and products involved in a chemical process are in balance with one another. The equilibrium condition can also be seen in some physical processes, such as the melting point of ice at 0 degrees Celsius, when both ice and water are present.
The equilibrium is known as a physical equilibrium in the case of physical processes like the melting of solids, the dissolution of salt in water, etc., whereas the equilibrium connected to chemical reactions is known as a chemical equilibrium.
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Related Questions
Which best describes the law of conservation of mass? The coefficients in front of the chemicals in the reactants should be based on the physical state of the products. Products in the form of gases are not considered a part of the total mass change from reactants to products. When reactants contain both a solid and a liquid, the solid counts toward the overall mass and the liquid does not. O The mass of the reactants and products is equal and is not dependent on the physical state of the substances.
Answers
Answer:
Explanation:
1. when both sides of the reactants and the products are equal
like h+oh ⇒ h20
hydrogen has 2 atoms on both sides and oxygen has one on both sides
2. no they are put to balance the equation
3. nope they are treated equally as all the other states
4. no if u are talking about a formula unit like NaCl for example it is aqueous not each element taken on its own if u are talking about just elements then i said before all states are treated equally
5. yup
An atom of a _____________________ has two electrons in its outer level and will lose these when it combines with another atom.
a. alkali metal
b. noble gas
c. alkaline earth metal
d. halogen
Answers
Answer:
A alkali metals hope this helps
Answer: c. alkaline earth metal
Explanation: group II elements in the periodic table are generally found as 2+ ions. This is because they have lost two electrons to ionic bonding.
Two forces F1 = -6.00i + 7.90j and F2 = 6.80i + 5.30j are acting on an object with a mass of m = 4.10 kg. The forces are measured in newtons, i and j are the unit vectors. What is the magnitude of the object's acceleration?
Answers
The magnitude of object's acceleration is 3.26m/s².
The mass of the body is 4.10 lg.
The two forces that are acting on the object are F₁ = -6i + 7.9j newton and F₂ = 6.8i + 5.3j Newton.
We know that the force acting on an object is,
F = Ma
Where,
F is the force acting,
M is the mass of the object and,
a is the acceleration of the object.
As we can see, two forces are acting on the body,
We can simplify the forces in x direction and y direction,
The forces are F₁ = -6i + 7.9j N and F₂ = 6.8i + 5.3j N.
So, the total force in x-direction,
Fₓ = (-6+6.8)i
Fₓ = 0.8i
Fᵧ = (7.9+5.3)j
Fᵧ = 13.2j
So, the net force Fₙ on the object is Fₙ = (0.8i + 13.2j) N
Now, putting value of force and mass in the formula,
F = Ma
0.8i + 13.2j = 4.1a
a = 0.19i + 3.21j m/s².
The magnitude of acceleration is,
|a| = √[(0.19)²+(3.21)²]
|a| = 0.361 +10.3
|a| = 3.26m/s².
So, the magnitude of acceleration is 3.26m/s².
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Question # 40
A body falls freely under gravity. If speeds is v when it has lost an amount x of the gravitational P.E, then its mass is:
2x / v2
2x / v3
2x / v4
none
please give me its solution
Answers
Answer:
Potential Energy = x = m g h
Kinetic energy = 1/2 m v^2
Assuming the mass fall from rest
1/2 m v^2 = m g h
v^2 = 2 g h
So the speed attained is independent of the mass
Also, x / v does not have the units of mass
So the solution is none of the above.
A block slides on a rough 45 degree incline. The coefficient of friction is µk what is the ratio of acceleration when the block accelerates down the incline to the acceleration when the block is projected up the incline
Answers
Answer:
\(\frac{a_{d}}{a_{i}} = \frac{(1 -mu)}{mu}\)
= (1 - μ)/μ
Explanation:
Always draw a diagram!
Up the incline:
\(Fr_{max}\) = maximum friction
\(Fr_{max}\) = μk
k = R = mg.cos(45) = mg.sin(45)
Resolution of forces parallel to the slope:
F (Fp in the diagram) = force of propulsion
g = gravity
\(F - Fr_{max} = ma_{i}\)
\(F -\) μ.mg.cos(45) \(= ma_{i}\)
Down the decline:
Resolution of forces:
\(mg.sin(45) - Fr_{max} = ma_{d}\)
\(mg.sin(45) -\) μ.mg.cos(45) \(= ma_{d}\)
Then, find the ratio:
\(\frac{ma_{d}}{ma_{i}} = \frac{mg.sin(45) - mu.mg.cos(45)}{-F + mu.mg.cos(45)} \\\\ \frac{a_{d}}{a_{i}} = \frac{k - k.mu}{-F + k.mu} \\\\ = \frac{k(1 -mu)}{-F + k.mu}\)
Potentially, there is no need to consider F in this situation, in which case:
\(\frac{a_{d}}{a_{i}} = \frac{k(1 -mu)}{k.mu} \\\\ = \frac{(1 -mu)}{mu}\)
= (1 - μ)/μ
PLEASE ANSWER FASG I WILL MARK BRAINELIST PLEASEEEEE
The number of protons in the nucleus of an atom determines the species of the atom, i.e., the element to which the atom belongs. An atom has the same number of protons and neutrons. But the electron number cannot be used instead because (5 points)
a. electrons are not within the nucleus
b. electrons are negatively charged
c. electrons can be removed from or added to an atom
d. electrons are lighter than protons
Answers
The electron number cannot be used instead because electrons can be removed from or added to an atom (option C)
Why the electron number cannot be used instead?The element of an atom is determined by its proton count, while the electron count can exhibit variability. Take, for instance, a sodium atom, which encompasses 11 protons and 11 electrons. However, it has the capacity to relinquish one electron, transforming into a sodium ion housing only 10 electrons.
This occurs due to the relatively loose binding of electrons to the nucleus, enabling their removal through the influence of an electric field or alternative mechanisms.
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Which type of muscle cell can have multiple nuclei
Answers
Answer:
Skeletal muscle cells
Explanation:
Skeletal muscle cells are long, cylindrical, and striated. They are multi-nucleated meaning that they have more than one nucleus. This is because they are formed from the fusion of embryonic myoblasts.
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objects 1 and 2 attract each other with a electrostatic force of 36.0 units
Answers
Answer:
F' = 9F
Explanation:
The complete question is "Objects 1 and 2 attract each other with a electrostatic force of 36.0 units. If the charge of Object 2 is tripled, then the new electrostatic force will be _____ units".
The electric force is given by :
\(F=\dfrac{kq_1q_2}{r^2}\)
If F = 36 units,
\(36=\dfrac{kq_1q_2}{r^2}\ ...(1)\)
If charges are tripled, q₁' = q₂' = 3q₁ and 3q₂
So,
\(F'=\dfrac{kq_1'q_2'}{r^2}\\\\F'=\dfrac{k\times 3q_1'\times 3q_2'}{r^2}\\\\F'=9\times \dfrac{kq_1'q_2'}{r^2}\\\\F'=9F\)
So, the new force becomes 9 times of the initial force.
Mrs Turner has a scale drawing of her apartment.IN the scale drawing the lenght of her apartment is 6.25 inches and the width is 2.75 onches. If Mrs. Turner used the scale factor 1 inc/18ft, what would the area of the apartment be?
Answers
The area of Mrs. Turner's apartment is approximately 0.05304 square feet.
To find the area of Mrs. Turner's apartment, we need to convert the measurements from the scale drawing to the actual measurements in feet, using the given scale factor of 1 inch/18 feet.
Length of apartment in feet = 6.25 inches × (1 foot/18 inches) = 0.34722 feet
Width of apartment in feet = 2.75 inches × (1 foot/18 inches) = 0.15278 feet
Now, we can calculate the area of the apartment in square feet by multiplying the length and width:
Area of apartment in square feet = Length × Width = 0.34722 feet × 0.15278 feet = 0.05304 square feet
Therefore, the area of Mrs. Turner's apartment is approximately 0.05304 square feet.
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Find the distance travelled when the initial angular velocity is 3 rad/s, the final angular velocity is 25 rad/s and the time of motion is 10s
Answers
Answer:
Please find attached pdf
Explanation:
The distance traveled is 140 radians.
The distance traveled by the object can be determined by first determining the angular acceleration followed by using the third kinematics equation of motion.
From the parameters given:
the initial angular velociy = 3 rad/sthe final angular velocity = 25 rad/sthe time of motion = 10 sThe angular acceleration of an object in motion is the change in the angular velocity with time.
∴
\(\mathbf{\alpha = \dfrac{\omega_f - \omega_i}{t}}\)
\(\mathbf{\alpha = \dfrac{(25- 3)rad /s}{10\ s}}\)
\(\mathbf{\alpha = \dfrac{(22)}{10} \ rad/s^2}\)
\(\mathbf{\alpha = 2.2 \ rad/s^2}\)
By using the third kinematics equation of motion:
\(\mathbf{\Delta x = \omega_it+ \dfrac{1}{2 }\alpha t^2}\)
where the distance traveled = Δx\(\mathbf{\Delta x = 3 \ rad/s \times (10) \ s + \dfrac{1}{2 }(2.2\ rad/s^2)(10 \ s) ^2}\)
\(\mathbf{\Delta x = 30 \ rad + 110 \ rad}\)
\(\mathbf{\Delta x = 140 \ rad}\)
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Difference between corpuscular theory and wave theory
Answers
Answer:
Explanation:
Isaac Newton argued that the geometric nature of reflection and refraction of light could only be explained if light were made of particles, referred to as corpuscles, because waves do not tend to travel in straight lines.
Two red blood cells each have a mass of 4.60×10−14 kg4.60×10−14 kg and carry a negative charge spread uniformly over their surfaces. The repulsion arising from the excess charge prevents the cells from clumping together. Once cell carries −2.00 pC−2.00 pC of charge and the other −2.90 pC−2.90 pC , and each cell can be modeled as a sphere 8.20 μm8.20 μm in diameter. What minimum relative speed vv would the red blood cells need when very far away from each other to get close enough to just touch? Ignore viscous drag from the surrounding liquid.
Answers
Answer:
v = 5.26 10² m / s
Explanation:
We can solve this exercise using the concepts of conservation of mechanical energy, because there is no friction
starting point. Red blood cells too far away
Em₀ = K = ½ m v²
final point. Red blood cells touching r = 8.20 10⁻⁶ m
Em_f = U = k q₁ q₂ / r₁₂
Em₀ = Em_f
½ m v² = k q₁ q₂ / r₁₂
v = √ (2 k q₁ q₂ / m r₁₂)
we calculate
v =√ (2 9 10⁹ 2 10⁻¹² 2.9 10⁻¹² / (4.60 10⁻¹⁴ 8.20 10⁻⁶))
v = √ (0.276775 10⁶)
v = 0.526 10³ m / s
v = 5.26 10² m / s
The maximum allowable resistance for an underwater cable is one hundredth of an ohm per
meter and the resistivity of copper is 1.54 x 10-80m.
a) Calculate the smallest cross sectional area of copper cable that could be used.
Answers
Answer:
A = 1.54 x 10⁻⁵ m² = 15.4 mm²
Explanation:
The resistance of a wire can be given by the following formula:
\(R = \frac{\rho L}{A}\\\\A = \frac{\rho L}{R} = \frac{\rho}{\frac{R}{L} }\)
where,
A = smallest cross-sectional area = ?
ρ = resistivity of copper = 1.54 x 10⁻⁸ Ωm
\(\frac{R}{L}\) = resistance per unit length of wire = 0.001 Ω/m
Therefore,
\(A = \frac{1.54\ x\ 10^{-8}\ \Omega m}{0.001\ \Omega/m}\)
A = 1.54 x 10⁻⁵ m² = 15.4 mm²
1. a wave passes every 0.0125 seconds. what is the frequency with which waves pass?
2. Middle C is 261.6 Hz. What is its period? (0.00382 s)
3. What is the frequency of a wave that has a period of 0.10 seconds?
4. An earthquake wave has a period of 2.7 seconds. What is its frequency? (0.37 Hz)
5. What is the velocity of an earthquake wave that has a frequency of 12 Hz, and a wavelength of 450 m? (5400 m/s)
6. What is the frequency of a sound wave (v = 343 m/s) that is 0.135 m long? (2540 Hz)
7. What is the wavelength of a, 89.1x106 Hz (89.1 MHz) radio wave? (v = c = 3.00x108 m/s) (3.37 m)
8. What is the velocity of ocean waves if they have a wavelength of 13.2 meters, and a frequency of 0.25 Hz? (3.3 m/s)
9. What is the frequency that 16 m long boxcars pass a crossing when the train is going 42 m/s? (2.6 Hz)
10. What is the wavelength of a sound wave with a frequency of 261.6 Hz? (v = 343 m/s) (1.31 m)
Answers
The frequency of the wave can be obtained as follow:
Period (T) = 0.0125 secondFrequency (f) = ?Frequency (f) = 1 / period (T)
= 1 / 0.0125
= 80 Hertz
2. How do i determine the period?The period of the wave can be obtained as follow:
Frequency (f) = 261.6 HzPeriod (T) =?Period (T) = 1 / Frequency (f)
= 1 / 261.6
= 0.00382 s
3. How do i determine the frequency?The frequency of the wave can be obtained as follow:
Period (T) = 0.10 secondFrequency (f) = ?Frequency (f) = 1 / period (T)
= 1 / 0.10
= 10 Hertz
4. How do i determine the frequency?The frequency of the wave can be obtained as follow:
Period (T) = 2.7 secondsFrequency (f) = ?Frequency (f) = 1 / period (T)
= 1 / 2.7
= 0.37 Hertz
5. How do i determine the velocity?The velocity of the wave can be obtained as follow:
Frequency of wave (f) = 12 HzWavelength (λ) = 450 mVelocity (v) = ?Velocity (v) = wavelength (λ) × frequency (f)
= 450 × 12
= 5400 m/s
6. How do i determine the frequency?The frequency of the wave can be obtained as follow:
Velocity of wave (v) = 343 m/sWavelength of wave (λ) = 0.135 mFrequency of wave (f) =?Frequency (f) = Velocity (v) / wavelength (λ)
= 343 / 0.135
= 2540 Hertz
7. How do i determine the wavelength?The wavelength of the wave can be obtained as follow:
Frequency of waves (f) = 89.1×10⁶ HzVelocity of wave (v)= 3.00×10⁸ m/sWavelength (λ) = ?Wavelength (λ) = Velocity (v) / frequency (f)
= 3.00×10⁸ / 89.1×10⁶
= 3.37 m
8. How do i determine the velocity?The velocity of the wave can be obtained as follow:
Wavelength (λ) = 13.2 m
Frequency (f) = 0.25 Hz
Velocity (v) = ?
Velocity (v) = wavelength (λ) × frequency (f)
= 13.2 × 0.25
= 3.3 m/s
9. How do i determine the frequency?The frequency of the wave can be obtained as follow:
Wavelength of wave (λ) = 16 m
Velocity of wave (v) = 42 m/s
Frequency of wave (f) =?
Frequency (f) = Velocity (v) / wavelength (λ)
= 42 / 16
= 2.6 Hertz
10. How do i determine the wavelength?The wavelength of the wave can be obtained as follow:
Frequency of wave (f) = 261.6 Hz Velocity of wave (v)= 343 m/sWavelength (λ) = ?Wavelength (λ) = Velocity (v) / frequency (f)
= 343 / 261.6
= 1.31 m
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what is the equivalent resistance of the circuit shown below?
Answers
The equivalent resistance of the circuit shown is 23 ohms.
Option A is correct.
What is resistance?Resistance is described as the opposition that a substance offers to the flow of electric current.
In a series circuit, all components are connected end-to-end to form a single path for current flow.
In a parallel circuit, all components are connected across each other with exactly two electrically common nodes with the same volt.
We then 1/R = 1/100 + 1/100 + 1 /(50+ 50) + 1 /(50+ 50)
I/R = 0.04
R = 25 ohms.
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When does a scatter plot show a correlation?
Answers
Answer:
Mark brainliest please
Explanation:
If the data points make a straight line going from the origin out to high x- and y-values, then the variables are said to have a positive correlation .When there is no clear relationship between the two variables, we say there is no correlation between the two variables.
Which of the following represents an example of thermal energy?
O a
Saxophone
Ob
Oven
с
Powerlines
Od
Windmill
Answers
Answer:
The answer of this question is windmill
How far can a sound wave travel in 90 seconds when the ambient air temperature is 10 C?
Answers
Answer:
s = 30330.7 m = 30.33 km
Explanation:
First we need to calculate the speed of sound at the given temperature. For this purpose we use the following formula:
v = v₀√[T/273 k]
where,
v = speed of sound at given temperature = ?
v₀ = speed of sound at 0°C = 331 m/s
T = Given Temperature = 10°C + 273 = 283 k
Therefore,
v = (331 m/s)√[283 k/273 k]
v = 337 m/s
Now, we use the following formula to calculate the distance traveled by sound:
s = vt
where,
s = distance traveled = ?
t = time taken = 90 s
Therefore,
s = (337 m/s)(90 s)
s = 30330.7 m = 30.33 km
Pulmonary circulation involves blood flow to and from the heart and the ____?
body
digestive organs
skin
brain
lungs
Answers
Answer: Lungs
Explanation:
Mr.smith and his wife were trying to move their new chair. Mr. Smith pulls with a force of 30N while Mrs.Smith pushes with a force of 25N in the same direction. What is the net force?
Answers
Answer:
55N
Explanation:
30N + 25N = 55N
determine energy of absorbed photon.
Answers
The energy of an absorbed photon is \(2.998 * 10^8\) and the resulting unit for energy is Joules (J).
To determine the energy of an absorbed photon in electronvolts (eV), we can use the equation E = hv, where E represents energy, h is Planck's constant, and v is the frequency of the photon. By substituting the values and units correctly, we can calculate the energy in electronvolts.
To determine the energy of an absorbed photon, one can use the following formula:
energy of absorbed photon = Planck's constant x frequency of radiation
Where Planck's constant is equal to \(6.626 * 10^{-34\) Joule seconds and frequency of radiation is measured in Hertz (Hz).
The energy of an absorbed photon can also be expressed using the wavelength of the radiation instead of its frequency.
The formula for this is:energy of absorbed photon = Planck's constant x speed of light / wavelength of radiation
Where the speed of light is equal to \(2.998 * 10^8\) m/s.In both cases,
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A car moving in a straight line uniformly accelerated speed increased from 3 m / s to 9 m / s in 6 seconds. With what acceleration did the car move?
a.
2 m/s2
b.
1 m/s2
c.
0 m/s2
d.
3 m/s2
Answers
Answer:
b) 1 m/s
I am sure...........
g A ceiling fan is rotating counterclockwise with a constant angular acceleration of 0.35π rad/s2 about a fixed axis perpendicular to its plane and through its center. Assume the fan starts from rest. (a) What is the angular velocity of the fan after 2.0 s? (Enter the magnitude.) rad/s (b) What is the angular displacement of the fan after 2.0 s? (Enter the magnitude.) rad
Answers
Answer:
The correct answer will be:
(a) 2.2 rad/s
(b) 2.2 rad
Explanation:
The given values are:
Angular acceleration, \(\alpha = 0.35 \pi \ rad/s^2\)
(a)...
At time t = 2.0 s,
The angular velocity will be:
⇒ \(\omega = \alpha t\)
On putting the estimated values, we get
⇒ \(=0.35\pi \times 2.0\)
∴ [\(\pi = 3.14\)]
⇒ \(=0.35\times 3.14\times 2.0\)
⇒ \(=2.2 \ rad/s\)
(b)...
The angular displacement will be:
⇒ \(\theta = \frac{1}{2}\alpha t^2\)
On putting the estimated values, we get
⇒ \(=\frac{1}{2}\times 0.35\pi\times (2.0)^2\)
⇒ \(=\frac{1}{2}\times 0.35\times 3.14\times 4\)
⇒ \(=1.099\times 2\)
⇒ \(=2.2 \ rad\)
static electricity is caused by moving electrical charges? true or false
Answers
The given statement "static electricity is caused by moving electrical charges" is false.
Static electricity is not caused by moving electrical charges but by stationary charges. When an object builds up a static electric charge, it has an excess of electrons or a deficiency of electrons.
The charge is stationary and does not move through the object like in a current.The imbalance of charge occurs when there is friction between two surfaces, which can be two objects or an object and the ground. Electrons move from one object to the other, creating a static electric charge on each object.
The amount of charge depends on the types of materials involved, the humidity, temperature, and other factors.Static electricity can be dangerous and cause damage to electrical equipment.
To prevent static electricity, grounding is used. Grounding provides a safe and efficient path for the charge to move through and prevents the buildup of charge on the object.
Static electricity can also be used for useful purposes. Photocopiers and printers use static electricity to transfer ink to paper, and air filters use static electricity to attract and trap pollutants. In industry, static electricity is used to attract and hold materials during the manufacturing process.
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How much current is in a circuit with a 1.5 V battery and three
2-ohm resistances (bulbs) in series?
Answers
Answer: 0.25A
Explanation: To calculate the current in the circuit, we can use Ohm's Law, which states that the current (I) flowing through a circuit is equal to the voltage (V) divided by the resistance (R):
I = V / R
In this case, the total resistance of the circuit is the sum of the individual resistances of the three bulbs in series, which gives us:
R = 2 + 2 + 2 = 6 ohms
The voltage of the battery is given as 1.5V.
So, using Ohm's Law, we can calculate the current in the circuit as:
I = V / R = 1.5 / 6 = 0.25 amps
Therefore, the current in the circuit is 0.25 amps.
The current in the circuit is 0.25 A.
Voltage across the circuit, v = 1.5 V
Resistance in each resistors, R = 2Ω
Since, the resistors are connected in series combination, their effective resistance,
R' = 3R
R' = 3 x 2
R' = 6Ω
According to Ohm's law, if the temperature and all other physical factors remain constant, the voltage across a conductor is directly proportional to the current that is flowing through it.
So, according to Ohm's law,
V = IR
Therefore, current flowing through the given circuit,
I = V/R
I = 1.5/6
I = 0.25 A
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The half-life of a radioactive isotope is 210 d. How many days would it take for the decay rate of a sample of this isotope to fall to 0.58 of its initial rate?
Answers
It would take approximately 546 days for the decay rate of the sample of this radioactive isotope to fall to 0.58 of its initial rate.
1. The decay rate of a radioactive isotope is proportional to the number of radioactive atoms present in the sample at any given time.
2. The decay rate can be expressed as a function of time using the formula: R(t) = R₀ * \(e^{(-\lambda t\)), where R(t) is the decay rate at time t, R₀ is the initial decay rate, λ is the decay constant, and e is the base of the natural logarithm.
3. The half-life of a radioactive isotope is the time it takes for half of the radioactive atoms in a sample to decay. In this case, the half-life is given as 210 days.
4. Using the half-life, we can find the decay constant (λ) using the formula: λ = ln(2) / T₁/₂, where ln(2) is the natural logarithm of 2 and T₁/₂ is the half-life.
5. Substituting the given half-life into the formula, we have: λ = ln(2) / 210.
6. Now, we need to find the time it takes for the decay rate to fall to 0.58 of its initial rate. Let's call this time "t".
7. Using the formula for the decay rate, we can write: 0.58 * R₀ = R₀ * e^(-λt).
8. Simplifying the equation, we get: 0.58 = \(e^{(-\lambda t\)).
9. Taking the natural logarithm of both sides, we have: ln(0.58) = -λt.
10. Substituting the value of λ from step 5, we get: ln(0.58) = -(ln(2) / 210) * t.
11. Solving for t, we have: t = (ln(0.58) * 210) / ln(2).
12. Evaluating the expression, we find: t ≈ 546.
13. Therefore, it would take approximately 546 days for the decay rate of the sample of this radioactive isotope to fall to 0.58 of its initial rate.
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When you see yourself in a plane mirror the image is always
Answers
When you see yourself in a plane mirror, the image is always virtual, erect and the image formed has same size as that of the object
Besides that, the image will be at the same distance behind the mirror as the object is in the front of the mirror, so we can say that the image formed by the plane mirror is an exact copy of ourselves
Because the light does not actually pass through the image, that's why the image formed by plane mirror is called a virtual image and the real images are formed by curved mirror and they are produced on the same side as that of the mirror
But the only difference is that the image formed by plane mirror is laterally inverted, means if raise our right hand then it would appear in the mirror as if we have raised our left hand
To learn more about plane mirrors,
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Describe how electric potential energy, kinetic energy, and work change when two charges of opposite sign are placed near each other.
Answers
Answer:
As opposites attract, q is pulled to Q. And that force from Q is working on q, force over distance. Which means the potential energy q started with is being converted into kinetic energy. q is accelerating and picking up speed.
Explanation:
A science teacher asks her class to compare the way in which heat is transferred to water in a pond as opposed to soil at the edge of the pond. Which of the following investigations will help them make this comparison?
Answers
The investigation" Place soil in the bottom of a container and water on top, place it in the sun, and measure the temperature of the container" will help them make this comparison.
How to carryout this investigation?A starting point for conducting a comparative analysis is to fill a container with soil followed by pouring water on top.
The next step involves placing it under sun rays while simultaneously recording its temperature. Post that, we need to separate the sand from water to rapidly gauge any change in temperature.
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Complete question:
A science teacher asks her class to compare the way in which heat is transferred to water in a pond as opposed to the soil at the edge of the pond. Which of the following investigations will help them make this comparison?
a. Mix water and soil in a container, place it in the sun, and measure the temperature of the container.
b. Place soil and water in separate containers, place them indoors, and monitor the temperature of the containers.
c. Place soil and water in separate containers, place them in the sun, and monitor the temperatures of each container.
d. Place soil in the bottom of a container and water on top, place it in the sun, and measure the temperature of the container.
anybody from India ?
Answers
Answer:
No,why you say that
Explanation: