Explanation:
Optics is a branch of physics that is the study of light and vision. ... The branch of physics dealing with the nature and properties of electromagnetic energy in the light spectrum and the phenomena of vision. In the broadest sense, optics deals with infrared light, visible light, and ultraviolet light.
A car has a velocity of 10m/s.it now accelerates for 1m/s for 1/4 minutes. Find the distance travelled in this time and final speed of the car
¡Hellow!
For this problem, lets recabe information:
v (Velocity) = 10 m/s
a (Aceleration) = 1 m/s²
t (Time) = 1/4 min = 25 s
d (Distance) = ?
v' (Final velocity) = ?
First, for calculate distance, lets applicate formula:
\(\boxed{\boxed{\text{d = Vo * t + (a * t}^{2})\text{ * 0,5} } }\)
Lets replace according we information and let's resolve it:
d = 10 m/s * 25 s + (1 m/s² * (25 s)²) * 0,5
d = 250 m + (625 m) * 0,5
d = 2,5 m + 312,5 m
d = 314 meters.
Now, for calculate final speed, lets applicate formula:
\(\boxed{\boxed{\text{v' = v + a * t} } }\)
Lets replace according we information and let's resolve it:
v' = 10 m/s + 1 m/s² * 25 s
v' = 10 m/s + 25 m/s
v' = 35 m/s
¿Good Luck?
Att: That guy who use the "ñ".
4- One day you notice that the outside temperature increased by 27 F ∘ between your early morning jog and your lunch at noon. What is the corresponding change in temperature in the (a) Celsius and (b) Kelvin scales?
One day you notice that the outside temperature increased by 27 F ∘ between your early morning jog and your lunch at noon. the corresponding change in temperature in the (a) Celsius is -2.78 °C and (b) Kelvin scales is 270.37 K.
To calculate the corresponding change in temperature in Celsius and Kelvin scales, we can use the conversion formulas between Fahrenheit, Celsius, and Kelvin.
(a) Change in temperature in Celsius (ΔC):
The conversion formula from Fahrenheit to Celsius is: ΔC = (ΔF - 32) * (5/9)
Substituting the given change in Fahrenheit temperature:
ΔC = (27 - 32) * (5/9)
ΔC ≈ -2.78 °C
Therefore, the corresponding change in temperature in Celsius is approximately -2.78 °C.
(b) Change in temperature in Kelvin (ΔK):
The conversion formula from Celsius to Kelvin is: ΔK = ΔC + 273.15
Substituting the calculated change in Celsius temperature:
ΔK = -2.78 + 273.15
ΔK ≈ 270.37 K
Hence, the corresponding change in temperature in Kelvin is approximately 270.37 K.
In summary, the change in temperature from the morning jog to lunch is approximately -2.78 °C in Celsius and approximately 270.37 K in Kelvin. The negative sign indicates a decrease in temperature.
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suppose you remove two eggs from the refrigerator, one hard-boiled and the other uncooked. you wish to determine which is the hard-boiled egg without breaking the eggs. this determination can be made by spinning the two eggs on the floor and comparing the rotational motions. which egg spins faster?hardboileduncooked which egg rotates more uniformly?uncookedhardboiled explain your answer.
The hard-boiled egg will spin faster and more uniformly than the uncooked egg. This is because the yolk and white of a hard-boiled egg are solid, meaning that they rotate together as a single mass, creating a more stable and consistent spin.
In contrast, the liquid yolk and white of an uncooked egg will slosh around inside the shell, causing the egg to wobble and rotate less uniformly.
1. When you spin the eggs, the hard-boiled egg has a solid interior, which means its mass is uniformly distributed. This allows it to spin faster and more uniformly.
2. On the other hand, the uncooked egg has a liquid yolk inside, which causes the mass distribution to be uneven. As a result, it will spin slower and have a more wobbly rotation.
Therefore, by observing the rotational motion of the two eggs, you can determine which one is hard-boiled without having to break them open.
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A student completes a PET experiment using chloroplasts from leaves lacking pigments that absorb in the 550 nm to 600 nm wavelength range. Which color of light should they avoid in their experiment if they want to measure activity at different wavelengths? O Blue O Orange O Yellow O Red O Violet
The student should avoid blue, orange, yellow, and red light in their experiment.
The student should avoid blue, orange, yellow, and red light in their experiment if they want to measure activity at different wavelengths because these colors are absorbed in the 550 nm to 600 nm wavelength range. This means that the energy from these colors is absorbed by the chloroplasts and cannot be used for photosynthesis. Violet light, on the other hand, is not absorbed in this wavelength range so it can be used by the chloroplasts for photosynthesis. Therefore, it should not be avoided.
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the work done by the brakes during braking is equal to
Answer:
The amount of pressure delivered to them
Explanation:
Place thermometers near the edge of the table for easy retrieval. True or False
Answer:
This depends on the type of the thermometer, but when working with glass thermometers, (Hg especially) you should not put them near the edge of the table.
This is because it will easier to accidentally touch it and throw it into the ground, breaking the thermometer.
This is bad not only for the material loss of the lab instrument, but also because the mercury inside the thermometer is dangerous, so you really want to keep the thermometers in a safe place.
Then this would be false, do not leave the thermometers near the edge of the table (or in any place where it can fall and break)
how can you take my step sis out the washer machine?
From what I have seen, you do not take your step sis out of the washing machine, you ask her if she has games on her phone and play mine craft like a god obv.
A downhill skier reaches the steepest part of a trail. Her speed increases from 9 m/s to 18 m/s in 3 seconds. What is her average acceleration
Answer:
3m/s²
Explanation:
final velocity - initial velocity
______________________ = Acceleration
elapsed time
A downhill skier reaches the steepest part of a trail. Her speed increases from 9 m/s to 18 m/s in 3 seconds. Her average acceleration is 3 m/sec².
What is acceleration?The rate at which an item changes its velocity is known as acceleration, a vector quantity. If an object's velocity is changing, it is acceleration.The net acceleration that objects get as a result of the combined action of gravity and centrifugal force is known as the Earth's gravity, or g. It is a vector quantity whose strength or magnitude is determined by the norm and whose direction correlates with a plumb bob.
Average acceleration = (18 -9)/3 = 3 m/sec²
A downhill skier reaches the steepest part of a trail. Her speed increases from 9 m/s to 18 m/s in 3 seconds. Her average acceleration is 3 m/sec².
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What can you tell a flat earth believer
Answer:
that the earth isnt flat
Explanation:
A concrete parking garage has a 6-in concrete slab at each level. The 6-in slab weighs 75 psf (NOTE : psf =lb/ft∧2). If the columns are placed on a rectangular grid with 25−ft spacing in the long direction and 20 - t spacing in the short direction. What is the concentrated reaction to the column due to the weight of the slab on a single level? Assume all framing is simply supported, with a regular spacing, and equal reactions at each end . ( 25 Points) 37,500lb 30.000lb 225,000fo 46675lb
The concentrated reaction to the column due to the weight of the slab on a single level is 37,500 lb.
To calculate the concentrated reaction to the column, we need to determine the total weight of the slab on a single level.
Given that the weight of the 6-inch concrete slab is 75 psf (pounds per square foot), we first convert it to pounds per square inch (psi) by dividing by 144 (since 1 square foot is equal to 144 square inches).
Weight of slab per unit area = 75 psf / 144 = 0.5208 psi
Next, we calculate the area of the slab on a single level by multiplying the spacing in the long direction (25 ft) by the spacing in the short direction (20 ft).
Area of slab = 25 ft * 20 ft = 500 sq. ft
Finally, we multiply the weight per unit area by the area of the slab to find the total weight of the slab on a single level.
Total weight of slab = 0.5208 psi * 500 sq. ft = 260.4 lb
Therefore, the concentrated reaction to the column due to the weight of the slab on a single level is 37,500 lb.
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how does electricity work?
Answer:Electricity works by getting a bunch of conductor elements together and creating a flow of electron-stealing patterns through them. This flow is called a current. ... Once you can control the direction the electrons are going, you can use them to power or charge anything from a light bulb to your TV to your electric car.
Explanation:trust
Clara's grandfather is a captain of a cargo ship. He prefers to navigate his ship through the moderate neap tides. At these times, the line between Earth and the sun is at a right angle to the line between Earth and the moon. Which phase or phases of the moon describe this alignment?
Answer:
The phases are the first and third quarters.
Explanation:
During the first quarter of the moon phases, the line between Earth and the Sun is at a right angle to the line between Earth and the moon. At this time the moon has completed the first quarter of its orbit around the earth. At this point, half of the moon is fully reflecting light from the sun.
Also during the third quarter which is the last quarter, the line between the earth and the sun is at a right angle to the line between the earth and the moon. This is the time when the second half of the moon which was not illuminated during the first quarter becomes completely illuminated.
The function =pmt(c5,c7,-c3) is stored in cell c15. What must be stored in cell c5?
When function =pmt(c5,c7,-c3) is stored in cell c15. Cell c5 must contain a Periodic interest rate.
We know that periodic interest rate is the rate that is realized on an investment, or loan over a specific period of time. Basically, the periodic rate is the annual interest rate divided by the number of periods.
In Excel the syntax of Rate Function is RATE(nper, pmt, pv, [fv], [type], [guess]), where pv stands for the loan amount, nper is the period of payment and pmt is the periodic payment.
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An electric fan is running on HIGH. After the LOW button is pressed, the angular speed of the fan decreases to 84.7 rad/s in 2.96 s. The magnitude of the angular deceleration is 47.2 rad/s2. Determine the initial angular speed of the fan.
The initial angular speed of the fan will be 55.0 rad/sec. The angular speed of the fan decreases to 84.7 rad/s in 2.96 s.
What is angular acceleration?Angular acceleration is defined as the pace of change of angular velocity with reference to time.
Given data;
Final angular speed,\(\rm \omega_f = 84.7 rad/s\)
Initial angular speed, \(\rm \omega_i = ?\)
Time period,t= 2.96 s
Angular deceleration = 47.2 rad/s²
\(\rm \alpha =\frac{\omega_f-\omega_i}{t} \\\\\rm 47.2 =\frac{84.7-\omega_i}{2.96} \\\\ \omega_i = 55.0 \ rad/sec\)
Hence the initial angular speed of the fan will be 55.0 rad/sec.
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Express 48 m/s in terms of
1.km/h
2.m/min
3.km/s
4.km/minutes
48 m/s in terms of km/h is 720.8 km/h. In terms of m/min is 2880 m/min, in terms of km/s is 0.048 km/s and in terms of km/min is 2.88 km/min.
To solve this question, we need to understand some terms. The unit of velocity is measured in m/s. It can be expressed in different units of velocity.
1 km (kilometer) = 1000 meter
1 h (hour) = 3600 seconds
1 minutes = 60 seconds
To convert m/s into km/h,
48 m/s * 3600/1000 = 172.8 km/h
To convert m/s into m/min,
48 m/s * 60 = 2880 m/min
To convert m/s into km/s,
48 m/s ÷ 1000 = 0.048 km/s
To convert m/s into km/minutes,
48 m/s * 60 / 1000 = 2.88 km/min
Therefore, the 48 m/s expressed is 172.8 km/h, 2880 m/min, 0.048 km/s and 2.88 km/min.
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48 m/s is equivalent to 172.8 km/h, 2880 m/min, 0.048 km/s, and 2.88 km/minute.
To express 48 m/s in different units of velocity:
km/h (kilometers per hour):
To convert m/s to km/h, we can use the conversion factor of 3.6 since 1 m/s is equal to 3.6 km/h.
48 m/s * (3.6 km/h / 1 m/s) = 172.8 km/h
Therefore, 48 m/s is equivalent to 172.8 km/h.
m/min (meters per minute):
To convert m/s to m/min, we can use the conversion factor of 60 since there are 60 seconds in a minute.
48 m/s * (60 m/min / 1 s) = 2880 m/min
Therefore, 48 m/s is equivalent to 2880 m/min.
km/s (kilometers per second):
Since 1 kilometer is equal to 1000 meters, to convert m/s to km/s, we divide the value by 1000.
48 m/s / 1000 = 0.048 km/s
Therefore, 48 m/s is equivalent to 0.048 km/s.
km/minute (kilometers per minute):
To convert m/s to km/minute, we first need to convert m/s to km/s (as calculated in the previous step) and then multiply by 60 to convert seconds to minutes.
0.048 km/s * 60 = 2.88 km/minute
So, 48 m/s is equivalent to 2.88 km/minute.
Hence, 48 m/s is equivalent to approximately 172.8 km/h, 2880 m/min, 0.048 km/s, and 2.88 km/minute.
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If a rock is thrown
with an initial velocity of 5.4 m/s in the y-
direction and 8.2 m/s in the x-direction.
At what angle was the rock thrown?
The angle at which the rock was thrown is 33.37°.
What is angle?An angle is formed when two rays are joined together at a common point.
To calculate the angle at which the rock was thrown, we use the formula below.
Formula:
∅ = tan⁻¹(Vy/Vx)................ Equation 1Where:
∅ = Angle at which the rock was thrownVy = Velocity of the rock in y- directionVx = Velocity of the rock in x-directionFrom the question,
Given:
Vy = 5.4 m/sVx = 8.2 m/sSubstitute these values into equation 1
∅ = tan⁻¹(5.4/8.2)∅ = tan⁻¹(0.6585)∅ = 33.37°Hence, the angle is 33.37°.
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calculate the magnitude (in m/s2) of the centripetal acceleration at the tip of a 3.20 m long helicopter blade that rotates at 205 rev/min. m/s2
The magnitude of the centripetal acceleration at the tip of a 3.20 m long helicopter blade that rotates at 205 rev/min is 1,474.7 m/s2
The acceleration that a body experiences when moving around in a circle is known as centripetal acceleration. Since velocity is a vector quantity (that is, it possesses both a magnitude, which is the speed, and a direction), when a body travels on a circular path, its direction is constantly changing, and as a result, its velocity is changing as well, which results in an acceleration. The acceleration is exerted in a radial direction that is directed toward the center of the circle. To calculate the centripetal acceleration, we can use this following formula:
Ac = v² ÷ r
V = ωr
Ac = (ωr)² ÷ r
Ac = ω²r
ω = 205 rev/min = 21.47 rad/s
r = 3.20 m
Next, we can substitute the required values to find the centripetal acceleration:
Ac = (21.47 rad/s)² × 3.20 m
Ac = 1,474.7 m/s²
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Una bombilla conectada a 220 V, que tiene una potencia de 100 W, esta encendida una media 3 horas al dia. Calcula la energia en kWh y en Joules, que consume durante el mes de noviembre
Answer:
La energía que la bombilla consume durante el mes de noviembre es 0,3 kWh o 1.080.000 Joules.
Explanation:
La energía eléctrica consumida por un aparato eléctrico es el producto de la potencia eléctrica (P) y la duración del tiempo utilizado (t)
E = P*t
En este caso, la potencia eléctrica tiene un valor de 100 W. Siendo 1 W equivalente a 0,001 kW, entonces 100 W es igual a 0,1 kW. Por lo que la energía puede ser calculada como:
E= 0,1 kW*3 horas
E= 0,3 kWh
El kWh es una unidad de medida que se emplea para contabilizar el consumo eléctrico que se ha realizado durante un periodo de tiempo. El kWh mide el consumo de energía en kilovatios hora o kilowatts hora.
1 kW equivale a 3.600.000 Joules. Entonces el consumo de energía igual a 0,3 kWh equivale a 1.080.000 Joules
La energía que la bombilla consume durante el mes de noviembre es 0,3 kWh o 1.080.000 Joules.
A wave has a velocity of 24 m/s and a frequency of 4.3 Hz. What is the wavelength of the wave? (type your answer including your units.
Taking into account the definition of wavelength, frecuency and propagation speed, the wavelength of a wave with a frequency of 4.3 Hz and a velocity of 24 m/s is 5.581 m.
WavelengthWavelength is the distance between two points corresponding to the same phase in two consecutive waves. It is expressed in units of length (m).
FrequencyFrequency is the number of vibrations that occur in a unit of time. Its unit is s⁻¹ or hertz (Hz).
Propagation speedThe propagation speed is the magnitude that measures the speed at which the wave disturbance propagates along its displacement.
The propagation speed relate the wavelength (λ) and the frequency (f) inversely proportional using the following equation:
v = f×λ
Wavelength of the wave in this caseIn this case, you know:
v= 24 m/sf= 4.3 Hzλ= ?Replacing in the definition of propagation speed:
24 m/s= 4.3 Hz× λ
Solving:
λ= 24 m/s÷ 4.3 Hz
λ= 5.581 m
In summary, the wavelength of the wave is 5.581 m.
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Jane spent 3 hours exploring a mountain with a dirt bike First, she rode 72 miles uphill After she reached the peak she rode for 21 miles along the summit While going uphill, she went 5 mph slower than when she was the summit What was her rate along the summit?
Jane's rate along the summit was 25 mph.
Let's assume that Jane's rate along the summit is represented by the variable "x" in miles per hour. We know that she rode 72 miles uphill at a rate that was 5 mph slower than her rate along the summit. Therefore, her rate uphill would be (x - 5) mph.
To find her average rate for the entire journey, we can calculate the total time taken for each segment and divide it by the total distance covered.
Time taken to ride uphill = Distance / Rate
Time taken to ride uphill = 72 miles / (x - 5) mph
Time taken to ride along the summit = Distance / Rate
Time taken to ride along the summit = 21 miles / x mph
Since the total time taken for the entire journey is 3 hours, we can write the equation:
Time taken to ride uphill + Time taken to ride along the summit = Total time
72 / (x - 5) + 21 / x = 3
By solving this equation, we find that x = 25 mph. Therefore, Jane's rate along the summit was 25 mph.
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A large box is pushed by a person with a force
F
as shown in the figure. The angle θ=25
∘
. What is the magnitude of the force that is needed to keep the box moving at constant velocity if the mass of the box is m=23.0 kg and the coefficient of kinetic friction between the box and the floor is 0.30 ?
The magnitude of the force needed to keep the box moving at a constant velocity is approximately 101.36 N.
To find the magnitude of the force needed to keep the box moving at a constant velocity, we need to consider the forces acting on the box. These forces include the force applied by the person (F), the force of gravity (mg), the normal force (N), and the force of kinetic friction .
The force of gravity acting on the box is given by mg, where m is the mass of the box and g is the acceleration due to gravity (approximately 9.8 m/s²).
The normal force is the perpendicular force exerted by the floor on the box. It is equal in magnitude and opposite in direction to the force of gravity, which is N = mg. The force of kinetic friction can be calculated using the equation: = μk * N
where μk is the coefficient of kinetic friction and N is the normal force. In this case, the force applied by the person (F) can be resolved into two components: Fcosθ in the horizontal direction and Fsinθ in the vertical direction.
To maintain constant velocity, the force applied horizontally (Fcosθ) must balance the force of kinetic friction. Therefore, we have:Fcosθ = substituting the values into the equation: Fcosθ = μk * N Fcosθ = μk * mg
Finally, we can solve for the magnitude of the force (F) using the equation: F = (μk * mg) / cosθ Substituting the given values: F = (0.30 * 23.0 kg * 9.8 m/s²) / cos(25°) F ≈ 101.36 N
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In fish BB-blue, BW-blue with white stripes, WW-white. Cross a white fish with a fish with blue and white stripes. What is the probability of having white fish offspring?
Answer: Juvenile fish go through various stages between birth and adulthood. When they have developed to the point where they are capable of feeding themselves, the fish are called fry. When, in addition, they have developed scales and working fins, the transition to a juvenile fish is complete and it is called a fingerling.
Date
Page
710
Amachine raises a load of 750N
through a height
of 16m in 5 sec
calculate
a) work done by machine
b) Power of machine
Answer:
W=F×H,Power=W/Time
Explanation:
W=Force ×Height
750N×16 =12000
Power=Work/Time
12000/5=2400J
a closed system is observed to have 39 objects in it. initially, the total energy of the system is 6507 j. after 5.3 h have passed, how much total energy will the system contain?
In a closed system with 39 objects, the total energy initially is 6507 J. After 5.3 hours, the total energy of the system will remain the same in accordance with the law of conservation of energy.
According to the law of conservation of energy, the total energy in a closed system remains constant unless there is an external energy transfer. In this case, the closed system consists of 39 objects, and initially, it has a total energy of 6507 J. The law of conservation of energy states that the total energy of the system will remain constant over time. Therefore, after 5.3 hours have passed, the total energy of the system will still be 6507 J.
Since no information is given about any energy transfers or external influences on the system, we can conclude that the system is isolated and no energy is added or removed from it. Thus, the initial energy of 6507 J will be retained after 5.3 hours. It is important to note that this conclusion assumes an ideal closed system with no energy exchanges with the surroundings. In practical situations, factors such as energy dissipation, friction, and other external influences may cause some energy loss or gain in the system.
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can a system have kinetic and potential energy at the same time
Answer:
yes
Explanation:
...........................
Describe what a high and low frequency electromagnetic wave look like:
We have that for the Question "Describe what a high and low frequency electromagnetic wave look like:" it can be said that
A high frequency wave will have shorter wavelength whereas a low frequency wave will have long wavelengthA high frequency wave will have shorter period whereas a low frequency wave will have long periodA high frequency wave will be Faster whereas a low frequency wave will have slower
From the question we are told
Describe what a high and low frequency electromagnetic wave look like:
Generally the equation for the frequency is mathematically given as
\(f=\frac{1}{t}\\\\and\\\\f=\frac{v}{\lambda}\\\\\)
Therefore
A high frequency wave will have shorter wavelength whereas a low frequency wave will have long wavelengthA high frequency wave will have shorter period whereas a low frequency wave will have long period
A high frequency wave will be Faster whereas a low frequency wave will have slower
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(Celestial body all natural bodies visible in the sky outside the earth atmosphere constitute the celestial bodies example stars planets their moon comet asteroid meteors)
Is artificial satellite a Celestial body
Celestial bodies are natural bodies so can we say artificial satellite is not a Celestial body??
An artificial satellite can be called a celestial body as it orbits around a planet.
Objects in space such as the sun, moon, planets, and stars are known as celestial bodies or heavenly bodies. Satellites are revolving bodies that orbit planets. They are the fundamental component of celestial bodies. These could be transmitted by humans or be of natural origin.
The moon orbits the earth as a natural satellite because it is held in place by the gravity of the planet. Additionally, man has positioned artificial or man-made satellites in orbit around the earth and other planets for communication and scientific research.
As a artificial satellite also orbits around a natural celestial body, it can be called as a celestial body.
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You throw a ball horizontally from the top of a building, with a speed of 3 m/s. In this problem, you can neglect the force of air resistance. After 2 Seconds, what is the balls horizontal velocity?
The horizontal velocity of the ball remains constant and unchanged.
When you throw a ball horizontally with a speed of 3 m/s, its horizontal velocity will be 3 m/s, even after 2 seconds have passed. In this problem, neglecting the force of air resistance means that there will be no external forces acting on the ball that would alter its horizontal velocity.
Since velocity is a vector quantity (having both magnitude and direction), the horizontal velocity of the ball remains constant at 3 m/s in the horizontal direction.
Now, if we consider the vertical motion of the ball, it will be subject to the force of gravity, which will cause it to accelerate downwards at a rate of 9.8 m/s^2 (the acceleration due to gravity near the surface of the Earth).
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the ability of your muscles to exert force for an extended period of time
Answer:
Muscular endurance
Explanation:
If you pull a pendulum with a mass of 7.4 kg back at an angle of 13°, what is the magnitude of the restoring force on it?
When the pendulum is brought back at an angle of 13°, there is a about 1.67 N restoring force on it.
What force is the restoring force in a straightforward pendulum in straightforward harmonic motion?A simple pendulum's restoring force is directed towards the mean position when it moves in a simple harmonic motion (lowest point). Here, the force of gravity acts as the restoring force at the centre of mass of the bob.
f_restoring = -m * g * sin(θ)
Where:
m = 7.4 kg (mass of the pendulum), g = 9.8 m/s^2 (acceleration due to gravity), θ = 13° (angle of displacement)
Converting the angle to radians:
θ = 13° * (π / 180) = 0.226 rad
Substituting the values into the equation:
f_restoring = -7.4 kg * 9.8 m/s^2 * sin(0.226 rad) = -7.4 kg * 9.8 m/s^2 * 0.226 = -1.67 N
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