The correct options are :
The scattered photon has a longer wavelength than the incident photon.
The scattered photon has less energy than the incident photon.
What is an atom and a proton ?An atom is a unit of matter that specifically characterizes a chemical element. One or more negatively charged electrons surround the core nucleus of an atom, which is made up of all of them. One or more protons and neutrons, which are comparatively heavy particles, can be found in the positively charged nucleus.
One down quark and two up quarks make up protons. Two down quarks and one up quark make up neutrons.
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Given small samples of three liquids, you are asked to determine their refractive indexes. However, you do not have enough of each liquid to measure the angle of refraction for light refracting from air into the liquid. Instead, for each liquid, you take a rectangular block of glass (n= 1.52) and place a drop of the liquid on the top surface of the block. You shine a laser beam with wavelength 638 nm in vacuum at one side of the block and measure the largest angle of incidence for which there is total internal reflection at the interface between the glass and the liquid (Figure 1). Your results are given in the table (Figure 2). What is the refractive index of liquid A at this wavelength? What is the refractive index of liquid B at this wavelength? What is the refractive index of liquid C at this wavelength?
At this wavelength, liquid A has a refractive index of 1.4 for liquid A, liquid C has a refractive index of 1.4, and liquid B has a refractive index of 1.35 for liquid A.
In optics, an optical medium's refractive index, also known as refraction index, is a dimensionless number that indicates how well the medium bends light. How much light is bent or refracted when it enters a material depends on the material's refractive index.
In physics, the wavelength is the length over which a periodic wave repeats, or its spatial period. It is the separation between adjacent spots on a wave that correspond to the same phase. Is called wavelength.
TETHTA = 36.3
366.3 = SIN^-1(1.52^2 - Nc^2)
36.3 = sin^-1(1.52^2 - Nc^2)
Nc = (1.52^2 - (sin36.3^2) = 1.399 = 1.4
Nc = 1.4
similarly, for A and B the refractive index of liquid.
Nb = 1.35, Na = 1.4
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How fast would a light beam appear to einstein if he were traveling in the same direction at 90% of the speed of light?.
If Einstein were traveling in the same direction of a light beam at 90% of the speed of light, the light beam would be travelling at 10% of speed of light.
Speed of light, c = 3 * 10⁸ m / s
90 % of Speed of light = 3 * 10⁸ * 0.9
90 % of Speed of light = 2.7 * 10⁸ m / s
Relative speed = 3 * 10⁸ - 2.7 * 10⁸
Relative speed = 0.3 * 10⁸ m / s
Relative speed = 0.1 c = 10% of speed of light
Relative speed of one object with respect to another is the difference in speeds of both objects if they are travelling in same direction. Relative speed of one object with respect to another is the sum of speeds of both objects if they are travelling in opposite direction.
Therefore, if Einstein were traveling in the same direction of a light beam at 90% of the speed of light, the light beam would be travelling at 10% of speed of light.
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If the cell i 1. 5V & there are 4 cell - what i the total potential difference (in volt) of the circuit?
If the cell of 1.5 volts have 4 cells then the potential difference of the circuit is 6 volts.
As per question,
Voltage of each cell = 1.5 volts.
Number of cell = 4
Potential difference = 4 x 1.5
= 6 volts.
The potential difference between any two points in a circuit represents the variation in the energy that charge carriers have accessible. Volts are measured as follows: Voltage is measured in volts and is defined as the potential difference (V). The phrase used to describe the external work required to convey a charge from one point to another in an electric field is electric potential difference, which is frequently referred to as voltage. A battery's potential difference is equal to the sum of the potential differences of all of the electrical cells that make up the battery, which are connected in series. The resultant potential difference is the potential difference of the battery.
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What force must be exerted on the master cylinder of a hydraulic lift to support the weight of a 2000-kg car (a large car) resting on a second cylinder? the master cylinder has a 2. 00-cm diameter and the second cylinder has a 24. 0-cm diameter.
The force that must be exerted on the master cylinder of a hydraulic lift to support the weight of a 2000-kg car (a large car) resting on a second cylinder is 141.56 N
According to Pascal's law, when a change in pressure is applied to an enclosed fluid, it is transmitted undiminished to all portions of the fluid and to the walls of its container. In an enclosed fluid, since atoms of the fluid are free to move about, they transmit pressure to all parts of the fluid and to the walls of the container. Any change in pressure is transmitted undiminished.
F1 / A1 = F2 / A2
F = m g
A = π r²
F2 = 2000 * 9.8
F2 = 19600 N
A1 = 3.14 * 0.02²
A1 = 0.0013 m²
A2 = 3.14 * 0.24²
A2 = 0.18 m²
F1 / 0.0013 = 19600 / 0.18
F1 = 141.56 N
Therefore, the force that must be exerted on the master cylinder is 141.56 N
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Fluorescent dyes in clothing can absorb ultraviolet light and then convert it to visible light. Is it possible to make a dye that absorbs visible light and then emits ultraviolet?.
Fluorescent dyes can absorb ultraviolet light and then convert it to visible light of longer wavelengths. But a dye absorbs visible light and then emits ultraviolet cannot be possible.
What is Fluorescence?Fluorescence can be described as the emission of light by a substance that has absorbed electromagnetic radiation. The emitted light has a longer wavelength, and therefore a lower energy of photon than the absorbed radiation.
Fluorescence occurs when the radiation from the ultraviolet region of the electromagnetic spectrum is absorbed, while the emitted light is in the visible region. The fluorescent substance has a distinct color when the substance has been exposed to UV light.
Fluorescent materials stop glowing immediately when the radiation source is removed, unlike phosphorescent materials, which continue to emit light for some time after the radiation source stops.
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for what incident angle is light reflected from the surface of this glass completely polarized if the glass is immersed in air?
The incident angle that light reflected from the surface of this glass completely polarized if the glass is immersed in air is called Polarization Angle.
Polarization AngleBrewster's angle, also known as the polarization angle, is the incidence angle at which light with a specific polarization is perfectly transmitted through a clear dielectric surface without reflection. When unpolarized light strikes the surface at this angle, the light reflected from the surface is perfectly polarized. This unique incidence angle is named after the Scottish physicist Sir David Brewster (1781–1868).
Brewster's angle is commonly known as the "polarizing angle" because light that reflects from a surface at this angle is completely polarized perpendicular to the plane of incidence ("s-polarized"). Therefore, a glass plate or stack of glass plates placed at Brewster's angle in a light beam can function as a polarizer.
THE CONCEPT
The concept of a polarizing angle can be extended to the concept of a Brewster wave number in order to account for planar interfaces between two linear bianisotropic materials. In Brewster's angle reflection, the reflected and refracted rays are mutually perpendicular.
Brewster's angle can only exist for one of the incident wave polarizations in magnetic materials, as specified by the relative strengths of dielectric permittivity and magnetic permeability. This has ramifications for the presence of Brewster angles that are generalized for dielectric metasurfaces.
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in class, we measured the period of the large hz amp pendulum (the bowling ball hanging from the ceiling) and found a value of 5.5 s. what is the length of the cord that holds the bowling ball in m? ignore damping due to air drag.
The length of the cord that holds the bowling ball is 7.52 m.
A pendulum is made when the bowling ball hanging from the ceiling. Under the influence of gravity, the pendulum can swing back and forth. The period for a pendulum depends on the length of the cord and the acceleration due to gravity.
[tex]T = 2 \pi \sqrt{\frac{L}{g}}[/tex]
π = 3.14L = the length of the cord (m)g = acceleration due to gravity = 9.8 m/s²T = the period of a pendulum (s) = 5.5 sT² = 4π² ×L/g
T²g = 4π² L
5.5² × 9.8 = 4 × 3.14² × L
30.25 × 9.8 = 4 × 9.8596 × L
L = 296.45 ÷ 39.4348
L = 7.52 m
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two sound waves produce a beat frequency of 5 hz. if one of the original frequencies is 227 hz, what could be the other frequency?
A 5 hz beat frequency is created by two sound waves. One frequency is 264 Hz if one of the original frequencies was 227 Hz. It follows that the other frequency must be 269 Hz.
fbeat = I f2 - f1 I
we have fbeat = 5 Hz.
and one frequency is 264 Hz So, other frequency must be 269 Hz
therefore difference in frequencies will be equal to 5Hz = fbeat.
A phenomenon known as "beating" or "producing beats" occurs when two sound waves of different frequencies come close to your ear and interfere in a manner that alternates between being constructive and destructive. The absolute difference between the two waves' frequencies is what determines the beat frequency.Like sound, light, radio, or ultraviolet waves, all of our thoughts and feelings have a certain frequency. Whether we're conscious of it or not, whatever we think about or feel becomes real.
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Describe the water cycle. Use the terms gravity, energy from the sun, evaporation, condensation, precipitation, runoff, and storage in your explanation.
There are four main parts to the water cycle are Evaporation, Convection, Precipitation and Collection.
What is water cycle ?The movement of water from the surface of the Earth to the atmosphere and back is modelled by the water cycle. Liquid water evaporates as a result of the Sun's energy becoming water vapor. When water vapour rises into the atmosphere, it cools, condenses, and eventually turns into ice crystals or tiny liquid droplets.
Clouds develop during this condensation-related process. Water can be released from clouds as precipitation, returning from the atmosphere to the surface of the Earth. The water may evaporate from the surface and find its way into groundwater or other types of storage reservoirs.
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question the two blocks eventually stop and reverse direction. which of the following graphs best predicts the acceleration of block a as it moves up and down the rough, inclined surface? assume that the positive direction points down the slope.
The two blocks eventually stop and reverse direction. The following graphs best predicts the acceleration of block a as it moves up and down the rough, inclined surface. Graph that looks like as shown below but all on the positive portion.
What is acceleration?
Acceleration, rate at which velocity changes with time, in terms of both speed and direction. A point or an object moving in a straight line is accelerated if it speeds up or slows down.
Which tells us speed and direction?Velocity tells the speed and direction of a moving object. Acceleration tells us the rate speed or direction changes.
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write a function swaparrayends() that swaps the first and last elements of the function's array parameter. ex: sortarray
The function for SwapArrayEnds is given below.
Algorithm
1. Define an array and all of its components.
2. Design a function with two pointer variables as parameters.
3. Prior to calling this procedure, make a temporary variable. The value from the first pointer is then assigned to this temporary variable.
4. The value at the first pointer now becomes that at the second pointer.
5. The value of the temporary variable is then changed at the second pointer.
6. In order to swap an element, follow these steps, and pass two pointer variables pointing to the element you want to swap to the main() function.
The code for the implementation of the SwapArrayEnds method is given below.
#include<stdio.h>
vid SwapArrayEnds(int sortArray [], int SORT_ARR_SIZE){
//Declare tempVariable as an integer type
if(SORT_ARR_SIZE > 1) {
tempVariable = sortArray[0];
sortArray[0] = sortArray[SORT_ARR-SIZE-1];
sortArray[SORT_ARR_SIZE -1] = tempVariable;
}
}
int main(void){
const int SORT_ARR_SIZE = 4;
int sortArray[SORT_ARR_SIZE];
int i = 0;
sortArray[0] = 10;
sortArray[1] = 20;
sortArray[[2] = 30;
sortArray[3] = 40;
SwapArrayEnds ( sortArray[, SORT_ARR_SIZE);
for( i =0; i < SORT_ARR_SIZE; ++i){
printf("%d", sortArray[i]);
}
printf("\n');
return 0;
}
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a grinding wheel is initially rotating with an angular velocity 3000 rad/s when its motor is suddenly turned off. it comes to rest in 10 s . through what angle did it rotate during the first second after the motor was turned off?
Angle through which the grinding wheel rotates in the first second =2850 rad.
What are the Calculations?
Given ,
initial angular velocity of the grinding wheel (ω₁) = 3000rad/s
final angular velocity (ω₂) = 0rad/s ( comes to rest )
Time taken by the grinding wheel to come to rest( T) = 10sec
final angular velocity = initial angular velocity of the grinding wheel + Angular acceleration of the grinding wheel (α)× Time taken by the grinding wheel to come to rest
0= 3000 + α × 10
Therefore , C of the grinding wheel (α) = - 300rad/sec²
Negative as it is deceleration .
Angle through which the grinding wheel rotates in the first second =θ
Time period T₁= 1sec
θ =ω₁T₁+αT₁²/2
θ = (3000)(1) +(-300)(1)²/2
θ = 2850rad
Angle through which the grinding wheel rotates in the first second =2850rad
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Part A
Use these relationships to determine the number of calories to change 0.50 kg of 0°C ice to 0°C ice water.
Part B
Use these relationships to determine the number of calories to change 0.50 kg of 0° C ice water to 0.50 kg of 100°C boiling water.
Part C
Use these relationships to determine the number of calories to change 0.50 kg of 100° C boiling water to 0.50 kg of 100°C steam.
Part D
Use these relationships to determine the number of calories to change 0.50 kg of 0°C ice to 0.50 kg of 100°C steam.
The relationships to determine the number of calories to change 0.50 kg of 0°C ice to 0°C ice water is 1,080,000 cal.
How does heating ice that is at C affect it?Ice melts and becomes liquid water at 0 degrees Celsius. Once all of the ice has been entirely transformed into liquid water, the temperature of the remaining ice begins to increase once more (in °C), continuing to rise until it reaches 100 °C, where it then stabilizes.
The water turns into steam when it reaches a temperature of 100 °C (D).
Water has a fusion latent heat of fusion of 80 cal/g.
Water has a 1 cal/g-C specific heat.
Water has a 540 cal/g latent heat of vaporization.
In light of this, the total amount of heat needed is 1500 g [(80 cal/g) + (1 cal/g-C)(100 - 0)C + (540 cal/g)] = 1500 g [(720 cal/g)] = 1,080,000 cal.
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Can be used to calculate the density D of an object with mass m and volume V which is an equivalent equation solved for V?.
The equivalent equation for V is V = m/d.
The density of a substance is the connection between the mass of the substance and what sort of space it takes up (quantity). The mass of atoms, their length, and how they may be organized decide the density of a substance.
Density is a vital concept because it lets us decide what materials will drift and what substances will sink whilst positioned in a liquid.
The density will increase as pressure increases. Altitude and climate structures can alternate the air's strain. As you move better, the air's strain decreases from around 1,000 millibars at sea level to 500 millibars at around 18,000 ft.
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How much current is drawn from a circuit that has a resistor of 1000 ohms if powered by a battery with 1. 5 volts *?.
The current drawn from the circuit is 0.0015 Ampere.
Solution:
v = 1.5 V
r = 1000 ohm
Using formula:
i = v/r
= 1.5 / 1000
= 0.0015 A
A resistor is an electrical component that limits or regulates the flow of current in an electronic circuit. Resistors can also be used to supply specific voltages to active devices such as transistors. The resistor slows down the flow of electrons so the current doesn't move too fast and damages things like batteries on a breadboard.
The second reason to use resistors is to slow the flow of current through the component. A passive electrical device with two terminals is used to limit or regulate the flow of current in an electrical circuit. The main purpose of resistors is to reduce current flow and reduce the voltage in certain parts of the circuit.
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The registered nurse (RN) is orienting a new RN assigned to the care of a client with a cardiac disorder and is told that the client has an alteration in cardiac output. After educating the new RN about cardiac output, which statement made by the new RN indicates the need for further instruction?
1. "A cardiac output of 2 L/min is normal."
2. "A cardiac output of 4 L/min is normal."
3. "A cardiac output of 6 L/min is normal."
4. "A cardiac output of 7 L/min is normal."
The statement made by the new registered nurse indicates the need for further instruction is : A cardiac output of 2 L/min is normal
What is a cardiac output?Heart rate (HR) and stroke volume (SV) are combined to form cardiac output, which is expressed in liters per minute. The most typical definition of HR is the number of heartbeats per minute. SV is the amount of blood that is ejected from the heart with each heartbeat or during ventricular contraction.
However, our heart typically beats 70 times per minute. In order to calculate cardiac output, which is the total amount of blood the left ventricle expels in a minute, we must multiply the stroke volume by the heart rate, or the number of beats per minute.
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the concept of pressure involves both group of answer choices area and volume. force and volume. force and area.
Pressure is a notion that includes both force and area. The amount of force applied per area is what is meant by the term pressure.
Is 'pressure' a concept?We use the notion of pressure to this concept to give it more specificity. The amount of force applied per area is what is meant by the term pressure. Consequently, in order to generate a lot of pressure, you can either use a lot of force or a lot of force distributed over a limited area (or do both).In order to measure an object's surface tension, a force must be applied perpendicularly to the object's surface over a given area. Gauge pressure is the amount of pressure in relation to the surrounding pressure. Pressure is expressed using a number of different units.To learn more about Pressure refer to:
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the stars in elliptical galaxies generally move either 1) in irregular orbits in all directions or 2) together in a particular direction as they orbit. what is the general motion for the stars in an elliptical galaxy?
Stellar orbits in elliptical galaxies are random, as opposed to spiral galaxies, where all of the stars orbit the galaxy's core in the same way.
What direction do stars in elliptical galaxies migrate in?Stellar orbits in elliptical galaxies are random, as opposed to spiral galaxies, where all of the stars orbit the galaxy's core in the same way.The majority of elliptical galaxies' star motions are currently thought to be fundamentally random; the size of the anisotropy of the stellar motions, or how much random velocities vary in different directions, determines the form of these galaxies.Ellipsoidal galaxies are round or oval in shape, as their name suggests, and contain stars that are widely spaced out.To learn more about Elliptical galaxies refer to:
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a stubborn, 120 kg mule sits down and refuses to move. to drag the mule to the barn, the exasperated farmer ties a rope around the mule and pulls with his maximum force of 800 n. the coefficients of friction between the mule and the ground are ms
The frustrated farmer ties a rope around the mule and pulls with his utmost 800 N force to drag it to the barn.
Can the farmer maneuver the mule?The mule won't be moved by the farmer.A force is a push or pull an object experiences as a result of an interaction with another object.When two objects interact, a force is applied to each one of them.After the interaction, the force is no longer felt by the two objects.We are given values where is mass, is maximum force.The frustrated farmer ties a rope around the mule and pulls with his utmost 800 N force to drag it to the barn. The mule and the ground have coefficients of friction of ms = 0.8 and mk = 0.5, respectively.To learn more about able to move the mule refer to:
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a basketball player jumps straight up for a ball. to do this, he lowers his body 0.34 m and then accelerates through this distance by forcefully straightening his legs. this player leaves the floor with a vertical velocity sufficient to carry him 0.77 m above the floor.
The velocity at which he leaves the floor is 4.25 m/s.
The kinematic expression is as follows:
v² = u² - 2as
where
u = initial velocity
v = final velocity
s = distance
g = acceleration due to gravity .
when he reaches a height of 0.77 m above the floor the final velocity = 0
acceleration due to gravity act opposite the initial direction of motion. So, -9.81 m/s.
v² = u² + 2as
0² - u² = 2 (- 9.81) × 0.77
- u² = 2 × - 9.81 × 0.77
multiply both sides by -1
u² = 2 × 9.81 × 0.77
u² = 15.107
u = √15.107
u = 4.2485762321
u = 4.25 m/s
The velocity at which he leaves the floor is 4.25 m/s.
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[NOTE : THIS QUESTION IS INCOMPLETE. THE COMPLEE QUESTION IS:
a basketball player jumps straight up for a ball. to do this, he lowers his body 0.34 m and then accelerates through this distance by forcefully straightening his legs. this player leaves the floor with a vertical velocity sufficient to carry him 0.77 m above the floor. Calculate his velocity (in m/s) when he leaves the floor.]
find the mass of water at 10oc that must be added to 300 kg of water at 50oc to lower its temperature to 40oc.
The mass of water is 0.01012 kg.We know that the heat lost by mercury, Q equals heat gained by water, Q'-Q = Q'
Find the mass of water ?Where Q = mc(T - T') where m = mass of mercury = 1.94 kg, c = specific heat capacity of mercury = 139.5 J/kg °C, T' = initial temperature of mercury = 200 °C and T' = final temperature of mercury = 100 °C (since this is the temperature at which the water will boil).Also, Q' = Q" + Q"' where Q" = m'c'(T - T") where m = mass of water = 0.05 kg, c = specific heat capacity of water = 4200 J/kg °C, T" = initial temperature of water = 80 °C and T' = final temperature of water = 100 °C (since this is the temperature at which the water will boil).Also, Q'" = m"L where m" = mass of evaporated water and L = latent heat of vaporization of water = 2.26 × 10⁶ J/kgMaking m" subject of the formula, we have
m" = -[mc(T - T') + m'c'(T - T")]/L
m" = -[270.63 J/ °C(-100 °C) + 210 J/ °C (20 °C)]/2.26 × 10⁶ J/kg
m" = 22863 J/2.26 × 10⁶ J/kg
m" = 0.010116372 kg
m" ≅ 0.01012 kg
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a certain amount of nobr(g) is sealed in a flask, and the temperature is raised to 350 k. the following equilibrium is established: nobr(g) uv no(g) 1 12 br2(g) the total pressure in the flask when equilibrium is reached at this temperature is 0.675 atm, and the vapor density is
The partial pressures of each species of the equilibrium are
NOBr = 0.39 atmNO = 0.19 atmVapour density = 2.219 g / L
Temperature = 350 K
Total pressure = 0.675 atm
Since volume of flask is constant and the mass is conserved,
Initial mass of NOBr = 2.219 g
1 mol NOBr = 109.92 g
Number of moles of NOBr = 2.219 / 109.92 = 0.02019 mol
Total number of moles at equilibrium is,
[tex]n_{total}[/tex] = ( 0.02019 - x ) + x + 0.5 x
[tex]n_{total}[/tex] = 0.02019 + 0.5 x
Acording to ideal gas equation.
[tex]n_{total}[/tex] = P V / R T
[tex]n_{total}[/tex] = ( 0.675 * 1 ) / ( 0.08206 * 350 )
[tex]n_{total}[/tex] = 0.00662
Partial pressure of NOBr,
P = ( 0.02019 - x ) * 0.675 / ( 0.02019 + 0.5 x )
P = 0.39 atm
Partial pressure of NO,
P = x * 0.675 / ( 0.02019 + 0.5 x )
P = 0.19 atm
Partial pressure of Br₂,
P = 0.5 x * 0.675 / ( 0.02019 + 0.5 x )
P = 0.095 atm
Therefore, the partial pressures of
NOBr = 0.39 atmNO = 0.19 atmBr₂ = 0.095 atmThe given question is incomplete. The complete question is:
A certain amount of NOBr(g) is sealed in a flask, and the temperature is raised to 350 K. The following equilibrium is established:
NOBr(g) ↔ NO(g) + ½ Br2(g)
NOBr(g)↔NO(g)+½Br2(g)
The total pressure in the flask when equilibrium is reached at this temperature is 0.675 atm, and the vapor density is 2.219 g L^-1. Calculate the partial pressure of each species.
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Block A hangs from a light string that passes over a light pulley and is attached to block B, which is on a level horizontal friction less table, as shown above. Students are to determine the mass of block B from the motion of the two-block system after it is released from rest. They plan to measure the time block A takes to reach the floor. The students must also take which of the following measurements to determine the mass of block B? a) Only the mass of block A; b) Only the mass of block A and the distance block A falls to reach the floor; c) Only the distance block A falls to reach the floor; d) The mass of block A, the distance block A falls to reach the floor, and the radius of the pulley
The students should take the measurement of only the distance covered block A while falling to reaching to the ground. Thus, option (c) is correct.
According to Newton's Law:
For Block A:
The forces on block A is tension upwards and force downwards.
Tension = T
Force = mₐ × g
Thus, equating the forces =
= mₐ × g = T + mₐ × a
Then, tension =
= T = (mₐ × g) - (mₐ × a)
= T = mₐ (g - a) [ Let this be equation 1]
For block B:
Tension = mₓ × g
= T = mₓ × g [Let this be equation 2]
Equation equation 1 and 2,
= mₓ × g = mₐ (g - a)
= mₓ = mₐ (g - a) / g
= mₓ = mₐ ( g/a - 1) [Let this be equation 3]
Now, let the distance of fall be = d
The time taken for the fall be = t
Then, the acceleration starting from the rest will be (a) =
= d = (v × t )+ (1/2 × a × t²)
Here, v = 0 m/s as the fall starts from rest
= d = (1/2 × a × t²)
= a = 2 × d / t²
Substituting this is equation 3 =
= mₓ = mₐ ( (g × t²/2×d) - 1)
Hence, the distance of the fall that block A used is required to determine the masses of the blocks.
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mr. smith frequently fails to notice that students at the back of the room pass notes and tease each other. subsequently, more students get off-task. mr. smith is deficient in
Mr. Smith frequently misses the fact that the students in the back of the room joke around and pass notes. Mr. Smith lacks attentiveness.
In most cases, the terms often and frequently can be used interchangeably, but often connotes a great deal of repetition and, occasionally, regularity of occurrence: We frequently visit there, frequently suggesting particularly repetition at relatively frequent intervals: It occurs regularly. Adverbs of frequency are frequently used with the present simple tense because they are frequently used to describe routine or repeated activities. In order to place the adverb of frequency after the subject and before the verb, place it in the middle of the sentence. When the word usually is used as a frequency adverb, it seems to me to imply a higher frequency than frequently. However, usually does not necessarily imply "often," and it can mean in a way that is normal: About four times a year, I travel to England.
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If you want a characteristic RL time constant of 1.00 s, and you have a 500 Ω resistor, what value of selfinductance is needed?
The time constant of an RL circuit is given as,
(picture)
Here, is the inductance andis the resistance.
If your 500 resistor has a 1.00 s characteristic RL time constant, then the value of your self-inductance is 500H.
The time OF RL circuit: τ=1.0 s
The resistance OF RL circuit: R=500 Ω
The time constant of the RL circuit can BE :τ=L/R
the self-inductance of the conducting coil used in the circuit will be given by: L=τR
L=1.00s×(500 Ω)
L=500H
The parameter characterizing the response to a step input of a first-order, linear time-invariant system is known as the time constant in physics and engineering. It is typically denoted by the Greek letter. A first-order LTI system's primary characteristic unit is the time constant. An RC circuit's time constant, also known as tau or the time constant (in seconds), is equal to the product of the circuit's resistance (in ohms) and capacitance (in pF).
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36. which of the following is not an advantage that the hubble spacetelescope has over large telescopes on earth?a. the hubble is above the earth's atmosphere, while on the ground starimages twinkle and jiggleb. the hubble can observe at wavelengths (such as uv) which cannot be seenfrom the groundc. the hubble has a larger aperture than any visible-light telescope on earthd. the hubble has a better resolution than visible-light telescopes on earth (notcounting adaptive optics)e. you can't fool me, all of these are advantages the hubble has over earth-bound telescopes
The option that is not an advantage of the Hubble Space Telescope over the large telescopes on earth, is the Hubble has a larger aperture than any visible-light telescope on Earth. Correct answer: letter C.
Because Hubble cannot make real-time observations. Hubble is a space telescope that collects light traveling through space from distant objects. This light must be collected by the telescope and then sent back to Earth for processing, which takes time. This means that Hubble cannot make real-time observations as large telescopes on Earth do.
What is the Hubble Space Telescope?The Hubble Space Telescope (HST) is a large telescope in space that was launched in 1990. It orbits Earth at an altitude of about 340 miles and allows scientists to observe distant galaxies, stars, and other celestial objects in space. Hubble is the only telescope to have been placed outside of Earth's atmosphere, allowing it to have a much clearer view of the cosmos.
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an object of mass 855.9 g is moving across a horizontal surface at a speed of 26.8 m/s, what is the kinetic energy of this object
The Kinetic energy of the object is 307.370Joules.
Every object when starts moving in that case its potential energy due to its position starts converting to kinetic energy.
There are various theorems which involved kinetic energy. One of them is work-energy theorem.
Since, we have mass and velocity of object as 855.9g and 26.8m/sec respectively.
We know very well that Kinetic energy is given by =(1/2)mv²,where m is the mass of the body and v is the velocity of the body.
So, putting the values in above formula, we get
Kinetic energy=(1/2)×855.9×(26.8)²
=>Kinetic energy=614741.616/2
=>Kinetic energy=307370.808gm/sec² or 307.370Joules.
Hence, kinetic energy is 307.370Joules.
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you want to store 1,000 j of energy in an ideal spring when it is compressed by only 2.5 cm. what should be the force constant (spring constant) of this spring?
The given spring has a spring constant of 3.2 106 N/m.
How do you find the spring constant k?The term "spring constant" refers to the proportional constant k. It gauges the stiffness of the spring. A spring exerts a force F = -kx in the direction of its equilibrium position when it is stretched or compressed to a length that differs by an amount x from its equilibrium length.W = kx. W stands for the additional mass's weight. As a result, the slope of the plot of the straight line W vs x represents the spring constant, K. Weight (W) is defined as mass times the gravitational acceleration (g), where g is equal to approximately 980 cm/sec2.The stiffness constant, or "k," is also known as the spring constant. N/m is the unit for spring constant.Given data :
An equation may be used to represent the spring force:
F = -kx,
where x is a potential deformation of the spring and k is a spring constant. The spring will revert to its previous shape or location, according to the negative sign.
When a spring is squeezed, the energy stored in the spring is provided by:
E = (1/2)kx²
E = 1000J, where J is the energy that the spring stores when it is compressed.
x = 2.5 cm = 0.025 m is the compression distance of a spring.
1000 = (1/2)×k (0.025)²
k = 3.2 × 10⁶N/m
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What are the 7 types of waves?.
The seven types of waves are radio waves, microwaves, infrared, visible, ultraviolet rays, x-rays and gamma rays.
The electromagnetic spectrum is a broad spectrum consisting of various waves. It contains very long radio waves to very short gamma rays. However, the human eye can detect only a small portion of this spectrum called as visible light.
The other waves that are invisible to the eye have their applications in various fields.
For example, radio waves have the longest waves on the spectrum and are said to have lowest energy. An MRI machine uses these waves to see tissues and bones up close.
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Why does ATP serve as a common energy source for organisms?.
ATP serves as a common energy source for organisms because - its energy can be easily transferred to do cellular work.
ATP or Adenosine Triphosphate is a more immediate source of energy than glucose because ATP is produced in the cells and its conversion to energy is a single-step process.
Glucose needs to be broken down in order to be used as an energy source.
ATP is a high-energy molecule ATP has an unstable structure compared to other high-energy molecules.ATP has a higher potential to transfer phosphate groups.Therefore, ATP serves as a common energy source for organisms because - its energy can be easily transferred to do cellular work.
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