The uniform solid sphere rolls down an incident angel for solid sphere is θ = 9.6 degree .
What is incident angel?The angle of incidence in geometric optics is the angle formed between a ray incident on a surface and the normal, or line perpendicular to the surface at the point of incidence. Any wave, including optical, acoustic, microwave, X-ray, and others, can create a ray.
required acceleration = .12 g
The term for the acceleration of a rolling body on an inclined surface
= gsinθ / 1 + k² / R²
Here rolling body is sphere
k² = 2/5 R²
k² / R² = 2/5
acceleration = g sinθ / 1 + k² / R²
.10 g = g sinθ / 1 + k² / R²
.10 g =g sinθ / 1 + 2/5
.10 = sinθ / 1.4
sinθ = .168
θ = 9.6 degree .
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Write a general rule that explains how to predict how the gravitational forces between objects of different mass will change when the masses increase or decrease
As an object's mass increases, the gravitational force grows (also called the gravity force). The gravitational force rapidly decreases as the distance between masses increases.
How does gravitational force change as mass increases?Greater gravitational forces will be used to attract heavier objects because the gravitational force is directly proportional to the mass of both interacting objects. Therefore, the gravitational attraction between two objects grows as their respective masses do as well.
How does mass affect the gravitational force between objects?The masses of the two objects and their separation from one another will determine how much gravitational force there is between them. Each object's mass and gravitational force are inversely proportional. This implies that an object's gravitational force increases with mass.
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every day Liam rides his bicycle to the near park that is 1.75 kilometers away from his home. if it takes liam 10 minutes to reach the park what is liam's average cycling speed?
The speed is the distance covered by an object at a particular time. The average cycling speed of Liam is 2.91667 meters/sec.
What is speed?The speed is the distance covered by an object at a particular time. Therefore, it is the ratio of distance and time.
Speed = Distance Covered / Time taken
Given that Liam rides his bicycle to the near park that is 1.75 kilometers away from his home and it takes Liam 10 minutes to reach the park. Therefore, we can write,
Distance covered by Liam = 1.75 kilometers
= 1.75 × 1000 meter
= 1750 meters
Time taken by Liam = 10 minutes
= 10 × 60 seconds
= 600 seconds
Now, Liam's average cycling speed can be written as,
Liam's average cycling speed
= Distance covered by Liam/Time taken by Liam
= 1750 meters / 600 seconds
= 2.91667 meters/seconds
Hence, the average cycling speed of Liam is 2.91667 meters/sec.
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If the bias of the previous varactor has changed to 2v with reverse bias connection, what is the new resonance frequency in ghz?
Varactors provide a tunable capacitance with the bias voltage across the varactor, a reverse biased diode, changing the capacitance of the diode. The applied bias voltage also changes the series resistance of the diode
The choke inductors provide a DC short and an RF opens
The resonator network is designed to be resonant at a frequency above the operating frequency. At the oscillation frequency, the resonator network must present an inductance to resonate with the capacitance of the active device in an oscillator. In addition, for oscillator stability, the effective inductance must have a particular derivative of admittance with respect to frequency.
The combination of the resonator and the active device forms an oscillator. The intersection of the active device and resonator loci selects the oscillation frequency of the oscillator. The oscillator presents a capacitance to the resonator and so the resonator must present an inductance to the active device
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Use eq. 1 to derive an expression for the expected output waveform from an ideal differentiator circuit having input waveform vin=1sin[(2)1000t] v. let rf=1.5 k and c=10 nf.
For the expected output waveform from an ideal differentiator circuit having input waveform vin=1sin[(2)1000t] v, the expression can be stated as Vo(t) = -0.09424 cos(2π(1000)t)V.
WaveformA waveform is a typically graphic representation of a wave’s shape that describes its properties (such as frequency and amplitude).
What are the three sorts of waveforms?Sinusoidal, triangular, and square waveform outputs are all simultaneously available from separate output terminals.
What is the purpose of a waveform?A waveform is only a graphic that aids in our comprehension of sound waves. They track the movement of one air molecule over time.
We can change a waveform’s amplitude to make it louder or quieter, and we can change a waveform’s frequency to change the pitch.
Herein,
Rf = 1.5k
C = 10 nF
Vin = 1sin(2π(1000)t)V
Vo(t) = -Rfc dvin(t)/dt
Vo(t) = -1.5 x 10^3 x 10 x 10^-9 d/dt (1sin(2π(1000)t))
Vo(t) = -15 x 10^-6 x 2π x 1000 [cos(2π(1000)t]
Vo(t) = -94.24 x 10^-3 cos(2π(1000)t)V
Vo(t) = -94.24cos(2π(1000)t) mV
or Vo(t) = -0.09424 cos(2π(1000)t)V
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Which of the following defines the number of times your heart beats in one minute during rest?
Target Heart Rate
Resting Heart Rate
Maximum Heart Rate
Beat Pulse Measurement
Answer:
Pulse & Heart Rate. Your heart rate is the number of times each minute that your heart beats, which is normally between 60 and 100 times per minute for adults. Your pulse is a way you can feel each time your heart beats
Explanation:
Microwaves, such as those used for radar and to heat food in a microwave oven, have wavelengths greater than 3 mm. What is the corresponding frequency of radiation of a wavelength of 13. 4 mm?.
The corresponding frequency of a microwave radiation with a wavelength of 13.4mm is 2.34 x 10¹⁰hz.
What are microwaves?Microwaves are electromagnetic radiations that fall between infrared radiation and radio waves in the electromagnetic spectrum. The frequency of microwaves range between 300Mhz to 300Ghz, and the wavelength ranges between 1mm to 30cm. Microwaves are used in communication and cooking.
Just like all electromagnetic waves, the wavelength of microwave is inversely proportional to its frequency, meaning that the longer the wavelength, the smaller the frequency. The relationship between wavelength, frequency and velocity can be expressed in this formular:
v = f x λ
Where:
v represents the speed of light f is the frequency λ is wavelengthSince we are told to look for frequency in the question, we would make f the subject of the formular:
f = v/λ
The velocity of all electromagnetic waves is constant, 3 x 10⁸m/s. Since the unit of velocity is in meters per second, the unit of the wavelength will also have to be in meters, hence, we the wavelength divide by 1000, giving us 0.0134, putting these values into the equation:
f = 3 x 10⁸m/s/0.0134m
f = 2.34 x 10¹⁰hz
Therefore, the corresponding frequency of a radiation with a wavelength of 13.4mm is 2.34 x 10¹⁰hz.
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What is the wavelength of the line corresponding to n=n= 4 in the balmer series?
The wavelength of the line corresponding to n=n= 4 in the Balmer series is 486 nm .
What is meant by wavelength?A periodic wave's wavelength is its spatial period, or the length over which its shape repeats. A waveform signal that is carried in space or down a wire has a wavelength, which is the separation between two identical places (adjacent crests) in the consecutive cycles.
This length is typically defined in wireless systems in meters (m), centimeters (cm), or millimeters (mm) (mm). The distance between two successive crests or troughs of a wave is known as its wavelength. It is measured in the wave's direction.
Expression for the Balmer series to discover the wavelength of the spectral line is as follows:
1 / λ = R [tex](1/2^{2}-1/n^{2} )[/tex]
Where λ stands for the wavelength, R stands for the Rydberg constant, and n is the integral value (4 here → the Fourth level)
Substitute 1.097 x 10⁷ m⁻¹ for R and 4 for n in the above equation
1 / λ = (1.097 x 10⁷ m⁻¹) [tex](1/2^{2}-1/4^{2} )[/tex]
= 0.20568 x 10⁷ m⁻¹
λ = 4.86 x 10⁻⁷ m
since 1 m = 10⁹ nm
λ = 486 nm
Hence, The wavelength of the line corresponding to n=n= 4 in the Balmer series is 486 nm .
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Ow much heat (kj) is absorbed by 948.0 g of water in order for the temperature to increase from to:__________
The temperature to increase from to 29.75℃.
What is heat absorption?When heat is transferred from your body by moving air, convection takes place. The air will rise if it absorbs your heat and is colder than the environment. Cooler air flows in to take its place and absorb more of your warmth as the warmed air rising around you increases. You feel colder as this air flows more quickly.
When absorbed by a substance, heat results inter-particle bonds to weaken and break which result to a change of state (solid to liquid for example). Heat causing a phase change is NOT sufficient to cause an increase in temperature
amount of heat absorbed ,
q = m* c* ΔT
specific heat of water is = 4.186J/g ⁰C
ΔT = 7.5⁰C
mass of water = 948.0g
there for,
q = 948.0g * 7.5⁰C * 4.186J/g ⁰C
q = 29.762 KJ
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A first order reaction has a rate constant of 0.25622 at 43.9 oc. given that the arrhenius constant for the reaction is 7.35 x 1010 sec -1, what is the value of the activation energy (in kj/mol)?
value of the activation energy (in kj/mol) Ea = 67.8 kJ/mol
k = Ae-Ea/RT
ln k = -Ea/RT + ln A
k = 0.20287
R = 8.314 J/mol-K = 0.008314 kJ/mol-K
T = 45.5ºC + 273 = 318.5K
A = 2.7x1010
Ea = ?
ln (0.20287) = [-Ea / (0.008314)(318.5)] + ln 2.7x1010
-1.596 = (-Ea / 2.648) + 24.02
-25.616 = -Ea / 2.648
Ea = 67.8 kJ/mol
A chemical reaction that has a reaction rate that is linearly dependent on the concentration of just one ingredient is known as a first-order reaction. In other terms, a first-order reaction is a chemical reaction in which only one of the reactants' concentrations is changed and the rate of the reaction changes as a result
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What happens to the ratio of output to input amplitude as the frequency increases?
The peak (+ve half) and trough (-ve half) portions of the waveform signal flatten out or are "Clipped-off" when the input amplitude is too high, forcing the output waveform signal to exceed the power supply voltage rails.
Over the whole auditory range of frequencies from 20 Hz to 20 kHz, the majority of contemporary audio amplifiers exhibit the same flat frequency response as seen above. The Bandwidth (BW) of an audio amplifier, which is mostly influenced by the circuit's frequency response, is the range of frequencies it can handle. The power in the high frequency band, from 8 to 24 Hz, divided by the power in the low frequency band, from 3 to 5 Hz, is known as the frequency ratio.
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If it takes e = 41 mj of energy to separate q = 1.71 c of charge, what is the resultant voltage?
The resultant voltage is V=23.9mV.
Potential energy is a type of energy, and when differences are taken into account, the definition of potential is potential energy (or potential energy difference) per unit charge or V=E/Q. That matches your equation exactly. The amount of electrical charge transmitted by a potential difference of V volts. Quantity of electric charge (coulombs) x potential difference equals the energy transmitted in joules (volts) Q = electrical charge transported (C), V = p.d., E = energy transfer in joules (J), and V = E/Q. (V)
E=41mj
q=1.71c
The resultant voltage,
E = Q×V
[tex]V = (41\times10^{-3}) / 1.71[/tex]
V = 0.02397
V = 23.9mV
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An asteroid has a perihelion distance of 3.36 a.u. and an aphelion distance of 1.5 a.u. to the nearest hundredth of an a.u., what is its semi-major axis?
The semi - major axis is a = 2.43 A.U
The semi-major axis, a, is half of the longest diameter of an ellipse. Together with the semi-minor axis , b, and eccentricity, e, it forms a set of related values that completely describe the shape of an ellipse.
Now,
We have to find the semi major axis which we represents as "a".
Aphelion = a( 1+e ) = 1.5 AU.
Perihelion = a( 1−e )= 3.36 AU .
a = ( 1.5 + 3.36 )/2 AU = 2.43 AU .
e = 3.36 - 1.5 /2a
= 1.86 /2 ( 2.43 ) = 1.86 /4.86
=0.3827.
The semi - major axis is a = 2.43 A.U
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A 6 feet diameter bar experiences a torque of 200 ft-lb. what is the maximum shear stress in the bar?
By using the torque, the shear stress is 2.36 lb/ft².
We need to know about torque to solve this problem. Torque is the rotational equivalent of linear force. It can be determined as
τ = F x r
where τ is torque, F is perpendicular force and r is radius.
Shear stress can be calculated by torque
P = F / A
P = τ / (π.r³)
where P is shear stress, r is the radius.
From the question above, the parameter given are
τ = 200 ft.lb
d = 6 ft
Find the radius
r = 1/2 . d
r = 3 ft
Find the shear stress
P = τ / (π.r³)
P = 200 / (π.3³)
P = 2.36 lb/ft²
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A quasi-equilibrium process is a process during which a system never remains in equilibrium at all times.
true or false
A quasi-equilibrium process is a process during which a system never remains in equilibrium at all times is a - True statement
A quasi-equilibrium process is one in which a system is nearly in equilibrium at all times.
Numerous engineering procedures can roughly be described as quasi-equilibrium processes. When quasi-equilibrium processes are used instead of non-quasi-equilibrium processes, a device's work output is maximized and its work input is minimized.
An illustration of this is the quasi-static expansion of a mixture of hydrogen and oxygen gas, in which the system's volume changes so slowly that the pressure stays constant throughout the system at every instant of the process. A series of physical equilibrium states comprise this idealized process, which is characterized by infinite slowness.
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A wave is described by y = 0.019 2 sin(kx - t), where k = 2.16 rad/m, = 3.52 rad/s, x and y are in meters, and t is in seconds. determine the speed of the wave.
The velocity function is v = -0.0676cos(2.16 . x - 3.52 . t)
We need to know about vectors function to solve this problem. The velocity is depend on position vector and acceleration. It can be written as
v = dy / dt
where v is velocity, dy is displacement and dt is time interval.
From the question above, we know that
y = 0.0192sin(kx - ωt)
k = 2.16 /m
ω = 3.52 rad/s
Substitute k and ω to y
y = 0.0192sin(kx - ωt)
y = 0.0192sin(2.16 . x - 3.52 . t)
Hence, the velocity is
v = dy / dt
v = d(0.0192sin(2.16 . x - 3.52 . t)) / dt
v = 0.0192 . (-3.52) . cos(2.16 . x - 3.52 . t)
v = -0.0676cos(2.16 . x - 3.52 . t)
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How much energy is stored by the electric field between two square plates, 9.1 cm on a side, separated by a 2.5-mm air gap? the charges on the plates are equal and opposite and of magnitude 17 nc .
The stored energy is [tex]3.83x10^{-6}[/tex] J.
Explanation:
Given that,
One side of square plates = 8.5 cm
Distance = 2.5 mm
Charge = 14 nC
We need to calculate the energy stored
The energy is stored by the electric field between two square plates is defined as, A abrupt release of collected energy, known as "stored energy," has the potential to result in severe harm or even death. Gravitational potential energy, pressurised gases and liquids, stored mechanical energy, and stored electrical energy are only a few examples of the many different types of stored energy.
4 types of stored energies are:
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What is the average velocity
of a ball that takes 15.7
seconds to roll 18 meters? HELP PLEASEEE
The average velocity of the ball is 1.14 m/s.
Since there is no height given, we can assume that the ball was rolling on a non-inclined surface.
Distance covered by the ball = 18 meters
Time taken by the ball = 15.7 seconds
The velocity of the ball = Distance / Time taken
Velocity= 18/15.7
Velocity= 1.14 m/s
and since there is no initial velocity given, it is the average velocity of the ball.
The distance traveled divided by the time passed is the definition of an object's average speed. Average velocity can be calculated as the displacement divided by the time. Velocity is a vector quantity. The straight line average velocity formulae are invalid for broad scenarios involving non-constant acceleration, hence this definition must be used directly.
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When comparing the slopes of two lines on a position-time graph, a greater slope shows that the object represented by that line traveled
Answer:
V = Δ S / Δ t speed of object where change in position is displacement
Since V is represented by the slope, a greater slope indicates a "greater speed"
The diameter of a copper wire is 3mm. Express this diameter in meters.
What is the average acceleration of a sports car that increases its velocity from 2.0 m/s [w] to 4.5 m/s [w] in 1.9 s?
The average acceleration is a = 1.3158 m/s²
How do you write average acceleration?The change in velocity (v) over the change in time (t) is represented by the equation a = v/t. This enables you to calculate how quickly velocity changes in meters per second squared (m/s2). Because acceleration is a vector quantity, it includes both magnitude and direction.To calculate acceleration, divide velocity by time — or, in SI units, divide the meter per second [m/s] by the second [s]. Dividing distance by time twice is equivalent to dividing distance by time squared. As a result, the meter per second squared is the SI unit of acceleration.The average acceleration.
V₀ = 2.0 m/s,
V = 4.5 m/s,
t = 1.9 s,
a =?
a = V-V₀/t
a = 4.5 m/s - 2.0 m/s / 1.9 s
a = 2.5 m/s /1.9 s
a = 1.3158 m/s²
∴ The average acceleration is a = 1.3158 m/s²
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Do the following conversions 0.0045L to mL
Answer: 4.5 mL
Explanation:
1000 mL=1 L
0.0045L * 1000 mL/1 L=
0.0045 * 1000/1=
0.0045 * 1000=4.5 mL
what is the BEST example of an external communication?
Social media is the example of an external communication.
What are the external communication?The procedures in charge of communicating with individuals and groups outside of your organization are known as external communications. Customers, companies, suppliers, partners, investors, government organizations, and law enforcement are a few of these.
Email, brochures, newsletters, posters, advertisements, and other types of multi-media marketing are common examples of external communication that are used to entice clients, partners, and suppliers to engage in profitable business dealings.
What are goals of external communication?External communications' main objective is to convey to the public an important message about the organization's efforts and level of excellence. An aspect of communication that organizations cannot directly control is informal external communication.
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An ocean vessel using sonar sends a sound wave to the bottom of the sea and receives an echo after 0.3 sec. assume a speed of sound in water to be 1480 m/s. calculate the depth of the sea.
By using sonar echo, the depth of the sea is 222 m.
We need to know about the sonar echo to solve this problem. Sonar detection sends the sound wave through a medium to detect an object. The sound wave needs to travel from the transmitter to the object and then come back to the receiver. It can be determined by
v = 2.s / t
where v is the speed of sound, s is the distance and t is the time interval sound wave released until received.
From the question above, we know that
t = 0.3 s
v = 1480 m/s
By substituting the given parameters, we get
v = 2.s / t
1480 = 2 . s / 0.3
s = 740 . 0.3
s = 222 m
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Carl and Juan are playing catch. Carl throws a fastball to Juan and it hurts
Juan's hand. Why is this the case?
O Greater the acceleration, greater the force
Greater the mass, greater the acceleration
Greater the acceleration, the less the force
Greater the mass, the less the force
A person is on a paddleboard. The person exerts a force on the water with 1 poin
*
Answer:
Greater the acceleration, greater the force
Explanation:
because the speed of the ball will have more force
What is the result of evaluating the following postfix expression? 6 4 + * 3 10 +
The result of evaluating the following postfix expression 6 4 + * 3 10 +, the result of this postfix expression can be calculated as 13.
How to solve any postfix expressions?We want to find the value of the postfix expression:
6 4 + * 3 10 +
We will start from the left most operation symbol.
For each of the operation symbol, the two integers preceding the operation symbol are the symbols on which the specified operation needs to be performed. Then we have to replace the operational symbol with the two of the following integers as per the result of the operation.
Then we repeat for the left most operation symbol in the remaining string.
Thus, evaluating postfix,
6 4 + * 3 10 +
= 10 * 3 10 +
= 10 * 13
= 0 13
= 13
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When earth catches up to a slower-moving outer planet and passes it in its orbit, in the same way that a faster runner overtakes a slower runner in an outside lane, the outer planet.
When earth catches up to a slower-moving outer planet and passes it in its orbit, in the same way that a faster runner overtakes a slower runner in an outside lane, the outer planet exhibits retrograde motion.
What is Retrograde motion?
Retrograde motion is the apparent change in movement of any planet in the sky. It is not real such that the planet doesn't make any movement physically in its orbit.
The planet just appears to be in a movement because the relative positions of that planet and our planet, Earth and how these two planets move around the Sun.
Therefore, Retrograde motion is actually an illusion which is related to the movement of this Earth-based observer.
One familiar example occurs when an individual passes a car on a freeway, the car that passed appears to have moved backwards, relative to that individual.
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What does the slope of a position-time graph measure?
The number of valence electrons in neutral atoms equals the atom's main group number. A periodic table column can be used to determine an element's main group number.
What is the meaning of a position time graph?The position-time graph depicts the movement of an item across time. Time in seconds is traditionally represented on the x-axis, while object location in metres is plotted along the y-axis. The slope of the position-time graph offers vital information about the object's velocity.
Gravity causes objects in free fall to accelerate. As a result, the free fall motion position-time graph must be curved. This means that objects in free fall begin with a moderate velocity and gradually accelerate, as illustrated by the graph's steep downward curve.
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train moves by initial speed 55 km\h and acceleration 50 km\h2 calculate the final speed after 42 minutes
The final speed of the train after 42 minutes is 90 km/h
We are provided with acceleration, initial speed and time after which final speed is to be found
Let us consider the motion of the train to be in one dimension
Then, formulas of one dimension can be applied to find the final speed.
Let the initial speed of the train be 'u'
Let the final speed of the train be 'v'
Let the acceleration due to gravity be 'a'
Let the time take to reach the speed 'v' be t
Now, as per the data given,
u=55km/h
acceleration due to gravity= 50km/h^2
Time taken, t= 42 minutes
Now as we can see that all units are in km/h, time must also be in hour
As we know that 1 hour= 60 minutes
therefore, 42 minutes= 42/60=7/10= 0.7 hour
Now using the formula v = u +at
v = u +at
v = 55 + 50 x 0.7
v = 55 +35 = 90 km/hr
Hence, the final speed of the train after 42 minutes is 90 km/h
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Silicon is a semiconductor and has properties of both metals and nonmetals.
What type of element is Silicon?
Answer:
Metalloid
Explanation:
Hope this helps!
How much does a typical water bed weigh? note that 1 cubic foot of water weighs 64.2 pounds and a typical water bed holds 28 cubic feet of water.
A typical water bed with a volume of 28 cubic feet has a weigh of: 1792 pounds
To solve this problem the we have to do the conversion of units with the given information.
Information about the problem:
factor of conversion = 1ft³/64 poundsv(water bed)= 28 ft³m(water bed)= expressed in pounds?By using the conversion factor we have:
m(water bed)= 28 ft³ * 64 pounds / 1ft³
m(water bed)= 1792 pounds
What is unit conversion?It is the transformation of a value expressed in one unit of measurement into an equivalent value expressed in another unit of measurement of the same nature.
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