There are no static methods in this class is correct statement.
We are physically surrounded with friction. An object moving along a path is resisted by a force known as static friction. Lastly, use an easy example to comprehend it. Think about the activity we perform frequently called walking. We are constantly in contact with the floor while we work. Motion presses against the ground as we move it backward, and we then advance our feet.
One key concept to be aware of in order to minimize friction is the fact that it operates in the opposite direction from relative motion. This phenomena may be useful for reducing the speed of the action until it eventually comes to a stop.
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What are the two independent components of projectile motion?.
The two independent components of Projectile motion in 2D plane are horizontal and vertical.
Projectile motion is nothing but a form of motion experienced by an object or particle that is projected in a gravitational field, such as from Earth's surface, and moves along a curved path under the action of gravity only. It means the object is thrown from earth and due to the gravity object is again coming back to earth.
When object is moving up, the velocity it has can be derived into its components horizontally and vertically because velocity is a vector quantity.
V = Vx + Vy
where V is the resultant vector and Vx and Vy are the horizontal and vertical components of the velocity.
Hence the two independent components of Projectile motion in 2D plane are horizontal and vertical.
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Constants Periodic Table Learning Goal: First, let us consider an object launched vertically upward with an initial speed v. Neglect air resistance. To apply the law of conservation of energy to an object launched upward in Earth's gravitational field. In the absence of nonconservative forces such as friction and air resistance, the total mechanical energy in a closed system is conserved. This is one particular case of the law of conservation of energy. Part A As the projectile goes upward, what energy changes take place? Both kinetic and potential energy decrease. In this problem, you will apply the law of conservation of energy to different objects launched from Earth. The energy transformations that take place involve the object's kinetic energy K = (1/2)mv2 and its gravitational potential energy U = mgh. The law of conservation of energy for such cases implies that the sum of the object's kinetic energy and potential energy does not change with time. This idea can be expressed by the equation Both kinetic and potential energy increase. Kinetic energy decreases; potential energy increases. O Kinetic energy increases; potential energy decreases. K+Ui = K+Uf Submit Request Answer where "i" denotes the "initial" moment and "f" denotes the "final" moment. Since any two moments will work, the choice of the moments to consider is, technically, up to you. That choice, though, is usually suggested by the question posed in the problem. Part B Complete previous part(s) Part C Complete previous part(s)
A As the projectile goes upward, what energy changes take place the energy is gravitational energy.
At the beginning, the projectile can have kinetic electricity because of the preliminary velocity, and we know, via way of means of conservation of electricity, that if there may be no friction withinside the air, the kinetic electricity of the item could be converted into gravitational capability electricity because the peak increases.
In Part A As the projectile goes upward, what energy changes take place then the energy change is gravitational energy change.
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a horizontal force of 330 n is exerted on a 2.5-kg ball as it rotates (at arm's length) uniformly in a horizontal circle of radius 0.90 m. Calculate the speed of the ball!
According to given question by applying the centripetal force, the speed of the ball is 12.18 m/s.
What does force, in brief, mean?The definition of force in physics is: This push or draw on a massed object changes its velocity. An unseen factor is an agency that has the power to alter the resting or movement condition of a body. It has both a trajectory and a size.
What are examples of force?There are several instances of energies in daily life, including: heft and drive (i.e. the weight of something) is force a swing applies to a ball. the pressure that a hair applies to hairs when stroking it. the pressure your foot applies to the pedal whenever you're riding your bike.
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what is currently the most used trajectory strategy to maximize efficiency for modern space probe interplanetary travel?
The typical goal is to maximize the portion of the spacecraft not used for propellant or, alternatively, to minimize the amount of propellant needed.
What is interplanetary travel?
Crewed or uncrewed interplanetary spaceflight, often known as "interplanetary travel," is the movement between stars and planets, typically within a single planetary system. In actuality, these kinds of spaceflights are limited to interplanetary travel only.
What is the trajectory?
A moving object that follows a path through space as a function of time is said to be following a trajectory. A "trajectory" is a description of an object's position over a specific period of time in mathematics.
The typical goal is to maximize the portion of the spacecraft not used for propellant or, alternatively, to minimize the amount of propellant needed. Of course, as is frequently the case in continuous dynamical system optimization, it is typically necessary to provide some reasonable upper bound for the final time; otherwise, the optimizer will substitute time for fuel.
Therefore, The typical goal is to maximize the portion of the spacecraft not used for propellant or, alternatively, to minimize the amount of propellant needed.
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A person pulls a block across a rough horizontal surface at a constant speed by applying a force F The arrows in the diagram correctly indicate the directions, but not necessarily the magnitudes of the various forces on the block: Which of the following relations among the force magnitudes Wk, N and F must be true? (a) F = k and N = W. (b) F = k and N > W, (c) F < k and N = W. (d) F > k and N < W. (e) None of the above:
The relations among the force magnitudes Work, k, N and F is none of the above.
What is force?
Force is the push or pull on any given object that can change the velocity of the object. It has both magnitude and direction which has the formula F = ma, where F is force, m is mass and a is acceleration.
Let the force be at angle θ to be horizontal. The block is in equilibrium, so
∑Fx = 0
F cosθ - k = 0
F = k secθ (> k)
∑Fy = 0
F sinθ + N -W = 0
N = W - F sinθ (<W)
Therefore, the relation of force magnitudes can be written as F>k and N<W, the correct answer is e).
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Compare that speed with the Sun's orbital speed around our galaxy. Based on your comparison, do you think the galaxy's gravity would be strong enough to retain the supernova debris if there were no interstellar medium to slow it down?
Supernova debris moves about 100 times faster than the Sun. The gravity of galaxy alone would not retain the supernova debris.
Supernova debris moves about 100 times faster than the Sun. The gravity of galaxy alone would not retain the supernova debris.
A planet's orbital velocity modifications, depending on how far it's far from the solar. The closer a planet is to the solar, the more potent the sun's gravitational pull on it, and the quicker the planet actions. The farther it's far from the sun, the weaker the Solar's gravitational pull, and the slower it moves in its orbit.
Hubble's law, which says certainly that a galaxy's speed is directly proportional to its distance, additionally tells us some thing important approximately the country of the universe. If the universe is static and unchanging, there should be no correlation among distance and pace.
They must come to be greater turbulent. It produces so much visible light that it is opaque and blocks our view of anything beyond it. It reflects most light from far distances of the galaxy away from our line of sight. A star starts offevolved its time on the principle sequence with 10 solar loads.
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We usually think about friction as a force that opposes motion, but under some circumstances it can be the force responsible for making an object accelerate. For example, consider hauling a log in the back of a flatbed truck. If there were no friction between the log and the truck, then when the truck accelerates the log would have no force acting on it to make it accelerate also, so it would just stay at rest and the truck would 'drive out from under it'! However, in reality there is friction between the log and the truck and so, providing the log does not slip, we rely on the static frictional force to make the log accelerate at the same rate as the truck.
The frictional pressure opposes the movement of an item relative to its floor in contact unto which the force act upon.
However, the course of frictional pressure can be similar to the course of movement of the item. For example, at some point of on foot we observe a pressure withinside the backward course with our foot. When we carried out brake to the auto friction acts in contrary course of movement like if the auto circulate in east course the friction will act in west course.
We can say that friction act in contrary course hence,it continually opposes relative movement. Friction continually acts in contrary course to motion i.e it opposes the movement of an item. Air resistance is a frictional pressure which opposes movement thru air.
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TRUE/FALSE. a recently discovered extrasolar planet appears to be rockier and denser than earth. it is 16 times as massive as earth, but its diameter is only twice that of earth.
The acceleration of free fall on the planet is given by 39.2 m/s².
What is the acceleration of free fall?The acceleration of free fall is the acceleration at which a body falling freely experiences the gravitational pull of a single planet. It is also known as a gravitational acceleration.
Value of the acceleration of free fall on earth is 9.8 m/s².
The formula of acceleration of free fall on any planet is given by:
g₁ = GM/R²
As the extrasolar planet appears to be rockier and denser than earth. it is 16 times as massive as earth, but its diameter is only twice that of earth, the acceleration of free fall on any planet is given by:
g₁ = GM/R² = 16GMe/(2Re)² = 4 GMe/Re = 4g = 4× 9.8 m/s² = 39.2 m/s² .
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Two blocks are attached to opposite ends of a massless rope that goes over a massless, frictionless, stationary pulley. One of the blocks, with a mass of 5.0 kg accelerates downward at 34g.The mass of the other block moving upwards is 4.71 kg
The acceleration of the block moving upward is 5.15g.
The two blocks of mass 5 kg and 4.71 kg are connected by a massless rope, that goes over a frictionless, stationary pulley.
The acceleration of the 5 kg block is 34g in downwards direction.
So, if the tension is the rope is T, then we can write,
For the 5 kg block,
5g - T = 34g
For the 4.71 kg block,
T - 4.71g = 4.71a
Where, a is the upward acceleration of the block of mass 4.71 kg,
Solving the above 2 equations,
We get,
5g - 4.71(a-g) = 34g
Solving further,
9.7g - 4.71a = 34g
4.71a = -24.3g
a = -5.15g
So, the upward acceleration of the 4.71kg block is -5.15g.
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which of the following reactions would be inhibited in the presence of large amounts of an egg white protein that binds and sequesters biotin?
The correct answer is pyruvate to oxaloacetate.
Enzymatic activation of pyruvate kinase increases cytosolic oxaloacetate to inhibit the Warburg effect is a research paper written by Elizabeth K Wiese, Sadae Hitosugi, Sharon T Loa, Annapoorna Sreedhar, Lindsey G Andres-Beck, Kiran Kurmi, Yuan-Ping Pang, Larry M Karnitz, Wilson I Gonsalves and Taro Hitosugi.
Avidin is a glycoprotein, four identical subunits are there in avidin. It is found in white part of the egg of reptiles, amphibians, and birds.
Avidin binds in specific manner with biotin.
Avidin is resistant to some of the enzymes like pancreatic enzymes.
Therefore, the conversions of Pyruvate into glucose and and the conversion of Pyruvate into oxaloacetate would be blocked if the avidin is added to a cell homogenate.
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find the frequency of revolution of an electron with an energy of 100 ev in a uniform magnetic field of magnitude 35.0 mt.
The frequency of revolution of an electron with an energy of 100 ev in a uniform magnetic field of magnitude 35.0 mt is 9.78 x 10^5 Hz
What is cyclotron frequency?
A charged particle travelling perpendicular to the direction of an even magnetic field has a frequency that is known as the cyclotron frequency or gyrofrequency (constant magnitude and direction). The cyclotron frequency is determined by the centripetal force and magnetic Lorentz force being equal because that motion is always circular.
Kinetic Energy of the electron = 100 ev
= 100×(1.60×10^−19 J)
= 1.60×10 ^−17 J
The expression of kinetic energy of the electron in terms of the velocity-
E = mv^2/2
v = (2E/m)^1/2
Putting the values in the above expression we obtain the value of v,
v = ( 2 x 1.60 x 10 ^−17/ 9.1 x 10^-31)^1/2
= 5.92 x 10^6 m/s
The radius of the circular path the electron moves inside a magnetic field is given as-
r = mv / eB
Putting the values we find,
r = (9.11×10^−31 kg)(5.92×10^6m/s)/ (1.6 x 10^-19 C)(35 x 10^-6 T)
= 0.963 m
The orbital frequency is same as the velocity of the electron when it moves over the circular path, which is given as-
f = v / 2πr
= (5.92×10^6 m/s)/2π(0.963 m)
= 9.78 x 10^5 Hz
Hence, the required frequency is 9.78 x 10^5 Hz
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assuming the crate weighs 100 lbs, calculate the tension in each example and explain if a directional advantage exists or not.
Tensions in each examples are, T=222.264 N, T=0 T=148.176 N, T=111.132 N.
Given,
m=100lbs,=45.46 kg
(a) 2T= mg
T=mg/2
=(45.46×9.8)/2
T=222.264 N
(b) For pulley
2T= mg
T=mg/2
T=222.264 N
For pulley 2:
2T=[tex]W_p_u_l_l_e_y[/tex]=0
T=0
(c) Here 3T=mg
T=mg/3
T=148.176 N
(d) Pulley 1:
3T=mg
T=148.176 N
Pulley 2:
T-(-T)=0
2T=0
T=0
(e) Pulley:
4T=mg
T=mg/4
T=111.132 N
From the above cases we can say that the directional advantages exist as the tension get divided to those string which are connected to that weight only.
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What are the two missing words in this sentence? A ______ _______ camera detects infrared radiation and uses this information to create a picture
A thermal infrared sensor camera detects infrared radiation and uses this information to create a picture.
How does a thermal infrared sensor camera work?In thermal or infrared detection systems, sensors are used to detect radiation in the infrared region of the electromagnetic spectrum. The thermal energy or heat produced by the scene being watched is detected by an infrared camera, which then transforms it into an electrical signal. After that, this signal is processed to create an image. An infrared camera's ability to detect heat can be quantified very precisely. Infrared cameras can be used to assess thermal performance and gauge the intensity of heat-related issues. In general, bodies and objects produce more radiation when they are heated up. Walls and other solid things cannot be seen through infrared cameras. They are limited to measuring heat.
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The angular speed of a motor is 262 rad/s. The back emf generated by the motor is 89.4 V. Assuming all other factors remain the same, determine the back emf if the angular speed of the motor is reduced to 131 rad/s.
1) 32.3 V
2) 44.7 V
3) 52.5 V
4) 89.4 V
5) 152 V
The back EMF of the motor is 44.7 m.
We know that EMF is directly proportional to angular velocity, thus if angular velocity becomes half then the EMF also becomes half.
Number of field poles = p
Flux per pole = Ф
Number of armature conductor = Z
Number of parallel paths = A
Rotational Speed in rpm = n
Now,
Average EMF generated per conductor = dФ/dt
Flux cut by one conductor in one revolution = dФ = pФ Weber
Number of revolutions per second = N/60
Time required for one revolution = t
= t = dФ/dt = ( pФN ) /60 sec
EMF generated per conductor = dФ/dt = ( pФN ) /60 Volts
The EMF generated in one conductor of the generator. The conductors are connected in series per parallel path, and the emf across the generator terminals is equal to the generated emf across any parallel path.
Thus,
= E = ( pФNZ ) /60 Ampere
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A sample of a gas (5. 0 mol) at 1. 0 atm is expanded at constant temperature from 10 l to 15 l. The final pressure is __________ atm.
The final pressure of a sample of a gas (5.0 mol) at 1.0 atm is expanded at constant temperature from 10 l to 15 l is 0.67 atm
Boyle's law states that at constant temperature of a given mass of confined gas, the product of its pressure and volume is also constant. Let P1 and V1 be the initial pressure and volume of the gas and P2 and V2 be the final pressure and volume of the gas.
P1 = 1 atm
V1 = 10 l
V2 = 15 l
According to Boyle's law,
P1 V1 = P2 V2
1 * 10 = P2 * 15
P2 = 10 / 15
P2 = 0.67 atm
Therefore, the final pressure is 0.67 atm
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Two speakers are placed side by side and driven by the same frequency of 0.50 kHz. If the distance from a person to one speaker is 5.0 m and the person detects little or no sound, which of the following is a possible the distance from the person to the other speaker? The sound speed in the room is 340 m/s
The possible distance from the person to the other speaker is c) 8.1m
To determine the possible distance we first convert the frequency from kHz to Hz as follows;
As 1 kHz = 1000 Hz
Therefore; 0.50 kHz = 0.50 × 1000 = 500 Hz
Now we determine the wavelength as follows;
wavelength = v ÷ f
wavelength = 340 ÷ 500
wavelength = 0.68 meters
Half wavelength = 0.5 × wavelength = 0.5 × 0.68 = 0.34 meters
For the sound interference to be destructive, the second source must be an odd multiple of 1/2 wavelength away from the first, therefore we calculate the possible distance from the person to the other speaker as follows;
distance between the person and speaker + odd multiple of wavelength = possible distance from other speaker
5 m + 0.34 m = 5.34 m
5 m + 3 × 0.34 m = 6.02 m
5 m + 5 × 0.34 m = 6.7 m
5 m + 7 × 0.34 m = 7.38 m
5 m + 9 × 0.34 m = 8.06 m
5 m + 11 × 0.34 m = 8.74 m
The value closest to any options provided above is 8.06 m therefore the correct option is 8.1 m.
Although a part of your question is missing, you might be referring to this question:
Two speakers are placed side by side and driven by the same frequency of 0.50 kHz. If the distance from a person to one speaker is 5.0 m and the person detects little or no sound, which of the following is a possible distance from the person to the other speaker? The sound speed in the room is 340 m/s
a) 8.4 m
b) 9.1 m
c) 8.1 m
d) 7.7 m
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a swimmer in an inner tube would like to ride the longshore current 0.18 km along the beach to the concession stand. the current is moving at 7.7 m/min. how long will it take the swimmer to reach the concession stand?
The distance to the concession booth is 1.386 kilometers, or kilometers per hour. A swim meet's length is influenced by a number of variables.
Why do swim meets last so long?Swim meets can last all day, but not always. A swim meet's length is influenced by a number of variables. such includes the number of participants, the number of events, and the age of the swimmers. The length of the meet might increase with the number of participants and events in a day.Use the distance formula, d = st, or distance equals speed times time, to find the distance. Given that they both reflect a certain amount of distance per unit of time, such as miles per hour or kilometers per hour, rate and speed are comparable.Explanation:
d = 0.18 * 7.7 = 1.386km/hr.
The distance to the concession booth is 1.386 kilometers, or kilometers per hour.
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tv broadcast antennas are the tallest artificial structures on earth. in 1987, a 73.5 kg physicist placed himself and 400 kg of equipment at the top of one 610-m high antenna to perform gravity experiments. randomized variables m
The answer to the given question is 1.90084 mm and the antenna was compressed to 19 cm respectively.
calculations;
assuming;
m = 400 kg be the total mass compressing the antenna,
h = 610 m be the height of the antenna,
g = 9.81 m/s² be gravitational acceleration,
E = 200 GPa = 2×108 N/m² be Young's modulus of steel.
The mass m applies vertical force F = mg
The cross-section of the antenna is S = πr²
Let Δh be the compression of the tower to be calculated.
By the definition of Young's modulus
Δh/h = F/(S×E)
Therefore
Δh = (h×F)/(S×E) = (h×m×g)/(πr²×E)
Substituting actual numbers
Δh = (610×414×9.81)/(π×0.15²×2×108) = 0.190084 mm
The antenna was compressed about 19 cm.
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A baseball is thrown vertically upward and feels no air resistance. As it is rising.
A baseball is thrown vertically upward and feels no air resistance. As it is rising its momentum is not conserved, but its mechanical energy is conserved.
What is Momentum?Momentum may be defined as a unique property of a moving body that the body has by virtue of its mass and motion and that is equal to the product of the body's mass and velocity.
According to the context of this question, as an object typically moves along the vertical direction, the gravitational potential energy, and the kinetic energy change. So, due to this, its momentum is not conserved, but its mechanical energy is conserved.
Therefore, a baseball is thrown vertically upward and feels no air resistance. As it is rising its momentum is not conserved, but its mechanical energy is conserved.
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a student weighed a chunk of solid co2 as 1.82 gram. what is the gas-to-solid volume ratio if the sublimated chunk produced gaseous carbon dioxide with volume 0.85 liter at atmospheric pressure. the additional necessary datum is given in the text
A student weighed a chunk of solid carbon dioxide as 1.82 gram.[tex]\frac{0.85 L}{0.0011667 L}[/tex] (728.55 ) is the gas-to-solid volume ratio if the sublimated chunk produced gaseous carbon dioxide with volume 0.85 liter at atmospheric pressure.
What is atmospheric pressure?The air around you has weight, and it presses against everything it touches. That pressure is called atmospheric pressure, or air pressure. It is the force exerted on a surface by the air above it as gravity pulls it to Earth. Atmospheric pressure is commonly measured with a barometer.
How to calculate?density of [tex]CO_{2}[/tex] = 1.56g/[tex]cm^{3}[/tex]
density =[tex]\frac{mass}{volume}[/tex]
volume of solid [tex]CO_{2}[/tex]
[tex]\frac{1.56g}{1cm^{3} }[/tex]=[tex]\frac{1.82 g}{?}[/tex]
? = [tex]\frac{1.167 }{cm^{3} }[/tex]
volume of [tex]CO_{2}[/tex] from [tex]cm^{3}[/tex] to L
1 [tex]cm^{3}[/tex]= 1 mL
1.167[tex]cm^{3}[/tex] × [tex]\frac{1 mL }{ 1cm^{3} }[/tex]× [tex]\frac{1L}{1000mL}[/tex]= 0.0011667 L
Ratio: [tex]\frac{V gas}{V solid}[/tex]
([tex]\frac{0.85 L}{0.0011667 L}[/tex]) = 728.55
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on a rainy day the coefficient of friction between a car's tires and a certain level road surface is reduced to half its usual value. the maximum safe speed for rounding the curve is
The Maximum safest speed to travel at when navigating a curve is 71% of the normal speed.
What impact does rain have on friction coefficient?In comparison to friction on a dry road, the friction coefficient of tyres sliding at 60 km/h on roads will rise during times of heavy rain and reduce on a wet road after a period of rainfall.
How does friction change on a wet surface?Water can change the amount of friction between two surfaces. Rubber tyres and paved roads have less friction when there is water present. Drivers must therefore take extra precautions to avoid sliding on slick roads. Water can make contact between your fingers and a plastic sheet more abrasive.
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a parallel-plate air capacitor is to store charge of magnitude 290 pc on each plate when the potential difference between the plates is 41.0 v . A.If the area of each plate is 6.80cm2, what is the separation between the plates? B.If the separation between the two plates is double the value calculated in part (a), what potential difference is required for the capacitor to store charge of magnitude 260pC on each plate?
The separation between two plates of parallel capacitor is 8.51 mm and when the separation is doubled the capacitance is reduced to halve.
Magnitude of Charge (Q) = 290 pc
Potential difference between plates (V) = 41.0 V
Let capacitance be = C
Using the relationship between charge and potential difference,
= Q = C × V
= C = Q / V
= C = 290 × 10⁻¹² / 41
= C = 7.07 × 10⁻¹² F
Now, we know that C = (ε × A) / d
Here, Area (A) = 6.80 cm² and
Distance = d
Thus, distance =
= d = (ε × A) / C
= d = (8.85 × 10⁻¹² × 6.80 × 10⁻⁴) / (7.07 × 10⁻¹²)
= d = 8.51 × 10⁻⁴ m
= d = 8.51 mm
Using Q = C × V,
= V = Q/C
If the separation between the two plates is doubled, then the capacitance is halve of the original value.
Thus, new V =
= 41 × 2
= 82 V
Hence, the new capacitance is 82 V when the distance of plates is doubles and the original separation between plates is 8.51 mm.
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an ethernet cable is 3.90 m long and has a mass of 0.190 kg. a transverse pulse is produced by plucking one end of the taut cable. the pulse makes four trips down and back along the cable in 0.835 s. what is the tension in the cable?
One end of the taut cable is pulled, causing a transverse pulse to be created. In 0.835 seconds, the pulse travels four times down the cable and four times back then the tension in the ethernet cable is determined as 67 N.
It is given to us that -
Ethernet cable is 3.90 m long => l = 3.90 m
and has a mass of 0.190 kg => m = 0.190 kg
It is also given that the transverse pulse makes four trips down and back along the cable in 0.835 s.
=> time taken, t = 0.835 s
We have to find out the tension in the cable.
We know that
Speed = Distance/Time ----- (1)
Since the transverse pulse applied on the ethernet cable makes four trips down and back along the cable, the total distance travelled by the pulse = 4 * (2l)
Now, using equation (1) we can find out the speed of the pulse by -
[tex]v = \frac{4*2*3.90}{0.835} \\= > v = 37.36[/tex] m/s ---- (2)
We also know that the mass density of the pulse can be determined by the formula -
μ = [tex]\frac{m}{l}[/tex] ------ (3)
where,
m = mass of the cable
l = length of the cable
Substituting the given values of mass and length of the cable in equation (3), we can find out the mass density of the pulse as -
μ = [tex]\frac{m}{l} = \frac{0.190}{3.90} = 0.048[/tex] kg/m ------ (4)
We also know that the tension in the cable can be represented by the formula -
T = μ[tex]v^{2}[/tex] ----- (5)
Substituting the values of v and μ from equations (2) and (4) respectively, we can find out the tension in the cable as -
T = μ[tex]v^{2}[/tex]
=> T = 0.048 * [tex](37.36)^{2}[/tex]
=> T = 67 N
Thus, the tension in the ethernet cable is determined as 67 N.
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In the experiment of the Charles' Law (V and T) you preformed, which variables are kept constant? Choose all the apply.
, , ,
Group of answer choices
A, n
B, the substance
C, P
D, V
E, T
In Charle's law, volume occupied by a fixed amount of gas is directly proportional to its absolute temperature, if the pressure remains constant.Hence, correct options are A , B and C.
Gases have a tendency to expand when heated, according to the experimental gas law known as Charle's law. The Kelvin temperature and the volume will be directly proportional when the pressure on a sample of a dry gas is held constant, according to a modern interpretation of Charles's law. According to Harles' Law, a gas's volume at a constant pressure is directly proportional to its Kevin temperature for a given mass. V1/T1=V2/T2 is how the relationship between temperature and volume is expressed mathematically. The balloon will revert to its original shape once you are back in a warm environment, though. This is due to Charles' Law, which states that a gas, in this case, helium, occupies more space when it is warm.
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imagine that a car drives from the bottom to the top of a hill. if the initial and final values of each property below remain constant, which of the following represent state functions in this scenario? that is, which properties do not depend on the path taken to reach that specific value. select all that apply.
State function is the property do not depend on the path taken to reach that specific value.
As, we know the property or a feature which does not rely upon the course is known as a state characteristic. Work-achieved in adiabatic processes is equal to the bad of trade in inner power from the primary regulation of thermodynamics. So, it is a state function.
Path functions are houses or portions whose values rely on the transition of a machine from the preliminary kingdom to the final state. the two most common path functions are warmth and paintings.
From all of the above given thermodynamic quantities, work is the best property which depends at the course accompanied by using the system i.e. on the preliminary and the final states of the system. on the opposite, the rest all others i.e. internal energy, enthalpy and entropy are path independent.
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this bar is 0.12 meters long and moving 29.6 m/s through a magnetic field of 58 mt. what is the induced electromotive force in the bar?
The induced electromotive force in the bar is 0.206 volt.
What is induced electromotive force?It is the creation of a potential difference in a coil as a result of variations in the magnetic flux flowing through it. To put it another way, it is said that electromotive force, or EMF, is induced when the flux connecting with a conductor or coil changes.
Given parameters:
Length of the bar: l = 0.12 meter
Speed of the bar: v = 29.6 m/s.
Magnetic field: B = 58 mT = 58 × 10⁻³ T.
Hence, the induced electromotive force in the bar: ε = lvB
= 0.12 × 29.6 × 58 × 10⁻³ Volt
=0.206 volt.
Hence, the induced electromotive force in the bar be 0.206 volt.
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suppose we want a satellite to revolve around the earth 7 times a day. what should the radius of its orbit be?
The radius of its orbit is 102.22 km
What is gravitational constant ?The proportionality constant utilized in Newton's Law of Gravitation is the gravitational constant. The universal gravitational constant, abbreviated G and measured in Nm2/kg2, is the gravitational force that attracts any two unit masses separated by a unit distance.
Earth's acceleration caused by gravity, or the magnitude of g, is 9.8 m/s2. According to this, an item falling freely on Earth would accelerate by 9.8 meters per second. The gravity of the Earth is to blame for this acceleration.
For this question, force caused by the satellite from the planet must be round about equal to the Centrifugal force :
[tex]F_{g} = F_{c[/tex]
[tex]\frac{GMm}{r^2}[/tex] = [tex]mw^2r[/tex]
where ;
G = gravitational constant and this value is constant = 6.67 × [tex]10^-^1^1[/tex]
m = mass of the earth and
r = distance
Using the concept of period through the angular velocity, we have
[tex]\frac{GM}{w^2}[/tex] = [tex]r^3[/tex]
Substitute the value and we will get
[tex]r^3[/tex] = 1068193.154
r = 102.22 km
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density and refractive index are class characteristics, and a match does not meet the criteria for individualizing a glass fragment to a common source.
Density and refractive index are class characteristics and match does not meet the criteria for individualizing glass fragment to a common source is true.
How to individualize glass fragments?The only way to individualize glass fragments at a crime scene to a single source is to assemble the fragments and physically fit them together just like a jigsaw puzzle.
Glass is physical and class evidence. Glass can be considered as an individual evidence if the pieces of broken glass can be reassembled & can help in identifying location, sequence of events & object identity
Forensic glass samples can be analyzed by comparing refractive index of the sample to the possible source.
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what is the term for periods of accelerated physical development with associated changes in height and weight?
The term is growth.
This term is used to define the physical development of height and weight in an individual.
The growth depends on an individual.
During the growth the hands and feet are likely to grow. This develops the height of any individual and the weight is also defined as the individual grows.
It is the continuously changes of the characteristics of the body, most noticeable in height and weight.
The ages 13-15 and 17-18 the two major brain growth spurts occur. In times of growth spurts the changes is visible during the first year of puberty.
Therefore, the term for periods of accelerated physical development with associated changes in height and weight is growth.
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english homework 7 grade
can I get help first, second and third person
Explanation:
First person:
First person is like you telling a story. It uses words like I or we. For example "I walked to the library after school," would be an example of first person. You are talking about yourself and what you did.
Second person:
Second person is referring to someone else. It uses words like you. This is like in a choose your own adventure book, with a sentence like "You advanced to the next level," or "You opened the door cautiously." You are talking about someone else, usually the person reading what you are righting.
Third person:
Third person is like you referring to someone in general. Common words for third person are she, he, they, them, or it. It is not always you talking about yourself or someone else. Some common examples are "The girl in the red coat then ate the cookie," or "They were in trouble!"
Hope this helps!
