The correct option is A.
The statement that will correct the error in Edwin's notes is as follows:
An electrically charged object needs to touch an uncharged object before they attract or repel.
How do electrically charged objects produce attraction?
The electrically charged objects produce attraction of oppositely charged objects. For example, if a positively charged object and a negatively charged object bring close to each other, they interact with one another. Their forces act in the same direction. i.e. from the positive to the negative charge.
There is an interaction between two oppositely charged objects required in order to furnish attraction, while there is an interaction between two identical charged objects required in order to furnish repulsion.
Therefore, whether it is attraction or repulsion, it must be required that an electrically charged object needs to touch an un-charged object.
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[NOTE: THIS IS AN INCOMPLETE QUESTION. THE COMPLETE QUESTION IS:
What happens when an uncharged object is placed close to a charged object, the objects can attract or repel each other. When two electrically charged objects is placed closed to another object that is uncharged?
A) An electrically charged object needs to touch an uncharged object before they attract or repel.
B) When an electrically charged object comes close to an uncharged object, it will attract it.
C) If an electrically charged object is near an uncharged object, it will repel it.
D) When two electrically charged objects are placed close together, they only attract.]
Suppose that Earth's polar ice caps melted and the water returned to the oceans, so that the oceans were deeper by about 31.2 m. What effect would this have on Earth's rotation? Make an estimate of the resulting change in the length of the day. (Concern has been expressed that warming of the atmosphere resulting from industrial pollution could cause the ice caps to melt.) Number i Units
Due to this shift in day length, 0.409 seconds were added. Ocean's atmosphere and depth increased by about 31.2 m as a result of the melting of the polar ice caps and the subsequent return of water.
The oblique angle at which the sun's energy enters the Earth's atmosphere causes it to spread out over a larger area, be less concentrated, and travel a greater distance through the atmosphere before it can be absorbed during , resulting in less intense solar radiation in the polar ice regions than in other parts of the planet. Are known as polar ice.
According to the available information, the oceans were about 15.1 metres (m) deeper, which actually means that the water level rose by 15.1 meters.
As a result, the following formula will be used to calculate the change in the earth's radius: dR=15.6 m
dT = 2TdR/R = 2*24*3600*15.1/6371000 = 0.409s
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Radio stations can broadcast their signals over great distances. Which property enables a radio station signal to travel far from the source?.
The property that makes the radio waves to travel over a very large distance is the fact that it has a long wavelength.
What are radio waves?We know that radio communication have given birth to the modern communication gadgets that we have now that involves the fact that we can be able to send signals over a very long distance.
It should be noted that the use of the radio waves is made quite easy because the radio waves can be able to travel across a very large distance and can be able to move at a very fast pace from one place to the other.
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Answer:
Explanation:
a
consider a binary liquid mixture of a and b, where a is volatile and b is nonvolatile. the composition of the solution in terms of mole fraction is xa
The composition of the solution in terms of mole fraction will simply be equal to the mole fraction of the volatile liquid.
It is given that the liquid a is volatile and b is non-volatile. Since the solute a is not volatile, the mole fraction of the solute is not to be taken into account for. Being non-volatile, the liquid aa will not be contributing to the partial pressure. Hence, the partial pressure will only depend on the mole fraction of b which is given to be volatile.
Therefore, here we will only have to consider the mole fraction of the volatile liquid b and not the involatile liquid a.
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(6%) Problem 9: You have a horizontal grindstone (a disk) that is 91 kg, has a 0.33 m radius, is turning at 92 rpm (in the positive direction), and you press a steel axe against the edge with a force of 15 N in the radial direction
Part (a) Assuming that the kinetic coefficient of friction between steel and stone is 0.20, calculate the angular acceleration of the grindstone in rad/s2 Part (b) What is the number of turns, N, that the stone will make before coming to rest?
The angular acceleration of the grindstone is 0.199 rad / s²and the number of turns, N, that the stone will make before coming to rest is 36.94 rev.
(a)To solve this, we will use Newton's second law for rotational movement, i.e. torque
τ = I α
⇒ f × r = I × α
Now we write the translational Newton equation in the radial direction
N- F = 0
⇒N = F
The friction force equation is
f = μ N
⇒ f = μ F
The moment of inertia is
I = ½ m r²
Let's replace in the torque equation
(μ F) r = (½ m r²) α
α = 2 μ F / (m r)
α = 2 (0.2)15/ (91 × 0.33)
α = 0.199 rad / s²
b) Using the relationship of rotational kinematics
w² = w₀² - 2 α θ
0 = w₀² - 2 α θ
θ = w₀² / 2 α
Reducing the angular velocity,
w₀ = 92 rpm (2π rad / 1 rev) (1 min / 60s) = 9.634 rad / s
θ = (9.634)² / (2 × 0.199)
θ = 232 rad
Reducing radians to revolutions
θ = 232 rad (1 rev / 2π rad)
θ = 36.94 rev
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calculate the ratio of the magnetic and electric forces on the plates and show that the magnetic force is always smaller.
FF=EvB=vEB=cv represents the relationship between the electromagnetism forces acting on the plates.
What do you think an electrical force is?Electric force is the interaction of any opposite charges bodies that is either repellant or attracting. The impact and effects it has on the target body are outlined by Newton's theory, just like any other force. A number of forces affect objects, including the electric force.
What other sorts of electric forces exist?Electric Forces as well as Their Types: Attractive and repulsive electrical forces are the two main types of electrical forces. Charges that are opposed to one another attract one another whereas those that are similar repel one another.
The magnetic force is always smaller as - The magnetic field's strength is determined by the charge's velocity, such as the current flowing through a wire (v=a few cm/s), or by the distance from the source. a radius of an electron ([tex]r=10^-15[/tex]). The Magnetic-field is substantially smaller than the E-field unless there are electromagnetic waves (EM-waves), in which case the magnetic field is equivalent to the electric field.
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Are goods that are necessities elastic or inelastic?.
Necessities are inelastic.
Goods that are taken into consideration important have a low elasticity of call for. Strength, fuel, oil, and water are all particularly inelastic because clients depend upon these as requirements in place of luxuries.
An elastic call is one wherein the exchange in the amount demanded because of a change in rate is big. An inelastic call is one in which the alternate quantity demanded because of a change in price is small.
Perfectly inelastic merchandise would be something like air or water, and no person can sincerely restrict that at this factor in time.
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why is the maximum difference in potential energy between atoms when placed in a magnetic filed of 3.5 t? you may ignore the magnetic spin.
The maximum difference in potential energy would be [tex]ΔE max =8.12×10 −4 eV[/tex]
What is potential energy?The energy that is held in an object as a result of its position in relation to a zero position is known as potential energy, to put it simply. If an object is placed at a height above (or below) the zero height, it has gravitational potential energy.
Energy that is conserved or stored in a substance or object is known as potential energy. The position, organization, or state of the object or substance determines the amount of stored energy.
It can be pictured as energy with the "potential" to perform labor. The energy will be released when the object's position, configuration, or state changes.
For instance, compressing a spring costs energy. However, what happens to that energy once the spring has been compressed? After all, we are aware that energy can only be changed from one form to another; it cannot be generated or destroyed.
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For what angle of incidence at the first mirror will this ray strike the midpoint of the second mirror (which is s = 28.8 cm long) after reflecting from the first mirror?
The angle of incidence at the first mirror will this ray strike the midpoint of the second mirror is 34.6°
Two plane mirrors intersect at right angles. A laser beam strikes the first of them at a point d = 10.0cm from their point of intersection.
To strike the midpoint of the second mirror, the ray of light will have to travel half of the distance vertically
i.e. 29/2 = 14.5
We can solve this through trigonometry.
Let the angle between the ray and the vertical plane mirror is known as α
tan α = 10/14.5
α = = 34.6°
The angle of incidence is the angle between the ray and the normal line of the mirror.
Let the angle of incidence of the first mirror be β
β = α = 34.6
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which of the following wireless standards can transmit data at 1300 mbps (megabits per second) or 162.5 mbps (megabytes per second)? 802.11g 802.11ac 802.11n 802.11b
802.11 ac can transmit data at 1300 mbps (megabits per second) or 162.5 mbps (megabytes per second).
What is 802.11 ac wireless standard?You may have noted that the time between 802.11n and 802.11ac was six years. In terms of technology, this is an aeon, and the main advantage that 802.11ac has benefited from is speed.
WiFi is frequently advertised at "theoretical" rates; according to this standard, 802.11ac can do 1300 Mbps, which is the equivalent of 162.5 MB/s (MBps). This is three times quicker than the normal 802.11n speed of 450Mbps.
These speeds are the issue. The fastest 802.11ac real world speeds reported in testing are roughly 720Mbps. In the real world, no one ever achieves theoretical speeds (90MBps). While 802.11n has a peak speed of roughly 240Mbps (30MBps), the 3x estimate is still accurate.
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the two particles are both moving to the right. particle 1 catches up with particle 2 and collides with it. the particles stick together and continue on with velocity v f. which of these statements are true?
For this given case of inelastic collision, statement C is true that is, vf is greater than v2, but less than v1.
What is inelastic collision and how does it explain the situation?According to the conservation of linear momentum, when two or more bodies interact, their combined momentum stays constant. So, the total momentum of the system just prior to the collision and the total momentum immediately following the collision are the same in a system of colliding bodies.
The collision is considered to be perfectly inelastic if the two bodies stick together after colliding and move at the same speed. Inelastic collisions are collisions where the kinetic energy is not preserved.
The collision described in the given question is completely inelastic- Prior to a collision, particle 1 had a higher beginning velocity than particle 2. Following the collision, the speed of particle 1 will decrease as it passes some of its kinetic energy to the colliding particle 2, while the speed of particle 2 will increase as it absorbs some of the kinetic energy of particle 1.Thus, the velocity of both the bodies together (vf) is greater than v2, but less than v1.
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The complete question is:
The two particles are both moving to the right. Particle 1 catches up with particle 2 and collides with it. The particles stick together and continue on with velocity vf. Which of these statements is true?
a. vf= v2
b. vf is less than v2.
c. vf is greater than v2, but less than v1.
d. vf= v1
An object has a volume of 5 cm3 and a mass of 20 g. What is the density of the object?.
Answer:
[tex]d=4\frac{g}{cm^3}[/tex]
Explanation:
[tex]d=\frac{m}{v}\\m=20g\\v=5cm^3\\d=\frac{20g}{5cm^3}\\d=4\frac{g}{cm^3}[/tex]
When two lamps are connected in parallel to a battery, the total electrical resistance that the battery senses ismore than the resistance of either lamp.less than the resistance of either lamp.none of these
Yes this statement is true about electrical resistance circuit.
What is electrical resistance?
electrical resistance is a force that counteracts the flow of current.
Sol- when two lamps are connected in parallel to a battery, the total electrical resistance that the battery senses is more than the resistance of either . Beacuse In a parallel circuit each bulb is in its own circuit. As bulbs are added the resistance in the circuit decreases since each circuit is another pathway for electrons to move from one end of the circuit to the other.when two lamps are connected in series to a all the battery the electricals resistance that the battery's senses is the more than the resistence of either lamp.
As each bulb is connected in parallel to the battery, each has the same potential difference across it as the all of voltage across the battery of the terminals. All other to the potential differences are zero, as all the wires have to the zero resistance.
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A ceiling fan consists of a small cylindrical disk with 5 thin rods coming from the center. The disk has mass md = 3.3 kg and radius R = 0.26 m. The rods each have mass mr = 1.2 kg and length L = 0.72 m.a. What is the moment of inertia of each rod about the axis of rotation?b. What is the moment of inertia of the disk about the axis of rotation?c. What is the moment of inertia of the whole ceiling fan?d. When the fan is turned on, it takes t = 3.1 s and a total of 13 revolutions to accelerate up to its full speed. What is the magnitude of the angular acceleration?e. What is the final angular speed of the fan?f. What is the final rotational energy of the fan?g. Now the fan is turned to a lower setting where it ends with half of its rotational energy as before. The time it takes to slow to this new speed is also t = 3.1 s. What is the final angular speed of the fan?h. What is the magnitude of the angular acceleration while the fan slows down?
A solid body rotating about an axis has rotational kinetic energy that is proportional to both its moment of inertia and its angular speed of rotation about the axis.
The formula is: K=(1/2)I[tex]w^{2}[/tex]
The most straightforward form of rotational motion is a circle rotating around an axis. The rotational kinematics equations then resemble the linear kinematics equation:
θ [tex]= w_{i} t + \frac{1}{2} \alpha t^{2}[/tex]
[tex]w_{f} = w_{i} + \alpha t[/tex]
where α is the angular acceleration,
ω is the angular speed,
θ is the angle traveled and
t is the time.
Given data:
Mass of the disk, [tex]m_{d}[/tex]=3.3 kg
The radius of the disk, R=0.26m
Mass of the rod, [tex]m_{r}[/tex]=1.2 kg
Length of the rod, L=0.72 m
a) Think about the equation used to calculate the rod's moment of inertia.
[tex]I_{rod}[/tex] = [tex]\frac{1}{3} m_{r} L^{2}[/tex]
Calculate the moment of inertia of each rod about the axis of rotation.
[tex]I_{rod}[/tex] = [tex]13 * (1.2) * (0.72)^{2}[/tex]
[tex]I_{rod}[/tex] = [tex]0.207 kg m^{2}[/tex]
b) A disk's moment of inertia around an axis that passes through its center and is perpendicular to the disk is:
[tex]I_{disk}[/tex] = [tex]\frac{1}{2} m_{d} R^{2}[/tex]
We have,
[tex]I_{disk}[/tex] = [tex]\frac{1}{2} (3.3) (0.26)^{2}[/tex]
[tex]I_{disk}[/tex] = [tex]0.112 kg m^{2}[/tex]
c) The entire ceiling fan's moment of inertia.
[tex]I_{fan} = 5 I_{rod} + I_{disk}[/tex]
[tex]I_{fan} = 5 (0.207) + 0.112\\I_{fan} = 1.147 kg m^{2}[/tex]
d) Here we are given the angle covered and the time for it.
We can find the angular acceleration from the formula:
θ = [tex]\frac{1}{2} \alpha t^{2}[/tex]
We have:
θ = 13 rev
θ = 13(2π) rad
θ = 26π rad ≈ 81.68 rad
Therefore we have:
[tex]\alpha = 2[/tex]θ / [tex]t^{2}[/tex] = [tex]\frac{2(26\pi )}{3.1^{2} }[/tex] = 17 rad / [tex]s^{2}[/tex]
e) To find the final angular velocity of the fan we have:
[tex]w_{f} = w_{i} + \alpha t[/tex]
Substitute [tex]w_{i}[/tex] = 0, [tex]\alpha[/tex] = 17 rad / [tex]s^{2}[/tex], and t=3.1s in the above expression:
[tex]w_{f} = 0 + 17 (3.1)[/tex]
[tex]w_{f} = 52.7 rad / s[/tex]
f) Consider the formula used to calculate the final rotational kinetic energy of the fan.
K = [tex]\frac{1}{2} I_{fan} w_{f}^{2}[/tex]
Substitute the values.
K = [tex]\frac{1}{2} (1.147) (52.7)^{2}[/tex]
K = 1593 J
g) The spinning energy of the fan decreases by half when it is adjusted to a lower speed.
This can give us angular speed.
[tex]K_{f} = \frac{K}{2}[/tex]
[tex]K_{f} = \frac{1593}{2}[/tex]
[tex]K_{f} = 796.5 J[/tex]
Calculate the final angular speed of the fan.
[tex]K_{f} = \frac{1}{2} I_{fan} w_{f}^{2}[/tex]
[tex]w_{f} = \sqrt{\frac{2K_{f}}{I_{fan} } }[/tex]
Substitute the values.
[tex]w_{f} = \sqrt{\frac{2(796.5)}{1.147} }[/tex]
[tex]w_{f} = 37.3 rad / s[/tex]
h) The angular acceleration is calculated when the fan slows down by
[tex]w_{f} = w_{i} + \alpha t[/tex]
[tex]\alpha[/tex] = [tex]\frac{w_{f} - w_{i} }{t}[/tex] = [tex]\frac{37.3 - 52.7}{3.1}[/tex] = − 4.97 rad / [tex]s^{2}[/tex]
Therefore, the magnitude of the angular acceleration is:
|[tex]\alpha[/tex]| = 4.97 rad / [tex]s^{2}[/tex]
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find the average power pavg created by the force f in terms of the average speed vavg of the sled. express your answer in terms of f and vavg .
If Pavg = Fvavg, Given that we are attempting to find the velocity and the equation P = Fs/t states that the P (power) produced by the F (force) is: P = Fv, If the force F is constant and the object's speed is constant, then
What is meant by velocity?The velocity of an object or a body movement determines its direction. Speed is often a scalar quantity. Mass and velocity quantity in its most basic form. It gauges the rate of change in a distance. It relates to how quickly displacement is altering.
From the query, we learn that
The average power is mathematically denoted by the following expression:
[tex]P_{avg} = \frac{P}{delta (t)} \\[/tex]
Where W = Workdone ,
which is mathematically represented as - [tex]\\W = FX s[/tex]
F is the applied force, and s is the force-related displacement.
So,
[tex]P_{avg} = \frac{F X s}{delta (t)} \\[/tex]
displacement can be represented mathematically as
[tex]= > s = v_{avg} X delta(t)[/tex]
[tex]P_{avg} = \frac{F X v_{avg} X delta(t)}{delta (t)} \\\\P_{avg} = F X v_{avg}[/tex]
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A radio antenna broadcasts a 1.0 MHz radio wave with 25 kW power. Assume the radiation is emitted uniformly in all directions. 1) what is the wave's intensity 30 km from the antenna 2) what is the electric field amplitude at this distance?
The radio antenna broadcasts a 1M Hz radio wave with 25 kW power.
1) The wave's intensity 30 km from the antenna is 8.842 * 10⁻⁶ W/m².
2) The electric field amplitude at this distance is 81.4 V/m.
The intensity of wave equation is given as
I = P/4πr²
where P is the power of radio wave (25 * 10³ W)
r is the distance from the source (30 * 10³ m)
I = (25 * 10³) / 4π (30 * 10³)² = 0.0000088419 W/m² = 8.842 * 10⁻⁶ W/m²
The relation between intensity of the wave and the electric field is given as
I = 0.5 * c * ε₀ * E²
where, c is the speed of light
ε₀ is the electric permitivity
E is the electric field
Now, let us make E as the subject,
E = √(2I/c ε₀) = √(2 * 8.8 * 10⁻⁶)/(3 * 10⁸ * 8.85* 10⁻¹²) = √(17.6 * 10⁴ / 26.55) = 0.814 * 10² = 81.4 V/m
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If the ball is released from rest at a height of 0.83 m above the bottom of the track on the no-slip side, what is its angular speed when it is on the frictionless side of the track? Assume the ball is a solid sphere of radius 3.8 cm and mass 0.14 kg .
How high does the ball rise on the frictionless side?
90 rad/s (Nearly)
Given that, mass, m=0.14 kg
Ball is released from rest at a height of, h= 0.83 m
Solid sphere of radius, R = 3.8 cm
=0.038 m
From the conservation of energy
ΔK = ΔU
1/2 mv2 + 1/2 Iω2 = mgh
Here, I=2/5MR2 , v=Rω
1/2 mv2 + 1/2 (2/5mR2)(v/R)2 =mgh
1/2 [v2 +2/5 v2] =gh
7/10 v2 = gh
0.7v2 = gh
v =√ [gh / (0.7) ]
=√ [(9.8 m/s2)(0.83 m) / (0.7) ]
= 3.408 m/s
Hence, angualar speed when it is on the frictionless side of the track,
ω= v/R
= (3.408 m/s)/(0.038 m)
= 89.7 rad/s
˜ 90 rad/s (Nearly)
Friction is a force, the resistance of movement whilst one object rubs in opposition to any other. every time gadgets rub against each different, they reason friction.
Friction works against the motion and acts in the opposite route. the quantity of friction depends at the substances from which the two surfaces are made.
The frictional pressure itself is directed oppositely to the motion of the item. due to the fact the friction to date described arises between surfaces in relative motion, it's miles referred to as kinetic friction. Static friction, in assessment, acts between surfaces at rest with respect to each different.
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a 0.6 kg baseball experiences 12 n of force for a duration of 0.1 seconds. what is the change in velocity of the base ball?
The change in the velocity of the baseball is 2 m/s.
Given that,
Mass of the baseball, m = 0.5 kg
Force, F = 10 N
Time duration of force, t = 0.1 s
To find, The change in velocity of the baseball.
Solution,
The impulse imparted by an object is given by :
Impulse is equal to the change in momentum of an object i.e.
(v-u) is the change in velocity of the baseball
(v-u)= 2 m/s
So, the change in velocity of the baseball is 2 m/s.
The pace is the directional speed of an item in movement as an indication of its price of change in role as located from a specific frame of reference and as measured by a specific general of the time.
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once hydraulic pressure exceeds psi, the system can power the landing gear, main gear doors, flaps, speed brake, and nose wheel steering
This is the measure of the change in pressure from one point in a hydraulic system to another.
It either represent the loss between two points or the energy extracted from from a system to do work (as in a hydraulic motor).Pressure drop is also referred to as “Delta P”.ΔP=P-P'Many factors contribute to this concept but the largest factor is generally the viscosity of the fluid. This along with the conduit diameter (hose/pipe diameter), volume flow rate and the distance between the two points being measured as all contribute to the final loss in pressure or pressure drop.Line loss pressure drop then configures into the inefficiency of a system and affects how much heat must be removed.To learn about hydraulic system -
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PLEASE SOMEONE HELP ME THIS IS DUE AT 11:59 pm PLEASE AT CHINA TIME
If energy creates heat, how does an air conditioning unit use energy to cool?
Explanation:
The liquid refrigerant evaporates in the indoor evaporator coil, pulling heat out of indoor air and cooling your home. The hot refrigerant gas is pumped outdoors into the condenser where it reverts back to a liquid, giving up its heat to the outside air flowing over the condenser's metal tubing and fins.
on a frictionless, horizontal air table, puck aa (with mass 0.200 kgkg) is moving toward puck bb (with mass 0.400 kgkg), which is initially at rest. after the collision, puck aa has a velocity of 0.120 m/sm/s to the left, and puck bb has a velocity of 0.650 m/sm/s to the right.
The change in total kinetic energy of the system that occurs during the collision is 0.05 J.
Given that, m₁ = 0.200 kg
m₂ = 0.400 kg
u₁ = ?
u₂ = 0
v₁ = 0.120 m/s
v₂ = 0.650 m/s
According to the law of collision, we have
m₁ u₁ + m₂ u₂ = m₁ v₁ + m₂ v₂
Substituting the given data in the above equation, we have
m₁ u₁ = m₁ v₁ + m₂ v₂ - m₂ u₂
m₁ u₁ = 0.2* (-0.12) + 0.4* 0.65 - 0.4* 0
0.2* u₁ = -0.024 + 0.26
u₁ = 1.18 m/s
Change in kinetic energy = Kinetic energy before collision - Kinetic energy after collision
= -1/2 (0.2) 0.12² - 1/2 (0.4) 0.65² + 1/2 (0.2) 1.18² = -0.00144 - 0.0845 + 0.1392 = 0.05326 J
Thus, the change in kinetic energy is 0.05 J.
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an object hangs motionless from a spring. think about the sum of the elastic potential energy of the spring and the gravitational potential energy of the object and earth (uspr ug). when the object is pulled down and held, this sum
Furthermore, as the spring is pushed down, the work done is stored as elastic potential energy. As a result, the total of elastic potential energy and gravitational potential energy will rise.
Does an elastic item have gravitational potential energy?If an item is above (or below) the zero height, it has gravitational potential energy. If an item is at a position different than the equilibrium position on an elastic medium, it has elastic potential energy.
Gravitational potential energy is energy contained in a vertically held item. Elastic potential energy is stored energy in things that can be stretched or squeezed.
The amount of the force necessary to modify the length of a spring-like item.
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What are the similarities and what are the differences between solar thermal and PV?.
Solar thermal and photovoltaic (PV) are two different technologies used to harness energy from the sun. Solar thermal systems use the sun’s rays to heat water or air while PV systems convert sunlight directly into electricity.
Both technologies have similarities and differences, and each can be used in various applications. The most important similarity between solar thermal and photovoltaic systems is that they both use the sun’s energy to produce energy. In both cases, the sun’s rays are converted into usable energy. Solar thermal systems use the sun’s heat to heat water or air, while PV systems use the sun’s light to generate electricity. Both systems are also relatively easy to install and maintain, and require little to no additional energy input.
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As a spaceship decreases its distance from the Earth, the gravitational force on the spaceship due the Earth:stays the sameincreasesdecreases
The gravitational field produced by the Sun, Earth, Moon, and other planets extends throughout space. However, the gravitational pull of that distance diminishes.
What is gravitational pull?
The attraction that the earth has on something or that something has on the earth is known as the gravitational pull of a earth. It can be calculated using the object's mass, Earth's mass, the separation between the object's and Earth's centres, and the universal gravitational continuous, a proportionality constant that has been precisely measured. It is 6.674 x 10-11 in size. The weight of an item on the earth's surface is one of the most typical illustrations of this pull.
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How long is a 20 meter wavelength?.
A 20-meter wavelength is 14.000 MHz to 14.350 MHz.
Wavelength can be defined as the distance between two consecutive peaks or valleys. Measured in the direction of the wave. The wavelength of light is an important property that determines the properties of light. Red light has a different wavelength than blue light, and green light has a different wavelength from both.
Wavelength is the distance between two wave crests and the same for wave troughs. Frequency is the number of oscillations that pass through a particular point in one second, measured in cycles per second. The wavelength of light is defined as the distance between two successive peaks or troughs of a light wave.
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the sound from one tuning fork can force another to vibrate. what is the analogous effect for light?
The vibrating energy carried from one to another via sound waves. The atoms in the tuning fork vibrate and transfer from one place to another. As a result, the situation is equivalent to analogous effect for light.
What is the analogous effect for light?
Light generated by resonant vibrations of an electron orbiting one atom can be absorbed by an electron in another atom with the same resonant frequency of vibration. In reality, visible "light" is a type of radiation, which is defined as energy that moves in the form of electromagnetic waves. It can alternatively be defined as a continuous flow of particle-like 'wave-packets,' known as photons, that travel at the speed of light (about 300 000 kilometres per second). Light waves emanate from a source. Each wave is composed of two parts: an electric and a magnetic component. That is why light is referred to be Electromagnetic Radiation.
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if a person were traveling at 1/2 the speed of light, how long would it take them to travel a light-year from their own point of view?
It would take a human little more than 22 years to cross the same distance if they could move at half the speed of light.
How much time does light need to traverse one second?The speed of light is 300,000 kilometres (186,000 mi) per second. In other words, light covers the same distance in a single second as it would take you to circle the Earth 7.5 times! About one light second separates you from the moon.
What happens if you move at a speed that is half that of light?Even time is a relative concept. This led scientists to conclude that the speed of light is constant and unaffected by the observer.
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Which changes of state do the labels represent? a: b: c:
A represents the so-called sublimation of state. represents the evaporation, a state change. C stands for melting, a change of state.
What does evaporation kid mean?A liquid turns into a gas through evaporation. Water vapor is created when liquid water evaporation turns it into a gas. Water is helped to evaporate and return to the atmosphere by the heat of the sun. There, it creates a cloud and returns to being water in the form of vapor.
What exactly happens during evaporation?Evaporation is the process by which liquid water transforms into gaseous water (water vapor). Water from the Earth's surface is carried into the atmosphere by evaporation. Evaporation occurs when heat energy causes the bonds holding the water molecules together to fall apart.
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Where P pressure and V volume what happens to the pressure as the volume approaches 0 explain your reasoning?.
The pressure tends to zero pascals when the gas volume approaches very high volumes. On the other end of the graph, we can observe that the pressure tends to infinity as the volume decreases towards zero.
I.E. When the volume tends to 0, the pressure will tend to infinity.Volume and pressure are inversely related. Therefore, the volume will decrease as the pressure does, and vice versa.
Now, as the volume gets closer to zero, the pressure will dramatically rise and eventually tend to infinity. At v=0, the pressure-volume curve will asymptote.
As a result, when the volume comes to zero, the pressure will tend to infinite.
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What is the evidence for dark matter and dark energy?.
The discussion of light and the expansion of Universe are the dark energy and dark matter exist.
A dark matter is a theoretical astronomical thing postulated by the scientist which is believe to take several forms and it is non luminous nature which exist in far space.
Similarly dark energy is the energy that is postulated by the scientist which is believe to be a force that is working against the gravity that almost all the universe and is constantly causing the expansion of the space.
Scientist in studied the nature of light and how the light disorted in the Galaxy clusters computer to a road map that dark matter exist in the universe. The constant expansion of the universe is itself a proof of presence of the dark energy.
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The Tornado i a carnival ride that conit of a vertical cylinder that rotate rapidly about it vertical axi. A the Tornado rotate, the rider are preed againt the inide wall of the cylinder by the rotation, and the floor of the cylinder drop away. The force that point upward, preventing the rider from falling downward, i a) friction force. C) gravity. B) a normal force. D) a tenion force
Normal forces are those that are directed upward force and stop the rider from falling downhill. The normal force is the pressure that surfaces provide to stop solid objects from piercing one another.
In touch, normal force is a force. Two surfaces cannot exert a normal force on one another if they are not in contact.
The Tornado is a roller coaster that features a vertical cylinder that spins quickly around its vertical axis. The rider is pushed against the inside wall of the cylinder by the rotation of the tornado, and the cylinder's floor falls away. Normal forces are those that are directed upward and stop the rider from falling downhill.
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