Answer:
In reverse faults, the hanging wall moves upwards relative to the footwall.
In glass, light travels with a speed of 2.0 × 10^8 m/s. Light with a frequency of 3.6 × 10^14 Hz moves through the glass. What is the wavelength of the light?
Answer:
Approximately [tex]5.56 \times 10^{-7}\; {\rm m}[/tex] in this glass.
Explanation:
The frequency of a wave is the number of periods that this wave completes per unit time.
The speed of a wave is the distance that this wave travels in unit time.
Thus, dividing the speed [tex]v[/tex] of the wave by the frequency [tex]f[/tex] of this wave would give the distance that this wave covers in each period (cycle) of this wave. By definition, the distance that a wave covers in each period is precisely the wavelength of this wave. Therefore, an equation for the wavelength [tex]\lambda[/tex] of a wave would be:
[tex]\begin{aligned}\text{wavelength} &= \frac{\text{speed}}{\text{frequency}}\end{aligned}[/tex].
[tex]\begin{aligned}\lambda &= \frac{v}{f}\end{aligned}[/tex].
Note that [tex]1\; {\rm Hz} = 1\; {\rm s^{-1}}[/tex].
The wavelength of this light in this glass would be:
[tex]\begin{aligned}\lambda &= \frac{v}{f} \\ &= \frac{2.0 \times 10^{8}\; {\rm m\cdot s^{-1}}}{3.6 \times 10^{14}\; {\rm s^{-1}}} \\ &\approx 5.56 \times 10^{-7}\; {\rm m}\end{aligned}[/tex].
A car takes 2 hour to travel 300 km along a main road and then ½ hour to travel 30 km along a side road. What is the average speed of the car for the whole journey?
also write steps
The state highway patrol radar guns use a frequency of 9.50 GHz. If you're approaching a speed trap driving 37.9 m/s, what frequency shift will your FuzzFoiler 2000 radar detector see
The frequency shift your FuzzFoiler 2000 radar detector will see is 10.6 GHz.
Doppler effect
The doppler effect show the frequency shift of a source of sound relative to an observer depending on their relative motion.
The frequency shift f' = f(v ± v')/(v ± v") where
f = frequency of source = 9.50 GHz, v = speed of sound = 330 m/s, v' = speed of detector = speed of car = 37.9 m/s and v" = speed of source = 0 m/s (since the highway patrol car is stationary)Since the detector (our car) approaches the source (the radar gun), we use the positive sign in the numerator and a negative in the denominator
So, f' = f(v + v')/(v - v")
Since v" = 0, we have
f' = f(v + v')/(v - 0)
The frequency shiftf' = f(v + v')/v
Substituting the values of the variables into the equation, we have
f' = 9.50 GHz(330 m/s + 37.9 m/s)/330 m/s
f' = 9.50 GHz(367.9 m/s)/330 m/s
f' = 9.50 Ghz × 1.115
f' = 10.6 GHz
So, the frequency shift your FuzzFoiler 2000 radar detector will see is 10.6 GHz.
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a sphere with a diameter of 4.00 cm is charged to 50 v. what is the charge on the sphere?
When a sphere with a diameter of 4.00 cm is charged to 50V, the charge on the sphere is 1.11×10⁻¹⁰ Coulomb.
What is capacitance?The amount of separated electric charge that may be stored on an electric conductor, or set of conductors, in relation to a unit change in electrical potential is known as capacitance.
The term "capacitance" also suggests the storage of electrical energy. When two initially uncharged conductors receive electric charge from one another, they both become equally charged—one positively and the other negatively.
Diameter of the sphere: d = 4.00 cm = 0.04 m.
Potential difference applied across it: V = 50 volt.
The capacitance of the sphere: C = 4πε₀ (d/2)
= (0.04/2) (1/9×10⁹)
= 2.2 ×10⁻¹² F.
Hence, the charge on the sphere is: Q = CV
= 2.22 ×10⁻¹² F × 50 V
= 1.11×10⁻¹⁰ Coulomb.
So, the charge on the sphere is 1.11×10⁻¹⁰ Coulomb.
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When a simple lever rocks about it's fulcrum, or a pulley turns about its axis, a small fraction of input energy is converted into _________ energy.
ENERGY
When a simple lever rocks about its fulcrum, or a pulley turns about its axis, a small fraction of input energy is converted into THERMAL ENERGY
What does the law of conservation of energy state?
A. that energy cannot be created or destroyed B. that energy cannot be transformed from one form to another
C. that one form of energy cannot be transformed into two other forms at the same time
D. that energy can be created or destroyed only during energy transformations
if the average speed of a car is 45 km/hr , how far can it travel in 30 mins ?
3. What do we call the ONLY part of the electromagnetic spectrum that we can
see with our eyes?
Radio Waves
Gamma Rays
X-Rays
Visible Light
Answer:
Visible Light
wavelength = 4000 - 7000 Angstroms = 400 - 700 milli-microns
1 A unit = 10^-10 m
1 mμ = 10^-9 m
A group of atoms that are joined together by chemical bonds form a larger particle called a
Answer:
molecule
Explanation:
A bar magnet was placed underneath a sheet of paper where a pile of iron filings sits. In the presence of the energy stored in the magnetic field, the iron filings arranged themselves, creating lines of force. How do the energy and the lines of force change when a stronger bar magnet is used
Answer: 1. The field energy will increase
2. The energy increases, and the lines of force are denser
3. It points toward the field of earths magnetic poles
4. 1 and 2 only
5. 2, 4, 1, 3
Explanation: just took it
what is the wavelength of a 10 Hz wave that travels with a speed of 5 m/s?
A. 2.0 m
B. 0.5 m
C. 1.0 m
D. 0.25 m
PLEASE HELP
The wavelength of a 10 Hz wave that travels with a speed of 5 m/s is 0.5 m. Hence option B is correct.
What is wave ?Wave is is a disturbance in a medium that carries energy as well as momentum . wave is characterized by amplitude, wavelength and phase. Amplitude is the greatest distance that the particles are vibrating. especially a sound or radio wave, moves up and down. Amplitude is a measure of loudness of a sound wave. More amplitude means more loud is the sound wave.
Wavelength is the distance between two points on the wave which are in same phase. Phase is the position of a wave at a point at time t on a waveform.
There are two types of the wave longitudinal wave and transverse wave.
Longitudinal wave : in which, vibration of the medium (particle) is parallel to propagation of the wave. Sound wave is a longitudinal wave.
Transverse wave : in which, vibration of the medium (particle) is perpendicular to propagation of the wave. Light wave is a transverse wave.
speed of the wave is given by,
c = νλ
Given,
Speed c = 5 m/s
frequency ν = 10 Hz
wavelength λ = ?
c = νλ
5 = 10λ
λ = 5/10 = 0.5 m
Hence option B is correct.
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write down the principle of lever?
= ????
When a block slides a certain distance down an incline, the work done by
gravity is 300 J. What is the work done by gravity if this block slides the same
distance up the incline?
Pls help :) asappppppp
Answer:
your answer is B
Explanation:
Tick the correct statement and cross the wrong ones.
a) the unit of power is horsepower. __
how many H atoms are present?
SNH4OH
Answer:
there are 5 atoms of H per molecule of NH4OH we have
Liquid pressure decreases as depth in liquid from the top increases. True or False.
Answer: The answer is False.
Pressure increases as the depth increases because the pressure in a liquid is due to the weight of the column of water above. Since the particles in a liquid are tightly packed, this pressure acts in all directions. The greater pressure at the bottom would give a greater 'force per unit area' on the container wall.
૮⸝⸝ > ꇴ <⸝⸝ づ━☆*:･ﾟ✧ ThAnK y0uThe __ mass a particle has and the __ the particle's speed, the more kinetic energy the particle has.
[tex]\qquad \qquad\huge \underline{\boxed{\sf Answer}}[/tex]
The more mass a particle has and the higher the particle's speed , the more kinetic Energy the particle has.
The reason for that is ~
Mass and Velocity are in proportional relationship with kinetic Energy.
A car moving to the East speeds up from rest to 8 m/s in 2 s. What is its acceleration?
to the East speeds up from rest to 8 m/s in 2 s. What is its acceleration
The acceleration of the car having velocity 8 m/s in time 2 s is 4 m/s².
What is meant by acceleration ?Acceleration of a moving body is defined as the rate of change of its velocity.
Here,
Initial velocity of the car, u = 0 since the car was at rest initially.
Final velocity of the car, v = 8 m/s
Time taken by the car, t = 2 s
Using the first equation of motion,
v = u + at
Applying the values of v, u and t,
8 = 0 + a x 2
2a = 8
Therefore,
Acceleration of the car, a = 8/2
a = 4 m/s²
Hence,
The acceleration of the car having velocity 8 m/s in time 2 s is 4 m/s².
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A change in the termal energy of a substance can lead to a change of state. For example, when heat is added to a solid, its particles move _______________.
faster • the same speed • slower • closer together Please Help.
Answer:
lado
Explanation:
because it is easy to do
why does a magnet apply force to a current-carrying wire?
Answer:
Because charges ordinarily cannot escape a conductor, the magnetic force on charges moving in a conductor is transmitted to the conductor itself. The magnetic field exerts a force on a current-carrying wire in a direction given by the right hand rule 1 (the same direction as that on the individual moving charges).
Explanation:
The magnet apply force to a current-carrying wire due to the magnetic field produced around a current-carrying wire.
What is a magnetic field?It is the type of field where the magnetic force is obtained. A magnetic field is the field felt around a moving electric charge.
The law of Ampere governs the phenomena of producing a magnetic field when an electric current is sent through a straight conducting wire.
The magnetic force on charges travelling in a conductor is imparted to the conductor itself, since charges cannot normally exit a conductor.
The magnetic field exerts a force on a current-carrying wire in the right-hand rule 1 direction, the same direction as that on the individual moving charges.
Hence,the magnet apply force to a current-carrying wire due to the magnetic field produced around a current-carrying wire.
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An electron has a charge of - 1.6x10 ^ - 19 C and a proton has a charge of 1.6x 10 ^ - 19 C . In a hydrogen atom, the distance between them is 5.3x 10 ^ - 11m Determine the electrostatic force between them.
Answer:, , 8.2 . 10^-6, ATTRACTIVE
Explanation:
The magnitude of the electrostatic force between two charges is given by Coulomb's law
I'm.begging begging from y'all help me pls........
if volume of an object is "V" density of fluid "p" and gravitational acceleration is "g". derive an expresion for upthrust (u) exert on the object in terms of V,p,g. when an object is fully immersed in water
Hey there mate ;),
Given:
V = volume
p (rho) = density of fluid
g = gravitational acceleration
To derive expression for upthrust, we have:
Upthrust = V×p×g
→ u = V×p×g
Therefore the expression for upthrust exerted on object in terms of Volume, rho and acceleration is :-
u = V×p×g
A train burns coal to power its engine. The engine makes the train move.
What kind of energy transformation is taking place?
Answer: mechanical energy to power the train.
Explanation:
Which scientific study involves geology, geography, and ecology?
physics
earth science
astronomy
chemistry
Earth Science is the scientific study which involves geology, geography, and ecology.
Hope it helps...Answer:
earth science!
Explanation:
A 1.5 kg block is connected by a rope across a 50-cm-diameter, 2.0 kg , pulley that spins on a frictionless axle, as shown in (Figure 1). A constant 10 N tension is applied to the other end of the rope. Starting from rest, how long does it take the block to move 30 cm ?
The time it takes the block to move 30cm is 0.56 seconds
Data;
Mass = 1.5kgDiameter = 50cmTension = 10NDistance moved = 30cmThe Force balance on vertical directionT - mg = ma
T - 1.5g = 15a ...equation(i)
Using torque balance from center of pulley
[tex]\tau _n_e_t= FR-TR\\I\alpha =FR-TR[/tex]
where
I = moment of inertia about center = 1/2MR^2
[tex]\alpha =a/r[/tex]
Substitute the values into the equation
[tex](\frac{1}{2}*2.0*0.5^2) *\frac{1}{2}a= \frac{1}{2}*10-\frac{1}{2} *1.5*9.81 -\frac{1}{2} a*1.5\\0.75a+0.50a=-2.3575\\a=-1.9m/s^2[/tex]
The block moves backward since the acceleration is negative.
From the second equation of motion
[tex]S=ut+\frac{1}{2}at^2\\u=0\\t=?\\s=0.3\\0.3=0*t+\frac{1}{2}(1.90)t^2\\t=\sqrt{\frac{2.0*0.30}{1.90} }\\ t = 0.56s[/tex]
The time it takes the block to move 30cm is 0.56 seconds
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Usain Bolt holds the world record for the 100 meter dash running it in 9.58 seconds what was Usain Bolt speed when he broke the record?
Answer:
10.44m/s
Explanation:
speed = distance
time
speed = 100
9.58
speed= 10.44m/s
Which describes a positive or negative net force acting on an object? Check all that apply.
Answer:
Can I see the answers?
Explanation:
Objects x and y are connected by a string of negligible mass and suspended vertically over a pulley of negligible mass, creating an atwood’s machine, as shown in the figure. The objects are initially at rest, and the mass of object y is greater than the mass of object x. As object y falls, how does the gravitational potential energy of the object x-object y-earth system change? all frictional forces are considered to be negligible.
We have that the gravitational potential energy effect on the system is mathematically given as
The gravitational potential energy decreases because the center of mass of Object X and Object Y moves downward.Option C
From the question we are told
The objects are initially at rest, and the mass of object y is greater than the mass of object x. As object y falls, how does the gravitational potential energy of the object x-object y-earth system change? all frictional forces are considered to be negligible.Centre of massDue to reduce in top of Y, doable strength will limit and due to amplify in peak of X, achievable power will increase.
Now, PE = mgh.
Generally the equation for the Velocity of centre of mass is mathematically given as
[tex]V =\frac{ m1v1 + m2v2}{ m1 + m2}\\\\Therefore \\\\V =\frac{ (m1 - m2) v}{ m1 + m2}[/tex]
Hence, V is positive as m1 > m2
Therefore
centre of mass of system moves downwards.The conclusion
The gravitational potential energy decreases because the center of mass of Object X and Object Y moves downward.
Option C
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Complete QuestionObjects X and Y are connected by a string of negligible mass and suspended vertically over a pulley of negligible mass, creating an Atwood’s machine, as shown in the figure.
The objects are initially at rest, and the mass of Object Y is greater than the mass of Object X. As Object Y falls, how does the gravitational potential energy of the Object Y-Object Y-Earth system change? All frictional forces are considered to be negligible.
a
The gravitational potential energy increases because the center of mass of Object X and Object Y moves upward.
b
The gravitational potential energy increases because the center of mass of Object X and Object Y moves downward.
c
The gravitational potential energy decreases because the center of mass of Object X and Object Y moves downward.
d
The gravitational potential energy decreases because the center of mass of Object X and Object Y moves upward.
The force that contributed to the formation of planets, determines the motion of bodies in the solar system, and pulls objects to the center of Earth is called. Newton’s first law of motion states that an object at rest will stay at rest unless a force acts on it. It also states that an object in motion will stay in motion unless a force acts on the object. Newton’s first law of motion is also known as the law of.
Answer:gravity
Explanation:
gravity holds the planets in its orbit
Answer:
Newton's first law is called the law of inertia.
Explanation:
