a) U = 0 J
k = 0.383 J
E = 0.383 J
b) U = 0.0228 J
k = 0.155 J
E = 0.383 J
c) U = 0.1104 J
k = 0.272 J
E = 0.383 J
d) U = 0.248 J
k = 0.177 J
E = 0.383 J
Method for solving:The equations for kinetic energy is:
k= 1/2*m*[tex]v^{2}[/tex]
The equation for elastic potential energy is:
U= 1/2*ks*[tex]x^{2}[/tex]
Where,
m= mass of the block
v= velocity
ks= spring constant
x= displacement of the spring
(a)when compression= 0 cm
U= 1/2*ks*[tex]x^{2}[/tex]
U= 1/2*552*
= 0 J
Kinetic energy:
k= 1/2*m*[tex]v^{2}[/tex]
k= 1/2*(1.05)*
k= 0.383 J
Mechanical energy:
E= k + U
E= 0.383+0
E= 0.383 J
There will be no work done by friction or any other dissipative force, hence this energy will be conserved, or it will remain constant (like air resistance). This indicates that only spring potential energy will be created from the kinetic energy (there is no thermal energy due to friction, for example).(b) spring potential = ?
U= 1/2* 457 N/m*[tex](0.01)^{2}[/tex]
U= 0.0228 J
Since the mechanical energy must remain constant, we may calculate the kinetic energy using the mechanical energy equation:
E= k + U
0.383= k + 0.0228
k= 0.383 - 0.228
k= 0.155
(c)spring constant when x= 0.02
U= 1/2*552*[tex](0.02)^{2}[/tex]
U= 0.1104 J
Using the equation of mechanical energy:
E= k +U
0.383= k+ 0.1104
k= 0.383 - 0.1104
k= 0.272 J
(d) U= 1/2*552*[tex](0.03)^{2}[/tex]
U= 0.2484 J
E= 0.383 J
k = E - U
k= 0.383- 0.206
k= 0.177
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A 1500-w heater is designed to be plugged into a 120-v outlet. part a what current will flow through the heating coil when the heater is plugged in?
Answer:
12.5 amps
Explanation:
Watt = volt * amp
1500 = 120 * I I = 12.5 amps
A 1500-w heater is designed to be plugged into a 120-v outlet. The current will flow through the heating coil when the heater is plugged in 12.5 Ampere.
To find the Current, the given values are:
Power p = 1500 W
Volt v = 120 v
What is Power?Power is the amount of work that is done per unit of time. It can be associated with the speed of a change of energy within a system, or the time it takes to perform a job.
There are different types of power,
Mechanical power: The work that performed by an individual or a machine in a certain period of time.
Electric power: The electric power can result of the multiplication of the potential difference between the ends of a load and the current flowing there.
Electric power can be written as,
P = VI
where, P - Power
V - Volt
I - Current intensity
Substituting all the values in the given formula,
1500 = 120 × I
I = 1500 / 120
= 12.5 Ampere
The current will flow through the heating coil when the heater is plugged in 12.5 Ampere.
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What is the electric potential energy of a 4. 0 uc charge placed at that point where the electric potential at that point in space is 8 v?
The electric energy is 32 uj
The electric potential of a point charge is [tex]V=kQ/r[/tex], or [tex]V = k Q / r[/tex]. Electric potential is a scalar while the electric field is a vector. While the total electric field can be computed by adding individual fields as vectors, the voltage resulting from a collection of point charges can be calculated by adding voltages as integers.
It is decided to set the potential at infinity to zero. [tex]E=Fq=kQr^2[/tex], but V for a point charge reduces with distance while decreasing with distance squared. Remember that the electric field E is a vector, but the electric potential V is a scalar with no direction.
The electric energy is (8×4)=32 uj
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The electric potential at that point in space is 8 v is 32uj
what is electric potential energy?
Potential energy is the energy within an object relative to its position and proximity to other objects within a field.
The electric potential of a point charge is V=kQ/rV=kQ/r , or V = k Q / rV=kQ/r . Electric potential is a scalar while the electric field is a vector. While the total electric field can be computed by adding individual fields as vectors, the voltage resulting from a collection of point charges can be calculated by adding voltages as integers.
It is decided to set the potential at infinity to zero.
but V for a point charge reduces with distance while decreasing with distance squared. Remember that the electric field E is a vector, but the electric potential V is a scalar with no direction.
The electric energy is (8×4)=32 uj
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Calculate the amount of extension of a spring with a spring constant of 3 kN/m, if the amount of work done in extending it is 35 N. Give your answer in m.
The extension of the spring is 4.83 m, if work done is 35 Newton and spring constant is 3 k N/m.
The spring constant, k, is a measure of the stiffness of the spring. it's far one of a kind for unique springs and materials. the larger the spring regular, the stiffer the spring and the greater.
Spring constant of 3 k N/m,
The amount of work done in extending is 35 N
WORK DONE by spring force = 1/2 k X²
⇒0.5 * 3 * X²
35 N = 0.5 * 3 * X²
X² = 35/1.5
x = [tex]\sqrt{23.33}[/tex]
X = 4.83 m
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The extension of the spring is can be found out by using the Work Done due to extension in Spring Constant K. The extension in the spring is 4.83m.
The spring constant, k, is a measure of the stiffness of the spring. It is for springs and materials which measures the ratio of force that affects the spring and the displacement caused by the force action.
Spring constant depends on the stiffness of the spring, wire thickness, number of turns in wound coil, length of spring and diameter of the coil.
Given:
Spring constant = 3000 N/m
Work Done in extension= 35 N
Let the extension in spring by x.
∴ Work Done by spring force = 1/2 kx²
Work done = 0.5 × 3 × x²
⇒ 35 N = 0.5 × 3 × x²
⇒ x² = 35/1.5
⇒ x = 4.83m
Hence, the extension of spring is 4.83m.
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Derive an Expression for elastic potential energy of a spring
Answer:
spring force = -K × x , where X is elongation or compression in the spring. ( -) sigh shows that the spring force is opposite to the applied force to cause extension.
Potential energy = work done by spring force = integration of Force.
integrate the force (-K × x) over distance 0 to x .
U = 1/2 K × X^2 ( for elongation)
U = -1/2 × K × X^2 ( for compression)
A mass m is attached to an ideal massless spring with spring constant k. In experiment 1 the mass oscillates with amplitude a, and period t. A student grabs the mass and brings it to rest before starting experiment 2. In experiment 2, the mass is set to oscillate with a larger amplitude of 3a. What is the period of the oscillation in experiment 2?.
The experiment's time period is unaffected by the change in amplitude in either experiment.
What are the variables that affect time in SHM?Time period is provided by:
[tex]T= 2\pi \sqrt{\frac{m}{k} }[/tex]
where,
T = time period
m = mass
k = spring constant
According to the formula, the only factors affecting the time period in a simple harmonic motion (SHM) are the object's mass and the spring constant . The time period will adjust in line with any adjustments made to the object's mass or spring constant.
What are some instances of simple harmonic motion?Pendulum oscillations are an illustration of simple harmonic motion. Take into consideration a spring that has a fixed end. It is in its equilibrium position if no force is applied to it. Now, if we pull it outwards, the string exerts a force that is pointed in the direction of the equilibrium position.
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Approximately what is the smallest detail observable with a microscope that uses ultraviolet light of frequency 1. 72 x 1015 hz? provide the solution: __________ x 10-7 m
The wavelength, which represents the size of the smallest detectable detail that uses ultraviolet light , is calculated as follows: 3×[tex]10^{8}[/tex] / 1.72×[tex]10^{15}[/tex] or approximately 1.74×[tex]10^{-7}[/tex]m.
The distance between the two positive, two negative, or two minimal points on the waveform is known as the wavelength of the wave. The following formula expresses the relationship between the frequency and wavelength of light:
f = c / λ
where, f = frequency of light
c = speed of light
λ = wavelength of light
Given data = f = 1.72×[tex]10^{15}[/tex]Hz
Therefore, λ = 3×[tex]10^{8}[/tex] / 1.72×[tex]10^{15}[/tex]
λ = 1.74×[tex]10^{-7}[/tex]m
The wavelength, which represents the size of the smallest detectable detail that uses ultraviolet light , is calculated as follows: 3×[tex]10^{8}[/tex] / 1.72×[tex]10^{15}[/tex] or approximately 1.74×[tex]10^{-7}[/tex]m.
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Water (3090 g ) is heated until it just begins to boil. if the water absorbs 5.09×105 j of heat in the process, what was the initial temperature of the water?
The initial temperature of the water was 60.64 degree Celsius.
What is heat energy?Heat is the type of energy that travels from a high-temperature system to a low-temperature system when it is transmitted between things or systems of different temperatures. also known as thermal energy or heat energy. Usually, heat is expressed in Btu, calories, or joules.
Calculation for the initial temperature of the water;
The formula for release of heat energy is given by;
Q = mc∆t
Q = heat energy
m = mass
c = specific heat (of water)
∆t= change in temperature (= final - initial temp)
final temp of water = boiling point of water i.e. 100*C
'c' for water = 4.186 joule/gram °C
The mass 'm' = 3090 g.
The energy absorbed by water is 5.09×[tex]10^{5}[/tex] = 509000 J.
Let 'T' be the initial temperature.
Substitute all the value in formula to get the equation.
509000 = 3090 × 4.186 × (100 - T)
100 - T = 39.35
T = 100 - 39.35
T = 60.64
Therefore, the initial temperature of the water was 60.64 degree Celsius.
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why is black the good absorber of radiation?
Answer:
=> Black colour do not reflect the wavelength of light and is a good emitter of heat . This, black is a good absorber of radiation.
Answer:
Black coloured objects absorb all the wavelengths of light and do not reflect any of them. Therefore, it looks black in colour and is considered to be a good absorber and a good emitter of heat. On the other hand, white coloured objects reflect all the light that falls into it and therefore they look white
A tank with a flat bottom is filled with water to a height of 7.5 meters. What's the pressure at any point at the bottom of the tank? (Ignore atmospheric pressure in your calculations.)
_______________
h=7,5 m
g=10 m/s²
ρ=1000 kg/m³
_______________
p - ?
_______________
p=ρgh=1000 kg/m³ · 10 m/s² · 7,5 m = 75000 Pa = 75 kPa
Please help!!! Which is a heterogeneous mixture?
Answer:
pizza is a heterogeneous mixture.
Explanation:
A heterogeneous mixture is a mixture in which the composition is not uniform throughout the mixture. Vegetable soup is a heterogeneous mixture. Any given spoonful of soup will contain varying amounts of the different vegetables and other components of the soup
If a wave has a wavelength of 4.5 meters and a period of 0.007 second, what’s the velocity of the wave? be sure to show the steps of your work.
Answer:
v = λ f wavelength * frequency
v = λ / P
v = 4.5 n / .007 sec = 643 m/s
When the magnetic flux through a loop changes, which is always true about the induced current?
The magnetic flux linked with the conductor will always changes is true for the induced current, if it produces a magnetic field that opposes the change in the existing magnetic field.
To find the answer, we have to know more about the Electromagnetic induction.
What is Faraday's law of Electromagnetic induction?According to Faraday's law of EMI, an electromotive force is always created when a conductor is exposed to a fluctuating magnetic field.Induced current is the term used to describe the current that results from a closed conductor circuit.The rate of change of the flux linkage determines the amount of induced emf in a coil. The polarity of the induced emf is such that, according to Lenz's law, it tends to produce a current that opposes the change in magnetic flux that caused it.Thus, we can conclude that, the magnetic flux linked with the conductor will always changes is true for the induced current, if it produces a magnetic field that opposes the change in the existing magnetic field.
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A circuit has an impedance of 5 ohms and a voltage of 100 volts. What is the current flow?
A circuit with an impedance of 5 ohms and a voltage of 100 volts has a current flow of 20 A.
The expression of an electronic component, circuit, or system's resistance to alternating and/or direct electric current is called impedance, indicated by the letter Z. Resistance and reactance are two distinct scalar (one-dimensional) phenomena that combine to form impedance, a vector (two-dimensional) variable.
[tex]Z^{}[/tex] = [tex]\frac{V}{I}[/tex]
(for a pure resistor where Z=R,preserving the form of the DC Ohm's law).
[tex]I=\frac{V}{Z}[/tex]
[tex]I = \frac{100}{5}[/tex]
I = 20 A
Therefore, A circuit with an impedance of 5 ohms and a voltage of 100 volts has a current flow of 20 A.
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______ enables digital computers to communicate across different media, including telephone wires, cable lines, and radio waves.
Modem enables digital computers to communicate across different media, including telephone wires, cable lines, and radio waves.
A modulator-demodulator or modem is a computer hardware device that converts data from a digital format into a format suitable for an analog transmission medium such as telephone or radio. Modems converts or modulates the analog signals coming from telephone wire into digital form for example in form of 0 s and 1 s.
To transmit digital data, the sending modem must first modulate, or encode, a computer's digital signal into an analog signal that can travel over the phone line. The receiving modem must then demodulate, or decode, the analog signal back into a digital signal recognizable to a computer.
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Why can rock avalanches move downslope at speeds exceeding 200 km/hr (125 mi/hr)?
Rock avalanches move downslope at speeds exceeding 200 km/hr (125 mi/hr) because when the soil expands and compresses, it lifts certain particles and drops them downslope a short distance.
Landslides are the common name for soil or rock avalanches. The most frequent type of avalanche, snowslides, can travel downhill more quickly than a skier. When an unstable snow mass detaches from a slope, a snow avalanche starts.
Rock avalanches are caused by the rapid breakup of initially intact, highly fast-moving rock masses during transportation. In mountainous areas, rock avalanches, which are unexpected rock slope failures marked by high velocities, lengthy runouts, and massive volumes, are among the most deadly and costly geological hazards.
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If the ambulance siren was emitting a crest at time = 0, what is the siren doing at time = 0. 02 s? is it emitting a crest or trough, or is it somewhere else in the cycle? how do you know?
while the siren produces waves of constant frequency, as it approaches us the observed frequency increases and our ear hears a higher pitch. After it has passed us and is moving away, the observed frequency and pitch drop this effect is known as Doppler effect.
The characteristic sound of a motorcycle buzzing by is an example of the Doppler effect. Specifically, if you are standing on a street corner and observe an ambulance with a siren sounding passing at a constant speed, you notice two characteristic changes in the sound of the siren. First, the sound increases in loudness as the ambulance approaches and decreases in loudness as it moves away, which is expected. But in addition, the high-pitched siren shifts dramatically to a lower-pitched sound.
what is Doppler effect?
The Doppler effect is an alteration in the observed frequency of a sound due to motion of either the source or the observer. Although less familiar, this effect is easily noticed for a stationary source and moving observer.
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Write 3 – 4 sentences to describe the kinetic and potential energy of a particle and how the two terms are related.
Potential energy is position relative, and kinetic energy is motion relative. The primary relationship between the two is their ability to transform into each other. In other words, potential energy transforms into kinetic energy, and kinetic energy converts into potential energy, and then back again.
Potential energy defined as :
The energy stored in a body due to either its position or change in shape is known as potential energy. Water stored in a reservoir is an example of potential energy.
PE=mgh
where,
PE is the potential energy
m is the mass of the body
g is the acceleration due to gravity
h is the height above the surface of the earth
Kinetic energy is defined as :
Kinetic energy is the energy of motion, observable as the movement of an object, particle, or set of particles. Any object in motion is using kinetic energy: a person walking, a thrown baseball, a crumb falling from a table, and a charged particle in an electric field are all examples of kinetic energy at work.
Kinetic Energy Formula:
For the Kinetic formula, Ek, is certainly the energy of a mass, m, motion, of course, is v2.
KE = [tex]\frac{1}{2} mv^{2}[/tex]
KE = Kinetic energy
m = mass of the body
v = velocity of the body
What are the similarities between potential energy and kinetic energy?
One of the most important similarities between potential energy and kinetic energy is that they can both be converted into each other's form of energy. When a force is applied to potential energy it converts to kinetic energy. This means that when an object such as a ball is still it has the potential to move.
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28. Water on the road can cause a vehicle to hydroplane. Your car may hydroplane at speeds as low as:
Your car may hydroplane at speed as low as 56 Kilometer per hour
What can cause a car to Hydroplane ?Hydroplaning occurs mostly during the raining period. When the tire of the car continue to loose grip and start skidding on the road surface.
It is true that water on the road can cause a vehicle to hydroplane. And your car may hydroplane at speeds as low as 35 mile per hour or approximately 56 kilometer per hour.
The three main factors of the car hydroplaning are;
Water depth which can determine how quicker a car can lose traction.Increase in speed of the vehicle. Increase in speed causes wet traction to reduce.Tire tread depth. Worn out tires could have less ability to resist hydroplaning.Therefore, your car may hydroplane at speeds as low as 56 Kilometer per hour approximately.
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In a region where the electric field is uniform and points in the x direction, the electric potential is -2000 v at x = 8 m and is 400 v at x = 2 m. what is the magnitude of the electric field?
The magnitude of the uniform electric field, if the electric potential is -2000 v at x = 8m and is 400 v at x = 2 m in x direction will be, 400V/m.
To find the answer, we have to know more about the electric field.
How to find the magnitude of uniform electric field?a space where other charged particles or things would be forced to move away from a charged particle or item is called the electric field.The expression for electric field in terms of potential V and the distance x can be written as,[tex]E=\frac{dV}{dx}[/tex]
where, dV is the potential difference at two different points of the conductor and dx is the difference of the points.
Thus, the magnitude of electric field can be written as,[tex]|E|=|-(\frac{dV}{dx} )|=|-(\frac{-2000-400}{8-2} )|\\\\|E|=400V/m[/tex]
Thus, we can conclude that, the magnitude of the uniform electric field, if the electric potential is -2000 v at x = 8m and is 400 v at x = 2 m in x direction will be, 400V/m.
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Why doesn’t the total pressure increase when more gas is added to the chamber? (hint: what would you see if the volume of the chamber was fixed?)
Answer:
It won't increase according to Boyle's law
Explanation:
Volume of a gas varies inversely as the pressure so as more fixed volume of gas is added to the chamber the pressure reduces
is position a base or derived quantity?
Position is measured in meters (m), so it is a base quantity.
What is base quantity?A base or fundamental quantity is a physical quantity, in which other quantities are derived from.
Example of fundamental quantities;
MassLength (position)TimeTemperatureAmount of substanceWhat is a derived quantity?Derived quantities are those quantities obtained or expressed from fundamental quantities.
Example of derived quantities;
SpeedAccelerationVolumeAreaDensity, etcThus, we can conclude that position measured in meters (m) is a base quantity.
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What constant acceleration is required to increase the speed of a car from 27 mi/h to 53 mi/h in 3 s? (round your answer to two decimal places. ) ft/s2
The constant acceleration is required to increase the speed of a car from 27 mi/h to 53 mi/h in 3 s will be 0.01 ft /[tex]s^{2}[/tex]
Velocity defines the direction of the movement of the body or the object. Speed is primarily a scalar quantity. Velocity is essentially a vector quantity. It is the rate of change of distance. It is the rate of change of displacement.
Acceleration, rate at which velocity changes with time, in terms of both speed and direction. A point or an object moving in a straight line is accelerated if it speeds up or slows down.
initial velocity = 27 m/h = 0.0075 m/s
final velocity = 53 m/h = 0.0147 m/s
acceleration = ( final velocity - initial velocity ) / time
= (0.0147 - 0.0075) / 3
= 0.0024 m/[tex]s^{2}[/tex]
= 0.01 ft /[tex]s^{2}[/tex]
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A 1500-w heater is connected to a 120-v line for 2. 0 hours. how much heat energy is produced?
Answer:
10800 kJ
Explanation:
1 watt = 1 Joule /sec
1500 w = 1500 j/sec 2 hours = 7200 sec
1500 j/sec * 7200 sec = 10 800 000 j = 10 800 kJ
if a fishing pole is 1.5m long, how long is the fishing pole in km?
The fishing pole is 0.0015km
If he were able to maintain this constant rate of acceleration, what would have been his speed as he finished the race?
a) 4.8 m/s² his average acceleration during the first 2.5 s
b) 15 m distance he cover during the first 2.5 seconds.
c) 31 m/s his speed as he finished the race.
(a) How to calculate the Average Acceleration ?Average acceleration is calculated by using Newtons first law of motion
v = u + at
where
u is initial velocity
v is final velocity
a is constant acceleration
t is time
Given u = 0m/s , v = 12 m/s and t = 2.5 sec
Therefore average acceleration is given by
[tex]a=\frac{v}{t}[/tex]
[tex]a=\frac{12}{2.5}[/tex]
a = 4.8 m/sec²
b) Here we will use newtons second law of motion
[tex]s=ut+\frac{1}{2}at^{2}[/tex]
On substituting value we get
s = 15m
c) Here we will use newtons third law of motion
v² = u² + 2as
Here u = 0 , a = 4.8 m/s² and s = 100 m
Therefore
v² = 960
v = 31 m/s
Disclaimer: the question was given incomplete in the portal. Here is the complete question.
Question: Usain Bolt's 100m sprint Runner set the world record for the100 meter sprint during the 2009World Championships in Berlin with a time of 9.58 s, reaching a top speed of 12 m/s in about 2.5 s.
a. What was his average acceleration during the first 2.5 s?
b. What distance did he cover during the first 2.5 seconds, assuming his acceleration was constant?
c. If he were able to maintain this constant rate of acceleration, what would have been his speed as he finished the race?
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. Barium has a work function of 2.48eV. What is the maximum kinetic energy if the metal is illuminated by UV light of wavelength 365nm?
The maximum kinetic energy is 0.91 eV
What is Work Function of a Metal ?A Work Function of a Metal is the minimum energy required to liberate an electron from a metal surface. From the formula;
hF = hf + E
hF = energy for liberation or illuminationhf = work function = 2.8 eVE = kinetic energyGiven that a Barium has a work function of 2.48eV. What is the maximum kinetic energy ?
Convert eV to Joule by multiplying by 1.6 x [tex]10^{-19}[/tex]
hf = 2.48 x 1.6 x [tex]10^{-19}[/tex]
hf = 3.968 x [tex]10^{-19}[/tex] J
If the metal is illuminated by UV light of wavelength 365nm,
E = hF = hc/λ
Where
C = speed of light = 3 x [tex]10^{8}[/tex] m/sh = Planck constant = 6.6 x [tex]10^{-34}[/tex] Jsλ = wavelength = 365 x [tex]10^{-9}[/tex] mSubstitute all the parameters
hF = (6.6 x [tex]10^{-34}[/tex] x 3 x [tex]10^{8}[/tex]) / 365 x [tex]10^{-9}[/tex]
hF = 1.98 x [tex]10^{-25}[/tex] / 365 x [tex]10^{-9}[/tex]
hF = 5.42 x [tex]10^{-19}[/tex] Joule
The maximum kinetic energy will be
hF = hf + E
Make E the subject of formula
E = hF - hf
E = 5.42 x [tex]10^{-19}[/tex] - 3.968 x [tex]10^{-19}[/tex]
E = 1.452 x [tex]10^{-19}[/tex] J
Convert Joule back to eV by dividing by 1.6 x [tex]10^{-19}[/tex]
E = 1.452 x [tex]10^{-19}[/tex] / 1.6 x [tex]10^{-19}[/tex]
E = 0.9075 eV
Therefore, the maximum kinetic energy is 0.91 eV approximately
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An electron moving at in a 1. 25-t magnetic field experiences a magnetic force of. what angle does the velocity of the electron make with the magnetic field? there are two answers
The angle the velocity of the electron make with the magnetic field is sin(∅) = 90° answer.
The equation F = qv X B may be damaged down into two elements, the significance and the path. The importance is given by F = qv B sin(∅),
Magnetic field = 1. 25-tesla
F = qv B sin(∅)
= sin(∅) = F/qv B
sin(∅) = qv X B/qv B
sin(∅) = 90° answer.
The most importance of the magnetic pressure appearing at the electron whilst its velocity v is perpendicular to B i.e magnetic discipline. The route of the force acting on the electron is the course the palm of the left hand faces. The path of the magnetic area, the direction of the transferring rate, and the route of the pressure on the particle are all perpendicular to each other.
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What counteracts the relaxation pressures and promotoes the steady lund pressure?
Breathing exercises , Self - hypnosis , Enough sleep and meditation practice can counteracts the relaxation pressures and promotes the steady blood pressure
Their are several techniques which counteracts the relaxation pressures and promotes the steady blood pressure , that are
1) Breathing exercises
For this , one can focus on taking slow, deep breaths which is also called diaphragmatic breathing
2) Self - hypnosis
In this , one can learn to produce the relaxation response when prompted by a phrase
3) Enough sleep and meditation practice
The less you sleep, the higher your blood pressure may go. People who sleep six hours or less may have steeper increases in blood pressure.
The relaxation response (from meditation) helps decrease metabolism, lowers blood pressure, and improves heart rate, breathing, and brain waves," Benson says. Tension and tightness seep from muscles as the body receives a quiet message to relax.
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The air pressure normally ____ before a cold front passes and ____ after a cold front passes.
The air pressure normally drops before a cold front passes and rises after a cold front passes.
What is cold front?When a warm, lighter air mass pushes under a cold, dense air mass, the warm air is forced to rise, forming a cold front. The warm air at the surface is replaced by the cold air as it moves forward. As the moisture in the warm air mass rises, cools, and condenses, rain and even thunderstorms might develop. The winds will often change direction during a cold frontal passage from the south to the west or north. It is probable that cold, fair weather will continue when the front passes.
The sort of air mass going in affects the temperature behind a cold front. During the winter, a polar air mass will bring in frigid air, and during other seasons, cool air. Bitter air from the Arctic will be present.
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A mass m is attached to an ideal massless spring with spring constant k. In experiment 1 the mass oscillates with amplitude a, and period t. A student grabs the mass and brings it to rest before starting experiment 2. In experiment 2, the mass is set to oscillate with a larger amplitude of 3a. What is the period of the oscillation in experiment 2?.
The experiment's time period is unaffected by the change in amplitude in either experiment.
What are the variables that affect time in SHM?The time frame is provided by:
[tex]$T=2 \pi \sqrt{\frac{m}{k}}$[/tex]
where,
T = Time period.
M = mass.
k = spring constant.
We can see from the formula above that the only factors affecting the time period in a Simple Harmonic Motion (SHM) are the object's mass and spring constant. Any changes in the object's mass or the spring constant will cause the time period to adapt.
Describe the Spring Constant.The attribute is known as a spring's "spring constant" describes the relationship between the force acting on a spring and the displacement it causes. In other terms, it describes the stiffness and size of a spring's range of motion.
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