In a vacuum all colors of light travel with same speed and this is the reason a white ray travels through the vacuum without going through any dispersion..
What is speed?Speed of light is the distance per time light waves propagate through different materials. The value for the speed of light in a vacuum is now defined as exactly 299,792,458 metres per second.
Therefore, In a vacuum all colors of light travel with same speed and this is the reason a white ray travels through the vacuum without going through any dispersion
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Melissa's hair stands up on end after she takes her wool hat off in the winter but not in the summer
Answer:
Static electricity
Explanation:
A static reaction is transpiring with the surrounding air as well as her hair.
Which level instruments operate on the principle of generating a signal and then measuring the time required for the signal to reflect off the process fluid back to the transmitter
One of the most crucial devices for electronics and communication is the signal generator. For several reasons, including testing, debugging, and designing, it is utilized to produce various types of signals and frequencies.
What instruments operate principle of generating a signal?Engineers create electronic signals using signal generators, which can be analogue or digital, to test circuit designs. Signal generators come in a wide variety of forms with various characteristics and uses. The most typical signal generator kinds and their distinctive qualities are listed below.
Therefore, radar level instruments operate on the principle of generating a signal and then measuring the time required for the signal to reflect off the process fluid back to the transmitter.
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Particle q1 has a charge of 2.7 μc and a velocity of 773 m/s. if it experiences a magnetic force of 5.75 × 10–3 n, what is the strength of the magnetic field? t in the same magnetic field, particle q2 has a charge of 42.0 μc and a velocity of 1.21 × 103 m/s. what is the magnitude of the magnetic force exerted on particle 2? n
1)The strength of the magnetic field for particle 1 will be 2.8 T.
2)The magnitude of the magnetic force exerted on the particle will be 0.12 N.
What is a magnetic field?It is the type of field where the magnetic force is obtained. With the help of a magnetic field. The magnetic force is obtained it is the field felt around a moving electric charge.
The given data in the problem is;
q₁ has a charge = 2.7 μc
v₁ is the velocity of particle 1 = 1 773 m/s.
F is magnetic force = 5.75 × 10–3 n,
q₂ has a charge of 42.0 μc
v₂ is the velocity of 1.21 × 103 m/s.
[tex]\rm F_{B2}[/tex] is the magnitude of the magnetic force exerted on particle 2=?
The megnetic force for case 1 is found as;
[tex]\rm F_{B1}= qvB SIN \alpha_1 \\\\ 5.75 \times 10^{-3} =2.7 \times 10^{-6}\times 773 \times B sin 90^0 \\\\ B=\frac{5.75 \times 10^{-3}}{2.7 \times 10^{-6} \timesd 773 \times sin 90^0} \\\\ B=2.8 \ T[/tex]
The megnetic force for case 2 is found as;
[tex]\rm F_{B2} = q_2v_2bsin \alpha_2 \\\\ 42\times 10^{-6} \times 1.21 \times 10^3 \times 2.8 \times sin 55^0 \\\\ F_{B2}=0.12 T[/tex]
Hence the value of the megnetic force exerted on particle 2 will be 0.00122 T.
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Answer:
last one and second one
Explanation:
Particle q1 has a charge of 2.7 μC and a velocity of 773 m/s. If it experiences a magnetic force of 5.75 × 10–3 N, what is the strength of the magnetic field?
2.8
T
In the same magnetic field, particle q2 has a charge of 42.0 μC and a velocity of 1.21 × 103 m/s. What is the magnitude of the magnetic force exerted on particle 2?
0.12
N
A book on a shelf 2.5 m above the floor has a mass of 1.7 kg. What is the gravitational potential energy of the book?
Answer:
42.5J (If g = 10)
41.6925J (If g = 9.81)
41.67975J (If g = 9.807)
Explanation:
Gravitational Potential Energy = Mass X Height X Gravitaitonal Field
Earth's Gravity is = 9.807 m/s^2
It is often rounded to 9.81 or 10
Help its due in 2 hours
Physics Word Problem
An archer shoots an arrow at a 75 m distant target; the bull’s-eye of the target is at same height as the release height of the arrow. If d = 75 m and v = 37 m/s. At what angle must the arrow be released to hit the bull’s-eye if its initial speed is 37m/s?
Answer:
15.6 degrees
Explanation:
What is the thoery of Newton?
Answer:
apple fall on his head, then he discovers gravity. Law of motion
Explanation:
Answer:
gravity is the theory of Newton.
Explanation:
The reason for this is because one day he was sitting under the apple tree and an apple fell on top of his head. So he wanted to figure out what had caused the apple to fall on his head.
Does the electric potential energy increase, decrease, or stay the same? explain.
Answer:
Yes. To maintain constant total energy, when released from rest the charge loses potential energy as it gains kinetic energy in its "fall" toward the negative plate.
Explanation:
Answer:
Yes. Left. To maintain constant total energy, when released from rest the charge loses potential energy as it gains kinetic energy in its "fall" toward the negative plate.
2. Describe the new digital governance and sourcing approach since accelerate implementation. Include both project management and portfolio management decision-making and accountability
The prompt seeks to explain how Philips uses digital governance in its sourcing approach or procurement.
How did Philips use a New Digital Governance and Sourcing approach?
Phillips was able to achieve this by hosting the "Supplier Development Group".
Then, various departments within Phillips met with the supplier's Group to find out how more raw materials could be gotten in the most environmentally friendly way possible.
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The new digital governance and sourcing approach is described as strategy to accelerate implementation.
What is New Digital Governance?Digital tools along with social media have empowered people to have access to infinite information and make connections globally. All the citizens or individuals are using digital based technologies to get hold of benefits caused by using them.
Sourcing approach is used in supply chain management that gathers the information and used in an organization for purchasing power. This finds the best possible values in the marketplace. This strategy helps to attain business goals.
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What is the mass of an object if it takes a net force of 2,400 Newtons
to accelerate it at a rate of 60 m/s??
Answer:
40 kg
Explanation:
F = ma
F / a = m
2400 / 60 = 40 kg
Helppppp
5) Experimental Design Cavendish's homemade apparatus gave him a calculated
value for the Gravitational Constant of 6.74E-11 Nm²/kg? The accepted value today
(with 200 years more advanced technology) is 6.67E-11 Nm²/kg? What sources of
error might Cavendish have had? How might scientists have improved this
experiment over the years.
Answer:
The apparatus would need to be extremely delicate because of the very small values being measured, the gravitational attraction of two massive objects.
(I) the torsion constant, measuring the deflection of massive objects would be very small and difficult to measure accurately
(II) since all surrounding objects are massive, it is difficult to remove the effect of such objects from forces being measured
(III) to consider a massive object as having all of its mass at its center, the massive object would need to be uniform throughout - any nonuniformity of the object would affect the calculations
(IV) all physical measurements would need to be made with utmost accuracy because of the relatively small distances involved with regard to the extremely small force being measured
(V) today laser measurements would assist in measuring small deflections accurately
18. Students are discussing the magnitude of the electrostatic force that sphere B exerts on sphere A.
Eva states that sphere B exerts a larger electrostatic force on sphere A than sphere A does on sphere B.
. Taylor states that sphere B exerts the same electrostatic force on sphere A as sphere A does on sphere B.
• Jac states that sphere B exerts a smaller electrostatic force on sphere A than sphere A does on sphere B.
Which student is correct? Give scientific reasoning to support your decision.
she is k bads boy (into negative)
A 1. 5-kω resistor and 27. 7-mh inductor are connected in series to a vrms = 120 v ac power source oscillating at a frequency of f = 60 hz. The voltage as a function of time is given by
The voltage as a function of time for the power source oscillating at the given frequency is determined as V = 169.7sin(120πt).
Peak voltageThe peak voltage of the source is calculated as follows;
Vrms = 0.7071V₀
120 = 0.7071V₀
V₀ = 120/0.7071
V₀ = 169.7 V
Angular frequency of the waveω = 2πf
where;
f is frequency = 60 Hz
ω = 2π x 60
ω = 120π rad/s
Voltage equation as function of timeV = V₀sin(ωt)
V = 169.7sin(120πt)
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The voltage equation is a function of a time is V = 169.7sin(120πt) if the 1. 5-kω resistor and 27. 7-mh inductors are connected in series to a vrms = 120 v ac power source oscillating at a frequency of f = 60 Hz.
What is induced voltage?Electromagnetic induction causes the induced voltage. Electromagnetic induction is the process of creating emf (induced voltage) by exposing a conductor to a magnetic field.
We have:
[tex]\rm V{rms} = 120[/tex]
We know:
[tex]\rm V_{rms} = 0.7071V_o[/tex]
[tex]\rm 120 = 0.7071V_o[/tex]
[tex]\rm V_o = 169.70[/tex] Volts
Expression for the angular frequency is given by:
ω = 2πf
Where f is frequency
ω = 2π x 60
ω = 120π rad/s
Voltage equation as a function of time is given by:
V = V₀sin(ωt)
V = 169.7sin(120πt)
Thus, the voltage equation is a function of a time is V = 169.7sin(120πt) if the 1. 5-kω resistor and 27. 7-mh inductors are connected in series to a vrms = 120 v ac power source oscillating at a frequency of f = 60 Hz.
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From the top of a tall cliff of height y, a soccer ball is kicked horizontally so that it leaves the cliff with a velocity v. Assuming air friction is negligible, the speed of the ball just before it hits the ground is:
Answer:
[tex]\sqrt{v^{2} + 2\, g\, y}[/tex].
Explanation:
Apply the SUVAT equation [tex]{v_{1}}^{2} - {v_{0}}^{2} = 2\, a\, x[/tex] to the vertical component of the soccer ball's motion to find the vertical velocity right before the ball lands. In this equation:
[tex]v_{1}[/tex] represents the vertical velocity of the ball right before it lands (needs to be found);[tex]v_{0}[/tex] represents the initial vertical velocity of the soccer ball ([tex]0[/tex] in this question since the ball was initially travelling horizontally); [tex]a[/tex] represents the acceleration (equal to [tex]g[/tex] since air friction is negligible);[tex]x[/tex] represents the vertical displacement of this ball (in this question, this vertical displacement is equal [tex]y[/tex], the height of the cliff.)Rearrange this equation to find an expression for the vertical velocity [tex]v_{1}[/tex] in terms of [tex]y[/tex] and [tex]g[/tex]:
[tex]\begin{aligned}v_{1} &= \sqrt{{v_{0}}^{2} + 2\, a\, x} \\ &= \sqrt{2\, g\, y}\end{aligned}[/tex].
Since air friction is negligible, the horizontal velocity of the ball would stay unchanged. Thus, the horizontal velocity of the ball would still be [tex]v[/tex] right before the ball lands.
Notice that these two components of velocity are perpendicular to one another. Thus, find the combined velocity of the ball right before landing could be found using Pythagorean's Theorem:
[tex]\sqrt{v^{2} + {v_{1}}^{2}} = \sqrt{v^{2} + 2\, g\, y}[/tex].
Rectangular plate has a voltage of +180V and plate to the first plate) has a 'voltage of -5V. Determie another rectangular plate (parallel to between these two plates? The distance of the field strength at any point separation of the plates is finite, say 8.6mm.
For a Rectangular plate has a voltage of +180V and a 'voltage of -5V. , the second plate has the Electric field mathematically given as
E=21.5*10^3v/m
What is the field strength?Generally, the equation for the Electric field is mathematically given as
E=v/d
Where
v={180-(-5)}v
v=185v
Therefore
E=185/8.6*10^{-3}
E=21.5*10^3v/m
In conclusion, Electric field
E=21.5*10^3v/m
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Give two examples that provide evidence for the presence of terrestrial magnetism?
Explanation:
When a magnetic body is buried inside the earth in North-South direction, it gets magnetized due to the effect of terrestrial magnetism. A freely suspended magnet faces North-South direction.
what is electric charge?
Answer:
Electric Charge is the property associated with matter due to which it produces and experiences electric and magnetic effect
What current is required in the windings of a long solenoid that has 1580 turns uniformly distributed over a length of 0.44 m in order to produce a magnetic field of magnitude 0.000394 T at the center of the solenoid
The current required in the windings of the given long solenoid that has 1580 turns uniformly distributed over the length of the solenoid is 1.98 A.
Magnetic field at the center of a solenoidThe magnetic field at the center of a solenoid is given by the following formula,
B = μ₀nI
where;
μ₀ is permeability of free space n is number of turnsI is current in the solenoidCurrent in the solenoidI = B/μ₀n
I = (0.00394) / (4π x 10⁻⁷ x 1580)
I = 1.98 A
Thus, the current required in the windings of the given long solenoid is 1.98 A.
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What do we call objects that form like a star (from a contracting gas cloud), but do not have enough mass to ignite hydrogen fusion in their centers
A brown dwarf is a starlike body that do do not have enough mass to ignite hydrogen fusion in their centers.
What is a brown dwarf?Brown dwarf refer to a body of substellar that is not huge or big enough to undergo nuclear fusion of o hydrogen into helium in their cores. This formed when there is contraction of gases in the intercellar spaces. The have a mass between 13 to 80 times that of Jupiter.
Therefore, brown dwarf is a starlike body that do don't not have enough mass to ignite hydrogen fusion in their centers.
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what happens when you put foil in the microwave?
Answer:
The foil makes the microwave spark it can smoke up and catch fie.
Explanation:
-The aluminum foil's sharp edges are what causes the fire, smoke, and sarks.
- Hope This Helps!
-Justin:)
Answer:
itll spark and catch fire
Explanation:
i need help with this question on circuits!!
Answer:
B
A
A
B
Explanation:
In the wiring of houses, a parallel circuit is used, otherwise, if the circuit of one of the parts is interrupted, the current will not enter the other circuits.
Non-Contact Forces Unit Test
Why is glass a good insulator? (1 point)
O The atoms in glass hold on tightly to their positively charged particles.
O The atoms in glass do not hold on tightly to their positivelycharged particles.
The atoms in glass do not hold on
Glass is known to be a good insulator because atoms in glass hold on tightly to their positively charged particles.
What is an insulator?Insulators are those substances that do not conduct heat or electricity like their conductor counterparts.
Conduction of electric charges is as a result of the free flow of electrons in the atom of the substance.
Hence, a good insulator holds on tightly to its electrons and prevent them from flowing freely to conduct electric charges.
Therefore, Glass is known to be a good insulator because atoms in glass hold on tightly to their positively charged particles.
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It's the first answer, The atoms in glass hold on tightly to their positively charged particles.
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An object of mass 5kg falls from rest and has a kinetic energy of 1500J midway its journey.
a) what is its potential energy at this point?
b) what is the potential energy it started with?
c) what is it’s kinetic energy before hitting the ground?
Answer:
a) 1500 j
b) 3000 j
c) 34.64 m/s
Explanation:
at halfway point 1/2 of the potential energy has been converted to kinetic energy
so 1 /2 P E = 1500 j
it will still have the OTHER half of its PE 1500 j
c) PE will be entirely converted to KE when it is at the bottom
KE = 1/2 m v^2
3000 = 1/2 (5)(v^2) show v = 34.64 m/s
A block initially at rest on a horizontal, frictionless surface is accelerated by a constant horizontal force of 5. 0 newtons. If 15 joules of work is done on the block by this force while accelerating it, the kinetic energy of the block increases by.
By the work-energy theorem, the block's kinetic energy is increased by 15 J. The only force performing work on the block is the constant 5.0-N push.
FOR STUDY ISLAND: Objects that stop the flow of electricity are good insulators. Which of the following materials would be the best insulator for an electrical wire?
A.
aluminum pipes
B.
copper wire
C.
plastic tubing
D.
water
Answer: It would be; A/B
An object moving in the xy-plane is subjected to the force f⃗ =(2xyı^ 3yȷ^)n, where x and y are in m
The work done on the object moving in the xy-plane that is subjected to the given applied force is determined as (2ab²i + 3b²j) J.
Magnitude of the force on the objectThe magnitude of the force on the object is calculated as follows;
f = (2xyi + 3yj)
when;
x = a, and y = b
f = (2abi + 3bj)
Work done by the forceThe work done the applied force is the product of force and displacement of the object.
W = fΔs
where;
Δs is displacement of the objectΔx = a - a = 0
Δy = 0 - b = -b
Δs = √(Δx² + Δy²)
Δs = √(-b)²
Δs = b
W = (2abi + 3bj) x b
W = (2ab²i + 3b²j) J
Thus, the work done by the applied force on the object is (2ab²i + 3b²j) J.
The complete question is below;
An object moving in the xy-plane is subjected to the force f = (2xyi + 3yj), where x and y are in m. The particle moves from the origin to the point with coordinates (a, b) by moving first along the x-axis to (a, 0), then parallel to the y-axis. How much work does the force do?
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The work done on an item moving in the xy-plane that is subjected to a particular force is found as (2ab²i + 3b²j) J.
What is work done?Work done is defined as the product of applied force and the distance through which the body is displaced on which the force is applied.
Work may be zero, positive, and negative.it depends on the direction of the body displaced. if the body is displaced in the same direction of the force, it will be positive.
The given data in the problem is;
F is the force applied; f⃗ = (2xyi + 3yj)
Work done is found as the product of force and the body displacement;
[tex]\rm W = F \triangle S[/tex]
As the object is moving in the xy- plane. Displacement in the x direction;
[tex]\rm \triangle x = a-a \\\\ \triangle x =0[/tex]
Displacement in the y direction;
[tex]\rm \triangle y = 0-b \\\\ \rm \triangle y = -b \\\\[/tex]
The net displacement in the xy plane is;
[tex]\rm \triangle s= \sqrt{(\triangle x)^2+(\triangle y)^2 } \\\\\ \rm \triangle s= \sqrt{(0)^2+(-b)^2 } \\\\\ \triangle s= \sqrt{b^2} \\\\ \triangle s=b[/tex]
The work done is found as;
[tex]\rm W= F \triangle S \\\\ W=( 2 ab \vec i+3b \vec j) \triangle S\\\\ W= W=( 2 ab \vec i+3b \vec j) b \\\\\ W=(2ab^2 \vec i + 3b^2 \vec j)\ J[/tex]
Hence, the work done on an item moving in the xy-plane will be,[tex]\rm W=(2ab^2 \vec i + 3b^2 \vec j)\ J[/tex]
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3
A car travels at an average speed of 60 km/h for 15 minutes.
How far does the car travel in 15 minutes?
D
900 km
C 240 km
4.0 km
A
В B 15 km
Answer:
(Option B)The car travels 15km in 15 minutes.
Explanation:
Notice that the speed is written using units of km/h and the time is written using units of minutes.
Convert the time interval to hours. Remember that 1 hour equals 60 minutes:
15 min = 15 min × [tex]\frac{1h}{60~min}=0.25h[/tex]
The distance d that a particle travels during a time t if it moves at an average speed v is given by the formula:
d = v · t
Replace v=60km/h and t=0.25h to find the distance traveled by car:
[tex]d=(60\frac{km}{h}) ~x~(0.25h)=15km[/tex]
Therefore, the car travels 15km in 15 minutes.
Hope this helps!
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At what distance does the electric field produced by a charge of -15 μc have a magnitude equal to 8. 7×104n/c?
Answer:
we'll use the electric field formula. ı wrote the formula in the photo.
Explanation:
The electric field formula is obtained by multiplying force and charge. When you apply this process I mentioned, you will find an electric field. then it is to write the given values and find the result. achievements.
At the distance for which the electric field produced by a charge of -15 μc have a magnitude equal to 8. 7×104n/c is 3.93 meters.
What is electric force?Electric force is the force of attraction of repulsion between two bodies.
According to the Coulombs law, the force of attraction of repulsion between charged two bodies is directly proportional to the product of charges of them and inversely proportional to the square of distance between them.
It can be given as,
[tex]F=k\dfrac{Q}{r^2}[/tex]
Here, (k) is the coulombs constant, (Q) is the charges and (r) is the distance between the two charges.
The charge of -15 μc have a magnitude equal to 8. 7×104n/c. Put this value in the above formula,
[tex]8.7\times10^4=(8.98\times10^{9})\dfrac{15\times10^{-6}}{r^2}\\r=3.93\rm\; m[/tex]
Thus, at the distance for which the electric field produced by a charge of -15 μc have a magnitude equal to 8. 7×104n/c is 3.93 meters.
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I have been made into a body that can fly to every country. even though I am light, I am very strong. mention my name and my property
Answer:
Aeroplane
Explanation:
they have tail surfaces to stabilize the wings
Scientists predict that in another 250 million years, the continents will be located in different positions. How is this possible? *
Answer:
The continents will be in different positions because tectonic plate boundaries are always moving.
Why is it important to regulate temperatures in mammals
Answer:
If the body temperature falls below this temperature then enzymes will work too slowly for body process to occur fast enough the keep the mammal alive.
Explanation: