Answer:
How far from a point charge of +2.4x 10-6C must a test charge be placed to measure a field of 360 N/C? E-AV = 400 V = 2X104 N/C d =( 0.020 m 7.)
Explanation:
I need HELP
What kind of wave is produced, if a rope is moved as shown in the image below?
Group of answer choices
Both longitudinal and transverse
Transverse
Neither longitudinal nor transverse
Longitudinal
Answer:
Transverse
Explanation:
The direction of propagation is perpendicular to the motion of the hand. Therefore the wave undergoes a vertical stretching, which is characteristic of transverse waves. Longitudinal waves stretch horizontally.
ball and bowl system
Answer:
Once the ball is place at the position A and then released, It will accelerate towards the mean position under its weight. At the mean piston it again maximum velocity and momentum so its moves up-to the position B due to inertia. At B it has zero velocity so zero kinetic energy but maximum potential energy.
Again from point B it will move towards O under the restoring Force having maximum velocity at O but does not stop at O due to inertia and will go up to A. In this way the ball will continue to oscillate between the points A and B about the point O, it has simple harmonic motion.
Explanation:
Water is flowing through a pipe with a velocity of 5 m/s. The pipe has a diameter of 6 cm. The pipe then goes up 3 meters and narrows to a diameter of 4 cm. If the gauge pressure in the lower part of the pipe is 80 kPa, what is the gauge pressure in the higher and more narrow part of the pipe
The gauge pressure in the higher part will be 136 kph. The pressure is found with the help of the Bernoulli equation.
What is gauge pressure?The difference between absolute pressure and atmospheric pressure is known as gauge pressure. Relative pressure is another name for gauge pressure.
From the continuity equation;
[tex]\rm A_1v_1=A_2v_2 \\\\ \rm \frac{\pi}{4}(6)^2 \times 5 = \frac{\pi}{4}(3)^2 v_2 \\\\ v_1 = 20 \ m/sec[/tex]
The gauges pressure in the higher part is found as;
From the Bernoullis equation;
[tex]\rm \frac{P_1}{\rho g} + \frac{v_1^2}{2g} +Z_1 = \frac{P_2}{\rho g} + \frac{v_2^2}{2g} +Z_2 \\\\ \frac{80 \times 10^3 }{\rho g} + \frac{(5)^2}{2g} +0= \frac{p_2}{\rho g} + \frac{(20)^2}{2g} +3 \\\\ \frac{80 \times 10^3 - P_2 }{1000 \times 9.81 } = \frac{20^2-5^2}{2 \times 9.81 } +3 \\\\ P_2 = 136 \ kpa[/tex]
Hence the gauge pressure in the higher part will be 136 kpa.
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Immediately after it has started to rain, dust particles and oil residue float on the water and ____________ the traction of tires.
When it rains, dust particles and oil residues float on the water and this reduces the traction of tires.
What is traction?This concept refers to a force between the tires and road that causes the movement of the wheels or vehicle is slower.
What happens with traction when it rains?It is well-known more accidents occur when it rains, which is caused by cars slidding on the road. This is because when it rains traction or the grip of the wheel drastically reduces.
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If a radio wave carries information by changing the amplitude of the transmitted wave, what kind of broadcast might it possibly be?
A) AM radio and analog TV video
B) AM radio only
C) FM radio only
D) FM radio and analog TV sound
Iron has a density of 7.9 g/cm 3. What is the mass of a cube of iron with the length of one side equal to 55.0 mm
Answer:
1314362.5 gm or 1314.3625 kg
Explanation:
A cube has all three dimension =
55 * 55 * 55 = 166375 cm^3
166 375 * 7.9 g/ cm^3 = 1314362.5 gm
A geyser has a rating 2 kVA, 240 V. (a) what is the electrical energy consumed by it in (i) kWh and (ii) joule if it is used for 90 mins. (b) if the cost of electricity is rupees 4.50 per commercial unit find the cost.
See below~
Explanation:
Given, P = 2 kVA = 2 kW,
t = 90 min = 1.5 h
(a) (i) Electrical Energy Consumed = power * time
= 2 kW x 1.5 h
= 3 kWh ( or 3 commercial unit)
(ii) Since 1 kW = 3.6 x 10^6 J
therefore,
Electrical energy consumed = 3 x 3.6 x 10^6 J
= 1.08 x 10^7 J
(b) Cost of electricity
= energy consumed in kWh x cost per kWh
= 3 x Rs 4.50 = Rs. 13.50
Hope it helps you!!When constructive interference happens between two sound waves, the sound will get louder. What does this tell you about the relationship between amplitude and volume of sound?
Answer:
If the amplitude increases the volume increases and vice versa.So therefor the volume depends on how high or low the amplitude is.
When two or more sound waves occupy the same space, they affect one another. The waves do not bounce off of each, but they move through each other. The resulting wave depends on how the waves line up.
With constructive interference, two waves with the same frequency and amplitude line up – the peaks line up with peaks and troughs with troughs as in diagram A above. The result is a wave that has twice the amplitude of the original waves so the sound wave will be twice as loud.
Sodium-24 has a half-life of 15 hours. after 45 hours, how much sodium-24 will remain of an original 50.0-g sample? 5.56 g 6.25 g 16.7 g 25.0 g
Answer:
6.25 gm
Explanation:
1 /2 * 1/2 * 1/2 = 1/8th of the original
50/8 = 6.25 gm
Answer:
its b
Explanation:
trust
A car travels at an average speed of 100km per hour. What distance does it cover in 5hrs
500 km
distance = speed x time
Here given:
speed: 100 km/hourtime: 5 hoursDistance: 100 x 5 ⇒ 500 km
Answer:
500 Km
Explanation:
Speed of the car = 100 km/h
Distance the car covers in 5 hours
= Speed of the car × time
= 100 × 5
= 500 Km
Hope this helps ⚜
9. What voltage is applied to a 20 ohm fixed resistor if the current through the resistor is 1.5 amps?
Question :-
What Voltage is applied to a 20 Ohm fixed Resistor, if the Current through the Resistor is 1.5 Ampere ?Answer :-
Voltage of the Device is 30 Volt's .Explanation :-
As per the provided information in the given question, The Resistance is given as 20 Ohm's . Current is given as 1.5 Amperes . And, we have been asked to calculate the Voltage .
For calculating the Voltage , we will use the Formula :-
[tex] \bigstar \: \: \: \boxed {\sf { \: Voltage \: = \: Current \: \times \: Resistance \: }} [/tex]
Therefore , by Substituting the given values in the above Formula :-
[tex] \Longrightarrow \: \: \: \sf { Voltage \: = \: Current \: \times \: Resistance } [/tex]
[tex] \Longrightarrow \: \: \: \sf { Voltage \: = \: 1.5 \: \times \: 20 } [/tex]
[tex] \Longrightarrow \: \: \: \bf { Voltage \: = \: 30 } [/tex]
Hence :-
Voltage of Device = 30 Volt's .[tex] \underline {\rule {180pt}{4pt}} [/tex]
Additional Information :-
[tex]\Longrightarrow \: \: \: \sf {Voltage \: = \: Current \: \times \: Resistance} [/tex]
[tex] \Longrightarrow \: \: \: \sf {Current \: = \: \dfrac {Voltage}{Resistance}} [/tex]
[tex] \Longrightarrow \: \: \: \sf {Resistance \: = \: \dfrac {Voltage}{Current} } [/tex]
Answer:
30 VoltsExplanation:
Given:
Resistance = 20 ohmCurrent = 1.5 AmperesTo Find:
VoltageSolution:
Using formula:
Voltage = Current × ResistanceBy Substituting the required values,
⇢ Voltage = 1.5 × 20
⇢ Voltage = 30 Volts.
Hence,
The required Voltage is 30 voltsPlace the following types of electromagnetic radiation in order from LOWEST energy
to HIGHEST energy?
(A) visible light (B) gamma rays (C) radio waves
1. А, С, В
2.С, А, В
3.В, С, А
4.С, В, А
Placing the electromagnetic radiation in order from the lowest energy to the highest energy : ( 2 ) C,A,B
Electromagnetic spectrumIn the electromagnetic spectrum the electromagnetic radiation with the shorter wavelength possess a higher energy while the electromagnetic radiation with a longer wavelength possess the lower energy.
The electromagnetic radiation as listed in the question with the longest wavelength is the radio waves therefore it possess the lowest energy while the radiation with the shortest wavelength is the gamma rays therefore it possess the highest energy.
Hence we can conclude that Placing the electromagnetic radiation in order from the lowest energy to the highest energy : ( 2 ) C,A,B
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If the wavelength is 6 meters and the period is 2 seconds, what's the wave velocity?
Calculate the net force on particle qi.
Finally, add the forces together to find the total
force acting on 01.
Be sure to include a + or - sign to indicate the
direction of the force!
EF = [?]N
Fi = -14.4 N
F2 = +2.28 N
=
=
=
+13.0 uc
+ 91
+7.70 μC
+92
-5.90 με
03
0.25 m
0.30 m
Answer:
-12.12
Explanation:
i just added them together and it worked.
What is the difference between tidal volume and vital capacity.
Tidal volume is the amount of air that moves in and out of the lungs, while vital capacity is the maximum amount of air a person can expel.
What is tidal volume?Tidal volume is the amount of air that moves in or out of the lungs with each respiratory cycle.
What is vital capacity?Vital capacity is the maximum amount of air a person can inhale after a maximum exhalation or maximum amount of air a person can expel from the lungs after a maximum inhalation.
Difference between tidal volume and vital capacityTidal volume is the amount of air that moves in and out of the lungs, while vital capacity is the maximum amount of air a person can expel from the lungs after a maximum inhalation.
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What do the lines and numbers on the chromosome represent?
A) Organelles
B) Mutations
C) Genes
D) Proteins
A circular loop (10 turns) with a radius of 29 cm is in a magnetic field that
oscillates uniformly between 0.95 T and 0.45 T with a period of 1.00 s.
a. How much time is required for the field to change from 0.95 T to 0.45 T?
b. What is the cross-sectional area of one turn of the loop?
c. Assuming that the loop is perpendicular to the magnetic field, what is the
induced emf in the loop?
Worked examples on energy
(2) An express train of mass 600kg is
moving with a velocity of 180km per
hour.
Calculate its kinetic energy.
The kinetic energy of the moving express train with the given value of mass and velocity is 7.5 × 10⁵Joules.
What is Kinetic Energy?Kinetic energy is simply a form of energy a particle or object possesses due to its motion.
It is expressed as;
K = (1/2)mv²
Where m is mass of the object and v is its velocity.
Given the data in the question;
Mass of the train m = 600kgVelocity of the train V = 180kmh = 50m/sKinetic energy of the train K = ?To determine the kinetic energy of the train, we substitute our given values into the above expression.
K = (1/2)mv²
K = (1/2) × 600kg × (50m/s)²
K = 0.5 × 600kg × 2500m²/s²
K = 750000kgm²/s²
K = 7.5 × 10⁵J
Therefore, the kinetic energy of the moving express train with the given value of mass and velocity is 7.5 × 10⁵Joules.
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Español:
¿Me podrian ayudar con esta pregunta? <3
Las aplicaciones de la diferencia potencial en la vida cotidiana.
English:
Could you help me with this question? <3
The applications of the potential difference in everyday life.
Las diferencia de potencial indica el valor de la fuerza o potencial eléctrico entre dos puntos, lo cual permite llevar electricidad a diferentes areas.
¿Qué significa diferencia de potencial?La diferencia de potencial indica la fuerza ejercida por una corriente eléctrica entre dos puntos equidistantes.
La diferencia de potencial se mide en Volts, es decir, en voltaje (V), el cual indica la fuerza de la energía eléctrica que se puede transmitir entre dos puntos.
La diferencia de potencial nos permite tener energía en una vivienda o en una industria, como asi tambien usar un artefacto que requiera de electricidad para funcionar.
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an aeroplane flies with a velocity of 100km/h at an angle of 60 to the horizontal. Calculate its effective velocity in the notherly direction and easterly direction
Explanation:
to find the velocity across the positive y direction we multiply 100 by sin60.
to find the velocity across the positive x direction we multiply 100 by cos60.
horizontal: 50 km/h
vertical: 86.6 km/h
make sure to ask if you need any further guidance.
A 100kg man wants to burn off 500 kilocalories by running up ar elliptical. How far will he have to climb?
The distance the 100kg man must climb to burn off 500 kilocalories by running up an elliptical path is 2,136.1 m.
Potential energy of the man
The potential energy of the man from a known height can be used to deternine the distance the man would have to climb.
P.E = mgh
Where;
P.E is potential energy, given as 500 kilocalories,
1 kcal = 4186.8 joules
500 kcal = 2,093,400 J
Distance traveled by the manh = P.E/mg
h = (2,093,400) / (100 x 9.8)
h = 2,136.1 m
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how can I calculate the resistance of a wire 0.70m, radius 3mm and resistivity 2 ×10-6nm
Answer:
The resistance of a cylindrical segment of a conductor is equal to the resistivity of the material times the length divided by the area: R≡VI=ρLA. The unit of resistance is the ohm, Ω.
Explanation:
A boy is swimming , identify the action and reaction
Answer:
a person pushes water with his hands in the backward direction is action and water in turns pushes him forward due to force is reaction.
Explanation:
The following are secondary sources of energy except a.coal b crude oil c nuclear d wind e wood
Answer:
d) Wind
Explanation:
Secondary energy is energy produced by converting energy available in its natural state in the environment. Hence Wind is a primary source not a secondary source
An asteroid falls from the sky and exerts 882 N of force on Earth's ground. How much force does it exert on Mars if the gravity on mar is 3.7m/s??
Answer:
333N
Explanation:
=>First you have to find the mass of the asteroid.
so 882N÷9.8m/s²=90Kg
then,multiply it by Mars's gravity
=>90Kg*3.7m/s²=333N
Blowing up a balloon and letting it go is an example of newton’s.
Answer:
Third Law Of Motion
Explanation:
When we let go of the end, the air rushes out and pushes against the air around the balloon to move it in the opposite direction. Newton describes this effect in his third law.
The blowing up of a balloon and letting it go is an example of newton's third law of motion or action-reaction law.
What is newton's third law?According to Newton's third law, when two bodies come into contact, they exert forces on one another that really are equal in strength and pointed in the opposite direction. The third law is frequently referred to as the law of actions and consequences.
This law applies to bodies in constant or rapid motion and is crucial for understanding problems of static balance, where all forces are in balance. It doesn't only use bookkeeping techniques; the forces it portrays are actual forces. A book laying on a table, for instance, exerts a downwards force equal to its weight on the table. The third law states that the book is subjected to an equal and opposing force from the table.
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Please help I cannot fail!
Why are electron affinity values for the noble gases endothermic?.
Answer:
An electron added to a noble gas must go in the next higher energy level. The periodic trend for electron affinity values is not as consistent as for other trends.
Electric Charge
Directions: Identify each of the following as a conductor or an insulator by putting a “c” or an “i” in the blank.
The materials that are conductors are Metal doorknob, Silver, Gold, Copper, Metal coat hanger, Paper clip, while insulators are Carpet, Wood, Rubber, Bulletin board, Clothing, Plastic.
What are electric conductors?
Conductors are materials that allow electric current to pass through them.
What are Insulators?Insulators are materials that do not allow electric current to pass through them.
Examples of conductorsMetal doorknobSilver GoldCopperMetal coat hangerPaper clipExamples of insulatorsCarpet WoodRubberBulletin boardClothingPlasticLearn more about conductors and insulators here: https://brainly.com/question/492289
When carbon dioxide is in ocean water it bonds to carbonate, preventing its use by(1 point) coral reefs and shellfish. coral reefs and shellfish. whales and shellfish. whales and shellfish. coral reefs and currents. coral reefs and currents. whales and currents.
When carbon dioxide is in ocean water it bonds to carbonate, preventing its use by coral reefs and currents.
How is carbon dioxide used in the ocean?Carbon dioxide (CO2) is made use of by aquatic photosynthetic organisms to make their own food.
Some examples of aquatic organisms that makes use of carbon dioxide are:
coral reefsalgaeaquatic plantsHowever, when carbon dioxide is in ocean water it bonds to carbonate, preventing its use by coral reefs and currents.
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Answer:
coral reefs and shellfish
Explanation:
Both need carbonate