When a chunk of cosmic material the size of a golf ball or a baseball hits the Earth's atmosphere it makes a fireball.
What is meteor shower?Meteor shower is an event that occurs when tiny particles of stones that are of the size of a golf ball or baseball hits the earth's atmosphere.
As the particles enters the earth's atmosphere, they create friction through rubbing against the particles of the air. This eventually causes the particles to heat up leading to the formation of a fireball.
Meteor shower usually occurs between midnight and the very early hours of the morning.
Therefore, when a chunk of cosmic material the size of a golf ball or a baseball hits the Earth's atmosphere it makes a fireball.
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What is the kinetic energy of an 1,850.0-kg car moving at 30.0 m/s? And at 120 km/h?
Answer:
See below
Explanation:
For 30 m/s :
KE = 1/2 mv^2
1/2 (1850)(30^2) = 832500 J
For 120 km/hr :
120 km/hr = 33.333 m/s
KE = 1/2 1850 (33.333)^2 1027777.8 J
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.
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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1.What happens when ice cubes melt in a glass?
a
No energy is transferred.
B
Heat travels from the ice to the warmer
water.
C
The water warms up due to the humidity
D
Heat is transferred from the warmer water
to the ice cubes.
[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]
The Correct choice is D
Heat always travel from higher temperature body to lower temperature. so we can infer that heat is transferred from the warmer water to the ice cubes which causes melting of that ice in there.
Español:
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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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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.
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
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
What is a gene? *
A) when a male and a female reproductive cell combine to create an offspring
B) the way something is shaped or constructed
C) a type of large molecule that performs important functions inside organisms
D)an instruction for making a protein molecule
[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]
The Correct choice is D
Gene are special biomolecules that have all the required information of that organism, and has an instruction for making protein molecules.
Place 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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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:
What is the process of charging by induction?
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 voltsIf the wavelength is 6 meters and the period is 2 seconds, what's the wave velocity?
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
The location of a planet relative to the Sun has a lot to do with its _____; whether it is one of the inner terrestrial planets or outer gas giants.
Answer:
Composition.
Explanation:
the inner planets tend to be made up of more solid materials such as iron, while outer planets are made up of primarily gas and ice
A motorist drives 5 km east then drives 5 km north. Calculate their distance travelled and their displacement.
Answer:
See
distance is 10 km
displacement is 5√2 km
Explanation:
DISTANCE:
Distance is scaler so, it doesn't depend on the direction
so distance is 5+5 which is 10
DISPLACEMENT:
Displacement is a vector, so, it depends on direction.
Now when we see north and east, they form a right angle, so we need to calculate the hypotenuse of the triangle for displacement as it is the shortest route between the two points.
Let hypotenuse be h
5² + 5² = h² Moved 5 km in east and north so values are 5h² = 25+25h² = 50h = √50h=5√2Hope it helps
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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.
What do the lines and numbers on the chromosome represent?
A) Organelles
B) Mutations
C) Genes
D) Proteins
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:
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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Visual angle is a measure of the A. size an object takes up on the retina. B. actual size of an object. C. object's contrast divided by its spatial frequency. D. angle between the observer and an object. E. perceived size of an object.
Answer:
c
Explanation:
Please help I cannot fail!
James passes a magnet over a pile of paperclips and the magnet picks up 2 of the paperclips. Then he passes a different magnet over the pile of paperclips and it picks up 6 paperclips. Which of the
following is NOT a testable
hypothesis that James might develop based on this data?
1. a weaker magnet will pick up more
paperclips than a stronger magnet
2. all magnets pick up paperclips, but the
number of paperclips depends on the
magnet
3. magnets will pick up metal objects but
not plastic objects
4. a stronger magnet will pick up more
paperclips than a weaker magnet
Answer: 2
Explanation:
The statement "All magnets pick up paperclips, but the number of paperclips depends on the magnet" is neither a hypothesis nor testable.
The hypothesis that is not testable based on the given data is magnets will pick up metal objects but not plastic objects. Option C is the correct answer.
The reason this hypothesis is not testable based on the given data is that the information provided only pertains to the number of paperclips picked up by different magnets. It does not provide any information or evidence regarding the ability of magnets to pick up metal objects versus plastic objects. Option C is the correct answer.
In order to test this hypothesis, we would need data or experiments specifically focusing on the interaction between magnets and metal objects as well as magnets and plastic objects. The given data only provides information about the number of paperclips picked up by different magnets, which does not support or refute the hypothesis about the ability of magnets to pick up different materials.
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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.
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
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.
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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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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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 ⚜