Answer:
Find answers below.
Explanation:
Given the following data;
Voltage = 220V
Current = 15 A
a. To find the power;
Power = current * voltage
Power = 15 * 220
Power = 3300 Watts
b. To find the energy;
Time = 8 hours = 60 * 60 * 8 = 28800 seconds
Energy = power * time
Energy = 3300 * 8
Energy = 26400
Energy = 26.4 Kwh
c. Cost = 13 cents
Cost = 13 * 31 * 26.4
Cost = 106392 cents
A body is thrown up with a velocity of 78.4 m per second.How high will it rise and how much time it will take to return to its point of projection
Answer:
The maximum height reached by the body is 313.6 m
The time to return to its point of projection is 8 s.
Explanation:
Given;
initial velocity of the body, u = 78.4 m/s
at maximum height (h) the final velocity of the body (v) = 0
The following equation is applied to determine the maximum height reached by the body;
v² = u² - 2gh
0 = u² - 2gh
2gh = u²
h = u²/2g
h = (78.4²) / (2 x 9.8)
h = 313.6 m
The time to return to its point of projection is calculated as follows;
at maximum height, the final velocity becomes the initial velocity = 0
h = v + ¹/₂gt²
h = 0 + ¹/₂gt²
h = ¹/₂gt²
2h = gt²
t² = 2h/g
[tex]t = \sqrt{\frac{2h}{g} } \\\\t = \sqrt{\frac{2\times 313.6}{9.8} }\\\\t = 8 \ s[/tex]
Because cosmic distances are so vast, astronomers use light-years as their unit of distance. One light-year is defined as _______________________. The nearest star is a little more than ____ light-years away from us. When we see light from a galaxy 2 million light-years away, it has taken _______________ to reach us. Light from the Sun takes ___________ to reach us.
Answer:
Because cosmic disaster are so vast, astronomers use light-years as their unit of distance. One light-year is defined as the distance a beam of light travels in one year. The nearest star is a little more than 4.37 light-years away from us. When we see light from a galaxy 2 million light-years away, it has taken 2 million Earth years to reach us. Light from the Sun takes approximately 8.4269 minutes to reach us
Explanation:
i) One light-year is defined as the distance a light beam travels in a time of one Earth year. One light year is equivalent to 6 × 10¹² miles or 9.7 × 10¹² km
ii) The distance to the nearest star = 4.37 light-years
iii) When a star located in a galaxy that is 2.3 million light years away is seen, it has taken 2.3 million light years to reach us
iv) The distance of the Sun to the Earth = 151.58 million kilometers
The speed of light, c = 299792.458 km/s
The time it will take light to reach us from the Sun, 't', is given as follows;
t = 151.58 × 10⁶ km/(299792.458 km/s) ≈ 8.4269 minutes.
How is energy transformed from one form into another?
It could interact with each other.
Could be like plants getting energy from the sun
Tom and his twin brother Tim have a combined mass of 200.0 kg and are
zooming along in a 100.0-kg amusement park bumper car at 10.0 mls.
They bump Melinda's 100.0 kg car, which is sitting still. After the
collision, the twins continue ahead with a speed of 4.12 m/s. If Melinda
has a mass of 25.0 kg, How fast is Melinda's car traveling after it is
bumped across the floor?
Answer:
I don't know really I wish I could help
what's Quantum Mechanics?
Answer:
The branch of mechanics deals with the mathematical description of the motion and interaction of subatomic particles, incorporating the concepts of quantization of energy, wave–particle duality, the uncertainty principle, and the correspondence principle is Quantum Mechanics.
Answer:
Explanation:
Quantum Mechanics is a branch of physics that deals with sub-atomic particles and their energy states. Its theory says at subatomic level, energy exists in discrete levels as "quanta" and particles behave as waves.
A student pushed against a rock to try and move it. The student pushed really hard using a force of 2 N. however the rock would not move How much work
was done
Multiple choice-
-2N
-3N
-No work was done
Answer:
no work was done.
Explanation:
just because you put effort into something doesn't mean it pays off.
because the displacement was 0, the work is 0 too.
Which of the following is characteristic of the elements in a pattern?
a. related
b. neutral
c. isolated
d. discrete
Answer:
related
Explanation: got it right on test
The answer is:
related(i think)
how is the modern day periodic table arranged group experiencing Oppression/loss of fredom?
Opposite poles attract (N-S) while similar poles (N-N or S-S) repel.
can someone mark the brainliest?
Answer:
I think I can have a good day
Answer:
What do you mean by your question?
Which class of lever has mechanical advantage less than one?
. first class lever
. second class lever
. third class lever
Answer:
first class lever
Explanation:
Explanation:
first class leverhope it is helpful to you
A set of charged plates have an
area of 8.22*10^-4 m^2 and
separation 2.42*10^-5 m. The
plates are charged with
5.24*10^-8 C. What is the
potential difference V between
the plates?
(Unit = V)
pls hurry <3
Answer:
175
Explanation:
its for Acellus
The potential difference is V=1.743*10^-7
The voltage is generally referred to as the electric potential difference and it can be measured using a voltmeter. The electrical potential difference between the two plates is expressed as q=CV.
CALCULATION
we know,
q=CV
q={EA/d}*V
here q= 5.24*10^-8C
A=8.22*10^-5m^2
d=2.42*10^-8m
therefore , C={( 8.85*10^-12)*(8.22*10^-5)}/(2.42*10^-8)
C=3.006*10^-1
q=CV
q/C=V
V=1.743*10^-7
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i want to now why volcanoes erupt
Answer:
Deep within the Earth it is so hot that some rocks slowly melt and become a thick flowing substance called magma. Since it is lighter than the solid rock around it, magma rises and collects in magma chambers. Eventually, some of the magma pushes through vents and fissures to the Earth's surface.
Explanation:
Explanation:
Volcanoes erupt when molten rock called magma rises to the surface. Magma is formed when the earth's mantle melts. ... If magma is thick, gas bubbles cannot easily escape and pressure builds up as the magma rises. When the pressure is too much an explosive eruption can happen, which can be dangerous and destructive.
Which of the following does light demonstrate?
A. Both particle and wave characteristics
B. Particle characteristics only
C. Neither particle nor wave characteristics
D. Wave characteristics only
Answer:
A
Explanation:
Light has both wave and particle characteristics. It behaves as wave in examples such as Reflection, refraction, diffraction, interference. It behaves as a particle in photoelectric effect, compton's effect etc. Light is an example of wave-particle duality.
Light demonstrate both particle and wave characteristics. It can be understood by photo electric effect .
What is light?Light behaves like a particle in some phenomenon , for example photoelectric effect and like wave in some phenomenon , for example reflection and refraction , in this wave light has dual nature.
What is Photoelectric effect ?Emission of photo electrons due to incidence of light on a surface, is called photo electric effect. For it the energy of the incident light should be greater than the work function of the material on which light incidents.
To know more about photo electric effect and light
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14. Do loud sounds travel faster than soft sounds? Why or why not?
Answer:
The rarefaction particles are further apart when the sound is soft. Do loud sounds travel faster than soft sounds? No. Both travel at the same speed.
10. What is momentum of the water bottle before the collision? (read the
scenario again)
0 kg*m/s
O 5 kg*m/s
7 kg*m/s
O 10 kg*m/s
Answer:
O ksm/s
Explanation:
before collision,
Velocity =0
So,momentum of the bottle before collision=mass ×velocity
=mass×0
=0 kgm/s
Question 8
Swimming in an open body of water (like a river, lake, or ocean) is different from swimming in a
Answer:
pool
Explanation:
I think
A wire carries a current of 6.52 A in a direction that makes an angle of 44.8 degrees with the direction of a magnetic field of strength 0.258 T. What is the magnetic force on a 3.61 m length of wire
Answer:
[tex]F=4.27N[/tex]
Explanation:
From the question we are told that:
Current [tex]I = 6.52 A[/tex]
Angle [tex]\theta= 44.8 \textdegree[/tex]
Magnetic field [tex]B= 0.258 T.[/tex]
Length [tex]l=3.61m[/tex]
Generally the equation for Magnetic force F is mathematically given by
[tex]F=BIlsin\theta[/tex]
Therefore
[tex]F=0.258*6.52*3.61*sin 44.8[/tex]
[tex]F=4.27N[/tex]
Una persona puede oír sonidos cuyas longitudes de onda están comprendidas entre 17 m y 0,017 m. Si se considera que la velocidad del sonido es de 340 m/s, las frecuencias de los sonidos que oye, se encuentran entre:
Based on the information in the graph, why is energy released during the fusion of hydrogen (H) into helium (He)?
A. The hydrogen-1 nuclei (H - 1) are more stable than the helium-4 (He - 4) nucleus is, because they have less binding energy per nucleon than the helium has.
B. There are fewer nucleons in a helium-4 (He-4) nucleus than there are in four hydrogen-1 (H - 1) nuclei, so there is more energy released per nucleon when helium forms.
C. The hydrogen (H) nuclei are lower in energy than the helium (He) nucleus is, so more energy is stored in a helium nucleus.
D. The helium (He) nucleus is more stable than the hydrogen (H) nuclei are, because more mass is converted into binding energy in helium.
Answer:
D
Explanation:
Just had the same question and couldnt find and answer so i guessed. heres the answer no lol!
Answer: D.The helium (He) nucleus is more stable than the hydrogen (H) nuclei are, because more mass is converted into binding energy in helium.
Explanation:
apex physics
Write down the NAME of component that has a reading 8 V
Answer:
Sulphur dioxide monoxide
a 20 A fuse is connected in series with a circuit containing a 240 V source. What is the minimum resistance required to prevent the fuse from melting
Answer:
12 ohms
Explanation:
you just divide 240 and 20
240 V/ 20 A = 12 ohms
I WILL MARK YOU THE BRAINLIEST NO LINKS
There are 4 springs stretched by the same mass. Spring A stretches 25 cm. Spring B stretches 10 cm. Spring C stretches 100 cm. Spring D stretches 1 cm. Which spring is strongest?
A
B
C
D
yeah definitely spring c
The graph represents the reaction 3H2 + N2 2NH3 as it reaches equilibrium. Based on the graph, which two statements about this reaction are true?
PLEASE NO LINKS OR DOWNLOADS
Answer:A and C
Explanation: I took the test lol
Two statement that are correct based on graph are A, At point 4, the concentration of NH₄, NH₂ and H₂ remain constant, and C, Equilibrium is reached after point 3.
What are graphs?Graphs are the mathematical representation of the data that is easy to understand.
The reaction is [tex]\rm 3H_2 + N_2= 2NH_3[/tex]
The graph shows time on x-axis and concentration on y-axis.
Thus, the correct options are A and C.
Learn more about graphs
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¿Cuál de la plantas generadoras de electricidad te parece que tiene mas respeto por el medio ambiente?
In a certain circuit the number of electrons passing a given point in 3 seconds is 6 x 1014 electrons. What is the current flow in this circuit? (Show all work, including substitution with units)
Answer:
Current = 0.000032 Amperes
Explanation:
Given the following data;
Time, t = 3 seconds
Number of electrons = 6 * 10^14 electrons
Conversion:
First of all, we would convert the number of electrons to charge.
Coulombs = electron charge ÷ 6.2415 * 10^18
Coulombs = (6 * 10^14) ÷ (6.2415 * 10^18)
Coulombs = 0.000096 Coulombs
To find the current;
Mathematically, quantity of charge is given by the formula;
Quantity of charge, Q = current * time
Substituting into the formula, we have;
0.000096 = current * 3
[tex] Current = \frac {0.000096}{3} [/tex]
Current = 0.000032 Amperes
PLZ Help Me I give you brainlist also NO LONKS OR I REPORT and Have a gr8 day my peeps
Healthy human lungs look pink and spongy from the outside. The left lung is a little smaller than the right lung to make room for the heart. The lungs and heart are both protected by the rib cage. In the lungs, each main bronchus branches off into many smaller bronchi. The bronchi become smaller and smaller, and the smallest bronchi are called bronchioles. There are about 30,000 bronchioles in each lung, each about the same thickness as a strand of hair. The inhaled air eventually ends up in tiny air sacs called alveoli at the end of each bronchiole. There are about 300 million alveoli in each lung. They are covered with capillaries, tiny blood vessels that are only one cell thick. Oxygen travels from the alveoli through the capillaries to the bloodstream, heart and other cells
Which of these best represents the progression of bronchi, bronchioles and alveoli in the lungs?
A tree trunks that become smaller branches and twigs
B a tight flower bud that has opened into a full bloom
C whole apples that are sliced into separate wedges
D a bridge that crosses two rivers
Answer:
the answer is a because I saw it in a syllabus
Answer:
just doing this so you can give brainliest to the other person
have a great day!
Explanation:
How do I solve this problems
A periodic wave has a wavelength of 0.60 m and a speed of 40 m/s. What is the
wave frequency?
the total resistance of the circuit
The total resistance of a series circuit is equal to the sum of individual resistances. Voltage applied to a series circuit is equal to the sum of the individual voltage drops. The voltage drop across a resistor in a series circuit is directly proportional to the size of the resistor.
If you know the total current and the voltage across the whole circuit, you can find the total resistance using Ohm's Law: R = V / I. For example, a parallel circuit has a voltage of 9 volts and total current of 3 amps. The total resistance RT = 9 volts / 3 amps = 3 Ω
Current: The total circuit current is equal to the sum of the individual branch currents. Resistance: Individual resistances diminish to equal a smaller total resistance rather than add to make the total.
Answer: 3
Explanation: If you know the total current and the voltage across the whole circuit, you can find the total resistance using Ohm's Law: R = V / I. For example, a parallel circuit has a voltage of 9 volts and total current of 3 amps. The total resistance RT = 9 volts / 3 amps = 3 Ω.