Answer:
Explanation:
W = 25 Watts
V = 12.6 Volts
I = ? I is the current in amperes.
Solution
25 = 12.6 * I
I = 25 / 12.6
I = 1.98 amperes
V = 12.6
I = 1.98
R = ??
V = I * R
12.6 = 1.98 * R
R = 12.6 / 1.98
R = 6.35 ohms
What units are used to measure mass and weight?
O Mass and weight are measured in kilograms. O Mass and weight are measured in newtons. Mass is measured in kilograms, and weight is measured in newtons.
O Mass is measured in newtons, and weight is measured in kilograms.
Answer:
mass is measured in kilograms and weight is measured in newtons
Explanation:
Ava learns in her science class that the Sun is much larger than the Moon. When she looks at the Sun and the Moon in the sky, however, they appear to be about the same size. Which of the following best explains why this is true?
A.
The Moon is much older than the Sun.
B.
The Moon shines more brightly than the Sun.
C.
The Moon is much farther away from the Earth than the Sun is.
D.
The Moon is much closer to the Earth than the Sun is.
5 examples of electrical energy
Answer:
its very simple this list the items that you have in your house that have electric energy
Explanation:
Heat flows into a gas in a piston and work is performed on the gas by its surroundings. The amount of work done is equal to the heat added. In this situation,
Answer:
The Internal energy of the gas did not change
Explanation:
In this situation the Internal energy of the gas did not change and this is because according the the first law of thermodynamics
Δ U = Q - W ------ ( 1 )
Δ U = change in internal energy
Q = heat added
W = work done
since Q = W. the value of ΔU will be = zero i.e. No change
What is the difference in average speed between two car, one that traveled 150 kilometers in 5 hours and the other that traveled 130 kilometers in the same time?
Answer:
just like he saide you can downloude the answer
Assume you have a person with a mass of 65 kg riding a skateboard down a ramp. While they are
still 4.8 m high, they are traveling at a speed of 8.0 m/s.
a) Calculate the Eg. [write here)
b) Calculate theEk [write here]
c) Calculate the Etotal. [write here]
d) If the ramp had a total height of 8.0 m, what would be their Eg, Ek, and Etotal at that height?
Answer:
a) Eg = 3,060.72 j
b) Ek = 2,080 j
c) Etotal = 5,140.72 j
d) Eg = 5,140.2 j
Ek = 0 j
Etotal = 5,140.2 j
Explanation:
The given parameters of the person riding the skateboard are;
The mass of the person, m = 65 kg
The height of the person (above ground level), h = 4.8 m
The speed at which the person is traveling, v = 8.0 m/s
a) The gravitational potential energy, Eg = m·g·h
Where;
m = The mass of the object at the given height = 65 kg
g = The acceleration due to gravity, g ≈ 9.81 m/s²
h = The height by which the object is elevated = 4.8 m
∴ Eg = 65 kg × 9.81 m/s² × 4.8 m = 3,060.72 joules
The gravitational potential energy, Eg = 3,060.72 J
b) The kinetic energy, Ek, is given as follows;
Ek = 1/2·m·v²
Where;
v = The velocity of the object = 8.0 m/s
∴ Ek = 1/2 × 65 kg × (8.0 m/s)² = 2,080 joules
The kinetic energy, Ek = 2,080 J
c) The total mechanical energy, Etotal = Eg + Ek
∴ Etotal = 3,060.72 j + 2,080 j = 5,140.72 J
The kinetic energy, Ek = 5,140.72 J
d) If the ramp had a total height of 8.0 m, we have;
At the 8.0 m height
Etotal = Eg(max), Ek = 0 j
With the given values, we get;
Eg(max) = 65 kg × 9.81 m/s² × 8 m = 5,101.2 joules = Etotal
Eg(max) = 5,101.2 j
Etotal = 5,101.2 j
Ek = 0 j
However, using only the values in the question with the assumption that all things being equal, we have;
Etotal = Constant = 5,140.72 j
Eg a the max height, 8.0 m = Eg(max) = Etotal = 5,140.2 j
Ek = 0 j
The Earth's atmosphere is opaque to the
part of the electromagnetic
spectrum
a)
b)
c)
-)
)
0
Visible
Infrared
X-Ray
All of the above
A and Care correct
Band C are correct
During which process does layer upon layer of sediment build up, exerting pressure on the layers below?
a. erosion
b. compaction
c. conglomerate
d. weathering
What are two ways fusion is used in the real world.
Answer:
The main application for fusion is in making electricity. Most fusion reactors make less radiation than the natural background radiation we live with in our daily lives. ... Clean - No combustion occurs in nuclear power (fission or fusion), so there is no air pollution.
R
R2
R
100 12
300 12
50 12
The question below refers to the circuit shown in the image
9V -
What is the equivalent resistance of the circuit?
O 1500
0 3500
Ο 400Ω
O 4500
Answer:
3500 i would think
Explanation:
If Lillian weighs 500 N, what is her weight in pounds?
Answer:
112.404 Pounds
Explanation:
divide the force value by 4.448
A book is placed on a table and a bike moves on a road.
Which statement is correct?
Both the book and the bike have kinetic energy.
Both the book and the bike have potential energy.
The book has potential energy and the bike has kinetic energy.
The book has kinetic energy and the bike has potential energy.
The book has potential energy and the bike has kinetic.
kinetic energy is energy possessed when a object is in motion. The bike is moving. Therefore, it has kinetic energy. The book isn't moving. Hopefully that helped
In the analogy for how a wave travels along a line of dominoes standing on end, each domino represents___________.
Answer:
im 99% sure its initial disturbance
Explanation:
someone please help I have no idea what to do
Answer:
10⁶ or 1000000
Explanation:
formula: frequency = velocity/wavelength = [tex]\frac{3.0x10^{8} }{3.0x10^{2}}[/tex]i'm not sure because the teacher probably wrote the question wrong.When serving you start on the right and must hit to which designated area?
- right side you are looking at
- left side you are looking
- any place over the net
(pickle ball)
you can serve to anyplace over the net
I need help plz!!! Please help...
Answer: 60
Explanation:
which of the following is a freshwater biome? A.wetland B.estuary C.ocean D.coral reef
Answer:
Wetland
Explanation:
Have a good day!
Please ans fast I will mark brainliest
For sure
can someone help me plz
Answer:
Positive I believe... because if you drop it it is negative so picking up a book means positive. thanks for the points though!
Explanation:
Can I have brainliest please? <3
Stress is __________.
A.
positive or negative, depending on circumstances
B.
a body's automatic physical response
C.
a negative reaction to outside influences
D.
A and B only
Answer:
(A)
Explanation:
Depending on the circumstances, there are such things called good stress and bad stress.
Ten examples of artificial luminous objects
paper, pencil, wood, human beings, moon.
Luminous objects are those objects which emit their own light.
Luminous objects can be natural as well as manmade.
One of the examples of natural luminous objects are- torch bulb, stars, sun, lighted candle.
Artificial luminous objects are those which cannot emit their own light.
Some of the examples of the artificial luminous objects are- paper, pencil, wood, human beings, moon.
A 450 kilogram motorcycle is moving at a speed of 65 m's how much kinetic energy does the motorcycle have
Explanation:
K.E = 1/2mv²
K.E = 1/2 * 450 *65*65
K.E = 950625J
Someone please help me
Answer:
A thesis should be a statement that can be argued.
Explanation:
The weight of a luggage is 69.3 N on the moon. Find its weight on the Earth.
Answer:
Explanation:
weight on moon = 1/6* weight on earth
69.3=1/6*weight on earth
weight on earth = 69.3*6
weight on earth = 415.8 N
Which statement describes the difference between metallic bonds and Van der Waals forces
Explanation:
Metallic bonds hold metal atoms and freely moving valence electrons together, while Van der Waals forces hold nonpolar molecules together. OD. Metallic bonds hold metal atoms and freely moving valence electrons together while Van der Waals forces hold atoms together when they share valence electrons.
Which chemical reaction is the fastest?
A. Mold grows on bread.
B. Bacteria make yogurt from milk.
C. Yeast produces air pockets in bread.
D. Baking soda produces bubbles when vinegar is poured on it.
Answer:
D. Baking soda produces bubbles when vinegar is poured on it.
Explanation:
Acetic acid = C₂H₄O₂
Baking soda = NaHCO₃
C₂H₄O₂ + NaHCO₃ → NaC₂H₃O₂ + H₂O + CO₂
When baking soda is added to vinegar, a chemical reaction will take place producing a huge amount of carbon-dioxide in the form of bubbles in the foaming mixture.
Which of the following is not a unit of volume?
A. L
B. mL
C. m^3
D. cm^2
Explanation:
D. cm^2
It's a unit for quadruple centimeters. All of the others are used to charge the amount of water in a specific bowl etc.
When two different species compete for resources, it is______ competition.
Answer:
it is a interspecific competition
Explanation:
i just took a test with this question
These 2 processes cause watersheds to change.
Answer:
Change is an integral component of the watershed. The wide variations in river and stream flow regularly change shorelines, stream channels and stream corridors. Upland areas of watersheds also undergo changes due to ecological succession, disease, competition, human activity and other factors.
Explanation:
Which statement compares the strengths of electric forces between particles of matter?
Please don't just guess for points, if your answer is wrong i'll report it.
A. Hydrogen bonds are stronger than ionic bonds but weaker than Van der Waals forces.
B. Metallic bonds are stronger than hydrogen bonds but weaker than ionic bonds.
C. Hydrogen bonds are weaker than Van der Waals forces but stronger than metallic bonds.
D. Metallic bonds are weaker than hydrogen but are stronger than ionic bonds.
B. Metallic bonds are stronger than hydrogen bonds but weaker than ionic bonds.
The statement is discussing the relative strengths of different types of electric forces that can exist between particles of matter.
Metallic bonds are formed by the sharing of electrons between atoms in a metal, and are considered relatively strong. Hydrogen bonds are formed between molecules that contain hydrogen and are relatively weak compared to metallic bonds.
Ionic bonds are formed between positively and negatively charged ions and are generally considered to be the strongest of these three types of bonds. Thus, the statement concludes that metallic bonds are stronger than hydrogen bonds but weaker than ionic bonds in terms of their relative strengths.
For more such question on hydrogen
https://brainly.com/question/2111051
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