Aswer:
To find the resistance of a circuit, Ohm's law is used:
[tex]\boxed{\mathbf{R= V \ / \ i }}[/tex]
Taking as data:
Volts(v) = 36
Current(I) = 9 amps
Resistance(r) = ¿?
We replace according to the formula:
v/i = r
[tex]\mathbf{{36 \ / \ 9 = 4}}[/tex]
Result: The resistance of the circuit is 4 Ohms.
A bowling ball rolled with a force of 20 N accelerates at a rate of 5 m/sec2, a second ball rolled with the same force accelerates 10 m/sec2. What are the
combined masses of the two balls?
Answer:
sorry I need points
Explanation:
IM SO SORRY
8. What is the total mechanical energy of a penny dropped off of the top of the Empire
State Building if it has a potential energy of 47 J, and a kinetic energy of 23 J?
A.18J
B.24 J
C.70 J
D.667 J
Answer:
C 70 Joules because all of the energy of converted to potential energy.
For a total of 8 hours, Erica rode her motorcycle down a freeway at 80 kilometers per hour.
There was a car behind her for one-quarter of that time. How far did Erica ride while the car
was behind her?
When a +0.00235 C charge
moves from point A to point B, its
electric potential energy increases
by 0.418 J. What is the potential
difference between A and B?
Include the correct sign, + or -.
(Unit = V)
Answer:
177.87
Explanation:
acellus
The potential difference between the points A and B is 177.9 V.
What is meant by potential difference ?Potential difference between any two points is the amount of work required to move a unit positive charge along any path from point A to point B without accelerating is referred to as the electric field.
Here,
The charge on the particle, q = +0.00235 C
The change in electric potential energy, ΔU = 0.418 J
The potential difference can be defined as the electric potential energy per unit charge.
Therefore, the potential difference between A and B,
V = ΔU/q
V = 0.418/0.00235
V = 177.9 Volt
Hence,
The potential difference between the points A and B is 177.9 V.
To learn more about potential difference, click:
https://brainly.com/question/23716417
#SPJ2
What is the frequency of a wave traveling at 10 m/s with a wavelength of 2 m?
Answer:
5 Hz
Explanation:
Given:
Wave velocity ( v ) = 10 m / sec
wavelength ( λ ) = 2 m
We have to calculate Frequency ( f ) :
We know:
v = λ / t [ f = 1 / t ]
v = λ f
= > f = v / λ
Putting values here we get:
= > f = 10 / 2 Hz
= > f = 5 Hz
Hence, frequency of sound is 5 Hz.
Who can help me do some 8th grade Science if so i will mark you the brainliest and also no links
Answer:
yes I help what is the question
A beam of light from a laser pen passed through the air and then through a glass plate. Which diagram accurately models this phenomenon? Use evidence and scientific reasoning to defend your claim.
Explanation:
the second diagram depicts the phenomenon which is refraction and this stems from light moving from a medium to another......and in this case light moves from a less dense medium to a denser medium hence is refracted away from the normal(the straight line between the medium of air and glass)
PLS GIVE BRAINLY
Diagram B shows the refraction event and this is from light to medium, in this case, the light travels from a slightly narrower area to a compact area and is, therefore, further away from the normal (vertical line between the air and glass).
When a ray of light travels from a central location?When a ray of light travels from a dense area to a rare place, it bends away from normal.
How do you calculate the refractive index?Refractive index is also equal to the velocity of light c of a given wavelength in empty space divided by its velocity v in a substance, or n = c/v.
Learn more about refraction here https://brainly.com/question/15838784
#SPJ2
How does the Doppler effect cause a siren's pitch to increase as it
approaches you?
A. Sound waves are spread out, decreasing wavelength and
increasing frequency.
B. Sound waves are spread out, increasing wavelength and
decreasing frequency.
C. Sound waves are pushed closer together, increasing wavelength
and decreasing frequency.
D. Sound waves are pushed closer together, decreasing wavelength
and increasing frequency.
Answer:
my answer is c
Explanation:
the sound waves get closer together, increasing their frequency. This listener hears the pitch of the siren get higher. As the car speeds away from listener B, the sound waves get farther apart, decreasing their frequency.
What makes a model not useful?
A.) if it is in proportion with the object it represents
B.) if it is made of a different material than the object it represents
C.) if it is not the same mass of the object it represents
D.) if it is out of proportion with the object it represents
A tennis ball and a bowling ball are both rolled down a bowling lane. If the
balls are rolling in the same direction at the same speed, which of the
following is true?
A. The balls have the same momentum because they have equal
velocities.
B. The tennis ball has greater momentum because its mass is less
than the mass of the bowling ball.
C. The balls have no momentum because they have equal velocities,
D. The bowling ball has greater momentum because its mass is
greater than the mass of the tennis ball.
Answer:
D. The bowling ball has greater momentum because its mass is
greater than the mass of the tennis ball.
Explanation:
The momentum of a body is defined as the product of mass and velocity. That is;
p = mv
This implies that the momentum of a body depends both on its mass and velocity respectively.
The question clearly states that the tennis ball and the bowling ball have the same speed and are rolling in the same direction. However, the bowling ball has a larger mass compared to the tennis ball hence it possesses a greater momentum than the tennis ball.
If the gravitational force between a planet of mass M and a satellite of mass m at distance is 2.5 * 10 ^ 3 * N what is the force exerted on a larger satellite of mass 2m , at a distance 0.8r away from planet M ?
Answer:
F = 7.8 10³ N
Explanation:
For this exercise we will use the law of universal Gravitational
F = G M m / r²
for initial conditions
F₀ = G M m₀ / r₀²
They tell us that the mass changed at m = 2m distance at r = 0.8r₀
we substitute
F = G M 2m₀ / (0.8 r₀) ²
F = (GM m₀/ r₀²) [tex]\frac{2}{0.64}[/tex]
F = 3.125 F₀
let's calculate
F = 3.125 2.5 10³
F = 7.8125 10³ N
Which of the following actions may help to prevent a rear-end collision?
rolling forward if there is room
pumping the brake to make the brake lights flash
rolling forward if the front zone is clear
all of the above
a student uses a spring to launch a marble vertically in the air. The mass of the marble is
0.02 kg and when the spring is stretched 0.08 m it exerts a force of 58 N. What is
the maximum height the marble can reach?
Answer:
the maximum height reached by the marble is 11.84 m.
Explanation:
Given;
mass of the marble, m = 0.02 kg
extension of the string, x = 0.08 m
force applied to the string, F = 58 N
Apply the principle of conservation of energy;
elastic potential energy = gravitational potential energy
¹/₂fx = mgh
[tex]h = \frac{Fx}{2mg} \\\\h = \frac{58 \ \times \ 0.08}{2 \ \times \ 0.02 \ \times \ 9.8} \\\\h = 11.84 \ m[/tex]
Therefore, the maximum height reached by the marble is 11.84 m.
I WILL MARK YOU THE BRAINLIEST NO LINKS
_____________ is the rubbing force that acts against motion between two touching surfaces.
Inertia
Friction
Momentum
Acceleration
Answer:
friction
Explanation:
when 2 plates rub againts each other it makes friction same as in the earth. EXAMPLE just like how you rub your hands together
Answer:
Friction
Explanation:
You walk 200m south, then 50m east. What is your displacement?
You are a drop of water going through the water cycle. Where doyou go?How do you get there? What processes do you go through?Include at least three phases of the water .
Answer:
If I were a drop of water and present in the ocean or any other aquatic system I should have moved in the water cycle as due to heats the water of the aquatic system such as the ocean becomes hot and evaporated turning into vapour, a gaseous phase of water.
Then vapour colloids with cooler air, and become cooler and convert into drops of water again which is called condensation. Drops of water again get back to the earth surface it can be in the form of rain, snow (ice form of water) termed as precipitation.
The three phases of the water cycle are
---> evaporation ---- > condensation -----> precipitation----
Removing an electron from a neutral atom will result in an atom that?
Removing an electron from a neutral atom will result in an atom that is positive.
Answer:
give me brainllest if this is right.
Explanation:
No, the atom will get a positive charge.
An observer notices that 12 waves pass by in 4 seconds. What is the frequency of these waves? 0.33 Hz 16 Hz 48 Hz 3 Hz
Answer:
Frequency = 3 Hz
Explanation:
Frequency is a measure of Hertz. Recall that Hertz is the unit expressing cycles/second, where one second is the denominator of the fraction for simplicity. If there are 12 waves every four seconds, and one wave represents one cycle, dividing 12 waves by 4 seconds will give the answer of 3 waves (or cycles) per one second.
The frequency of these waves is 3 Hz. The correct option is D.
What is a frequency?Frequency is the number of cycles or oscillations of a wave that occur in one second, measured in Hertz (Hz). It is a fundamental property of waves and is directly related to the energy and wavelength of the wave. The higher the frequency of a wave, the more energy it carries and the shorter its wavelength.
The formula for frequency (f) is:
f = 1 / T
where f is the frequency in Hertz (Hz) and T is the period of the wave in seconds (s). The period is the time it takes for one complete cycle or oscillation of the wave to occur.
Here in the Question,
The frequency of the waves can be calculated using the formula:
frequency = number of waves/time
In this case, the number of waves is 12 and the time is 4 seconds. Substituting these values into the formula, we get:
frequency = 12 waves / 4 seconds = 3 Hz
Therefore, the frequency of these waves is 3 Hz.
To learn more about Frequency click:
brainly.com/question/1292129
#SPJ3
which feature of a balanced chemical equation demonstrates the law of conservation of mass?
A balanced equation demonstrates the conservation of mass by having the same number of each type of atom on both sides of the arrow
An electron has a mass of 9.1x10-31 kg. What is
its momentum if it is travelling at a speed of
3.5x10 m/s?
Answer:
3.185×10^-29 kgm/s
Explanation:
Momentum(p)=mass×velocity
=9.1×10^-31×3.5×10
=3.185×10^-29 kgm/s
The heart working with the blood vessels to pump blood is which body system?
Digestive
Nervous
Respiratory
Cardiovascular
If a force of 10 N acts on an object and an additional force of 6 N acts on the object in
the same direction. What will be the net force be on the object?
4N
60 N
6N
16 N
Answer:
D
Explanation:
For this kind of problem, forces add. F = F1 + F2
F1 = 6 N
F2 = 10 N
F = 6N + 10N
F = 16N
hello please help i’ll give brainliest
Answer:
First answer.
Explanation:
There may be a 5N force, but if the frictional force also equals 5N, than they cancel eachother out, resulting in the brick still staying still, as it is resting on a (perfectly) level surface, but any amount of force would make the brick move.
Which of the following descriptions apply to the Milky Way galaxy
Which of these would be caused by a chemical change?
A)
The formation of lava.
B)
Sedimantary rock layering over time,
C)
Metamorphic rock forming from igneous.
D)
Metamorphic rock eroding to form sedimentary rock.
Answer:
The answer is C!
Metamorphic rock forming from igneous.
Hope this helps you! :))
need help on these questions
Calcula en watts y en caballos de fuerza la potencia mecánica de una grúa que efectúa un trabajo de 60000 joules en 3 segundos
Answer:
I. Potencia mecánica = 20000 Watts.
II. Potencia mecánica = 26 caballos de fuerza.
Explanation:
Dados los siguientes datos;
Trabajo realizado = 60000 julios
Tiempo = 3 segundos
Para encontrar el poder;
I. En vatios:
Potencia mecánica = trabajo realizado / tiempo
Potencia mecánica = 60000/3
Potencia mecánica = 20000 Watts
II. En caballos de fuerza;
1 vatio = 0.0013 caballos de fuerza
20000 Watts = 20000 * 0.0013 = 26 caballos de fuerza.
Potencia mecánica = 26 caballos de fuerza.
Una grua que efectua un trabajo de 60000 J en 3 s, tiene una potencia mecánica de 20000 W o 27 HP.
Una grua efectua un trabajo (W) de 60000 Joule en 3 segundos (t).
La Potencia mecánica (P) se define como la cantidad de trabajo realizado por unidad de tiempo.
[tex]P = \frac{W}{t} = \frac{60000J}{3s} = 20000W[/tex]
Podemos convertir 20000 W a caballos de fuerza usando el factor de conversión 1 HP = 735.5 W.
[tex]20000W \times \frac{1HP}{735.5W} = 27 HP[/tex]
Una grua que efectua un trabajo de 60000 J en 3 s, tiene una potencia mecánica de 20000 W o 27 HP.
Aprende mas: https://brainly.com/question/14215199
A young girl is on a swing that completes 35.0 cycles in 25 seconds. What are her frequency and period?
Moby lifted Tim off the ground a distance of 2 meters using a force of 2N. How much work did Moby do?
Answer:
4 J
Explanation:
As I guess,
From the equation,
work done = force × distance travelled
= 2 × 2
= 4 J
There are no conversions since all are given in the standard form.
Tara kain tayo gaize ulam natin sardinas tara kain gaize?
A.heat
B.sun
C.earth
D.warm
Please answer it please
Answer:
Heat.Explanation:
Pyramids were built for religious purposes. The Egyptians were one of the first civilizations to believe in an afterlife. They believed that a second self called the ka lived within every human being. When the physical body expired, the ka enjoyed eternal life