The voltage applied to the circuit is 18 V. So, the fourth option is correct.
What is Ohm's law ?Ohm's law states that, the voltage across a conducting material is directly proportion to the amount of steady current passing through material and also the resistance of the material.
Here,
Current flowing through the circuit, I = 3.6 A
Resistance of the circuit, R = 5 Ω
According to Ohm's law,
V [tex]\alpha[/tex] I
V [tex]\alpha[/tex] R
So, V = IR
Voltage applied to the circuit,
V = 3.6 x 5
V = 18 V
Hence,
The voltage applied to the circuit is 18 Volt.
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a car climbs 10.0 kilometers up a hill that inclines 8.0 degrees. what is the car's vertical displacement.
How long does it take the ball to reach its maximum height? answer in units of s?
The gravity of Neptune is about 1.1 times the gravity of earth. How will the mass of an object on Neptune compare with its mass on earth
A longitudinal wave is a type of wave that transfers energy _____ to the direction of wave motion. A transverse wave, on the other hand, is a type of wave that transfers energy _____ to the direction of wave motion.
parallel then perpendicular
In a Longitudinal wave, the direction of the wave motion is parallel to the direction of the energy transfer. The correct blanks are parallel and perpendicular.
Longitudinal wave:
In this direction of the wave motion is parallel to the direction of the energy transfer.It requires a medium to travel.Transverse wave:
In this direction of the wave motion is perpendicular to the direction of the energy transfer.It does not require any medium.Therefore, the correct blanks are parallel and perpendicular.
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True or false cold air can hold more moisture than warm air
According to our theory of solar system formation, why did uranus and neptune end up to be much less massive than jupiter and saturn?
Does the inertia of an object change as the object’s velocity changes explain
A roller coaster car travels through a loop in 3.1 s with a centripetal acceleration of 26 m/s^2. What is the radius of the roller coaster loop?
A. 6.3 m
B. 20 m
C. 25 m
Answer:
The radius of the roller coaster loop is 6.3 m.
Explanation:
It is given that,
Time taken by roller coaster, t = 3.1 s
Centripetal acceleration, [tex]a_c=26\ m/s^2[/tex]
Velocity in a circular path is given by :
[tex]v=\dfrac{2\pi r}{t}[/tex]
Centripetal acceleration, [tex]a_c=\dfrac{v^2}{r}[/tex]
So, acceleration, [tex]a_c=\dfrac{4\pi^2r}{t^2}[/tex]
[tex]r=\dfrac{a_ct^2}{4\pi^2}[/tex]
[tex]r=\dfrac{26\times 3.1^2}{4\pi^2}[/tex]
r =6.3 m
So, the correct option is (A) " r = 6.3 m". Hence, this is the required solution
Answer:
r = 6.32 meters
Explanation:
Given that,
The centripetal acceleration acting on the roller coaster, [tex]a_c=26\ m/s^2[/tex]
Time taken by the car, t = 3.1 s
The centripetal acceleration act on an object when it moves in circular path. Its formula is given by :
[tex]a_c=\dfrac{v^2}{r}[/tex]
v is the velocity of car, [tex]v=\dfrac{2\pi r}{t}[/tex]
[tex]a_c=\dfrac{(\dfrac{2\pi r}{t})^2}{r}[/tex]
On rearranging above equation,
[tex]r=\dfrac{a_ct^2}{4\pi ^2}[/tex]
[tex]r=\dfrac{a_ct^2}{4\pi ^2}[/tex]
[tex]r=\dfrac{26\times (3.1)^2}{4\pi ^2}[/tex]
r = 6.32 meters
So, the radius of the roller coaster loop is 6.3 meters. Hence, this is the required solution.
what is the weight in pounds of a 7.0 kilogram bowling ball on earth's surface
Explanation:
It is given that,
Mass of the bowling ball, m = 7 kg
We need to find the weight in pounds of 7 kg bowling ball in pounds. Firstly, we need to find the relationship between kilogram and pound. It is as follows :
1 kilograms = 2.204 pounds
The given mass of 7 kilograms can be converted to pounds by using the unitary method as :
[tex]7\ kilograms=(7\times 2.204)\ pounds[/tex]
7 kg = 15.428 pounds
Hence, the weight of bowling ball is 15.428 pounds. Hence, this is the required solution.
What is the equivalent resistance in a parallel circuit that has the following three resistors: 6.8 ohms, 9.0 ohms, and 15.0 ohms? . A.. 10.3 ohms. B.. 30.8 ohms. C.. 3.08 ohms. D.. 0.80 ohms. E.. 12.8 ohms
A parallel-plate capacitor has a plate area of 0.2 m2 and a plate separation of 0.1 mm. to obtain an electric field of 2.0 × 106 v/m between the plates, the magnitude of the charge on each plate should be
The magnitude of the charge on the plates of a parallel-plate capacitor necessary to establish an electric field of 2.0 x 10^6 V/m, with an area of 0.2 m^2 and plate separation of 0.1 mm, would be 4 x 10^5 C.
Explanation:In relation to your question about a parallel-plate capacitor, the electric field (E) between the plates is proportional to the surface charge density, which is defined as the charge (Q) on each plate divided by the area (A) of the plate. By determining the charge on each plate, we use the equation E = Q/A. We can rearrange this equation to find the charge Q = E x A. Substituting the given values: Q = 2.0 x 106 V/m x 0.2 m2, gives us a result of Q = 4 x 105 C. Therefore, to obtain an electric field of 2.0 x 106 V/m between the plates of a parallel-plate capacitor, with a plate area of 0.2 m2 and a plate separation of 0.1 mm, the magnitude of the charge on each plate should be 4 x 105 C.
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The magnitude of the charge on each plate of the capacitor should be 3.54 µC.
To determine the magnitude of the charge on each plate of a parallel-plate capacitor given the electric field and other parameters, follow these steps:
Given:
Plate area [tex](\( A \))[/tex] = 0.2 m²Plate separation [tex](\( d \))[/tex] = 0.1 mm = 0.1 × 10⁻³ m = 0.0001 mElectric field [tex](\( E \))[/tex] = 2.0 × 10⁶ V/mFormulae:
1. Electric Field Relation:
The electric field [tex]\( E \)[/tex] between the plates of a capacitor is given by:
[tex]\[ E = \frac{V}{d} \][/tex]
where [tex]\( V \)[/tex] is the voltage across the plates and [tex]\( d \)[/tex] is the separation between the plates.
Rearranging to find [tex]\( V \)[/tex]:
[tex]\[ V = E \times d \][/tex]
Substituting the given values:
[tex]\[ V = 2.0 \times 10^6 \, \text{V/m} \times 0.0001 \, \text{m} = 200 \, \text{V} \][/tex]
2. Capacitance:
The capacitance [tex]\( C \)[/tex] of a parallel-plate capacitor is given by:
[tex]\[ C = \frac{\varepsilon_0 A}{d} \][/tex]
where [tex]\( \varepsilon_0 \) (the permittivity of free space) is \( 8.854 \times 10^{-12} \, \text{F/m} \)[/tex].
Substituting the given values:
[tex]\[ C = \frac{8.854 \times 10^{-12} \, \text{F/m} \times 0.2 \, \text{m}^2}{0.0001 \, \text{m}} \][/tex]
[tex]\[ C = \frac{1.7708 \times 10^{-12} \, \text{F}}{0.0001} \][/tex]
[tex]\[ C = 1.7708 \times 10^{-8} \, \text{F} = 17.7 \, \text{nF} \][/tex]
3. Charge:
The charge [tex]\( Q \)[/tex] on the capacitor is given by:
[tex]\[ Q = C \times V \][/tex]
Substituting the capacitance and voltage:
[tex]\[ Q = 17.7 \times 10^{-9} \, \text{F} \times 200 \, \text{V} \][/tex]
[tex]\[ Q = 3.54 \times 10^{-6} \, \text{C} = 3.54 \, \text{µC} \][/tex]
Which of the examples below is an example of convection? A) rubbing your hands together. B) heating a fish tank. C) basking in the sun. D) striking a match.
the right answer is heating a fish tank.
A car goes from rest to a speed of 90 km/h in 10 seconds . What is the car's acceleration in m/s²
a 60 kg student in a rowboat on a still lake decides to dive off the back of the boat. The studen'ts horizontal aceleration is 2.0 m/s2 while in contact with the boat. What horizontal force does the student exert on the boat?
a 30N toward the back of the boat
b 120 n toward the front of the boat
c 30 n toward the front of the boat
d 120 n toward the back of the boat
Answer:
Your answer would be b 120 n toward the front of the boat
Explanation:
I took this test and got this correct, here's proof
Hope you get a good grade, from a fellow comrade
Emission of light from an atom occurs when the electron:
Answer: this happens when the atom drops from a higher to a lower energy level
Explanation:
The emission of light from an atom occurs when an electron is from a higher to a lower energy level.
What are electrons?
Electrons are negatively charged particles. Atom is the smallest particle of the molecule. Atoms have positively charged particles called protons. The negatively charged particle is called electrons.
The neutral particle is called the neutron. Electrons rotated in the valence shell. The electrons which are in the last shell are called the valence shell. The electrons in the valence shell move from the last shell to the second shell and then emits energy.
Absorption is the process by which an atom transitions from its ground state to an excited state by absorbing energy from its environment.
After absorbing the energy, the electron advances to a higher energy state. Up the opposite process, called emission, the electron releases the excess energy it had taken in and goes back to its ground state.
Therefore, The emission of light from an atom occurs when an electron is from a higher to a lower energy level.
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A 10.0 kg block on a table is connected by a string to a 63 kg mass, which is hanging over the edge of the table. assuming that frictional forces may be neglected, what is the magnitude of acceleration of the block when the other block is released?
Answer:
8.45m/s^2
Explanation:
a = m2g / m1+m2
63 + 10 = 73 kg
63*9.8 / 73 = 8.45m/s^2
The magnitude of the acceleration of the block when the other block is released would be 8.466 m/s²
What is Newton's second law?Newton's Second Law states that The resultant force acting on an object is proportional to the rate of change of momentum.
The mathematical expression for Newton's second law is as follows
F = ma
As given in the problem A 10.0 kg block on a table is connected by a string to a 63 kg mass, which is hanging over the edge of the table. assuming that frictional forces may be neglected,
The force responsible for the motion is only due to the hanging mass of 63Kg because of the gravitational pull of the earth
F = mg
= 63×9.81 N
=618 N
the acceleration would be the same for both the block as both are connected by a string
a = F/(m₁+m₂)
a = 618/(63+10)
a = 8.466 m/s²
Thus , The magnitude of the acceleration of the block when the other block is released would be 8.466 m/s²
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How many moles of MgCl2 are there in 315 g of the compound? mol
What is the average velocity of the particle from rest to 15 seconds?
A.) 1.1 meters/second
B.) 1.2 meters/second
C.) 1.3 meters/second
D.) 1.4 meters/second
Answer : The correct option is, (D) 1.4 meters/second
Solution :
Average velocity : It is defined as the displacement per unit time.
Formula used for average velocity :
[tex]v_{av}=\frac{d}{t}[/tex]
where,
[tex]v_{av}[/tex] = average velocity
d = displacement of the particle
t = time taken
Now put all the given values in the above formula, we get the average velocity of the particle.
[tex]v_{av}=\frac{(21-0)m}{15s}=1.4m/s[/tex]
Therefore, the average velocity of the particle is, 1.4 meter/second.
What fact does Einstein's equation E = mc2 describe?
what happens when a colder drier air mass pushes against a warmer moister air mass
A ball with a horizontal speed of 1.25 m/s rolls off a bench 1.00 m above the floor. part a how long will it take the ball to hit the floor?
Answer:
The brainliest response is wrong. The correct answer is t= 0.45s.
Explanation:
5000 j of heat are added to a system. it does 3500 j of work on the surroundings. what is δe in j?
Final answer:
The change in internal energy (ΔE) of the system is 1500 J, calculated using the first law of thermodynamics with the given 5000 J of heat added to the system and 3500 J of work performed by the system.
Explanation:
When considering the first law of thermodynamics, the change in internal energy (ΔE) of a system is determined by the heat added to the system (Q) and the work done by the system on the surroundings (W). The relationship is given by the equation ΔE = Q - W.
In this scenario, the system receives 5000 J of heat and performs 3500 J of work on its surroundings. Applying the first law, we can calculate the change in internal energy:
ΔE = Q - W = 5000 J - 3500 J = 1500 J
Therefore, the change in the system's internal energy is 1500 J.
An electrical insulator has
A.electrons tightly bound to its atoms
B.more protons than electrons
C.electrons that freely move
D.negatively charged ions
An electrical insulator has" Electrons tightly bound to its atoms."The correct option is A.
An electrical insulator typically has electrons tightly bound to its atoms. This prevents the electrons from moving freely and thus inhibits the flow of electric current through the material. The lack of mobile electrons is a fundamental property that distinguishes insulators from conductors or semiconductors.
B. more protons than electrons: This option is not true because an electrical insulator can have an equal number of protons and electrons or even more electrons than protons. The balance between protons and electrons does not determine whether a material is an insulator or not.
C. Electrons that freely move: This option is not true for electrical insulators. Insulators are materials that do not conduct electricity easily, and one of the main reasons is that their electrons are tightly bound to their atoms. This lack of electron mobility prevents the easy flow of electric current.
D. Negatively charged ions: This option is not true for electrical insulators in general. Negatively charged ions refer to atoms or molecules that have gained extra electrons and carry a net negative charge. While some insulators may contain negatively charged ions, it is not a defining characteristic of electrical insulators as a whole. The primary characteristic of insulators is the inability to allow the free flow of electrons.
Therefore, The correct answer is option A.
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The being water held back by a dam possesses which type of energy? A) nuclear energy B) chemical energy C) potential energy D) kinetic energy
Answer: C. potential energy.
Explanation:
C. potential energy.
Water being held back by a dam will immediately rush through once the dam is removed. This is proof of the potential energy possessed by the water.
The being water held back by a dam possesses potential energy.
option C is the correct answer.
What is total energy ?
Total energy of any object under consideration is the sum of potential energy (P.E) and kinetic energy (K.E) and is constant throughout the motion. for example the ball is having maximum potential energy and zero kinetic energy at some finite height and as it is released its K.E increases and is maximum at ground position and P.E decreases and is zero at ground zero level position to have total energy same through out the motion of ball.
It should be noted that :
The energy possessed by a body by virtue of its motion is known as kinetic energy and the energy possessed by a body due to its position or configuration is known as potential energy.
Here, the water being held back by a dam possesses some potential height which implies that water is having Potential energy due to position of water placed away from ground level.
Therefore, water held back by a dam possesses potential energy.
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Which statement best represents scientific laws? (2 points) Scientific laws are statements that contain scientists' opinions of how the world works. Scientific laws are factual statements that explain why certain natural phenomena occur. Scientific laws are theories that have been tested, proven, and adopted as laws. Scientific laws are descriptions of observed phenomenon generally accepted as facts.
Final answer:
OPTION D.
The best representation of scientific laws is that they are factual descriptions of observed phenomena in nature, often expressed through mathematical equations and supported by extensive scientific evidence.
Explanation:
The statement that best represents scientific laws is D. Scientific laws are descriptions of observed phenomena generally accepted as facts. Unlike scientific theories, which provide explanations for phenomena, scientific laws describe the patterns we observe in nature and are often expressed concisely, typically through mathematical equations. A scientific law uses concise language to describe a generalized pattern in nature that is supported by scientific evidence and observed through repeated experiments. An example would be Newton's second law of motion, represented by the equation F = ma, which describes the relationship between force (F), mass (m), and acceleration (a).
Investigations were carried out in a science lab to explore the topic of chemical and physical changes.
Investigation A
Step 1. Add 5 tsp. salt to 100 ml warm water and stir until most or all of the salt is no longer visible.
Step 2. Heat the salt solution on a burner until only a white solid remains.
Investigation B
Step 1. Mix 10 tsp. white sugar into 100 ml water and stir until most or all of the sugar is no longer visible.
Step 2. Heat the sugar solution on a burner until the solution thickens and turns brown.
Answer:
To help Jaywon and all others out there, the answer is D
Explanation:
Jaywon and I both took the test and that is the answer.
You leave a light on in your house for 10 minutes (600 seconds). The lightbulb draws 0.5 amps at 120 volts. What is the power rating of the lightbulb and how much energy is consumed in the 10 minutes?
A) 60 watts and 0.1 joules
B) 60 watts and 36,000 joules
C) 240 watts and 0.4 joules
D) 2400 watts and 144,00 joules
> What is the power rating?
The power rating can actually be calculated by the product of current and volts. Therefore:
Power = I V
Given that current I = 0.5 A and V = 120 volts, therefore:
Power = (0.5 A) (120 V)
Power = 60 Watts
> How much energy is consumed in 10 minutes
Energy is simply the product of power and time in seconds, therefore:
Energy = Power * time
Energy = 60 Watts * (600 seconds)
Energy = 36,000 Joules
B
Ganymede is one of the many moons of Jupiter. It is nearly spherical in shape. It is larger than the planet Mercury and slightly smaller than the planet Mars. If it is so large compared with the bodies around it, why is it called a moon and not a planet?
Answer:
C. It moves in an orbit around Jupiter.
Explanation:
A pebble is thrown horizontally with an initial velocity of 12m/s to the right. How long does it take to fall 34 meters
Which steps are important when designing and conducting a scientific experiment?
Answer:
Identify the independent variable and address any confounndations variables
Explanation: