The potential difference needed to make a current of 5 A flow through a material with resistance of 2 ohms is 10 volts.
Potential difference also known as voltage is defined as the work required per unit charge to move a test charge between two points.
The SI unit of potential difference is Volt (V)According to the ohms law voltage is directly proportional to the current, i.e. voltage is equal to the product of current and resistance.
Mathematically, V = IR
Current = 5 A
Resistance = 2 ohms
Voltage = I *R
V = 2 * 5
V = 10 volts
The potential difference is needed to make a current of 5 a flow through a material with resistance of 2 ohms is 10 volts.
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An egg is dropped from a treehouse and takes 1.51.51, point, 5 seconds to reach the ground. We can ignore air resistance.
What is the egg's displacement?
An egg is dropped from a treehouse and takes 5 seconds to reach the ground. We can ignore air resistance. The egg's displacement will be 122.5 m
The branch of physics that defines motion with respect to space and time, ignoring the cause of that motion, is known as kinematics. Kinematics equations are a set of equations that can derive an unknown aspect of a body’s motion if the other aspects are provided.
Using equation of kinematics
v = u - g*t
v = - 9.8 * 5 = 49 m/s
2as = [tex]v^{2} - u^{2}[/tex]
2 * (-g) * s = [tex]v^{2} - u^{2}[/tex]
2 * 9.8 * s = [tex](49)^{2}[/tex] - 0
s = 122.5 m
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how is the period of time during which the marble is being flicked completely different from the rest of the trip?
The marble is being flicked during a very short period of time compared to the rest of the trip. The marble is accelerating during this time, so its velocity is changing. The rest of the trip, the marble is not accelerating, so its velocity is constant
What is the marble's velocity?
The marble's velocity might vary from 3 m/s to 9 m/s.The length and speed of a marble's motion are measured after that, using the formula Speed = Distance / Time to determine their speed.The marble travels at its fastest speed just before it lands because that is when its potential energy changes the most, while other factors have lost the least energy up to that point.To learn more about marble velocity, follow the link https://brainly.com/question/16978117
.
How would sound be affected if there was no matter to vibrate?
A) The sound would have a higher pitch.
B) There would be no sound.
C) The sound would be louder.
D)The sound would have a lower pitch.
(HELPPPP ASAP!!)
Sound would be affected if there was no matter to vibrate, and there would be no sound.
option B is the correct answer.
What is mechanical wave?
Mechanical wave is a type of wave that requires material medium for its propagation.
That is, for mechanical wave to be effective, there must be a material medium for its propagation.
The examples of mechanical wave include the following;
water waves, sound waves, and seismic waves.The above mentioned examples of mechanical wave requires material medium for their propagation.
Thus, a sound wave which is an example of mechanical wave will be affected in the absence of material medium for their propagation.
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The 75 kg girl is standing on a platform 15 m above the top of the launcher.
Calculate the gravitational potential energy of the girl relative to the top of the launcher. Show your calculations and include units in
your answer.
The girl steps off the platform and lands on the launcher.
Answer:
11250
Explanation:
E=mgh=75*10*15=11250