Answer:
D. Ramesh and Ravi are correct, but they are using different measurement scales.
\Huge{\underline{\textrm{Explanation}}}Explanation
Here, Ravi says that his body temperature is 100 degrees, but does not mention that whether it is 100 degrees Celsius or 100 degrees Fahrenheit. When the temperature of a human body is more than 100.4 degree Fahrenheit (38°C), or near to it, the person is considered to have fever.
The boiling point of water is 100 degrees Celsius and not 100 degrees Fahrenheit.
Thus, they both are using different measurement scales.
Answer:
Options 1 and 5 are correct
Explanation:
Magnetic field lines can never cross, the field is unique at any point in space. Magnetic field lines are continuous, forming closed loops without beginning or end. They go from the north pole to the south pole.
Magnetic field lines form closed loops but do not intersect.
Electric field lines originate at the positive charges and terminate at the negative charges. They move in a straight line and are parallel. Electric field lines neither form closed loops nor intersect.
Since, magnetic field lines form closed loops and move from North to South pole, they come out of north poles outside the magnet and into north poles inside the magnet, they also go into south poles outside the magnet and out of south poles inside the magnet.
Answer:
Final velocity of white ball is 0m/s
Final velocity of black ball is 3.09m/s
Explanation:
An elastic collision is one that conserves internal kinetic energy
An internal kinetic energy is the sum of kinetic energies of objects in the system
Initial kinetic energy of white ball is Vi1 = 3.09m/s
Final kinetic energy of white ball is Vf1 = ?
Initial kinetic energy of black ball is Vi2 = 0m/s
Final kinetic energy of black ball is Vf2 = ?
m1 = 1.49kg mass of white ball
m2 = 1.49kg mass of black ball
The formula to calculate internal kinetic energy is
1/2m1Vf1^2 + 1/2m2Vf2^2 = 1/2m1Vi1^2
Solving the equation
1.Vf1 = (m1 - m2)Vi1/m1+m2
Vf1 = (1.49-1.49)*3.09/1.49+1/49
Vf1 = 0m/s
2. Vf2 = 2m1Vi1/m1+m2
Vf2 = 2*1.49*3.09/1.49+1.49
Vf2 = 3.09m/s
N:B following the general principle of collision when 2 bodies of same masses collide in elastic collision they exchange velocities.
Well, there you have a very important principle wrapped up in that question.
There's actually no such thing as a real, actual amount of potential energy.
There's only potential <em><u>relative to some place</u></em>. It's the work you have to do
to lift the object from that reference place to wherever it is now. It's also
the kinetic energy the object would have if it fell down to the reference place
from where it is now.
Here's the formula for potential energy: PE = (mass) x (gravity) x (<em><u>height</u></em><u>)</u> .
So naturally, when you use that formula, you need to decide "height above what ?"
If you're reading a book while you're flying in a passenger jet, the book's PE is
(M x G x 0 meters) relative to your lap, (M x G x 1 meter) relative to the floor of the
plane, (M x G x 10,000 meters) relative to the ground, and maybe (M x G x 25,000 meters)
relative to the bottom of the ocean.
Let's say that gravity is 9.8 m/s² .
Then a 4kg block sitting on the floor has (39.2 x 0 meters) PE relative to the floor
it's sitting on, also (39.2 x 3 meters) relative to the floor that's one floor downstairs,
also (39.2 x 30 meters) relative to 10 floors downstairs, and if it's on the top floor of
the Amoco/Aon Center in Chicago, maybe (39.2 x 345 meters) relative to the floor
in the coffee shop that's off the lobby on the ground floor.
Answer:
cell wall and cell membrane
