<span>In this situation when using newton's third law, the floor is very rigid and thus when we fall the floor applies
the same amount of force on us with which we were falling on it. The rigidness of the concrete floor makes it difficult for it to absorb some of our force. On the other hand sand is not rigid on impact sine it changes its shape while it absorbs a
large amount of our falling force and a small fraction of this
force is applied on is. That is why we don't get hurt</span>
<span>If the wire is then wound into a coil, the magnetic field is greatly intensified producing a static magnetic field around itself forming the shape of a bar magnet giving a distinct North and South pole.
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Answer:
Since opposite charges attract each other, the negatively charged electrons are attracted to the positively charged protons. ... Together, all of the electrons of an atom create a negative chargethat balances the positive charge of the protons in the atomic nucleus.
Explanation:
Answer:
Explanation:
a) According to ohm's law
V = IR
V is the supply voltage
R is the resistance
I is the current
Given Resistance = 200ohms
Voltage = 20V
I = V/R
I = 20/200
I = 0.1Amperes
b) Using the ohm's law formula
V= IR
Where voltage = 12volts
Current I = 3A
Resistance R = V/I
R = 12/3
R = 4ohms
c) Power generated by the battery is expressed as P = IV
I = P/V
Given Power = 2Watts
V = 1.5volts
I = 2/1.5
I = 1.33A
d) similarly, power = current I × voltage V
V = P/I
Given P = 90watts
I = 4.5A
V = 90/4.5
V = 20volts
e) Given power = 1.5kW = 1500watts
Voltage = 300volts
I = P/V
I = 1500/300
I = 5A
Answer: The correct answer is option (C).
Explanation:
Law of reflection:
- Angle of incident is equal to angle of reflection;∠i=∠r
- Incident ray, reflected ray and normal to the reflecting interface at the point of incidence all lie in same plane.
When light ray from candle strikes a mirror at an angle of 40° with the normal, then the angle at which ray reflected back will 40°.
