Answer:
(a) Energy will be 675 J
(B) charge will be 450 C
(C) Total number of particles will be
Explanation:
We have given that a flashlight uses 0.75 watts of power
So power P = 0.75 watt
Voltage is given as V = 1.5 volt
Time is given as t = 15 minutes
We know that 1 minute = 60 sec
So 15 minutes =
(A) We know that energy is given by
(b) We know that energy is also given by
So
Now we have given charge on each particle
So number of charge particle
Answer: Option (c) is the correct answer.
Explanation:
According to the second law of motion mass of an object times its acceleration is equal to the net force on the object.
Mathematically, F = ma
Generally, mass is expressed in kilograms (kg) and acceleration is expressed as follows.
acceleration =
=
=
Hence, S.I unit of acceleration is .
Therefore, units of force will be as follows.
F = ma
=
Thus, we can conclude that gives the correct units for force.
The dipole moment of a molecule and its boiling point are directly varied. If the dipole moment is large, the attraction between the positive and negative charges of a molecule is strong thus, requiring stronger forces to break them. Hence, they will have higher boiling points.
Answer:
Motion may be divided into three basic types — translational, rotational, and oscillatory.
Explanation: