Answer:
Mass is a base unit, acceleration is a derived unit calculated as a function of length and time which are both base units. Any unit definition that is a function of more basic units is considered a derived unit.
Answer:
Given that battery V = 12.0 V
Resistance R = 2.0 ohms
a ) current in the battery is I = V /R
= 12.0 V / 2.0
= 6.0 A
b ) charge transported in the circuit is q = i * t
= 6.0 A * 10 s
= 60 C
c ) Work done on the charge by the electric field is 0 ( there is no internal resistance )
d ) work done through the resistor is w = P * t
= ( V)^2 / R * t
= ( 12.0 V )^2 / 2 *10s
= 720J
e ) Total work done is equal to work done through the resistor
W_total = 720 J
f ) there is no internal resistance hence E = 0
To solve this problem we will apply the linear motion kinematic equations. For which the change of the initial and final velocity is described, as the product of twice the acceleration and the distance traveled. This equation is independent of time, so it is conducive to this exercise.
We will start converting the units.
The definition of the linear equation of kinematic motion states that
Here,
= Final velocity
= Initial velocity
a = Acceleration
x = Displacement
Rearranging to find the acceleration,
Replacing,
Now we know that speed is
Then the distance traveled, starting from the same previous equations would be
(a)
For an electromagnetic wave incident on a surface, the radiation pressure is given by (assuming all the radiation is absorbed)
where
I is the intensity
c is the speed of light
In this problem, ; substituting this value, we find the radiation pressure:
the force exerted on the Earth depends on the surface considered. Assuming that the sunlight hits half of the Earth's surface (the half illuminated by the Sun), we have to consider the area of a hemisphere, which is
where
is the Earth's radius. Substituting,
And so the force exerted by the sunlight is
(b)
The gravitational force exerted by the Sun on the Earth is
where
G is the gravitational constant
is the Sun's mass
is the Earth's mass
is the distance between the Sun and the Earth
Substituting,
And so, the radiation pressure force on Earth as a fraction of the sun's gravitational force on Earth is
Explanation:
In Asexual reproduction , part of parent plant is detached and grows to become a complete plant. In this process plant produced is generally identical to the its parent plant. It has ALL the same characteristics that the parent plant has. However, this is not true in case of sexual reproduction of plants.