Answer:
85.556metres
Explanation:
Using pythagorean theorem
C²=A²+B²
we have c as the hypotenuse vector A thus:
93.8²=A²+38.4²
93.8²-38.4²=A²
8794.44-1474.56=A²
7319.88=A²
A=85.556
The plates push apart from eachother
Answer:
35.7kJ
Explanation:
we can calculate the amount of heat energy required , using this formula
Q = mcθ
where.
Q = heat energy (Joules, J)
m = mass of a substance (kg)
c = specific heat capacity (units )
θ = change in temperature (Celcius,C or Kelvin K)
Assume Specific heat capacity (c) of water =
mass =0.1 kg
Answer:
Explanation:
Given
Distance to the planet = 35 light years. So, the entire distance is: 2 * 35 = 70.
i.e time of travel of the ship.
For the observer on earth, the time is:
The required speed so that it does not take more than 70 years is then calculated using:
Substitute
So, we have:
Make v the subject of formula.
Square both sides
Cross Multiply
Divide both sides by
Divide through by
Make the subject
Inverse both sides
Take square root of both sides
Substitute values for and
Answer:
1.364 m
Explanation:
We are given that
Frequency,f=110 MHz=
We have to find the distance between the nodal planes of the magnetic field.
We know that
Wavelength,
Where c=
Using the formula
Distance between nodal planes of the magnetic field