Covalent bonds form when electrons are shared between atoms and are attracted by the nuclei of both atoms. In pure covalent bonds, the electrons are shared equally. In polar covalent bonds, the electrons are shared unequally, as one atom exerts a stronger force of attraction on the electrons than the other.
Answer:
c. Throw the items away from the spaceship.
Explanation:
By the Principle of action and reaction yu can get back to your spacecraft throwing the items away from the spaceship.
With a ruler and a calculator
Answer:
Let the weight of the person be W and be located at a distance 'a' from the left scale as shown in the figure
Since the body is in equilibrium we can use equations of statics to analyse the problem.
Taking Sum of Moments about A we have

Taking Sum of Moments about B we have

Solving the above 2 equations for W and 'a' we get

Answer:

Explanation:
we can solve this problem by using the first law of thermodynamics.

Q= heat added
U= internal energy
W= work done by system

<u>
(1)</u>


now
From equation 1


