Answer:
a
b
Explanation:
From the question we are told that
The velocity of the river due east is 
The velocity of the boat due north is 
The width of the river is 
Generally the velocity of the boat relative to the shore
=> 
=>
Generally direction of the boat relative to the shore is mathematically represented as
=> ![\theta = tan^{-1}[ \frac{v}{v_1}]](https://tex.z-dn.net/?f=%5Ctheta%20%20%3D%20tan%5E%7B-1%7D%5B%20%5Cfrac%7Bv%7D%7Bv_1%7D%5D)
=> ![\theta = tan^{-1}[ \frac{1.5}{10}]](https://tex.z-dn.net/?f=%5Ctheta%20%20%3D%20tan%5E%7B-1%7D%5B%20%5Cfrac%7B1.5%7D%7B10%7D%5D)
=> 
Generally the distance covered by the boat in the direction of flow of the river before reaching the north shore is mathematically represented as
=> 
=>
Answer:
true ............................................
Answer:
Einstein's equivalence principle says that __________.
the effects of gravity are exactly equivalent to the effects of acceleration
Explanation:
The equivalence principle is one of the fundamental laws of physics, as enunciated by Einstein. It categorically states that the gravitational and inertial forces are of a similar nature. In physics, a gravitational acceleration is the acceleration of an object in a free fall within a space. The importance of Einstein's Equivalence Principle is explained by his theory of general relativity. This theory states that mass is the same, whether inertial or gravitational.
to get weight multiply Mass by 9.8
weight =9.8x15=147N
The phase of the Moon must be new, and the nodes of the Moon's orbit must be nearly aligned with Earth and the Sun.
