Answer:
True
Explanation:
Scientific laws are often written as expressions that contains variables and are laws that are binding themselves.
In science, laws are natural phenomenon that draws from careful observations that holds through following a series of detailed study. Within the range of assumed parameters, a law will always hold true.
Most laws in science are denoted using mathematical variables which helps to interpret them.
The variables shows the relationship between the different parts of the law.
For example, Newton's law of universal gravitation is expressed mathematically as shown below;
F = 
where G, m and r are all variables.
G is the universal gravitation constant
m is mass
r is the distance between them.
F is the gravitational force.
Most scientific laws are often expressed in this format.
Answer:
a) speed of water relative to shore = 0.85 m/s
b) speed of each canoe relative to the water = 2.05 m/s
Explanation:
Let the speed of the canoeists be 'v'
and,
the speed of stream relative to shore be 'u'
therefore,
for the canoeist padding upstream
u - v = - 1.2 m/s .............(1)
and,
for the canoeist padding downstream
u + v = 2.9 m/s .............(2)
on adding equation (1) and (2), we get
u - v = - 1.2
+ u + v = 2.9
===========
2u + 0 = 1.7
or
u = 0.85 m/s
substituting u in equation 2 we get
0.85 + v = 2.9
or
v = 2.05 m/s
Hence,
a) speed of water relative to shore = 0.85 m/s
b) speed of each canoe relative to the water = 2.05 m/s
You do 1 day is equal to 24 hours and in one hour there is 60 minutes so 24x60 is 1440 minutes in a day
Answer:
The lower the radiant energy, the lower frequency and the longer the wavelength.
Answer:
0 N
Explanation:
According to Newton's second law, the net force is the mass times the acceleration.
∑F = ma
At constant velocity, the acceleration is 0. So the net force is 0.
