Answer:
Explanation:
The force of the lake bottom on the boat = force the boat exerts on the bottom
force the boat exerts on the bottom = weight of the boat - buoyant force on the boat
so
The force of the lake bottom on the boat = weight of the boat - buoyant force on the boat
So
The force of the lake bottom on the boat will be less than its weight .
Answer:
The origin of the leap year are based on the calendar of julian related with gregorian calendar, which are basically introduced by the Julius caesar in the 45 BC. So, the leap year is the year which contain one additional day in very fourth year.
It is necessary because in the even number of the days the earth does not revolving around sun. So, the situation of severe accident can arise if the days of earth's rotation is in a whole number for earth rotates around sun.
Options:
a) An arrow of magnitude 852.6 N points perpendicular to the slope of the hill.
b) An arrow of magnitude 6.50 N points down the slope of the hill.
c) An arrow of magnitude 78.5 N points down the slope of the hill.
d) An arrow of magnitude 852.6 N points straight down.
Answer:
d) An arrow of magnitude 852.6 N points straight down.
Explanation:
The total mass of the two riders, m = 87.0 kg
The free body diagrams of the situation described are drawn and contained in the files attached to this solution.
Note that the weight of the toboggan will act directly downwards.
Therefore, the weight of the toboggan, W = mg
W = 87 * 9.8
W = 852.6 N
Since the arrow representing the weight of the toboggan points straight down, the correct answer is that an arrow of magnitude 852.6 N points straight down.
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Answer:
0.407 c
Explanation:
L₀ = Actual length of the spaceship lilac = 717 m
L = length of spaceship observed = 655 m
v = speed of lilac relative to earth
Using the equation
Inserting the values
v = 0.407 c