Describe a well-known hypothesis that was discarded because it was found to be untrue.earth-centered model of the universe. the
1 answer:
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Answer:
a.3.20m
b.0.45cm
Explanation:
a. Equation for minima is defined as:
Given ,
and
:
#Substitute our variable values in the minima equation to obtain :
#draw a triangle to find the relationship between and
.
#where
Hence the screen is 3.20m from the split.
b. To find the closest minima for green(the fourth min will give you the smallest distance)
#Like with a above, the minima equation will be defined as:
, where
given that it's the minima with the smallest distance.
#we then use to calculate
=4.5cm
Then from the equation subtract from
:
Hence, the distance is 0.45cm
As per the question the distance travelled by a car is 28.4 inch.
we are asked to determine the conversion factor in centimeter which when multiplied with 28.4 inch will give a unit.
we know that one inch =2.54 centimeter.
Hence 28.4 inch = 2.54 ×28.4 cm
=72.136 cm.
Now we have to determine the conversion factor .The multiplication factor is calculated as
[p is the multiplication factor.]
Hence the multiplication factor is 72.137 cm which will give unit conversion when multiplied with 28.4 inch.
Answer: 5166.347
Explanation:
The specific gravity of a solid (also called relative density) is the ratio of the density of that solid
to the density of water
(normally at
):
(1)
On the other hand, the density of the rock is calculated by:
(2)
Where:
is the mass of the rock
is the volume of the rock, since is spherical
Well, we already know the value of , but we need to find
in order to find the rock's specific gravity; and in order to do this, we firsly have to find
and then calculate
:
In the case of the mass of the rock, we can calclate it by the following equation:
(3)
Where:
is the weight if the rock in mars
is the acceleration due gravity in Mars
Isolating :
(4)
(5)
To find we can use the following equation of the potential gravitational energy
:
(6)
Where:
is the potential energy
is the height at which the rock has the mentioned potential energy
Isolating :
(7)
(8)
(9)
Substituting (9) in (5):
(10)
(11)
Substituting (11) in (2):
(12) At this point we only need to find the volume of the rock, knowing its diameter is
, hence its radius is
(13)
(14)
Substituting (14) in (12):
(15)
(16)
Substituting (16) in (1):
(17)
Finally we obtain the specific gravity of the rock:
Answer:
Part a)
Part b)
Part c)
Explanation:
Part a)
As we know that the velocity of the tip of the kicker's shoe is given as
also the length of the tip of the shoe from his hip joint is given as
now the angular speed is given as
Part b)
As we know that force on the ball is given as rate of change in momentum of the ball
so it is given as
so we have
Part c)
As we know that the formula of range is given as
now for maximum range we know