Given a Projectile motion
The total time of flight T=6s
a. Time to reach maximum height=?
The time to reach maximum height is half of the time of flight given,
Then,
t=T/2
t=6/2
t=3s
The time to reach maximum height is 3sec.
b. If the horizontal initial velocity is 8m/s
Ux=8m/s
The range of a projectile is given as.
R=Ux•T
Given that T=6s and Ux, =8m/s
R=Ux•T
R=8×6
R=48m.
The range of the projectile is 48m.
c. The horizontal acceleration is zero.
This is due to no horizontal force acting on the projectile. So, there is no horizontal acceleration. That proposition of no horizontal acceleration is approximately correct in our world.
d. The vertical acceleration is g=9.81m/s²
The Gravity is the downward force upon a projectile that influences its vertical motion.
So the vertical acceleration is 9.81m/s²
The heat transferred by conduction per hour if temperature difference between the inner body and the skin is ∆ = 2°C is 18 Joule/ hr.
<h3>What is heat conduction?</h3>
Heat conduction is the method of transfer of heat by the direct contact of the two or more solid bodies.
Given is the thickness of tissue x = 3cm =-0.03m, Area of conduction A = 1.5 m², Change in temperature of skin ΔT =2°C, and coefficient of thermal for tissue without blood is k = 18 × 10⁻² Cal /m-hr- °C
The conduction heat rate in hr is
Q =kAΔT /x
Q =18 × 10⁻² x 1.5 x 2 /0.03
Q =18 Joule / hr
Thus, the heat transferred by conduction per hour, if temperature difference between the inner body and the skin is ∆ = 2°C is 18 Joule/ hr.
Learn more about conduction.
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Answer:
Gravity separation is an industrial method of separating two components, either a suspension, or dry granular mixture where separating the components with gravity is sufficiently practical: i.e. the components of the mixture have different specific materials and Magnetic separations take advantages of natural magnetic properties between minerals in feed. The separation is between economic ore constituents, noneconomic contaminants and gangue. and saw dust can be separated by gravity separation method. The process can be used for separating insoluble substances which are heavier than liquid by allowing them to settle down on their own due to gravity. The mixture of sand and iron can be separated from each other by using a magnet. Iron gets attracted towards a magnet leaving behind the sand.
<h2>
Please mark me as brainliest by clicking on the crown at the bottom of my answer</h2>
Answer:
In my knowledge
Option B. Lava flowed from the moon
and I am pretty sure cause I have read about it and option B is the conclusion I came with lol :D
Since you did not include the choices, I am going to teach you the order of all the groups from letf to right on the periodic table.
The order from let to right is 1, 2, 3, 4, ...., 13, 14, 15, 16, 17, 18.
Group Family
1 Alakalyne metals is the group at the left end.
2 alkakalyne earth metals, is the next group from left to right
3 to 12 transition metals
3 scandium family
4 titanium family
5 vanadium family
6 chromium family
7 manganese family
8 iron family
9 cobalt family
10 niquel family
11 copper family (aka coinage metals)
12 zinc family (aka volatile metals)
13 boron family, aka icosagens
14 carbon family, aka crystallogens
15 nitrogen family, aka pnictogens
16 oxygen family, aka chalcogens
17 halogens
18 noble gases: is the group at the right end.