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3 years ago

10

A bullet is fired at an angle θ above the horizontal with an initial velocity of 800 m/s from the top of an 80 m high tower. Wha

t value of θ will give the maximum horizontal range?

1 answer:

Irina-Kira [14]3 years ago

6 0

Answer:

pahingi po ng pic pls para masagutang kopo iyan

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In February 1955, a paratrooper fell 1200 ft from an

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Answer:

$s=1.1107\ m$ is the minimum depth of snow for survivable stopping.

Explanation:

Given:

terminal velocity of fall, $u=56\ m.s^{-1}$

mass of the paratrooper, $m=85\ kg$

force on the paratrooper by the ice to stop him, $F=1.2\times 10^5\ N$

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$a=\frac{120000}{85}$

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Now, using equation of motion:

$v^2=u^2+2a.s$ ....................(1)

where:

v = final velocity of the body after stopping

u = initial velocity of the body just before hitting the snow

a = acceleration of the body in the snow

s = distance through in the snow

Putting respective values in eq. (1)

$0^2=56^2+2\times (-1411.765)\times s$

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The pressure at the bottom of a full barrel of water is Poriginal . Determine what happens to the pressure when the radius or he

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Answer:

a) P' = P_original, b) P ’= P_original + ρ g Δh

Explanation:

The expression for nanometric pressure is

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where ρ is the density of the liquid and h is the height

a) we change the radius of the barrel, but keeping the same height

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b) We change the barrel height

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In this case, the pressure changes due to the new height,

*if it is higher than the initial one, the pressure increases

*if the height is less than the initial one, the pressure is less

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