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3 years ago

Describe two ways in which heat is transported in the biosphere

Physics

1 answer:

Trava [24]3 years ago

7 0

Answer and Explanation:

Warm air tends to rise, and cold air tends to fall, consequently, the hot air of the equator rises and at the same time the cold air of the poles descends to the ground. This generates wind currents that displace heat throughout the atmosphere.

The movement of water creates ocean currents that transport energy heat up the biosphere. Surface ocean currents heat or cool the air above

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Describe the point at which the kinetic energy of the pendulum is the highest

Arlecino [84]

The highest point of the pendulums swing is when the potential energy is at its highest and the kinetic energy is at its lowest.

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3 years ago

In AA&E storage facilities, why must drainage structures be secured if they cross the fence line and meet certain size requi

Likurg_2 [28]

Answer:

As an additional security measure in an AA&E storage facilities, securing drainage structures must be considered if their cross section is greater than 96 inches and any dimension is greater than 6 inches, they must be barred and welded at the intersections to prevent any human from crawling into the area.

Explanation:

U.S. national security relys on ensuring DoD sensitive or classified assets such as classified material, arms, ammunition, and explosives (AA&E) and nuclear weapons, in properly safeguard facilites and storage containers, voiding DoD assets loss or compromise and additional to supplemental intrusion detection systems and guard patrols, security lighting, communications, fences and clear zones, drainage structures, key control, and other security measures required to protect AA&E.

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3 years ago

The

guapka [62]

The NUCLEUS is the center of the atom. it contains protons and NEUTRONS

protons have a POSITIVE charge

neutrons have a NEUTRAL charge

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6 0

3 years ago

Water flows through a cylindrical pipe of varying cross-section. The velocity is 3.0 m/s at a point where the pipe diameter is 1

Setler79 [48]

Answer:

The flow rate is $R =2.357 *10^{-4} \ m^3/s$

Explanation:

From the question we are told that

The velocity is $v = 3.0 \ m/s$

The diameter of the pipe is $d = 1.0 \ cm = 0.01 \ m$

The radius of the pipe is mathematically represented as

$r = \frac{d}{2}$

substituting values

$r = \frac{0.01}{2}$

$r = 0.005 \ m$

The flow rate is mathematically represented as

$R = v * A$

Where is the cross-sectional area of the pipe which is mathematically evaluated as

$A = \pi r^2$

substituting values

$A = 3.142 * (0.005)^2$

$A = 7.855 * 10^{-5} \ m^2$

$R = 3.0 * 7.855 *10^{-5}$

$R = 2.357*10^{-4} \ m^3 /s$

8 0

2 years ago

Modern wind turbines are larger than they appear, and despite their apparently lazy motion, the speed of the blades tips can be

Crank

Answer:

(a) v = 65.35 m/s

(b) ac = 82.16 m/s²

Explanation:

Kinematic of the blades of the wind turbine

The blades of the wind turbine describe circular motion and the formulas that apply to this movement are as follows:

v = ω * R Formula (1)

Where:

v : tangential velocity (m/s)

ω : angular velocity (rad/s)

R : radius of the particle path (m)

The velocity vector is tangent at each point to the trajectory and its direction is that of movement. This implies that the movement has centripetal acceleration (ac):

ac = ω²* R Formula (1)

ac : centripetal acceleration (m/s²)

Data:

ω= 12 rpm = 12 rev/min

1 rev = 2π rad

1 min = 60 s

ω= 12 rev/min = 12 (2π rad)/(60 s)

ω = 1.257 rad/s

R = 52 m

(a)Tangential velocity at the tip of a blade (v)

We apply the formula (1)

v = ω* R

v = ( 1.257)* (52) = 65.35 m/s

(a) Centripetal acceleration at the tip of a blade (ac)

We apply the formula (2)

ac = ω²*R

ac = ( 1.257)²* (52) = 82.16 m/s²

6 0

2 years ago