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3 years ago

An airplane flies with a velocity of 750. kilometers

Physics

2 answers:

ra1l [238]3 years ago

6 0

B. 650 km/h is the correct answer

viktelen [127]3 years ago

5 0

Answer:

650 km/hr

Explanation:

Draw a right triangle from (0.0) (Point A) down 30 degrees and to the right for a length of 750 (Point B). Then draw a line from B up to the x axis to make a right angle (Point C). Use the cosine function to find line AC, the vector portion of AB that lies of the x (East) axis. Cosine(30)= Adjacent/Hypotenuse.

Cos(30) = AC/750

750*(cos(30)) = AC

AC = 649.5 km/hr

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lozanna [386]

Answer:

Explanation:

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3 years ago

What type of reaction feels cold to the touch? A. Endothermic, because energy is being released into the surroundings B. Endothe

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Answer:

D. Exothermic, because energy is being absorbed from the surroundings

Explanation:

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3 years ago

Read 2 more answers

94. The diagram shows the orbit of a satellite

Valentin [98]

Answer:

7.65x10^3 m/s

Explanation:

The computation of the satellite's orbital speed is shown below:

Given that

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Gravitational constant, G = 6.67 × 10^-11 N·m^2/kg

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Based on the above information

the satellite's orbital speed is

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4 0

3 years ago

A diver makes 1.0 revolutions on the way from a 9.2-m-high platform to the water. Assuming zero initial vertical velocity, find

____ [38]

Answer:

Average angular velocity ≈ 4.59 rad/s

Explanation:

Using the equation of motion,

H = ut + (1/2)t² ............................ equation 1.

Where H= height, u = initial velocity(m/s), g = acceleration due to gravity(m/s²), t = time(s) u= 0 ∴ ut =0

H =(1/2)gt².................................... equation 2.

making t² the subject of the relation in equation 2,

∴ t² = 2H/g

Where H = 9.2 m, g= 9.8 m/s

∴ t² = ( 2×9.2)/9.8

t = √(2 × 9.2/9.8) = √(18.4/9.8)

t = 1.37 s.

The average angular velocity = θ/t

Where θ = is the number of revolution that the diver makes, t = time

θ = 1 rev.

Since 1 rev = 2π (rad)

t = 1.37 s

Average angular velocity = 2π/t

π = 3.143

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3 years ago

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Mumz [18]

Answer:

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Explanation:

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