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Scorpion4ik [409]
3 years ago
15

Four weather satellites are orbiting the Earth at a height of 825 kilometers. Some characteristics of the satellites are shown i

n the table below.
Upon which satellite does the Earth's gravity exert the greatest force?

Satellite Length (m) Altitude (km) Mass (kg)
A
5.5 825 692
B
9.8 825 610
C
4.4 825 840
D
5.6 825 903
Physics
1 answer:
ratelena [41]3 years ago
4 0

Answer:

D

Explanation:

The gravitational force between any two objects is affected by the masses of the objects and the distance between them. The greater the masses of the objects are, the stronger the gravitational force is.

Since all four of the satellites are the same distance from the Earth's surface, only their masses affect the strength of the gravitational force. At 903 kilograms, satellite D has the greatest mass, so the gravitational force pulling it toward the Earth is the greatest.

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A steel spur pinion has a module of 2 mm, 17 teeth cut on the 20° full-depth system, and a face width of 20 mm. At a speed of 16
erastovalidia [21]

Answer:

The value of bending stress on the pinion 35.38 M pa

Explanation:

Given data

m = 2 mm

Pressure angle \phi = 20°

No. of teeth T = 17

Face width (b) = 20 mm

Speed N = 1650 rpm

Power = 1200 W

Diameter of the pinion gear

D = m T

D = 2 × 17

D = 34 mm

Velocity of the pinion gear

V =\pi D( \frac{N}{60} )

V = 3.14 (0.034) \frac{(1650)}{60}

V = 2.93 \frac{m}{s}

Form factor for the pinion gear is

Y = 0.303

Now

K_{v} = \frac{6.1 +0.303}{6.1} = 1.049

Force on gear tooth

F = \frac{P}{V}

F = \frac{1200}{2.93}

F = 408.73 N

Now the bending stress is given by the formula

\sigma = \frac{K_{v} F}{m b y}

\sigma = \frac{(1.049)(408.73)}{(0.002)(0.02)(0.303)}

\sigma = 35.38 M pa

This is the value of bending stress on the pinion

8 0
3 years ago
HELP BRAINLYEST TO CORRECT ANSWER
kow [346]

Answer:

physical

Explanation:

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3 0
2 years ago
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A toaster draws 8 A of current with a voltage of 120 V. Which is the power used by the toaster?
dexar [7]
U=120 \text{ V}\\
I=8\text{ A}\\
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7 0
3 years ago
It takes Mars about ____ Earth years to orbit the Sun.
OlgaM077 [116]
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686.971 rounds to 687
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2 years ago
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Answer:

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