3 years ago

What patterns are caused by the Earth, Sun, and Moon systems?

2 answers:

6 0

Earth's rotation and orbit and the Moon's orbit cause observable patterns (Day and night, seasons, phases of the Moon, tides).

MatroZZZ [7]3 years ago

5 0

Answer: Solor cycles and tings

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If igneous rock is placed under conditions of extreme heat and pressure, which type of rock will it become?

wariber [46]

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Gather your materials
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What is the maximum speed with which a 1200-kg car can round a turn of radius 90.0 m on a flat road if the coefficient of static

KATRIN_1 [288]

Answer:

78.6m/s

Explanation:

We know that frictional force also contributes to the centripetal force that keeps the car in circular motion in the turn

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F= mv²/r

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F= ugm

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To find maximum velocity v we say

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3 years ago

A vinyl record is played by rotating the record so that an approximately circular groove in the vinyl slides under a stylus. Bum

Fed [463]

Answer:

983.400345675 hits per second

Explanation:

Radius = 14.2 cm

Record turn rate = 33 rev/min

Bump separation = 0.499 mm

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Number of bumps in the groove = $\dfrac{0.89221231362}{0.499\times 10^{-3}}=1788.0006285\ bumps$

The rate which the bumps hit the stylus = $33\times\dfrac{1788.0006285}{60}=983.400345675$

The rate at which the bumps hit the stylus 983.400345675 hits per second

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3 years ago