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alisha [4.7K]
3 years ago
11

A good baseball pitcher can throw a baseball toward homeplate

Physics
1 answer:
Zolol [24]3 years ago
3 0

Answer:

14.44 revolutions

Explanation:

unit conversion:

85mile/hour = 85mile/hour * 5280ft/mile * 1/3600hours/second = 448800ft/hour = 124.67 ft/s

1800rev/min = 1800rev/min * 1/60min/seconds = 30 rev/s

The time it takes for the 85mph base ball to travel 60 ft is

t = s/v = 60 / 124.67 = 0.4813 seconds

By that time, the number of revolution it would make is:

r = 30 * 0.4813 = 14.44 revolutions

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Suppose a candle is burning, and wind is blowing on one side of the flame. Which principle explains why the flame bends toward t
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When a candle is burning and wind is blowing it on one side of the flame, which causes the flame to bend towards the wind is an example of Bernoulli’s principle. The principle explain that the higher the speed, the lower the pressure becomes. When you blow against one side of the flame, you are creating an area of low pressure. The relatively high-pressure air on the other side of the candle will rush over to fill the area of low pressure that causes the flame to be pushed in the direction of the blowing.

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Which two phases of the water cycle are repeated in this process? A. evaporation and precipitation B. evaporation and condensati
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It Is A Evaporation And Precipitation
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Following are the different layers of the sun’s atmosphere. Rank them based on the order in which a probe would encounter them w
blsea [12.9K]

Answer:

Going from earth to the sun a probe would encounter the next layers in order:

  • Corona
  • Transition Region
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  • Photosphere
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A brief description of them:

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Transition Region is between the corona and the chromosphere, it has an extension of about 100km

The chromosphere is between 400 km from the surface of the sun to 2100 km. In this layer the further you get away from the sun it gets hotter.

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6 0
3 years ago
When a bicycle coasts uphill, it moves slower and slower as it climbs. Why?
astra-53 [7]

Letter B because it is gaining more potential energy as it SLOWLY climbs up the hill.

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6 0
3 years ago
Read 2 more answers
Two coils have the same number of circular turns and carry the same current. Each rotates in a magnetic field acting perpendicul
ANEK [815]

Answer:

4.14 cm.

Explanation:

Given,

For Coil 1

radius of coil, r₁ = 5.6 cm

Magnetic field, B₁ = 0.24 T

For Coil 2

radius of coil, r₂ = ?

Magnetic field, B₂ = 0.44 T

Using formula of maximum torque

\tau_{max}= NIAB

Since both the coil experience same maximum torques

now,

NIA_1B_1 = NIA_2B_2

A_1B_1 = A_2B_2

r_1^2 B_1 = r_2^2 B_2

5.6^2\times 0.24= r_2^2\times 0.44

r_2 = 4.14\ cm

Radius of the coil 2 is equal to 4.14 cm.

4 0
4 years ago
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