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artcher [175]
3 years ago
6

How has technology changed farming?

Physics
1 answer:
umka2103 [35]3 years ago
6 0
The answer is B: it has made repetitive tasks easier
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1. The law of reflection states that the angle of _______ is equal to the angle ofreflection
Mnenie [13.5K]

Answer:

refraction

Explanation:

but this is easy so why

3 0
2 years ago
n a car lift used in a service station, compressed air exerts a force on a small piston that has a circular cross section of rad
Oksi-84 [34.3K]

Answer: 1477.78 N

Explanation:

Let's assume that the cross sectional area of the smaller piston be A1

let's also assume the cross sectional area of the larger piston be A2

We assume the force applied to the smaller piston be F1

We also assume the force applied to the larger piston be F2

we then use the formula

F1/A1 = F2/A2

From our question,

The radius of the smaller piston is 5 cm = 0.05 m

The radius of the larger piston is 15 cm = 0.15 m

The force of the larger piston is 13300 N

The force of the smaller piston is unknown = F

A1 = πr² = 3.142 * 0.05² = 0.007855 m²

A2 = πr² = 3.142 * 0.15² = 0.070695 m²

F1/0.007855 = 13300/0.070695

F1 = (13300 * 0.007855) / 0.070695

F1 = 104.4715 / 0.070695

F1 = 1477.78 N

Thus, the force the compressed air must exert is 1477.78 N

5 0
3 years ago
Nya has a cup of hot tea that she lets cool down for several minutes. What effect does cooling have on the tea?
Sveta_85 [38]
<span>An efect could be that sence the air us blowing on the hot tea that Nya has, an efect could be the temperatures mixing and the tea cooling down enough for Nya to drink</span>
3 0
2 years ago
Read 2 more answers
Half Time At 3:00 the hour hand and the minute hand of a clock point in directions that are 90.0
jenyasd209 [6]

Answer:

3 : 08 : 10.9

Explanation:

assuming a 12 hour clock

angular velocity of the hour hand is 2π/(3600(12)) rad/s

angular velocity of the minute hand is 2π/3600 rad/s

difference is 2π/3600 - 2π/(3600(12)) = 11(2π/(3600(12)) rad/s

45° = π/4 radians

This angle is covered in a time of

π/4 rad / 22π / (3600(12)) = 900(12) / 22 = 490.909090... s

or about 8 minutes 10.9 s

ANSWER 3:08:10.9

5 0
3 years ago
You find a weather balloon in your backyard. There's some kind of device attached to it. What is it?
skad [1K]
I believe the correct answer from the choices listed above is the third option. The device you found was a radiosonde. It is <span>a battery-powered telemetry instrument package carried into the atmosphere usually by a weather balloon that measures various atmospheric parameters. Hope this answers the question. Have a nice day.</span>
5 0
3 years ago
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