2 years ago

List of three questions that you are good at science questions.

Physics

2 answers:

Klio2033 [76]2 years ago

7 0

Answer:

cycles, graphing, precise measurementation

Explanation:

vampirchik [111]2 years ago

5 0

Answer:

Explanation:

Explain the reason why difffusion happens quickly at high temperatures?

Naming simple compounds.

Explaining the musculoskeletal system.

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A ____ is another name for a group of elements with similar properties

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The answer is “Family”

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2 years ago

Mechanics: design a decision tree to determine if an object is experiencing an unbalanced force, and using newton's laws of moti

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Answer:

The decision designer is a step-wise process

Explanation:

A typical decision tree will be like this:

Are there any forces?

YES - then calculate the resultant forces NO - Then no calculations are needed

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IF YES - Then calculations can be done.

Resolve the forces to find the resultant of the forces in the question.

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3 years ago

A 900-N lawn roller is to be pulled over a 5-cm (high) curb. Radius of roller is 25 cm. What minimum pulling force is needed if

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2 years ago

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3 years ago

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The time, t, required to drive a fixed distance varies inversely as the speed, r. It takes 3 hr at a speed of 14 km/h to driv

kenny6666 [7]

Answer:

time taken with speed 23 km/h will be 1.8 hours or 1 hour 48 minutes

Explanation:

Given:

Time is inversely proportional to the speed

mathematically,

t ∝ (1/r)

let the proportionality constant be 'k'

thus,

t = k/r

therefore, for case 1

time = 3 hr

speed = 14 km/hr

3 = k/14

also,

for case 2

let the time be = t

r = 23 km/h

thus,

we have

t = k/23

on dividing equation 2 by 1

we get

$\frac{t}{3}=\frac{k/23}{k/14}$

$t=\frac{14\times3}{23}$

t = 1.8 hr = or 1 hour 48 minutes ( 0.8 hours × 60 minutes/hour = 48 minutes)

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2 years ago