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3 years ago

15

PLEASE HURRY IM BEING TIMED

1 answer:

spin [16.1K]3 years ago

8 0

A compound machine is one that consists of a couple simple machines working together, like a wheelbarrow contains the lever, axle, and wheel. While a simple machine would just be those individually, or anything else that can be used for applying a force.<span />

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How many significant digits are in the following measurements?<br> a. 1300 m

Fofino [41]

Answer:

For example, 1300 with a bar placed over the first 0 would have three significant figures (with the bar indicating that the number is precise to the nearest ten).

Explanation:

hope it helps :)

5 0

2 years ago

A Or b <br> Question in picture

Helen [10]

Answer:

the answer to the question is indeed B

5 0

3 years ago

Read 2 more answers

Give the 7 color harmonies

notsponge [240]

Answer:

Complementary colors.

Split complementary colors.

Analogous colors.

Triadic harmonies.

Tetradic harmonies.

Monochromatic harmonies.

Explanation:

7 0

2 years ago

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A satellite orbits the earth a distance of 2.50 × 10^7 m above the planet’s surface and takes 6.43 hours for each revolution abo

ASHA 777 [7]

Answer:

2.30 m /sec2

Explanation:

See the attached file;

7 0

3 years ago

A test car starts from rest on a horizontal circular track of 115-m radius and increases its speed at a uniform rate to reach 90

Wewaii [24]

Answer:

a= 3.49 m/s^2

Explanation:

magnitude of total acceleration = sqrt{radial acceleration^2+tangential acceleration^2}.

we know that tangential acceleration a_t= change in velocity /time taken

now 90 km/h = 25 m/s

a_t = 25/17 = 1.47 m/s^2.

radial acceleration a_r = v^2/r

v= a_t×t = 1.47×13 = 19.11 m/s

a_r = 19.11^2/115= 3.175

now,

$a= \sqrt{a_t^2+a_r^2}$

$a= \sqrt{1.47^2+3.175^2}$

a= 3.49 m/s^2

3 0

3 years ago