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3 years ago

15

which of these is a chemical change? a. Gas is burned b. ice melts c. metal foil is heated d. paper is shredded

2 answers:

elena-s [515]3 years ago

8 0

A. The Gas being burnt

Sergio [31]3 years ago

6 0

A is the answer

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12. A 20-newton cart is lifted up 0.40 meters to the top of a ramp.

Hitman42 [59]

Answer:

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Explanation:

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3 years ago

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Tanzania [10]

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3 years ago

When compared to strong nuclear force gravitational force is

pickupchik [31]

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Gravitational force is substantially weaker than the strong nuclear force.

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4 years ago

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What is another unit for momentum besides kg-m/s?<br> a. N<br> b. N-s<br> c. N-s2<br> d. N/s

lara [203]

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3 years ago

what is the orbital speed for a satellite 3.5 x 10^8m from the center of mars? Mars mass is 6.4 x 10^23 kg

adell [148]

Answer:

v = 349.23 m/s

Explanation:

It is required to find the orbital speed for a satellite $3.5\times 10^8\ m$ from the center of mass.

Mass of Mars, $M=6.4\times 10^{23}\ kg$

The orbital speed for a satellite is given by the formula as follows :

$v=\sqrt{\dfrac{GM}{r}} \\\\v=\sqrt{\dfrac{6.67\times 10^{-11}\times 6.4\times 10^{23}}{3.5\times 10^8}} \\\\v=349.23\ m/s$

So, the orbital speed for a satellite is 349.23 m/s.

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3 years ago