3 years ago

The ratio of atoms in a compound is shown by the _________.

Physics

1 answer:

Aleksandr [31]3 years ago

7 0

Answer:

chemical equation

Explanation:

i said so

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A ball thrown straight up into the air is found to be moving at 6.79 m/s after falling 1.87 m below its release point. Find the

MaRussiya [10]

Answer:

3.07 m/s

Explanation:

We know that from kinematics equation

$v^{2}=u^{2}+2as$ and here, a=g where v is the final velocity, u is the initial velocity, a is acceleration, s is the distance moved, g is acceleration due to gravity

Making u the subject then

$u=\sqrt {v^{2}-2gs}$

Substituting v for 6.79 m/s, s for 1.87 m and g as 9.81 m/s2 then

$u=\sqrt {6.79^{2}-(2\times 9.81\times 1.87)}=3.068338313 m/s\approx 3.07 m/s$

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3 years ago

Which equation describes the sum of the vectors plotted below?

worty [1.4K]

Answer:

It's the third one in the picture ...

r = 3x - 2y

Explanation:

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Which trait is determined entirely by heredity ?

quester [9]

Shape of the nose is entirely hereditary, as genes have nothing to do with any of the other attributes.

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3 years ago

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The density of a hippo is approximately 1030kg/m^3,so it sinks to the bottom of the freshwater lakes and rivers. A 1500kg hippo

hram777 [196]

Answer:

14,700 N

Explanation:

The hyppo is standing completely submerged on the bottom of the lake. Since it is still, it means that the net force acting on it is zero: so, the weight of the hyppo (W), pushing downward, is balanced by the upward normal force, N:

$W-N=0$ (1)