2 years ago

Not understanding this, please help out

Physics

1 answer:

allsm [11]2 years ago

3 0

Answer:

greater than

Explanation:

the answer is greater than

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Which state of matter has a definite volume but no definite shape

a_sh-v [17]

The answer is liquid.

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3 years ago

If the archerfish spits its water 30 degrees from the horizontal aiming at an insect 1.2 m above the surface of the water, how f

Burka [1]

Answer:

The speed is $v = 9.8 \ m/s$

Explanation:

From the question w are told that

The angle made is $\theta = 30^o$

The distance above the surface of the water is $h_{max} = 1.2 \ m$

The value of $g = 10 \ m/s^2$

The maximum height attained by the fish is mathematically evaluate as

$h_{max} = \frac{v^2 sin ^2 \theta }{2g }$

Making v which is the speed of the fish the subject of the formula

$v = \sqrt{ \frac{2gh_{max}}{ sin^2 \theta } }$

substituting values

$v = \sqrt{ \frac{2*10 *1.2 }{ [sin (30)]^2 } }$

$v = 9.8 \ m/s$

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2 years ago

What is the evidence proving that we're in the 6th mass extinction?

Sveta_85 [38]

Answer:

Global warming and climate change

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2 years ago

The friction that prevents an object from moving when a force is applied is ________ friction.

uranmaximum [27]

Static friction is what you are looking for.
Kinetic friction is the force exerted on an already moving object, slowing it down.

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2 years ago

What's the weight of a 30x30x50 cm body with the density of 1.8/cm cube?

grin007 [14]

Answer:

The weight of the body, W = 793.8 m/s²

Explanation:

Given,

The volume of the body, v = 45,000 cm³

The density of the body, ρ = 1.8 g/cm³

The mass of the body is given by the formula,

m = ρ x v

= 1.8 g/cm³ x 45,000 cm³

= 81,000 g

Hence, the mass of the body is m = 81 kg

The weight of the body,

W = m x g

= 81 kg x 9.8 m/s²

= 793.8 m/s²

Hence, the weight of the body, W = 793.8 m/s²

3 0

2 years ago