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4 years ago

What would happen if earth gravity suddenly disappeared?

2 answers:

8 0

<h2>Gravity is the glue that holds the universe together. Gravity is assisting us with all of the actions and things that we do as human beings. Without gravity, there would be no galaxies, there would be no stars, and there would be no planets or humans. If gravity suddenly turned off, we would fly off into space and we would die.</h2>

natita [175]4 years ago

7 0

"You couldn't hear anything and it'd be hard to breathe.

The Earth likely couldn't survive without it." -Science Teacher

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The height of a helicopter above the ground is given by h = 3.25t3, where h is in meters and t is in seconds. At t = 2.25 s, the

blondinia [14]

Answer:

In 2.748 sec the mailbag reached the ground

Explanation:

We have given height from the ground $h=3.25t^3$

At t =2.25 sec helicopter releases a small mailbag so at t = 2.25 sec height from the ground $h=3.25t^3=3.25\times 2.25^3=37.01m$

When the mail box is drooped its initial velocity would zero so u = 0 m/sec

Acceleration due to gravity $g=9.8m/sec^2$

According to third law of motion $h=ut+\frac{1}{2}gt^2$

$37.01=0\times t+\frac{1}{2}\times 9.8\times t^2$

$t^2=7.553$

t = 2.748 sec

4 0

3 years ago

What is the moment of inertia of a 2.0 kg, 20-cm-diameter disk for rotation about an axis (a) through the center, and (b) throug

FinnZ [79.3K]

Answer:

(a) I=0.01 kg.m²

(b) I=0.03 kg.m²

Explanation:

Given data

Mass of disk M=2.0 kg

Diameter of disk d=20 cm=0.20 m

To Find

(a) Moment of inertia through the center of disk

(b) Moment of inertia through the edge of disk

Solution

For (a) Moment of inertia through the center of disk

Using the equation of moment of Inertia

$I=\frac{1}{2}MR^{2}\\ I=\frac{1}{2}(2.0kg)(0.20m/2)^{2}\\ I=0.01 kg m^{2}$

For (b) Moment of inertia through the edge of disk

We can apply parallel axis theorem for calculating moment of inertia

$I=(1/2)MR^{2}+MD\\ Here\\D=R\\I=(1/2)(2.0kg)(0.20m/2)^{2}+(2.0kg)(0.20m/2)^{2}\\ I=0.03kgm^{2}$

8 0

4 years ago

What are possible units for impulse? Check all that apply.

Neporo4naja [7]

Units of impulse: N • s, kg • meters per second

Explanation:

Impulse is defined in two ways:

Impulse is defined as the product between the force exerted in a collision and the duration of the collision:

$I=F\Delta t$

where

F is the force

$\Delta t$ is the time interval

Since the force is measured in Newtons (N) and the time is measured in seconds (s), the units for the impulse are

$[I] = [N][s]$

So,

N • s

Impulse is also defined as the change in momentum experienced by an object:

$I=\Delta p$

where the change in momentum is given by

$\Delta p = m\Delta v$

where m is the mass and $\Delta v$ is the change in velocity.

The mass is measured in kilograms (kg) while the change in velocity is measured in metres per second (m/s), therefore the units for impulse are

$[I]=[kg][m/s]$

so,

kg • meters per second

Learn more about impulse:

brainly.com/question/9484203

#LearnwithBrainly

6 0

3 years ago

Read 2 more answers

Need help on this on 6 and 7

Paladinen [302]

6) the last one
7) black t-shirt

7 0

4 years ago

A Hertzsprung-Russel diagram is shown. Which stars are best characterized as having high temperatures and low luminosities?

guapka [62]

White dwarfs

<u>Explanation:</u>

Hertzsprung-Russel graph is a 2-dimensional graph, plotting star’s luminosity against temperature they emit.

White dwarfs are the star exhibiting high temperatures and low luminosities. These stars are extremely dense and mass comparable to that of the sun.

The main cause of low luminosities in the absence of fusion reaction inside the core of the star. Faint luminosity is provided by the thermal energy of the star. They are considered to be in the final stage of evolution having masses in the range of 10 solar mass (hence not enough to form a star)

6 0

3 years ago

Read 2 more answers