All categories

3 years ago

Anyone know the answer to this?

Physics

1 answer:

KonstantinChe [14]3 years ago

3 0

Pull, aim, squeeze, spread

You might be interested in

Help me answer this

liberstina [14]

no thanks your a fat h/o/e

7 0

3 years ago

Cannonball a is launched across level ground with speed v₀ at an angle of 45. Cannonball b is launched from the same location wi

postnew [5]

Answer:

Cannonball b spends more time in the air than cannonball a.

Explanation:

Starting with the definition of acceleration, we have that:

$a=\frac{\Delta v}{\Delta t}\\\\\Delta t= \frac{\Delta v}{a}$

Since both cannonballs will stop in their maximum height, their final velocity is zero. And since the acceleration in the y-axis is g, we have:

$\Delta t= -\frac{v_{oy}}{g}$

Now, this time interval is from the moment the cannonballs are launched to the moment of their maximum height, exactly the half of their time in the air. So their flying time t_f is (the minus sign is ignored since we are interested in the magnitudes only):

$t_f=2\frac{v_{oy}}{g}$

Then, we can see that the time the cannonballs spend in the air is proportional to the vertical component of the initial velocity. And we know that:

$v_{oy}=v_o\sin\theta\\\\\implies t_f=2\frac{v_o\sin\theta}{g}$

Finally, since $\sin60\°=\frac{\sqrt{3} }{2}$ and $\sin45\°=\frac{\sqrt{2} }{2}$ , we can conclude that:

$t_{fa}=\sqrt{2}\frac{v_o }{g} \\\\t_{fb}=\sqrt{3}\frac{v_o }{g}\\\\\implies t_{fb}>t_{fa}$

In words, the cannonball b spends more time in the air than cannonball a.

5 0

3 years ago

Besides bones, the skeleton also contains connective tissues called the ???

yan [13]

Collagenous fibers - Purpose : Bind bones and other tissues to each other

Elastic Fibers : - Purpose : Allow organs like arteries and lungs to recoil

Reticular Fiber : - Purpose : Form a scaffolding for other cells

Hope this helps ! <3 :)

4 0

3 years ago

Read 2 more answers

What is the difference between washing of clothes at home and washing by dry cleaning at laundry

Arlecino [84]

The dry cleaning process uses chemicals to clean the clothes. It’s “dry” because it doesn't use water, as in normal wet laundering. Most laundries use chemicals to remove grease and stains from clothing.

8 0

3 years ago

According to Lenz's law, the current is induced in the closed conducting loop in such a direction that the magnetic field induce

VLD [36.1K]

Answer:

True

Explanation:

It is true that the real definition of lenz's law in magnetism is the current is induced in the closed conducting loop in such a direction that the magnetic field induced by this current opposes the change in the flux through the loop.

This means that induced current opposes the very cause that produces it.

4 0

3 years ago