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iragen [17]
3 years ago
13

Which is required for

Physics
1 answer:
vaieri [72.5K]3 years ago
5 0

Answer:

You need (B) Two substances in direct contact with one another to have conduction.

I hope this helped at all.

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Help me solve this please
Leto [7]
Since it's a projectile being launched the only force acting upon it is gravity, since the object is in free fall once it's launched

so to calculate time you'd utilize the general formula of
xf = xi + vxi(t) + \frac{1}{2} (a) {t}^{2}
and then solve using time and make it into the y axis, so change the x's to y's, which will change a to g.
since Vyi is always usually 0, you can drop that out of this equation so the formula to find time would be
t =  \sqrt{ \frac{2(y)}{g} }
So you'll plug in and it'll be
t =  \sqrt{ \frac{2( - 49m)}{ - 9.81 \frac{m}{s {}^{2} } } }
to find the maximum height you'll have to do some trigonometry to solve it.
To make it easier draw a triangle
put the 60° mark as shown in the picture.
Then you'll need to find the hypotenuse or horizontal to find the vertical
So the hypotenuse would be the 113m/s
so then you'll use
\ \sin( 60) = ( \frac{o}{h})

plug in the numbers
113( \ \sin (60) ) = o
now that you have the vertical

use the formula
{vf}^{2}  =  {vi}^{2}  + 2gd
solve for d which will give you the hypotenuse
d = { (-vertical \frac{m}{s} )}^{2}  \div 2( - 9.81 \frac{m}{ {s}^{2} } )
The "vertical" is what you found in the previous step.
Vf^2 is equal to 0 so you can just drop that number out since it's 0
then once you have that then youre not done yet
since you're on a cliff of 49 m you'll have to add 49m to the previous answer that you found d to find the maximum height.

I hope this helps!

6 0
3 years ago
With a bar magnet where are the lines of force closest together
attashe74 [19]
At the tip of either of the magnets poles
8 0
3 years ago
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What is the difference between speed and velocity ?
gizmo_the_mogwai [7]
Speed is the distance traveled
                             time
but velocity is the change in distance
                                 time
7 0
3 years ago
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How long does it take lewis hamilton travelling at 156 mph to cover 16 miles?
Paladinen [302]
It takes him
t = 16 miles / 156 mph = 0.1 hours

6 0
3 years ago
If a 2,000-kg car hits a tree with 500 n of force over a time of 0.5 seconds, what is the magnitude of its impulse?
Elden [556K]
Impulse = Force * time
Impulse = 500N *0.5 s =250 N*s
4 0
3 years ago
Read 2 more answers
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