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Sati [7]
3 years ago
8

You have a sealed glass jar full of air. If you put it in the freezer, what happens to the gas pressure in the jar?

Physics
1 answer:
xz_007 [3.2K]3 years ago
8 0
The pressure inside decreases
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A plank of length L and mass M hangs from an axle passing through one end. The other end is allowed to hang down so that it just
galben [10]

Answer:

v = ((M(√2gH)/3m)

Explanation:

Initial Moment of Inertia= Moment of Inertia of Rod

I = (ML²)/3

Linear Velocity of moveable end of the rod, just before collision is given by = v = (√2gH)/L

Initial Angular Momentum, about the point of the suspension:

Li= Iw = {(ML²)/3} . {(√2gH)/L} = {ML(√2gH)}/3

Final Angular Momentum = Li = mvl, where 'v' is the speed of the mass 'm' after the collision

Since the collision is elastic, all momentum will be conserved, which means

Initial Angular Momemtum = Final Angular Momentum

{ML(√2gH)}/3 = mvL

solving for v = {(M)/3m} . {(√2gH)/L}

6 0
3 years ago
Alice and Tom dive from an overhang into the lake below. Tom simply drops straight down from the edge, but Alice takes a running
alina1380 [7]

Answer:

D, ---- Not sure

Explanation:

No air resistance

4 0
4 years ago
Scott cuts a one meter long wire into five equal parts. What is the length of each part of the wire? (2 points) 0.02 centimeters
kompoz [17]
20 centimeters. 100 centimeters in a meter. 100/5= 20
4 0
3 years ago
Read 2 more answers
Sound Waves can be used to measure ocean depth. This done by sending a sound wave to the floor of the ocean and recording the ti
vazorg [7]
When the sound wave returns to the machine, you can measure
how long it took to return. 

(You may notice that it's working just like RADAR, which does the
same thing with radio waves instead of sound waves.)

Even if you know how long the sound took to get to the bottom and
return to the top, you can't DO anything with this information if you
don't know the SPEED of the sound through the water.  Not only
the inventory of this machine, but anyone who uses it, has to know
the speed of the sound through water in order to use the round-trip
time to calculate the depth.
3 0
4 years ago
A piece of metal is 4 cm by 10 cm<br>by 2 cm. Find its mass if it has a<br>density of 2 g/cm'.​
harina [27]

Answer:

m=ρV

V=LxWxD

V=4x10x2=80

m=2*80=160 grams

Explanation:

Mass is equal to density multiply by volume of object. Volume of rectangle pice can be calculated by multiplying all sides.

3 0
3 years ago
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