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3 years ago

How does the volume occupied by a cubic centimeter compare with the volume occupied by a millimeter

Physics

1 answer:

zimovet [89]3 years ago

8 0

One cubic centimeter and one milliliter are equal volumes.

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5. If you walk 70 meters north in 5 minutes and 20 meters south in 15 seconds. What was the average

Tpy6a [65]

Answer:

kjfvkuzfvnv

Explanation:

3 0

3 years ago

A device for acclimating military pilots to the high accelerations they must experience consists of a horizontal beam that rotat

slava [35]

Answer: the angular frequency is 2.31 rad/s

Explanation:

The data we have is:

Radial acceleration A = 27.9 m/s^2

Beam length r = 5.21m

The radial acceleration is equal to the velocity square divided the radius of the circle (the lenght of the beam in this case)

And we can write the velocity as:

v = w*r where r is the radius of the circle, and w is the angular frequency.

w = 2pi*f

where f is the "normal" frequency.

So we have:

A = (v^2)/r = (r*w)^2/r = r*w^2

We can replace the values and find w.

27.9m/s^2 = 5.21m*w^2

√(27.9/5.21) = w = 2.31 rad/s

8 0

3 years ago

Melting, boiling, and bending are considered physical changes, but burning is a chemical change. Explain why this is so.

SVEN [57.7K]

If you melt, boil, or bend an item, it is still the same thing. For instance, If you melt a sugar cube, it will stay as sugar. But if you burn paper, it will turn into ash. Hope this helps!

5 0

4 years ago

Read 2 more answers

Suppose a child drives a bumper car head on into the side rail, which exerts a force of 3900 N on the car for 0.55 s. Use the in

-Dominant- [34]

Answer:

The impulse is 2145 kg-m/s

The final velocity is -8.34 m/s or 8.34 m/s in he opposite direction.

Explanation:

Force on the rail = 3900 N

Elapsed time of impact = 0.55 s

Impulse is the product of force and the time elapsed on impact

I = Ft

I is the impulse

F is force

t is time

For this case,

Impulse = 3900 x 0.55 = 2145 kg-m/s

If the initial velocity was 2.95 m/s

and mass of car plus driver is 190 kg

neglecting friction, the initial momentum of the car is given as

P = mv1

where P is the momentum

m is the mass of the car and driver

v1 is the initial velocity of the car

initial momentum of the car P = 2.95 x 190 = 560.5 kg-m/s

We know that impulse is equal to the change of momentum, and

change of momentum is initial momentum minus final momentum.

The final momentum = mv2

where v2 is the final momentum of the car.

The problem translates into the equation below

I = mv1 - mv2

imputing values, we have

2145 = 560.5 - 190v2

solving, we have

2145 - 560.5 = -190v2

1584.5 = -190v2

v2 = -1584.5/190 = -8.34 m/s

6 0

4 years ago

Help ASAP!!! Will give brainliest!!!

shusha [124]

Answer:

C. Ce2(so4)3

Explanation:

A gas will escape from water as the temperature increases. Solubility is the characteristic of staying dissolved in the water.

4 0

3 years ago