2 years ago

"NEED HELP FAST" Which of the following is a vector quantity?

Physics

1 answer:

svet-max [94.6K]2 years ago

3 0

Answer:

the answer is b. b velocity. remember v=v

You might be interested in

PLEASE HELP! Can you do the write about it! Will thank and try to mark brainiest!

goblinko [34]

Move the objects faster to get more friction.

8 0

2 years ago

Read 2 more answers

If two objects are the same size, will they have the same mass?

jeka57 [31]

No because they could be different materials for example one could be concrete and one could be aluminium

4 0

2 years ago

An important dimensionless parameter in certain types of fluid flow problems is the Froude number defined as V/√g.l where V is a

prohojiy [21]

Answer:

1.24611

Explanation:

V = Velocity = 10 ft/s

L = Length = 2 ft

g = Acceleration due to gravity = 32.2 ft/s²

Froude number is given by

$Fr=\dfrac{V}{\sqrt{gL}}\\\Rightarrow Fr=\dfrac{10}{\sqrt{32.2\times 2}}\\\Rightarrow Fr=1.24611$

Converting to SI units

$10\ ft/s=10\times \dfrac{1}{3.281}$

$32.2\ ft/s^2=32.2\times \dfrac{1}{3.281}$

$2\ ft=2\times \dfrac{1}{3.281}$

$Fr=\dfrac{V}{\sqrt{gL}}\\\Rightarrow Fr=\dfrac{10\times \dfrac{1}{3.281}}{\sqrt{32.2\times \dfrac{1}{3.281}\times 2\times \dfrac{1}{3.281}}}\\\Rightarrow Fr=1.24611$

The Froude number is 1.24611

The Froude number is equal. The Froude number is dimensionless as the units cancel each other. In order for this to happen the units used need to be consitent either imperial or SI.

7 0

2 years ago

Justify why sound waves need a medium to propagate with example??

Lana71 [14]

Answer:

Sound needs a material medium for their propagation like solid, liquid or gas to travel because the molecules of solid, liquid and gases carry sound waves from one point to another. Sound cannot progress through the vacuum because the vacuum has no molecules which can vibrate and carry the sound waves.

3 0

3 years ago

HELP I THOUGHT IT WAS 4 AAAAAAAAAAAH

daser333 [38]

6 cups honey your welcome

4 0

3 years ago

Read 2 more answers