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Hunter-Best [27]
3 years ago
14

What state of matter has a define volume but no definite shape ?

Physics
2 answers:
mariarad [96]3 years ago
6 0

Liquid has no definite volume or shape.

Illusion [34]3 years ago
3 0

<em>Liquid </em>has a definite volume, but not a definite shape.


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You are asked to find a set of dimensionless parameters to organize data from a laboratory experiment, in which a tank is draine
mihalych1998 [28]

Answer:

Step 1

Given: A tank is drained through an orifice from initial liquid level (h₀). The time(r), to  drain the tank, depends on tank diameter (D), orifice diameter (d), acceleration due to gravity (g), liquid density (ρ) and liquid viscosity  (μ).

r = f (h₀, D, d, g, ρ, μ)

Step 2

There are totally seven parameters r, h₀, D, d, g, ρ and μ

∴ n = 7

The primary variables are M, L, T

∴ m = 3

So, the number of repeating variables are, r = 3

Select the three repeating variables are ρ, d, g

Then according to Buckingham, there will be n-m (⇒ 7-3 = 4) dimensionless groups given by π₁, π₂, π₃ and π₄

So, The number of π terms = 4

Explanation:

See attached images for step 3 to 7

6 0
3 years ago
Please help me with this very easy question I just don’t get it.
diamong [38]

Answer:

150m

Explanation:

The relation of speed/time and distance/time is a derivative/integral one, as in speed is the derivative of distance (the faster you go, the faster the distance changes, duh!).

So we need to compute the integral of speed over time from 0.0s to 5.0s.

The easiest way here is to compute the area under the line (it's going to be faster than computing the acceleration and using a formula of distance based on acceleration).

The area under the line is a trapezoid with "height" 5s, and the bases 10m/s and 50m/s. Using the trapezoid area formula of h*(a + b)/2

distance = 5s * (10m/s + 50m/s) / 2 = 5s * 60m/s / 2 = 5s * 30m/s = 150m

Alternatively, we can use the acceleration formula:

a = (50m/s - 10m/s)/5s = 40m/s / 5s = 8m/s^2

distance = v0 * t + a * t^2 / 2 = 10m/s * 5s + 8m/s^2 * (5s)^2 / 2 = 50m + 8m * 25 / 2 = 50m + 100m = 150m.

5 0
2 years ago
(a) From an atomic point of view, why do you have to heat a solid to melt it? (b) If you have a solid and a liquid at room tempe
kow [346]

Answer:

A. & B. Heat energy is needed to convert solid into a liquid because heat energy increases the kinetic energy of the particles. The heat energy that it used to change 1 kg of solid into liquid at atmospheric pressure and at its melting point is called the latent heat of fusion.

6 0
3 years ago
a golfer is on the edge of a 12.5m bluff overlooking the 18th hole which is located 67.1m from the base of the bluff. she launch
Alja [10]

Answer: 26.359 m/s

Explanation:

This problem is related to parabolic motion and can be solved by the following equations:

x=V_{o}cos \theta t (1)

y=y_{o}+V_{o} sin \theta t - \frac{1}{2}gt^{2} (2)

V=V_{o}-gt (3)

Where:

x=67.1 m is the horizontal distance traveled by the golf ball

V_{o} is the golf ball's initial velocity

\theta=0\° is the angle (it was  a horizontal shot)

t is the time

y=0 m is the final height of the ball

y_{o}=12.5 m is the initial height of the ball

g=9.8 m/s^{2} is the acceleration due gravity

V is the final velocity of the ball

Let's begin by finding t  from (2):

t=\sqrt{\frac{2 y_{o}}{g}} (4)

t=\sqrt{\frac{2 (12.5 m)}{9.8 m/s^{2}}} (5)

t=1.597 s (6)

Substituting (6) in (1):

67.1 m=V_{o} cos(0\°) 1.597 s (7)

Finding V_{o}:

V_{o}=42.01 m/s (8)

Substituting V_{o} in (3):

V=42.01 m/s-(9.8 m/s^{2})(1.597 s) (9)

Finally:

V=26.359 m/s

6 0
3 years ago
What is destructive interference?
lesantik [10]
A.............,,,..,.,.,.,.,.,,,,,,,,,’
6 0
3 years ago
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