Ask question

Ask question

All categories

notsponge [240]

2 years ago

6

9. An empty, massless cubo is monsured to have all sides equal to 11 cm. It is Ponting in water and will slowly be filled with s

and
that has a density of 3.5 g/cm! What volume of sand will cause the box to sink?

1 answer:

Mashcka [7]2 years ago

3 0

Answer:

please refer to the attachment.

You might be interested in

A spring with spring constant of 26 N/m is stretched 0.22 m from its equilibrium position. How much work must be done to stretch

Evgen [1.6K]

Answer:

1.503 J

Explanation:

Work done in stretching a spring = 1/2ke²

W = 1/2ke²........................... Equation 1

Where W = work done, k = spring constant, e = extension.

Given: k = 26 N/m, e = (0.22+0.12), = 0.34 m.

Substitute into equation 1

W = 1/2(26)(0.34²)

W = 13(0.1156)

W = 1.503 J.

Hence the work done to stretch it an additional 0.12 m = 1.503 J

8 0

3 years ago

What characteristics do all minerals share

allsm [11]

The all minerals are pure and free from gangue particles......

7 0

4 years ago

An object of known mass M with speed v0 travels toward a wall. The object collides with it and bounces away from the wall in the

Bingel [31]

Neither side of the equation may be used because there are too many unknown quantities before, during, and after the collision

Explanation:

The impulse theorem states that the change in momentum of an object is equal to the impulse, which is the product between the average force applied and the duration of the collision:

$\Delta p = F \Delta t$

where

$\Delta p$ is the change in momentum

F is the average force

$\Delta t$ is the duration of the collision

In this problem, neither side of the equation can be used to measure the change in momentum. In fact:

- The change in momentum (left side) is given by

$\Delta p = m(v-u)$

where

m is the mass of the object

u is the initial velocity

v is the final velocity

Here the final velocity is not known, so it's not possible to use this side of the equation

- The impulse (right side) is given by

$F\Delta t$

here the average force is known, however the duration of the collision is not known, so it's not possible to use this side of the equation.

Learn more about momentum:

brainly.com/question/9484203

#LearnwithBrainly

3 0

4 years ago

You deposit a thin film of magnesium difluoride on a glass lens (n >1.60), reducing the reflection of yellow light, at normal

JulsSmile [24]

To solve this problem it is necessary to apply the concepts related to destructive interference.

The concept refers to an overlap of two or more waves of identical or similar frequency that, when interfering, creates a new pattern of waves of lower intensity

By definition destructive interference is given by

$2Mt = (n+\frac{1}{2})\lambda$

Where,

$\lambda= wavelength$

n=integer (1,2,3,4,5,6...etc)

t = thickness

M= Index of refrqaction

For minimum thickness to satisfy this condition n will be minimum there,

n=0

Therefore

$2Mt = (0+\frac{1}{2})\lambda$

Solving to find M,

$M = \frac{\lambda}{4t}$

$M = \frac{585nm}{4*106nm}$

$M = 1.38$

Therefore the correct answer is B. 1.38

6 0

4 years ago

If a train travel from Addis Ababa to Dire Dawa at a constant velocity of 400Km/hr and the to Djibouti at a constant velocity of

madreJ [45]

The value of V is 640 km/hr.

<h3>What is Average velocity?</h3>

Average velocity is the change in position or displacement (∆x) divided by the time intervals (∆t) in which the displacement occurs.

To calculate the value of V from the question, we use the formula below.

V' = (V+U)/2............ Equation 1

Making V the subject of the equation

V = 2V'-U.............. Equation 2

From the question,

⇒ Given:

V' = 520 km/hr
U = 400 km/hr

Substitute these values into equation 2

V = (520×2)-400
V = 640 km/hr

Hence, the value of V is 640 km/hr.

Learn more about average velocity here: brainly.com/question/4931057

#SPJ1

4 0

2 years ago