1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
yarga [219]
3 years ago
15

A 32-kg child decides to make a raft out of empty 1.0-L soda bottles and duct tape. Neglecting the mass of the duct tape and pla

stic in the bottles, what minimum number of soda bottles will the child need to be able stay dry on the raft?
Physics
1 answer:
Vedmedyk [2.9K]3 years ago
6 0

Answer:

32 bottles

Explanation:

If we create a free body diagram on the child we have his weight and the bouyant force

W-B=0

They must be equal to mantain equilibrium on the body and he can stay floating, this force is equivalent to the weight of water displaced

W=B=Ww

Mg=mg

32 kg=mass of water displaced

1 kilogram per liter (kg/L) is the density of water, this means that 32 Liters of water are displaced and since the bottles can retain 1 liter, the child needs 32 bottles

You might be interested in
A skater is spinning at 15.0 rad/s with a rotational inertia of 8.0 kg m? If she changes her rotational inertia to 5.0 kg mº, wh
mixas84 [53]

Answer:Idrk man

Explanation:

3 0
2 years ago
(D.) Define the following Moment (.) Moment of a force (.) couple of force (.) torque<br>​
erik [133]
Moment of force. Hope this helped
4 0
3 years ago
Marina is staring at an optical illusion where he sees a version of the American flag that is colored green, yellow, and black.
k0ka [10]

Explanation:

The reason why Marina sees the colour red, white and blue or the original colour of the American flag is that because of a phenomenon known as Afterimage. The retina in our eyes have mainly three receptors that are colour sensitive known as cones. These receptors can perceive the colour green, red and blue. Now when we look or stare at a particular colour for a long time, what happen is that our retina becomes tired and they ignore the colours that stared at. And now they work to form other colours at the retina just like the way when we produce other colour from the primary colour.

If the red receptor gets exhausted we will see the colour red. Likewise when we see the colour orange when we stare at the colour blue.

This explains the optical illusion of the American flag.

6 0
3 years ago
The process by which plastic deformation is produced by dislocation motion is called
QveST [7]

Answer:gock uwu

Explanation:

3 0
3 years ago
An electron and a proton are each placed at rest in an electric field of 500 N/C. Calculate the speed (and indicate the directio
Bumek [7]

Answer:

For proton: 2592 m/s In the same direction of electric field.

For electron: 4752000 m/s In the opposite direction of electric field.

Explanation:

E = 500 N/C, t = 54 ns = 54 x 10^-9 s,

Acceleration = Force /mass

Acceleration of proton, ap = q E / mp

ap = (1.6 x 10^-19 x 500) / (1.67 x 10^-27) = 4.8 x 10^10 m/s^2

Acceleration of electron, ae = q E / me

ae = (1.6 x 10^-19 x 500) / (9.1 x 10^-31) = 8.8 x 10^13 m/s^2

For proton:

u = 0, ap = 4.8 x 10^10 m/s^2, t = 54 x 10^-9 s

use first equation of motion

v = u + at

vp = 0 + 4.8 x 10^10 x 54 x 10^-9 = 2592 m/s In the same direction of electric field.

For electron:

u = 0, ae = 8.8 x 10^13 m/s^2, t = 54 x 10^-9 s

use first equation of motion

v = u + at

vp = 0 + 8.8 x 10^13 x 54 x 10^-9 = 4752000 m/s In the opposite direction of electric field.

6 0
3 years ago
Other questions:
  • a projectile is launched straight up at 141 m/s . How fast is it moving at the top of its trajectory? suppose it is launched upw
    10·1 answer
  • Humans first appeared during the _____.
    8·2 answers
  • Why is declaring faith the first of the five pillars of Islam?
    8·1 answer
  • When a pendulum is swinging, the velocity is highest at which point?
    13·2 answers
  • Astrology is considered a science because it is grounded in scientific research.<br>  
    5·2 answers
  • Which air mass would produce cold dry weather in the winter?
    10·2 answers
  • Why is their displacement the same when the distance each traveled was different?
    7·1 answer
  • 1)what's the recommend amount of uv protection that sunglasses should provide?
    8·2 answers
  • Hi am struggling with specific latent heat questions:
    13·1 answer
  • If a mass of 1 kg is accelerated to 1 m/s2 by a force of 1 N, then
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!