answer.
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
balu736
1 month 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:
inna [3.1K]1 month ago
6 0

Answer:

32 bottles

Explanation:

If we sketch a free body diagram for the child, we observe his weight alongside the buoyant force

W-B=0

They have to equalize for equilibrium to be maintained allowing him to float; this buoyant force matches the weight of the water displaced

W=B=Ww

Mg=mg

32 kg=mass of water displaced

given the water density of 1 kilogram per liter (kg/L), this indicates that a displacement of 32 Liters of water occurs. Thus, since each bottle contains 1 liter, the child would require 32 bottles

You might be interested in
A locomotive is accelerating at 1.6 m/s2. it passes through a 20.0-m-wide crossing in a time of 2.4 s. after the locomotive leav
kicyunya [3294]

Response:

Once it has crossed, the locomotive requires 17.6 seconds to achieve a speed of 32 m/s.

Details:

  The locomotive's acceleration is 1.6 m/s^2

  The duration taken to pass the crossing is 2.4 seconds.

  We can apply the motion equation, v = u + at, where v represents final velocity, u indicates initial velocity, a denotes acceleration, and t signifies time.

  When the speed reaches 32 m/s, we have v = 32 m/s, u = 0 m/s, and a= 1.6 m/s^2.

   32 = 0 + 1.6 * t

    t = 20 seconds.

  Therefore, the locomotive attains a speed of 32 m/s after 20 seconds, and it passes the crossing in 2.4 seconds.

Thus, after clearing the crossing, it takes an additional 17.6 seconds to reach the speed of 32 m/s.

6 0
2 months ago
Read 2 more answers
In very cold weather, a significant mechanism for heat loss by the human body is energy expended in warming the air taken into t
ValentinkaMS [3465]
A) B) Explanation: Given: temperature of air, temperature of lungs, specific heat transferred from the lungs, specific heat of air, mass of 1 L air, breath rate. A) Calculate the amount of heat required to raise the air in the lungs to body temperature. B) Determine heat loss per hour.
7 0
2 months ago
In what processes do proteins in the electron transport chain participate?
kicyunya [3294]

Answer:

1. Reactions involving oxidation and reduction along with proton pumping

2. Reactions involving phosphorylation and proton pumping

Explanation:

During oxidative phosphorylation, there is a transfer of electrons from donors to acceptors, which constitutes a redox reaction.

These redox reactions liberate energy that is utilized to produce ATP. In eukaryotic cells, these reactions are performed by protein complexes found in the mitochondria, while in prokaryotic cells, the proteins are positioned in the intermembrane space of the cells. These interconnected protein complexes are referred to as electron transport chains.

8 0
1 month ago
During the construction of an office building, a hammer is accidentally dropped from a height of 784 ft. the distance (in feet)
Softa [3030]
T= 24.5 feet per second. That’s the speed it attains just before hitting the ground.
7 0
1 month ago
Read 2 more answers
The stomach lining is made up of deep muscular grooves.How might these structures help the stomach to break down food?
Sav [3153]
I sincerely hope this information proves useful to you.

7 0
1 month ago
Other questions:
  • How many electrons must be removed from a neutral, isolated conducting sphere to give it a positive charge of 8.0 x 10 8 C? [Q=n
    14·1 answer
  • Certain insects can achieve seemingly impossible accelerations while jumping. the click beetle accelerates at an astonishing 400
    10·1 answer
  • For anti-ballistic missile system, the time of flight tf is determined by the initial speed v0 of the missile and the maximum ra
    6·1 answer
  • While running these tests, crall notices a similarity in the velocity measured at the ground independent of whether the tennis b
    8·2 answers
  • Two large insulating parallel plates carry charge of equal magnitude, one positive and the other negative, that is distributed u
    13·1 answer
  • What wavelength of light contains enough energy in a single photon to ionize a hydrogen atom?
    5·2 answers
  • Consider three identical metal spheres, A, B, and C. Sphere A carries a charge of -2.0 µC; sphere B carries a charge of -6.0 µC;
    6·1 answer
  • A hockey stick of mass ms and length L is at rest on the ice (which is assumed to be frictionless). A puck with mass mp hits the
    12·1 answer
  • A pile driver drops from a height of 35 meters
    11·2 answers
  • In two or more complete sentences, explain the effect of gases being trapped in the atmosphere.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!