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
Mumz [18]
3 years ago
8

Objects: A balloon full of helium in the air. Air- 1.27 kg/ml or Helium Balloon- 0.33 kg/ml

Physics
1 answer:
dem82 [27]3 years ago
6 0

Answer:

Air has greater density.

The object will float.

Explanation:

Density of a body is defined as the mass of a body per unit volume of it.

Here, air has a density of 1.27 kg per ml and Helium balloon has a density of 0.33 kg per ml. This means that if volume is 1 ml, then the mass of air in that volume will be 1.27 kg and mass of Helium balloon in that same volume will be 0.33 kg.

Therefore, the mass of Helium balloon is lighter than that of air in a given volume. Hence, air is heavier and has a greater density.

A lighter density object always floats over a greater density body.

Hence, Helium balloon will float over air as Helium balloon is less dense than that of air.

You might be interested in
a 3 kg piece of putty that is moving with a velocity of 10 m/s collides and sticks to an 8 kg bowling ball that was at rest. wha
defon

The final velocity is 2.7 m/s

Explanation:

We can solve this problem by using the principle of conservation of momentum: in fact, in absence of external forces, the total momentum of the system must be conserved before and after the collision.

Therefore we can write:

p_i = p_f\\m_1 u_1 + m_2 u_2 = (m_1+m_2)v  

where:  

m_1 = 3 kg is the mass of the putty

u_1 = 10 m/s is the initial velocity of the putty (we take its direction as positive direction)

m_2 = 8 kg is the mass of the ball

u_2 = 0 m/s is the initial velocity of the ball (at rest)

v is the final combined velocity of the two putty+ball

Re-arranging the equation and substituting the values, we find the  final combined velocity:

v=\frac{m_1 u_1 + m_2 u_2}{m_1+m_2}=\frac{(3)(10)+0}{3+8}=2.7 m/s

And the positive sign indicates their final direction is the same as the initial direction of the putty.

Learn more about momentum here:

brainly.com/question/7973509  

brainly.com/question/6573742  

brainly.com/question/2370982  

brainly.com/question/9484203  

#LearnwithBrainly

3 0
3 years ago
What occurs when the moon blocks the view of the sun
Sever21 [200]

Answer:

solar eclipse

Explanation:

because at that time, the moon completely covers the path and casts its shadow on earth because it is present between sun and earth's path. so, solar eclipse occurs.

hope it helps :)

8 0
3 years ago
I need help on all of this
wel

dude is -2m/s, ...ettte is +2m/s

pos vel is when dudette, eg, is going in increasing x, in this case.

neg vel  is when dudette, eg, is going in decreasing x, in this case. ie she turns round and runs

zero vel is zero speed. dudette standing still

positive vel neg pos top dia

no

yes

yes

yes

yes

yes

all yes looks like ...




4 0
3 years ago
The earthquake killed about 60 people and was the strongest earthquake to hit
STatiana [176]
This seems like an incomplete question..
3 0
3 years ago
Read 2 more answers
Does the atmosphere contain 21% nitrogen in 78% oxygen
Alex777 [14]

Answer:

An atmosphere is the layers of gases surrounding a planet or other celestial body. Earth's atmosphere is composed of about 78% nitrogen, 21% oxygen, and one percent other gases

7 0
3 years ago
Other questions:
  • an automobile panel lamp with a resistance of 33 ohm is placed across the battery shown in Figure 11. What is the current throug
    15·1 answer
  • What is the length of an aluminum rod at 65°C if its length at 15°C is 1.2 meters?
    13·2 answers
  • What happens when a chemical change takes place?
    7·2 answers
  • Which formula can be used to find the show angle of the resultant vector? A)sin∅=Ry/Rx,B)tan∅=Rx/Ry, C)tan∅=Ry/Rx, D)sin∅=Rx/Ry
    10·2 answers
  • A sample of tendon 3.00 cm long and 4.00 mm in diameter is found to break under a minimum force of 128 N. If instead the sample
    10·1 answer
  • A small amber bead with a mass of 12.6 g and a charge of −0.646 µC is suspended in equilibrium above the center of a large, hori
    10·1 answer
  • Describe briefly the potential energy it has ( roller coaster)
    10·1 answer
  •  Why are radio waves safer to humans than X- Rays
    8·1 answer
  • What 3 dance styles make up musical theatre?
    10·1 answer
  • A rod of length 0.82 m, rotating with an angular speed, 4.2 rad/s, about axes that pass perpendicularly through one end, has a m
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!