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
garik1379 [7]
3 years ago
11

While wearing rubber-soled shoes, you rub a helium balloon on your sweater. The balloon becomes negative charged. Now release th

e balloon. When the balloon is at the ceiling, you are
A) negatively charged.B) electrically neutral.C) positively charged.D) discharged.
Physics
1 answer:
Sonja [21]3 years ago
6 0

Answer: you are creatively creating static electricity.

Explanation:

You might be interested in
You toss a ball straight up with an initial speed of 30m/s. How high does it go, and how long is it in the air (neglecting air r
Brut [27]

Explanation:

Given that,

A ball is tossed straight up with an initial speed of 30 m/s

We need to find the height it will go and the time it takes in the air.

At its maximum height, its final speed, v = 0 and it will move under the action of gravity. Using equation of motion :

v = u +at

Here, a = -g

v = u -gt

i.e. u = gt

t=\dfrac{u}{g}\\\\t=\dfrac{30\ m/s}{9.8\ m/s^2}\\\\t=3.06\ s

So, the time for upward motion is 3.06 seconds. It means that it will in air for 3.06×2 = 6.12 seconds

Let d is the maximum distance covered by it.

d=ut-\dfrac{1}{2}gt^2

Putting all values

d=30(3.06)-\dfrac{1}{2}\times 9.8\times (3.06)^2\\\\d=45.91\ m

Hence, it will go to a height of 45.91 m and it will in the air for 6.12 seconds.

8 0
3 years ago
A Pitot-static tube is used to measure the velocity of helium in a pipe. The temperature and pressure are 44oF and 24 psia. A wa
leonid [27]

Answer:

V=203 ft/s

Explanation:

answer is available in word document named "attach 1" due to some technical error in maths equation. please find the attached document

Download docx
4 0
4 years ago
Read 2 more answers
What is the wavelength associated with 0.113kg ball traveling with velocity of 43 m/s?
lawyer [7]

Answer:

22

Explanation:

3 0
3 years ago
what has more momentum, a baseball traveling at 4 m/s or a baseball traveling at 16m/s ? and which has more energy ?
Anna007 [38]
We know the formulas for momentum and energy. But they both involve the mass of
the object, and we don't know the mass of the baseball.  What can we do ?

It's not a catastrophe.  The question only asks which one is bigger.  If we're clever,
we can answer that without ever knowing how much the momentum or the energy
actually is.  We know that both baseballs have the same mass, so let's just call it
' M ' and not worry about what it really is.

<u>Momentum of anything = (mass) x (speed)</u>
Momentum of the first baseball = (M) x (4 m/s) = 4M
Momentum of the second one = (M) x (16 m/s) = 16M
The second baseball has 4 times as much momentum as the first one has.

<u>Kinetic energy of anything = 1/2 (mass) x (speed squared)</u>
KE of the first baseball = 1/2 (M) x (4 squared) = 8M
KE of the second one = 1/2 (M) x (16 squared) = 128M
The second baseball has 16 times as much kinetic energy as the first one has.
3 0
4 years ago
A motor does 20. joules of work on a block, accelerating the block vertically upward. Neglecting friction, if the gravitational
Eva8 [605]
The motor does 20 J of work on the block, it means that the total mechanical energy of the block has increased by 20 J. But the increase in total mechanical energy is equal to the sum of the increases in potential energy and kinetic energy:
\Delta E = \Delta U + \Delta K
So, if the gravitational potential energy has increased by 15 J, the kinetic energy has increased by
\Delta K = \Delta E - \Delta U = 20 J - 15 J= 5 J
4 0
3 years ago
Other questions:
  • In which of these cases is NO work done on the football? A) You lift a football off the ground. B) You raise a football over you
    5·1 answer
  • Two plastic projectiles have the same mass M and speed V when they hit a glass window pane at a right angle. The interaction bet
    6·1 answer
  • This is a type of symbiotic relationship where both organisms benefit. A) commensalism B) competition C) mutualism D) parasitism
    6·2 answers
  • How does mass and force affect the motion of an object?
    9·2 answers
  • The resting heart rate will increase quickly in a person who has a high level of cardiovascular fitness. True or false
    13·2 answers
  • WORTH 47 POINTS!!! It's EASY too!
    9·1 answer
  • A tank has a gate that automatically opens if the water levelhis high enough. The gate has a squarecross section of side1m and c
    11·1 answer
  • . Current of 1.5A is
    12·1 answer
  • Where do cardiac muscles cause movement in? <br> -bone <br> -tendon <br> -ligament <br> -organ
    15·2 answers
  • How is the weight of an object in a spaceship near the moon related to the distance that the spaceship is from the moon
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!