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Roman55 [17]
3 years ago
9

Lynn rubs a balloon with a piece of wool, which causes the balloon to pick up some of the electric charges from the wool. Lynn t

hen observes that the balloon temporarily sticks to a wall. After several seconds, the balloon falls to the ground. Which best describes the forces in this scenario?
The strong force causes the balloon to stick to the wall, and the weak force causes the balloon to fall to the ground.
The weak force causes the balloon to stick to the wall, and the strong force causes the balloon to fall to the ground.
The electromagnetic force causes the balloon to stick to the wall, and gravitational force causes the balloon to fall to the ground.
Gravitational force causes the balloon to stick to the wall, and electromagnetic force causes the balloon to fall to the ground.
Physics
2 answers:
Softa [21]3 years ago
6 0

Answer:

C

Explanation:

The electromagnetic force causes the balloon to stick to the wall, and gravitational force causes the balloon to fall to the ground.

Hitman42 [59]3 years ago
5 0

Answer:

electrostatics

gravitational forces

Explanation:

rubbing the ballon leads to it acquiring charges that are opposite to that in the wall.the electostatic forces attract the ballon to the wall and tyhe gravitational pull later acts on the ballon causing it to fall down

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Which of the following is an example of rotation
SOVA2 [1]
I believe it is D. Earth spinning on it's axis.
8 0
3 years ago
A boy walked 4m east then 3m south find the displacement
Solnce55 [7]

Answer:

5m

Explanation:

4^{2}+3^{2}=5^{2}\\5^{2}=25

Use the Pythagorean theorem to calculate the long edge of the triangle, which would be his displacement.

3 0
2 years ago
A paleontologist estimates that when a particular rock formed, it contained 12 mg of the radioactive isotope potassium-40, which
leva [86]

Answer:

t = 2.52 billion \:years

Explanation:

As we know by radioactivity law

N = N_o e^{-\lambda t}

so here we will have

N = 3 mg

N_o = 12 mg

now we will have

3 = 12 e^{-\lambda t}

\lambda t = ln 4

now we also know that

\lambda = \frac{ln2}{1.26 \times 10^6 yrs}

t = 1.26\times 10^6\times \frac{ln4}{ln2}

t = 2.52 billion \:years

7 0
3 years ago
A 4.0-kg object has 72 J of kinetic energy.<br> Determine its speed.
Svetlanka [38]

Answer:

6m/s

Explanation:

v = sqrt of 2KE/m

Where:

KE = kinetic energy

m = mass of a body

v = velocity of a body

= sqrt of 2(72)/4

= sqrt of 144/4

= sqrt of 36

= 6m/s

8 0
2 years ago
Two identical blocks are heated to different temperatures. The blocks are placed so that they touch, and heat begins to flow bet
baherus [9]

The pair of blocks is insulated, so no energy escapes. The pair of temperatures possible is  95 +95 temperature blocks.

<h3>What is thermal equilibrium?</h3>

When two objects are in direct contact and transfer heat through conduction. When the both object attain same temperature after sometime, they are called in thermal equilibrium.

Two identical blocks are heated to different temperatures. The blocks are placed so that they touch, and heat begins to flow between blocks. The heat will continue to until and unless they have same temperatures. After they being isolated, the temperature of both will be same and no heat is transferred outside.

Thus, the pair of temperatures possible is  95 +95 temperature blocks.

Learn more about temperature.

brainly.com/question/11464844

#SPJ1

4 0
2 years ago
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