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3 years ago

The reason a charged balloon will stick to a wall is that?

Physics

1 answer:

kari74 [83]3 years ago

6 0

The negative charges of the balloon will stick to the positive charges on the wall.

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What do you think will happen to dirt and rocks on the Mountainside when the ice melts

AlekseyPX

This question is personal preference... just answer with whatever YOU think, there probably isn’t s wrong answer if I’d guess.

3 0

3 years ago

A sample of oxygen gas occupies a volume of 5.0L at 90kPa pressure. What volume will it occupy at 145kPa?

Burka [1]

Answer:

<h3>The answer is option A</h3>

Explanation:

The new volume can be found by using the formula for Boyle's law which is

$P_1V_1 = P_2V_2$

Since we are finding the new volume

$V_2 = \frac{P_1V_1}{P_2} \\$

From the question we have

$V_2 = \frac{5 \times 90000}{145000} = \frac{450000}{145000} = \frac{450}{145} \\ = 3.103448...$

We have the final answer as

Hope this helps you

7 0

3 years ago

The driver of a car traveling on the highway suddenly slams on the brakes because of a slowdown in traffic ahead. A) If the car’

ladessa [460]

Answer:

Acceleration is -30000 mi/h²

Distance travelled in the 3 seconds of deceleration is 261.888 feet

Explanation:

t = Time taken for the car to slow down = 3 s =

u = Initial velocity = 75 mi/h

v = Final velocity = 50 mi/h

s = Displacement

a = Acceleration

Equation of motion

$v=u+at\\\Rightarrow a=\frac{v-u}{t}\\\Rightarrow a=\frac{50-75}{\frac{3}{3600}}\\\Rightarrow a=-30000\ mi/h^2$

Acceleration is -30000 mi/h²

$v^2-u^2=2as\\\Rightarrow s=\frac{v^2-u^2}{2a}\\\Rightarrow s=\frac{50^2-75^2}{2\times -30000}\\\Rightarrow s=0.0496\ mi$

Converting to feet

1 mile = 5280 feet

0.0496 mile = 0.0496×5280 = 261.888 feet

Distance travelled in the 3 seconds of deceleration is 261.888 feet

7 0

4 years ago

Identify one force acting on the cart.

Artist 52 [7]

Answer:

pulling force

Explanation:

because the person is pulling that cart.

5 0

3 years ago

Velocity of the ball after 3.63 s

MrRa [10]

Answer:

Explanation:

This question is regarding gravity under motion. Then we can use motion equation to find the final velocity .

Inertial velocity is zero when it's release from rest.

V = U+at

V = 0+ 9.8×3.63

V = 35.574 m/s

5 0

3 years ago