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polet [3.4K]
3 years ago
12

PLEASE HELP ITS URGENT

Physics
1 answer:
Trava [24]3 years ago
8 0

Answer:

Answers will vary but should include the idea that, because the tablecloth exerted very little force on the tableware, the tableware remains at rest because of its own inertia.

Explanation:

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Samuel places a ladder against his house. The base of the
NemiM [27]

Answer:

d. 8 feet

Explanation:

(height)^2 = (10)^2 - (6)^2

= 100 - 36

height = √64

= 8 feet

5 0
3 years ago
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If you place small pieces of tissue paper near the balloon in Picture 2, they would probably stick to the
pishuonlain [190]

Answer:

The balloon has more negative charges than positive charges. The tissue paper has a neutral charge.The static electricity pulls on the tissue paper lifting it up.

4 0
3 years ago
If the depth of water in a well is 10 m, what is the pressure exerted by it on the
Dahasolnce [82]

Answer:

Let d be the density of the water  (1000 kg / m^3   eq to 1 gm / cm^3)

P = d g h     for the pressure due to a column at the bottom of the column.

P = 1000 kg / m^3 * 10 m/s^2 * 10 m = 10^5 kg / m * s^2 = 10^5 N/m

8 0
3 years ago
An iceskater is turning at a PERIOD of (1/3) second with his arms outstretched. a) What is his ANGULAR VELOCITY w? b) If he pull
Vikentia [17]

Answer:

Explanation:

a )

Time period T = 1/3 s

angular velocity = 2π / T

= 2 x 3.14 x 3

ω = 18.84 radian / s

b )

Applying conservation of angular momentum

I₁ ω₁ = I₂ ω₂

I₁ / I₂ = ω₂ / ω₁

2 = ω₂ / ω

ω₂ = 2 ω

c )

(KE)initial = 1/2 I₁ ω²

(KE)final =  1/2 I₂ ω₂²

= 1/2 (I₁ / 2)  (2ω)²

=  I₁ ω²

c )

Change in rotational kinetic energy

=  I₁ ω² -  1/2 I₁ ω²

=  +  1/2 I₁ ω²

d )

This energy comes from the work done by centripetal force which is increased to increase the speed of rotation.

4 0
3 years ago
What are the units for acceleration?
Anni [7]
The main units for acceleration are <span>the meter per squared second as told by Galileo Galilei. Although there can be more than one example, I consider this one to be correct. Hope it will help you in some measure.</span>
4 0
3 years ago
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