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Naddik [55]
3 years ago
8

A square sheet of rubber has sides that are 20 cm long. If you stretch it so that the area of the rubber is four times larger, h

ow
long is each of the sides now?
Each side = ____cm
Physics
2 answers:
MA_775_DIABLO [31]3 years ago
8 0

Answer:

40

Explanation:

The area is 400cm^2 but the area on each side is 40cm.

oee [108]3 years ago
7 0

Answer:

400

Explanation:

Trust me its correct

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The demand equation for the Roland portable hairdryer is given as follows where x (measured in units of a hundred) is the quanti
lesya [120]

Answer:

Explanation:

The concept of elastic and inelastic demand is applied.

for an elastic demand, the elasticity must be greater than 1 and for an Inelastic demand, the elasticity must be less than 1.

The steps and appropriate calculation is as shown in the attached file.

6 0
3 years ago
How much force is required to accelerate a 5 kg mass at 20 m/s^2
Studentka2010 [4]

Hello!

\large\boxed{F = 100N}

Use the equation F = m · a (Newton's Second Law) to solve. Substitute in the given values:

F = 5 · 20

F = 100N

6 0
3 years ago
Why a paperclip does NOT float?
Nataliya [291]
Because of Surface tension
3 0
2 years ago
Read 2 more answers
A superhero swings a magic hammer over her head in a horizontal plane. The end of the hammer moves around a circular path of rad
Korolek [52]

Answer:

9.21954 m/s

54 m/s²

Angle is zero

Explanation:

r = Radius of arm = 1.5 m

\omega = Angular velocity = 6 rad/s

The horizontal component of speed is given by

v_h=\omega r\\\Rightarrow v_h=6\times 1.5\\\Rightarrow v_h=9\ m/s

The vertical component of speed is given by

v_v=2\ m/s

The resultant of the two components will give us the velocity of hammer with respect to the ground

v=\sqrt{v_h^2+v_v^2}\\\Rightarrow v=\sqrt{9^2+2^2}\\\Rightarrow v=9.21954\ m/s

The velocity of hammer relative to the ground is 9.21954 m/s

Acceleration in the vertical component is zero

Net acceleration is given by

a_n=a_h=\omega^2r\\\Rightarrow a_n=6^2\times 1.5\\\Rightarrow a_n=54\ m/s^2

Net acceleration is 54 m/s²

As the acceleration is towards the center the angle is zero.

3 0
2 years ago
Which of the following causes the efficiency of a machine to be less than 100%?
Bond [772]
Friction would inhibit your speed and maximum work potential so, friction is the answer.
Hope this helps, Brainliest please.
7 0
3 years ago
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