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aivan3 [116]
3 years ago
5

List 5 good insulators and 5 good conductors   

Physics
1 answer:
damaskus [11]3 years ago
3 0
Insulators- fur, plastic, lots of non metals
Conductors- metals, wire, most metals
:)
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How long will it take an object to hit the ground if dropped from 100 meters
mash [69]

Answer:

The answer depends on what object you are dropping. Are you dropping a balloon or a car? (I'm joking 'bout that one.) If the mass of the object is very little, then it might drop slower. If the mass is bigger, then it might drop faster.

Good luck!

Explanation:

8 0
4 years ago
Read 2 more answers
An airplane starts its takeoff by moving at 1.7 m/s. The plane must then accelerate at 3.0 m/s2 for the next 30s to reach its fi
otez555 [7]

Answer:

The distance is 1.4 km.

Explanation:

Given that,

Initial velocity u= 1.7 m/s

Accelerate a= 3.0 m/s²

Time = 30 s

We need to calculate the distance

Using equation of motion

s= ut+\dfrac{1}{2}at^2

Where, u = initial velocity

a = acceleration

t = time

Put the value in the equation

s=1.7\times30+\dfrac{1}{2}\times3.0\times(30)^2

s=1401\ m

s=1.4\ km

Hence, The distance is 1.4 km.

7 0
4 years ago
The tip of the fan blade is 0.61 m from the center of the fan. The fan turns at a constant speed and completes 2 rotation every
Goryan [66]

Answer:

What is the centripetal acceleration of the tip of the fan blade?

6.0 m/s2

48 m/s2

53 m/s2

96 m/s2

Answer is 96

Explanation:

5 0
4 years ago
An arch carries the thrust of weight to its _____(1)______. With a _____(2)______, the horizontal part of the structure supports
ivolga24 [154]
<h2>Arch Carries the thrust of Weight - Option D</h2>

An arch carries the thrust of weight to its sides. With a post-and-lintel, the horizontal part of the structure supports all the weight above it. The reason is that the post and lintel is a system of construction. In this the powerful parallel components are kept up by powerful upward components that has large cavities between them.

Therefore, an arch carries the thrust of weight to its sides for balancing purposes.

8 0
3 years ago
Read 2 more answers
A 3.00 m-long 6.00-kg ladder pivoted at the top hangs down from a platform at the circus. A 42.0-kg trapeze artist climbs to a p
statuscvo [17]

Answer:

The period of the system of ladder and woman, T = 2.5 seconds

Explanation:

Mass of the ladder, m_1 = 6 kg

Mass of the artiste, m_2 = 42.0 kg

Length of the ladder, L = 42.0 kg

The total moment of inertia can be calculated using the equation:

I = \frac{1}{3} M_1 L^2 + m_2 (\frac{L}{2} )^2\\I = \frac{1}{3} *6*3^2 + 42* (\frac{3}{2} )^2\\I = 18 + 94.5\\I = 112.5 kg m^2

D = L/2 = 3/2

D = 1.5 m

The frequency of the system of ladder and woman follows that of a physical pendulum which can be given by the equation:

f = \frac{1}{2\pi } \sqrt{\frac{mgD}{I} } \\f = \frac{1}{2\pi } \sqrt{\frac{48*9.8*1.5}{112.5} }\\f = 0.4

The period of the system of ladder and woman is given by:

T = 1/f

T = 1/0.4

T = 2.5 seconds

5 0
3 years ago
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