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mel-nik [20]
3 years ago
7

Can spoon ring like a bell prove it

Physics
1 answer:
mote1985 [20]3 years ago
4 0
Yes spoon can sound like a bell. To prove this, we perform an experiment.The handle of the spoon is tied at the mid point of the string, then wrap the ends of the string around pointer fingers. Now place fingers in  ears. Lean over so that spoon hangs freely and swing the spoon so it taps against a door.
A sound is produced because the spoon vibrated, causing sound waves to travel up the string and into ears.
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Earth's _____ cycle moves water from one reservoir to another. This cycling of materials is one of Earth's dynamic processes.
Alenkinab [10]
Earth's HYDROLOGIC cycle moves water from one reservoir to another.
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3 years ago
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You are driving your 1700 kg car at 21 m/s down a hill with a 5.0∘ slope when a deer suddenly jumps out onto the roadway. You sl
podryga [215]

Answer:

d = 27.7 m

Explanation:

Here the car is driving on the inclined plane

So here we can say that work done by the gravity and work done by friction is equal to change in kinetic energy of the system

So here we can write it as

mgsin\theta \times d - F_f \times d = \frac{1}{2}mv_f^2 - \frac{1}{2}mv_i^2

now we have

m = 1700 kg

v_f = 0

v_i = 21 m/s

F_f = 1.5 \times 10^4 N

(1700)(9.81)sin5 (d) - (1.5\times 10^4)d = 0 - \frac{1}{2}(1700)(21^2)

1453.5 d - (1.5\times 10^4)d = -374850

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6 0
3 years ago
A uniform cubical crate is 0.740 m on each side and weighs 600 N. It rests on the floor with one edge against a very small, fixe
Sindrei [870]

Answer:

H = 0.673

Explanation:

given,

side of cubical crate = 0.74

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magnitude of force = 330 N

the Horizontal distance of its Center of mass

= 0.74/2

= 0.37

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By Balancing the Torques, we get

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hence, the height above the floor where force is acting is equal to 0.673 m

6 0
3 years ago
A train 400 m long is moving on a straight track with a speed of 81.4 km/h. The engineer applies the brakes at a crossing, and l
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Answer:

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17.6*1000/60*60=4.89

then, x1/t1=x2/t2

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x2=400*4.89/22.6=86.5//

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Does wax paper, aluminum foil, or plastic wrap cause more friction
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Yes i does. they cause more friction <span />
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