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Nataly_w [17]
2 years ago
13

A coin is dropped into a deep well and the time taken to hit the bottom is measured to be 2.48s. Calculate the following: a) The

depth of the well b) The final velocity of the coin c) The mass of the coin, if the water slows it to a stop in 0.72s exerting an average force of 0.41N on the coin On the basis of which of Newton’s laws is this calculated? What does this law say?
Physics
1 answer:
vladimir1956 [14]2 years ago
6 0

Answer: I’m not sure but my guess would be A.

Explanation:

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A<span> barometer is used to measure air pressure. </span>
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In normal light conditions, how well do plants grow when there are 10 plants in the
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What current flows through a 2.56-cm-diameter rod of pure silicon that is 20.0 cm long, when 1.00 ✕ 103 V is applied to it? (Suc
vfiekz [6]

Answer:

Current, I = 0.0011 A

Explanation:

It is given that,

Diameter of rod, d = 2.56 cm

Radius of rod, r = 1.28 cm = 0.0128 m

The resistivity of the pure silicon, \rho=2300\ \Omega-m

Length of rod, l = 20 cm = 0.2 m

Voltage, V=1\times 10^3\ V

The resistivity of the rod is given by :

R=\rho\dfrac{L}{A}

R=2300\ \Omega-m\dfrac{0.2\ m}{\pi (0.0128\ m)^2}

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Current flowing in the rod is calculated using Ohm's law as :

V = I R

I=\dfrac{V}{R}

I=\dfrac{10^3\ V}{893692.30\ \Omega}

I = 0.0011 A

So, the current flowing in the rod is 0.0011 A. Hence, this is the required solution.

6 0
3 years ago
The pressure inside a blimp is 506 Pa, if the area is 3,000cm2 then what is the force? ​
Zarrin [17]

Answer:

<h2>151.8 N</h2>

Explanation:

The force acting on the blimp can be found by using the formula

<h3>f = p × a</h3>

p is the pressure

a is the area

3000 cm² = 0.3 m²

From the question we have

f = 506 × 0.3

We have the final answer as

<h3>151.8 N</h3>

Hope this helps you

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2 years ago
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Find the horizontal components vcos30 ...one goes right and one goes left so they cancel each other.
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2 years ago
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