All categories

3 years ago

A man starts his motion from rest with uniform acceleration of 1 m/s2, then his

Physics

1 answer:

Assoli18 [71]3 years ago

5 0

Explanation:

can u pls ask the question again? No full information! I mean are you required the time it takes or what ?

You might be interested in

You hang a heavy ball with a mass of 10 kg from a gold wire 2.6 m long that is 1.6 mm in diameter. You measure the stretch of th

PolarNik [594]

<u>Answer:</u> The Young's modulus for the wire is $6.378\times 10^{10}N/m^2$

<u>Explanation:</u>

Young's Modulus is defined as the ratio of stress acting on a substance to the amount of strain produced.

The equation representing Young's Modulus is:

$Y=\frac{F/A}{\Delta l/l}=\frac{Fl}{A\Delta l}$

where,

Y = Young's Modulus

F = force exerted by the weight = $m\times g$

m = mass of the ball = 10 kg

g = acceleration due to gravity = $9.81m/s^2$

l = length of wire = 2.6 m

A = area of cross section = $\pi r^2$

r = radius of the wire = $\frac{d}{2}=\frac{1.6mm}{2}=0.8mm=8\times 10^{-4}m$ (Conversion factor: 1 m = 1000 mm)

$\Delta l$ = change in length = 1.99 mm = $1.99\times 10^{-3}m$

Putting values in above equation, we get:

$Y=\frac{10\times 9.81\times 2.6}{(3.14\times (8\times 10^{-4})^2)\times 1.99\times 10^{-3}}\\\\Y=6.378\times 10^{10}N/m^2$

Hence, the Young's modulus for the wire is $6.378\times 10^{10}N/m^2$

3 0

4 years ago

How long do elephants live?

ANTONII [103]

65 years but anything can happen to them
I’m not really sure but I hope this helps

5 0

3 years ago

Read 2 more answers

a uniform rule balance on a knife edge at the 55cm mark when a mass of 40g is hung from the 95cm mark. find the weight of the ru

BigorU [14]

Answer:

W = 3.1 N

Explanation:

moments about any convenient point will sum to zero.

I choose summing about the knife edge mark and will assume the ruler of weight W is of uniform construction.

I will assume the ruler weight makes a positive moment

W[55 - 50) - 0.040(9.8)[ 95 - 55] = 0

5W = 15.68

W = 3.136

7 0

3 years ago

What other angle would give the same range at 19 degrees?

yaroslaw [1]

Answer:

I think it is acute angle.

Explanation:

Because it is an angle between 0° and 90°. Hope this answer wil help you.

8 0

3 years ago

Read 2 more answers

At a certain location, Earth's magnetic field of 44 µT is horizontal and directed due north. Suppose the net field is zero exact

AfilCa [17]

Answer:

a) The magnitude of the current is 24.19 A

b) The angle is 90°

Explanation:

a) Given:

B = magnetic field = 44 µT = 44x10⁻⁶T

r = distance = 11 cm = 0.11 m

The current is:

$B=\frac{\mu I}{2\pi r} \\I=\frac{2B\pi r}{\mu } =\frac{2*44x10^{-6}*\pi *0.11}{4\pi x10^{-7} } =24.19A$

b) Because the current flows from the west to the east, therefore, the angle is 90 degrees from the north.

6 0

3 years ago