3 years ago

What is volume?

Physics

2 answers:

ddd [48]3 years ago

8 0

Answer:

it is bbb and how are you today

prohojiy [21]3 years ago

6 0

Answer:

the amount of space a substance takes up

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A car accelerates at a rate of 6m/s^2 for 4 seconds until it has traveled a total of 40m what was the initial velocity of the ca

s344n2d4d5 [400]

Using the 2nd equation of motion;

= s = ut + ½at²

= 40 = u×2 + ½ × 6 × 2²

= 40 = 2u + 3 × 4

= 40 - 12 = 2u

= 28/2 = u

= 14 m/s = u

And its done! Simple isn't? :P

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2 years ago

Whats the acceleration?

bagirrra123 [75]

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3 years ago

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lina2011 [118]

17 , d . because a force is being applied but it is not moving .

19 . is c .

20 .b .

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3 years ago

If 2 joules of work is done in raising an apple 8 meters, how much force was exerted?

Archy [21]

W=FdeltaD (Work is equal to Force multiplied by displacement.
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2 years ago

Determine the maximum shearing stress in a solid shaft of 1.5-in. diameter as it transmits 75 hp at a speed of 1800 rpm. (Round

erma4kov [3.2K]

Answer:

$\tau=3.96\ ksi$

Explanation:

Given that

d= 1.5 in ( 1 in = 0.0254 m)

d= 0.0381 m

P= 75 hp ( 1 hp = 745.7 W)

P= 55927.5 W

N= 1800 rpm

We know that power P is given as

$P=\dfrac{2\pi N\ T}{60}$

T=Torque

N=Speed

$55927.5=\dfrac{2\times \pi \times 1800\ T}{60}$

T=296.85 N.m

The maximum shear stress is given as

$\tau=\dfrac{16 T}{\pi d^3}$

$\tau=\dfrac{16\times 296.85}{\pi \times 0.0381^3}$

$\tau=27.35\ MPa$

We know that 1 MPa =0.145 ksi

$\tau=3.96\ ksi$

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3 years ago