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4 years ago

13

how could a person easily tell which letters had four and which rive pages without opening the envelope? what assumptions did yo

u make

1 answer:

Lubov Fominskaja [6]4 years ago

5 0

Had 4 what and when you said rive did u mean 5

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What are the set of equations called that can be used to quantify motion in the case of uniform acceleration?

KATRIN_1 [288]

The kinematic equations are used to <span>quantify motion in the case of uniform acceleration.

The other name is : SUVAT equations, where the letters signify:
displacement (s),
initial velocity (u),
final velocity (v),
acceleration (a), and
time (t).

There are three equations are attached in the picture: </span>

7 0

4 years ago

Determine an appropriate size for a square cross-section solid steel shaft to transmit 260 hp at a speed of 550 rev/min if the m

Phantasy [73]

Answer:46.05 mm

Explanation:

Given

$Power=260\ hp\approx 260\times 746=193.96\ KW$

speed $N=550\ rev/min$

allowable shear stress $(\tau )_{max}=15\ kpsi\approx 103.421\ MPa$

Power is given by

$P=\frac{2\pi NT}{60}$

$193.96=\frac{2\pi 550\times T}{60}$

$T=3367.6\ N-m$

From Torsion Formula

$\frac{T}{J}=\frac{\tau }{r}-----1$

where J=Polar section modulus

T=Torque

$\tau$ =shear stress

For square cross section

$r=\frac{a}{2}$

where a=side of square

$J=\frac{a^4}{6}$

Substituting the values in equation 1

$\frac{3376.6}{\frac{a^4}{6}}=\frac{103.421\times 10^6}{\frac{a}{2}}$

$a=0.04605\ m$

$a=46.05\ mm$

7 0

3 years ago

Calculate mass of the apple

Naya [18.7K]

Answer:

m = 0.20g

Explanation:

m = GPE / g x h

m = 6 / 9.81 x 3

5 0

3 years ago

I would like to know the answers to both 10 & 11

oksian1 [2.3K]

Answer:

picture is not showing up sorry

Explanation:

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4 years ago

A hamster in it's ball starts at rest and accelerates to 3ms1 in 6 seconds.

taurus [48]

Answer:9m

Explanation:

Ball starts from rest . Time taken = 6 seconds. Distance travelled by ball. ∴Distance travelled = 9 m

Hope it helps you

Good luck

7 0

3 years ago