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Estatica Problemas

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Enviado por   •  5 de Octubre de 2011  •  781 Palabras (4 Páginas)  •  546 Visitas

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1–1. Round off the following numbers to three significant

figures: (a) 4.65735 m, (b) 55.578 s, (c) 4555 N, and

(d) 2768 kg.

1–2. Represent each of the following combinations of units

in the correct SI form using an appropriate prefix: (a) ,

(b) N>mm, (c) MN>ks2, and (d) kN>ms.

mMN

1–3. Represent each of the following quantities in the

correct SI form using an appropriate prefix: (a) 0.000431 kg,

(b) 35.3(103) N, and (c) 0.00532 km.

*1–4. Represent each of the following combinations of

units in the correct SI form: (a) , (b) , and

(c) mN>(kg # ms).

Mg>ms N>mm

© 2010 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved.This material is protected under all copyright laws as they currently

exist. No portion of this material may be reproduced, in any form or by any means, without permission in writing from the publisher.

1 Solutions 44918 1/21/09 8:43 AM Page 1

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© 2010 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved.This material is protected under all copyright laws as they currently

exist. No portion of this material may be reproduced, in any form or by any means, without permission in writing from the publisher.

1–5. Represent each of the following combinations of

units in the correct SI form using an appropriate prefix:

(a) kN>ms, (b) Mg>mN, and (c) MN>(kg # ms).

1–7. A rocket has a mass of slugs on earth.

Specify (a) its mass in SI units and (b) its weight in SI units.

If the rocket is on the moon, where the acceleration due to

gravity is , determine to three significant

figures (c) its weight in SI units and (d) its mass in SI units.

gm = 5.30 ft>s2

250(103)

*1–8. If a car is traveling at , determine its speed in

kilometers per hour and meters per second.

55 mi>h

1–6. Represent each of the following to three significant

figures and express each answer in SI units using an

appropriate prefix: (a) 45 320 kN, (b) , and (c)

0.005 63 mg.

568(105) mm

FPO

FPO

1 Solutions 44918 1/21/09 8:43 AM Page 2

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© 2010 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved.This material is protected under all copyright laws as they currently

exist. No portion of this material may be reproduced, in any form or by any means, without permission in writing from the publisher.

1–9. The pascal (Pa) is actually a very small unit of

pressure. To show this, convert to .

Atmospheric pressure at sea level is in2. How many

pascals is this?

14.7 lb>

1 Pa = 1 N>m2 lb>ft2

FPO

1–10. What is the weight

...

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