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A 4.9 kg rectangular air mattress is 2.7 m

long, 1.16 m wide, and 0.183 m thick.

What mass can it support in water before

sinking?

Answer in units of kg.

long, 1.16 m wide, and 0.183 m thick.

What mass can it support in water before

sinking?

Answer in units of kg.

Answered! |

A hollow brass tube has outer diameter D =

3.1 cm. The tube is sealed at one end and

loaded with lead shot to give it a total mass

of M = 88 g. The tube floats in water (of

density 1 g/cm3) in vertical position, loaded

end down.

What is the depth of the bottom end of the

tube?

Answer in units of cm.

3.1 cm. The tube is sealed at one end and

loaded with lead shot to give it a total mass

of M = 88 g. The tube floats in water (of

density 1 g/cm3) in vertical position, loaded

end down.

What is the depth of the bottom end of the

tube?

Answer in units of cm.

Answered! |

A container is filled with water to a depth of

47.3 cm. On top of the water floats a 46.2 cm

thick layer of oil with a density of 503 kg/m3.

What is the absolute pressure at the surface

of the water? The acceleration of gravity is

9.81 m/s2 .

Answer in units of Pa.

47.3 cm. On top of the water floats a 46.2 cm

thick layer of oil with a density of 503 kg/m3.

What is the absolute pressure at the surface

of the water? The acceleration of gravity is

9.81 m/s2 .

Answer in units of Pa.

Answered! |

A pipe contains water at 5.6 × 105 Pa above

atmospheric pressure.

If you patch a 4.66 mm diameter hole in the

pipe with a piece of bubble gum, how much

force must the gum be able to withstand?

Answer in units of N.

atmospheric pressure.

If you patch a 4.66 mm diameter hole in the

pipe with a piece of bubble gum, how much

force must the gum be able to withstand?

Answer in units of N.

Answered! |

Air within the funnel of a large tornado may

have a pressure of only 0.19 atm.

What is the approximate outward force F

on a 9.1 m × 26 m wall if a tornado suddenly

envelopes the house? Atmospheric pressure is 1.013 × 105 Pa.

Answer in units of N.

have a pressure of only 0.19 atm.

What is the approximate outward force F

on a 9.1 m × 26 m wall if a tornado suddenly

envelopes the house? Atmospheric pressure is 1.013 × 105 Pa.

Answer in units of N.

Answered! |

An engineer weighs a sample of mercury ( density= 13.6 × 103 kg/m3) and finds that the weight of the sample is 4.3 N.

What is the sample’s volume? The acceleration of gravity is 9.81 m/s2 .

Answer in units of m3.

What is the sample’s volume? The acceleration of gravity is 9.81 m/s2 .

Answer in units of m3.

Answered! |

In order to escape a planet's orbit, an object must

Answered! |

A physics book measures 21.6cm x 27.9cm x 4.5cm. After 3 months of constant use, the top surface is displaced by a 35cm. Assume that the shearing force is 3.5N.

Find:

a. stress

b. angle of shear (radian unit)

c. shear modulus of the metal

Find:

a. stress

b. angle of shear (radian unit)

c. shear modulus of the metal

Answered! |

I need the formula for calculating speed in a parabolic trajcetory with no air resistance. I need to reach a range of 20meters from a 45 degree angle. what speed do I need to be travelling at? I need the formula for future reference. Thank you.

Answered! |

The planet Mars has a mass of 6.1 × 1023 kg

and radius of 3.1 × 106 m.

What is the acceleration of an object

in free fall near the surface of Mars?

The value of the gravitational constant is

6.67259 × 10−11 N · m2/kg2.

Answer in units of m/s2.

and radius of 3.1 × 106 m.

What is the acceleration of an object

in free fall near the surface of Mars?

The value of the gravitational constant is

6.67259 × 10−11 N · m2/kg2.

Answer in units of m/s2.

Answered! |