A cubical block of wood weighing, Physics

Assignment Help:

A cubical block of wood weighing 200g has a lead piece fastened underneath. Find the mass of the lead piece which will just allow the block to float in water. Exact gravity of wood is 0.8 and that of lead is 11.3.

Ans) Let the mass be m,

then to just float Total downward force=bouyant force  

also volume of wooden block=m/d=200/.8=250 cm^3

Hence (200 +m)g = (250+m/11.3 ).1.g

Solving we get...54.85 gm


Related Discussions:- A cubical block of wood weighing

Calculate the radius - protein with a density, 1.  A protein with a density...

1.  A protein with a density of 1.41 g/cm 3 has a molecular weight of 5000 g/mol. a. Calculate its radius. b. The radius measured during an experiment turned out to be 2.24

Fullerene structure and properties, FULLERENE: The fullerene is a cage l...

FULLERENE: The fullerene is a cage like hollow molecules composed of hexagonal and pentagonal groups of atoms, and especially those formed from carbon, that constitute the third

Define band emission spectrum, (i) It having of district bright bands. (...

(i) It having of district bright bands. (ii)It is given by an excited source in molecular state. (iii) E.g. Spectra of molecular NH 3 , CO, H 2 etc.

Positive charge on n-side of the junction, Positive charge on n-side of the...

Positive charge on n-side of the junction Some  of  the  free  electrons  move  across  the junction  from  n-type  to  p-type, leaving  behind  positive  donor  ions  as  they

Find the temperature of the drink, (a) Two 40 g ice cubes are dropped into ...

(a) Two 40 g ice cubes are dropped into 220 g of water in a thermally insulated container. If the water was initially at25°C, and the ice came directly from a freezer at -15°C,what

Why does heated air expand, Why does heated air expand? Temperature is ...

Why does heated air expand? Temperature is often explained as the average thermal energy of the substance at hand. Therefore the hotter a substance is the more thermal energy i

Find larry''s gravitational potential energy, Larry's gravitational potenti...

Larry's gravitational potential energy is 1870Jas he sits 2.20 m above the ground in a sky diving airplane. What is Larry's gravitational potential energy when he begins to jump fr

Determine the radius of the collapsed neutron star, A Neutron Star is forme...

A Neutron Star is formed in the aftermath of a Supernova explosion. The star was originally rotating with a period of 20 days and had a mass of 2x10 30 kg and radius of 6x10 8 m.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd