Monday
October 20, 2014

Posts by DMITRIC


Total # Posts: 23

physics
How much heat in KJ is needed to change 3.0 kg of ice at -10C into (superheated) steam at +150C ? Do I need to find specific heat? (3.0kg)(2100)(150-10)= 882kj right?
April 22, 2011

physics
heat to melt ice 2100 kj liquid 4186 kj steam 2010 kj heat to heat steam 301.5 kj
April 21, 2011

physics
How much heat in KJ is needed to change 3.0 kg of ice at -10C into (superheated) steam at +150C ?
April 21, 2011

physics
A cake of soap placed in a bathtub of water sinks. The buoyant force on the soap is: a- Zero b- Less than its weight c- Equal to its weight d- More than its weight I believe is D for if the cake of soap sinks, it means that the specific gravity is more than 1, so it is more ...
April 17, 2011

PHYSICS
The input piston of a hydraulic press is 20mm in diameter, and the output piston is 10mm in diameter. an input force of 1.0N will produce an output force of: a- 0.25N b- 0.50N c- 2.0N D- 4.0N
April 17, 2011

PHYSICS thankyou in advance...
A cake of soap placed in a bathtub of water sinks. The buoyant force on the soap is: a- Zero b- Less than its weight c- Equal to its weight d- More than its weight I believe is D for if the cake of soap sinks, it means that the specific gravity is more than 1, so it is more ...
April 16, 2011

PHYSICS
The input piston of a hydraulic press is 20mm in diameter, and the output piston is 10mm in diameter. an input force of 1.0N will produce an output force of: a- 0.25N b- 0.50N c- 2.0N D- 4.0N
April 16, 2011

PHYSICS
The input piston of a hydraulic press is 20mm in diameter, and the output piston is 10mm in diameter. an input force of 1.0N will produce an output force of: a- 0.25N b- 0.50N c- 2.0N D- 4.0N
April 16, 2011

PHYSICS
The input piston of a hydraulic press is 20mm in diameter, and the output piston is 10mm in diameter. an input force of 1.0N will produce an output force of: a- 0.25N b- 0.50N c- 2.0N D- 4.0N
April 15, 2011

PHYSICS
So, D will be the right answer...:) Thank you so much.
April 15, 2011

PHYSICS
The pressure at the bottom of a vessel filled with liquid does not depend on: a- the acceleration of gravity b- the liquid density c- the height of the liquid d- the area of the liquid surface
April 15, 2011

PHYSICS help please
THANK YOU VERY MUCH...
April 15, 2011

PHYSICS please
what is the minimum gauge pressure needed in the water pipe leading to a building if the water is to come out of a faucet on the 12th floor, 41m. above the pipe.
April 15, 2011

PHYSICS
A 30 kg. balloon is filled with 100 m to the third power of helium. how much force is needed to hold it down?
April 15, 2011

PHYSICS please HELP
Thanks Mr. drwls for your input, but I do not follow the above notation. is * multiplication? forgive my ignorance...:(
March 9, 2011

PHYSICS please HELP
A box is lifted with a pry bar, by slipping the bar under the box and lifting up on the bar. If the pry bar is 2m in length and it is grasped at the end, and the box is located at the opposite end, the fulcrum, with its center of gravity at a distance of 0.5 m from the fulcrum...
March 9, 2011

PHYSICS
A plank of uniform construction 5 metres in length and of mass 25kg. is balanced on a sawhorse stand which acts as a fulcrum. a bag of sand having a mass of 20kg. is suspended from one end of the plank. on the other end of the plank, a concrete block of mass 15 kg is hung at ...
March 9, 2011

PHYSICS
A plank of uniform construction 5 metres in length and of mass 25kg. is balanced on a sawhorse stand which acts as a fulcrum. a bag of sand having a mass of 20kg. is suspended from one end of the plank. on the other end of the plank, a concrete block of mass 15 kg is hing at ...
March 8, 2011

PHYSICS
I THOUGHT IT WAS .5X100=50/2=25N
March 7, 2011

PHYSICS
A box is lifted with a pry bar, by slipping the bar under the box and lifting up on the bar. If the pry bar is 2m in length and it is grasped at the end, and the box is located at the opposite end, the fulcrum, with its center of gravity at a distance of 0.5 m from the fulcrum...
March 6, 2011

CALCULUS
Y=(XSQUARE + 1 OVER XSQUARE - 1) CLOSE PARENTHESIS TO THE 3 POWER...
March 6, 2011

PHYSICS
A CIRCULAR SAW BLADE ROTATING AT 15 REV/S IS BROUGHT TO A STOP IN 125 REV. WHAT IS THE VALUE OF WO IN RAD/S? 94.2 RAD/S WHAT IS THE SIZE OF THE DISPLACEMENT, TEITA, IN RADIANS? WHAT IS THE SIZE OF THE ANGULAR ACCELERATION EXPERIENCED? HOW LONG DID IT TAKE FOR THE SAW BLADE TO ...
March 6, 2011

History
BEFORE 1802 FROM NORTHERN AND WESTERN EUROPE AFTER 1802 SOUTHERN AND WESTERN EUROPE.
March 5, 2011

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