# 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?

physics
heat to melt ice 2100 kj liquid 4186 kj steam 2010 kj heat to heat steam 301.5 kj

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

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 ...

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

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 ...

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

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

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

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

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

THANK YOU VERY MUCH...

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.

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?

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

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...

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 ...

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 ...

PHYSICS
I THOUGHT IT WAS .5X100=50/2=25N

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...

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

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 ...

History
BEFORE 1802 FROM NORTHERN AND WESTERN EUROPE AFTER 1802 SOUTHERN AND WESTERN EUROPE.

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