Ok, that clarifies a few things then. Thanks for the help Stunner. Though I'm not exactly sure what "latent heat of fusion" means, I think it applies to the mass equation..
Ok, that clarifies a few things then. Thanks for the help Stunner. Though I'm not exactly sure what "latent heat of fusion" means, I think it applies to the mass equation..
Ok, that clarifies a few things then. Thanks for the help Stunner. Though I'm not exactly sure what "latent heat of fusion" means, I think it applies to the mass equation..
A 4.00kg block of ice is removed from a freezer where its temperature was maintained at -20C. Find the heat that the ice must absorb in order to warm up to its melting point, melt, and then the water warms up to 10.0 degrees. The specific heat capacity of ice = 2000J/kg-degrees C, the specific...
Ok, now I'm really lost. For Area, I have 24 meters cubed. To find the mass of the bricks I was using the Mass Density of lead (11,340kg/m^3).
Since m = V x D I have a mass of 272,160kg.
Dan, thank you for the response. Yes, you are correct, by A, I should have V. And...should the calculation for the mass of the bricks be using weight density rather than mass density? I used mass density...
I'm having difficulty with the part b.
Question: A stack of lead bricks measures 2.00m by 3.00m by 4.00m
a) Find the mass of the bricks.
b) Find the maximum and minimum possible pressures on the floor under the bricks in Pa and atm.
a)
A = 2m(3m)(4m)
A = 24m^3
mass = V(D)
Weight...
Hey guys, need some help here with a problem. I've gotten half way thru and don't know where to go next. Here's the problem:
The wavelength of a 40,000-Hz ultrasound wave is measured to be 0.868cm. Find the air temperature.
Using v = frequency(wavelength)
40,000-Hz(0.868cm) = v
v = 347...
Here's the question:
It is determined by immersing a crown in water that its volume is 26in^3 = 0.015ft^3.
What would its weight be if it were made of pure gold?
What would its weight be if it half of its volume were gold and half lead?
I'm not sure how to solve. I know this for gold...
I see, so it's referencing an issue relating to force rather than a law. So, the astronaut would need to throw the tools which in turn the tool being thrown offers a force back on the astronaut causing him to move towards the craft...
Here's the question:
"An astronnaut working with many tools some distance away from a spacecraft is stranded when the "manueving unit" malfunctions. How can the astronaut return to the spacecraft by sacrificing some of the tools?"
I don't quite understand what they're getting at here...
I figured the watchband would fall first. Since vertical force of gravity has no effect on the horizontal motion, the arrow would have a horizontal force to overcome before reaching a net zero and dropping. The watch is already at net zero...?
An archer aims an arrow exactly horizontal over a flat field. At the same instant, the archer's watchband breaks and the watch falls to the ground. Does the watch hit the ground the same time as or after the arrow hits the ground and why.