Wednesday
June 19, 2013

# Posts by Tim

Total # Posts: 797

A tower that is 65m high makes an obtuse angle with the ground. The vertical distance from the top of the tower to the ground is 59m. What obtuse angle does the tower make with the ground?

Chemistry
Sorry, if I wasn't very clear. I've tried both acid and HCl for the 1st blank and borax and base for the 2nd blank, but still wrong. end point is right though!

Chemistry
This is a lab called Enthalpy and Entropy of Borax Dissolution and I just can't seem to get the right answers... Please help me fill in the blanks The _____ (acid/HCl?)is placed in the buret and the ____ (base/borax?) is placed in the flask beneath the buret. For this expe...

Physics
which has the greater average speed: a car that travels from milepost 35 to milepost 40 in 5 minutes, or one that travels from milepost 68 to milepost 78 in 10 minutes?

algebra
Bob had three 10' lengths of conduit. If he used a total of 13.75' of conduit to install a motor, how much total conduit does he have left?

physics
A comet orbits the Sun with a period of 72.8 yr. (a) Find the semimajor axis of the orbit of the comet in astronomical units (1 AU is equal to the semimajor axis of the Earth's orbit). (b) If the comet is 0.55 AU from the Sun at perihelion, what is its maximum distance fro...

Physics
I'm supposed to get 3.21e-07 N.

Physics
A carefully designed experiment can measure the gravitational force between masses of 9 kg. Given that the density of iron is 7860 kg/m3, what is the gravitational force between two 9.00-kg iron spheres that are touching in N?

physics
I see, so that's where I messed up. Thank you once again. I get 85.3 N now.

physics
Does θ equal 0.5981 degree and W equal 1.58 m? This is what I'm doing to solve for tension: 1) 1.13T=mg(W/2)cos(θ) 2) 1.13T=(20.8)(9.81) x (1.58/2cos(0.5981)) 3) 1.13T= 1.61.1891373 4) T= 142.6452543 = 143 N Am I calculating something wrong? Am I solving for the ...

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