Physics - June 2007

2007-06-10 22:53:59 · 5 answers · asked by Anonymous

the potential difference increases from 10.6 V to 16.2 V . what is the capacitance of the capacitor?

A 1.3
B 2.4
C 7.5
D 9.1

2007-06-10 22:13:49 · 2 answers · asked by Anonymous

What is the buoyant force on the object ?

2007-06-10 21:05:22 · 5 answers · asked by Anonymous

from a solid to a liquid at its melting point. what is the metal?

A. Gold
B. Iron
C. Lead
D. Silver
heat of fusion , heat of vaporization
gold ~ 6.30 x 10^4 , 1.64 x 10^6
iron ~ 2.66 x 10^5 , 6.29 x 10^6
lead ~ 2.04 x 10^4 , 8.64 x 10^5
silver ~ 1.04 x 10^5 , 2.36 x 10^6

2007-06-10 20:45:37 · 2 answers · asked by Anonymous

they both collide. the white car that is travelling east at (v*A=16.3m/s , m*A=1160kg)

and the black car that is traveling north at (v*B=20.7m/s , m*B=1229kg)

the cars stick together and moce off in another direction. what is the magnitude of the cars' final momenta???
1. 5.96x10^4 kg x m/s
2. 1.19x10^4 kg x m/s
3. 3.13x10^4 kg x m/s
4. 3.17x10^4 kg x m/s


And at what angle north of east is the cars' direction of motion after the collision?? Use Inverse of tan (tan^-1)
1. 36.5 Degrees
2. 38.2 Degrees
3. 39.8 Degrees
4. 53.4 Degrees

2007-06-10 20:26:29 · 3 answers · asked by Anonymous

2007-06-10 20:20:50 · 3 answers · asked by Anonymous

and moves off at an angle 60.0 degrees north of east. the black ball moves off at an angle 48.2 degrees south of east. what is the whites ball's initial velocity??

2007-06-10 20:17:08 · 1 answers · asked by Anonymous

what is the angular impulse that slowed the wheel?

2007-06-10 20:13:24 · 1 answers · asked by Anonymous

I know a little about osmotic pressure and didn't think animals could survive long going from one to the other, let alone going from an ocean then swimming all the way up to the mountain streams of the river where they were spawned

2007-06-10 19:52:21 · 5 answers · asked by rob p 1

Ancient meaning the windmills that aren't attached to a generator.
Windmills which are used to grind grains, pump water or saw wood.

Thanks in Advance.

2007-06-10 19:34:30 · 1 answers · asked by Anonymous

2007-06-10 19:24:44 · 20 answers · asked by Milo 2

2007-06-10 18:55:51 · 4 answers · asked by dogvirusdoo 1

...between them equal to the universal gravitational constant? So how many newtons would it be?

2007-06-10 18:49:32 · 2 answers · asked by dogvirusdoo 1

A hollow TREASURE CHEST is 0.40 m on an edge. The TREASURE CHEST is floating in a lake with one third of its height above the surface and the walls of the TREASURE CHEST have negligible thickness and water is poured in. What is the depth of the water in the TREASURE CHEST at the instant that the box begins to sink...

Everything piratey is "in" these days....of course replacing an every day box with a treasure chest will motivate people to help me solve this problem....

thanks for any help

Thanks for any help that you can offer :)

2007-06-10 18:45:20 · 3 answers · asked by Anonymous

A cylinder is fitted with a piston under which is a spring. The cylinder is open and the top and there is no friction. The spring constant is 3200 N/m. The piston has negligible mass and a radius of 0.025m...when the air above the piston is completely pumped out how much does the atmospheric pressure cause the spring to compress??

Thank you for any help that you can offer

2007-06-10 18:39:05 · 1 answers · asked by Anonymous

When 46.2 J of thermal energy are released from a piece of copper, the temperature of the copper decreases from 80.0°C to 20.0ºC. The theoretical specific heat capacity of copper is 0.385 J/g·°C. What was the mass of the piece of copper?
a) 6.00 g
b) 2.00 g
c) 0.273 g
d) 1.01 kg

2007-06-10 18:26:55 · 1 answers · asked by Anonymous

with a constant speed. (By using Symbols). And if an angle is the max. angle of incline just before the block moves, what is the coeficient kinetic friction in terms of angles?

2007-06-10 18:24:07 · 3 answers · asked by Anonymous

2007-06-10 18:22:01 · 2 answers · asked by Sachin G 1

2007-06-10 18:09:21 · 3 answers · asked by Anonymous

what is the current in the circuit?

2007-06-10 18:05:02 · 1 answers · asked by Anonymous

supplies 2.70x10^2 J of energy in 20.0 s?

2007-06-10 18:01:56 · 1 answers · asked by Anonymous

A runner times his speed around a circle track with a circumference of 0.478 mi. At the start he is running toward the east and the track starts bending toward the north. If he goes halfway around, he will be running toward the west. He finds that he has run a distance of 0.750 mi in 4.00 min. What is his (a) average speed and (b) average velocity in m/s?


Please be detailed with your answers and show your calculations if possible!

Thanks a lot ;) !1

2007-06-10 17:55:33 · 1 answers · asked by Mark 1

Is it true that "Light carries about 350 Kcal/mole at 550 nm"?

2007-06-10 17:31:11 · 3 answers · asked by submergency 3

if you could travel at the speed of light and you had one flashlight in your hand pointing forward, what would happen to the light from the flashlight if you turned the flaslight on.

2007-06-10 17:16:26 · 15 answers · asked by adarba66 1

2007-06-10 17:14:36 · 2 answers · asked by Anonymous

Adhesive forces?
surface tension?
viscosity?
capillary action?

2007-06-10 17:05:40 · 3 answers · asked by Anonymous

if you want to have a ramp that allows someone to fly high, what sort of ramp do you design?

2007-06-10 16:58:51 · 2 answers · asked by Anonymous

Vector A has magnitude 4.0 units vector B has magnitude 6.0 units. The angle between A and B is 60.0 degrees. What is the magnitude of A + B.

Note: I spent 50 minutes on this freakin problem. Please be detailed with your explations, lol. Thanks :)

2007-06-10 16:40:20 · 6 answers · asked by Mark 1

the weight of the block o the table is 422 N and that of the hanging block is 185 N. Ignoring all frictional affects and assuming the pulley to be massless, find (a) the acceleration of the two blocks and (b) the tension in the cord.

I wasn't sure how to work this problem..
thanks

2007-06-10 16:09:07 · 4 answers · asked by lub1210 1

that thing that makes something alive. when you die, it must go somewhere, but where? is it all just energy and atoms and it just "joins" the universe?

2007-06-10 15:05:36 · 6 answers · asked by Lee Edward 1