Physics - April 2007

What is the maximum voltage?For an appliance in an ac circuit of maximum current of 2 amps,what is the effective current?

2007-04-26 14:38:55 · 5 answers · asked by xxgodsgift2youxx 1

How far from the lens will the image be?Is the image real or virtual,and either reduced,enlarged,or same size as object?What is the height of the image?

2007-04-26 14:25:29 · 2 answers · asked by xxgodsgift2youxx 1

1)what is the volume of the raft?
2)what is its mass?
3)what is its weight?
4)what is the raft's apparent weight in water?(hint:density of water=1.00x10^3kg/m^3
5)what is the buoyant force on the raft in water?
6)what is the mass of the displaced water?
7)what is the volume of the displaced water?
8)how much of the raft's volume is below water? how much is above ?
9)answe items 5-8 using ethanol(density=0.806x10^3kg/m^3)instead of water

2007-04-26 13:06:49 · 1 answers · asked by Anonymous

Which equation would most benefit me to determine the time for an air track glider to pass through a photogate. I will have the distance the glider will travel, the width of the glider, mass of the glider, also mass added to glider, and the accelerating weight. This was given to me as a extra credit challenge problem in my Physics class. So can ANYONE help me? I REALLY need the extra credit.

2007-04-26 12:37:41 · 2 answers · asked by drunken_warrior 1

Archimedes' principle can be used not only to determine the specific gravity of a solid uisng a known liquid. The reverse can be done as well.(a) as an example, a 3.40-kg aluminum ball has an apparent mass of 2.10kg when submerged ina particular liquid: calculate the density of the liquid.

2007-04-26 12:30:16 · 1 answers · asked by petite fille 2

2007-04-26 10:49:37 · 3 answers · asked by Alexander 6

2007-04-26 10:46:59 · 9 answers · asked by !!!NAPSTER!!! 1

2007-04-26 10:27:33 · 5 answers · asked by Andrea C 1

2007-04-26 10:03:06 · 2 answers · asked by shanay 1

If the problem is 35 degreesSouth of east, does the vector go down and then right? Or to the right going south? In other words, does it go down from the 0 degree position, or does it go right from the 270 degree position?

2007-04-26 09:34:20 · 4 answers · asked by Blue M 1

A 2.0kg wood block hangs from the bottom of a 1.0kg, 1.0m long rod. The block and rod form a pendulum that swings on a fricitionless pivot at the top end of the rod. A 10g bullet is fired into the block, where it sticks, causing the pendulum to swing out to a 30 degree angle. What is the speed of the bullet? You can treat the wood block as a particle.

I have done a ballistic physics problem like this before but never one where the rod has mass. So how would I do this and incorporate the rod?

2007-04-26 09:31:54 · 2 answers · asked by Anonymous

help pleas physcial science
!

2007-04-26 09:29:33 · 8 answers · asked by king 1

So let's say a car is moving and eventually stops beacuse of the force of friction acting upon it. Where does the energy from the car go?

2007-04-26 09:23:29 · 5 answers · asked by idk 3

1. What is the voltage through an iron if 15 A flows, and the resistance of the iron is 8.0 ?

2. Determine the voltage lost on a stove element with resistance 24 if it draws 7.5 A of current

3. a. Calculate the voltage lost on a 15 light bulb which draws 200 mA of current.

b. A small light bulb is connected to a 3.0 V battery. If 200 mA of current is measured to be flowing through the bulb, calculate the resistance of the light bulb.


4. A computer technician measures 24 mA flowing through a 28 resistor in a computer. Calculate the voltage loss in the resistor.

2007-04-26 09:19:40 · 3 answers · asked by Anonymous

2007-04-26 09:19:27 · 2 answers · asked by cutfoxy08 1

2007-04-26 08:25:44 · 1 answers · asked by Christina 1

2007-04-26 08:13:06 · 21 answers · asked by TJ 2

An electron is moving at a speed of 1.2 104 m/s in a circular path of radius of 1.8 cm inside a solenoid. The magnetic field of the solenoid is perpendicular to the plane of the electron's path. The solenoid has 25 turns per centimeter.
(a) Find the strength of the magnetic field inside the solenoid.
T
(b) Find the current in the solenoid.
mA

2007-04-26 08:09:25 · 1 answers · asked by Nate E 1

2007-04-26 08:08:47 · 3 answers · asked by Anonymous

It is desired to construct a solenoid that will have a resistance of 4.00 (at 20°C) and produce a magnetic field of 4.00 10-2 T at its center when it carries a current of 4.00 A. The solenoid is to be constructed from copper wire having a diameter of 0.500 mm. If the radius of the solenoid is to be 1.00 cm, determine the following.
(a) the number of turns of wire needed to build the solenoid
turns
(b) the length the solenoid should have

2007-04-26 08:08:25 · 1 answers · asked by Nate E 1

You'd think in space, since there is no up and down, at times one of the ships would be "upside down" or "sideways", etc...

And I don't think coordinates would matter...or would it?

2007-04-26 07:41:31 · 5 answers · asked by Anonymous

A. high speed collisions between reactants atoms.
B. energy liberated as bonds break.
C. the sun
D. none of the above
E. energy absorbed as bonds break

2007-04-26 07:12:53 · 3 answers · asked by ladona c 1

Are There Any Situations, Theorectical or Real, Where this is Not True?

2007-04-26 07:05:34 · 4 answers · asked by Anonymous

What would happen in 2 batteries in series push in opposite directions? Thanks

2007-04-26 06:53:15 · 3 answers · asked by Jade 1

In myt science class we have to measure 20 seconds and who ever comes up with the most creative way wins. What I want is a very good idea!

2007-04-26 06:50:15 · 3 answers · asked by nbastar51 1

is there a way to block a magnet field without any repulsion between the magnetic object and the object blocking its field?

2007-04-26 06:42:58 · 4 answers · asked by Anonymous

What is the spring constant of longer piece???
(EXPLAIN HOW)

2007-04-26 05:59:35 · 6 answers · asked by Anonymous

The gravitational force experienced by A how many times that by B?
(EXPLAIN HOW)

2007-04-26 05:54:23 · 3 answers · asked by Anonymous

2007-04-26 05:50:11 · 7 answers · asked by Sean 1

Float a water-soaked ping-pong ball in a can of water held more than a meter above a rigid floor. Then drop the can.

What happens to the ball as both drops? What does this say about surface tension?

When happens to the ball when it makes impact with the floor?

2007-04-26 05:12:13 · 3 answers · asked by Vienna 3