Physics - June 2007

how does the flux get affected?

2007-06-17 18:51:23 · 3 answers · asked by emmy 2

how scienctists create weigh-less condition on earth for experimental purposes

2007-06-17 18:25:22 · 4 answers · asked by sadi 1

A cell has an internal resistance of 0.50 W. It has a terminal voltage of 1.4 V when connected to a 5.0 W external resistance. What will its terminal voltage be if the 5.0 W resistor is replaced by a 10.0 W resistor?



I need your explanation, of course.

2007-06-17 18:18:21 · 2 answers · asked by heyheyhey 2

If a cube of dimensions on 3*4*5 coloured with three different colors namely Red,Green,Black are painted on opposite corners of the cube.this cube is cut down into 78 smaller cubes.Of these 78 , 73 are smaller in dimension & remaining 5 are bigger than remaining but of equal dimension.

From these given information 5 quos were asked.They are of this type
i)How many cubes are there painted with red colr?
ii)How many cubes are there of painted on three sides?
iii)How many cubes are there of painted on two sides?
iv)How many cubes are there of painted on only one side?
v)How many cubes are of unpainted?

2007-06-17 17:27:05 · 1 answers · asked by Pavithra M 1

choose the air bag case with the highest initial velocity(0.55 m/s). Assume the initial kinetic energy is dissipated by the air bag and the average over-pressure is 850 Pa (Pa is an SI unit, the pascal which equals 1 N/ m^2). what volume of air (in m^3) was pushed out of the bag? pls convert the answer to cubic centimeters,
1/2 mv^2 = pv
p=pressure
v=volume
w=integral pdv.
thanks so much!!!!!!!!!

2007-06-17 16:58:32 · 1 answers · asked by emilyz 2

For example - decade, century, millennium - decimeter, centimeter, millimeter - going in opposites in "quantity"!

2007-06-17 15:51:28 · 7 answers · asked by Sara G 1

Why do tires on cars look like they are going backwards when an automoblie is moving fast? They rims have the appearance of the tire spinning backwards instead of forward.

2007-06-17 15:14:13 · 3 answers · asked by Sylvester G 1

2007-06-17 15:09:35 · 1 answers · asked by daniel w 1

net force to the left with decreasing magnitude
net force to the left with increasing magnitude
net force to the left with constant magnitude
net force = 0
net force to the right with constant magnitude
net force to the right with increasing magnitude
net force to the right with decreasing magnitude

2007-06-17 14:41:47 · 1 answers · asked by Ashley 2

I want to limit a 3A current to 1A.

2007-06-17 14:35:48 · 7 answers · asked by Ma77hew 3

f(g(8))

f(x)= 1/x-4
g(x)= 1/x

2007-06-17 14:25:50 · 3 answers · asked by jboufe 2

The fine structure constant? The lack of a quantum theory of gravity? Wave particle duality? Weakness of gravity? Information Paradox? Something else perhaps?

Im just curious to what you all think. Be free with your terminology I have a 4 year physics degree.

2007-06-17 13:38:48 · 11 answers · asked by kennyk 4

If you place a cigarrette box, matchbox whatever on the surface of a mirror, a square one is preferable, so that it runs along the one side it will reflect what is visible in the mirror. If your packet is along the edge you will see three sides reflected.

If you lift one end of the box/packet up so that it is at 45 degrees to the mirror you will see as you lift it the bottom becomes reflected as well.

So to recap, you now have a mirror on the table, a box resting along its one side and elevated to 45 degrees.

The end of the box has now dissapeared from view in the reflection because at 45 degrees the edge of the box is stopping the reflection.

Holding the box steady move the mirror round, you will find that by looking at the mirror from a low angle the end will come into view again.

Reflections cannot bend unless 2 mirrors are used, so how come you can see this end while it is being blocked by the elevated edge of the box ?

2007-06-17 13:09:38 · 4 answers · asked by FMAACMSkipppy 4

If two objcects never actually touch, what are we feeling when we feel different objcects? I understand the concept of the atoms repelling other atoms, but if all atoms just repel other atoms, why does plastic feel like plastic and wood feel like wood etc. Also whats happening when fingerprints are being left on an objcet? are the atoms of the oil kind of floating above the object?

2007-06-17 12:52:23 · 5 answers · asked by Anonymous

2007-06-17 12:38:23 · 3 answers · asked by Anonymous

An 8.9kg mass (M1) is attached to a light cord that passes over a massless, frictionless pulley. The other end of the cord is attached to a 3.9kg mass (M2). The acceleration of gravity is 9.8 m/s^2.
See pic http://www.fearofphysics.com/Probs/Thumbs/mech040fig01.jpg

1) Use the conservation of energy to determine the final speed of the first mass after it has fallen (starting from rest) 7.2m. (Answer in units of m/s

2007-06-17 12:35:24 · 2 answers · asked by Luna 2

A coin is placed 31cm from the center of a horizontal turntable, initially at rest. The turntable then begins to rotate. When the speed of the coin is 130 cm/s (rotating at a constant rate) the coin just begins to slip. (the acceleration of gravity is 980 cm/s^2).

1) what is the coefficient of static friction between the coin and the turntable?

2007-06-17 12:34:03 · 1 answers · asked by Luna 2

A swing carousel consists of rotating circular platform 11m in diameter (5.5m radius) from which 10 kg seats are suspended at the end of 2.57m massless chains. When the system rotates the chains make an angle of 17.2 degrees with the vertical.

1)what is the speed of each seat? (Answer in units of m/s)
2)If a child of mass 28.8 kg sits in a seat, what is the tension in the chain for the same angle? (answer in units of Newton)

2007-06-17 12:32:21 · 1 answers · asked by Luna 2

When a wheel or axis makes one revolution it travels a distance of 2*pie*r radians. How does that help in making the car travel the greatest distance?

2007-06-17 11:55:50 · 1 answers · asked by bum 1

When I open my car door on a really hot day, I can actually see the shadow of hot air exiting my car. How is this possible???

2007-06-17 11:54:55 · 3 answers · asked by Anonymous

Please help me I am completely lost with this problem....

Explain how to reduce high blood pressure and the physics of why it works?

2007-06-17 10:12:49 · 3 answers · asked by Anonymous

I really don't think it does. It just tells us that we can't know the exact outcome of a situation, because by observing it we change it. However, that doesn't mean we change the laws of physics by observing the situation.

Other ideas?

2007-06-17 09:49:17 · 9 answers · asked by Anonymous

1. which particles in the atom move when electric charge is transferred from one atom to another? explain why.

2. you want to but a new comb tor reduce the problem of flyaway hair on dry winter days? what should the comb me made up of? explain why.

2007-06-17 09:47:17 · 3 answers · asked by Anonymous

A 74.0 W and a 44.0 W resistor are connected in parallel. When this combination is connected across a battery, the current delivered by the battery is 0.285 A. When the 44.0 W resistor is disconnected, the current from the battery drops to 0.150 A. Determine the emf of the battery.

2007-06-17 09:39:33 · 5 answers · asked by Anonymous

A 56.0 W resistor is connected in parallel with a 118 W resistor. This parallel group is connected in series with a 15.0 W resistor. The total combination is connected across a 18.0 V battery. (a) Find the current and (b) the power disspated in the 118- W resister.

2007-06-17 09:38:37 · 2 answers · asked by Anonymous

Why objects of different configurations drop at different rates ?(due to air resistance), whats the relationship between this question and above one?

I forgot the G=mg, i dont know how to explain, thank you.

What is the earth’s elliptical orbit?
How the circulatory system works

2007-06-17 09:35:58 · 4 answers · asked by aipingd 1

the text book I need the solutions manual for is "physics for engineers and scientists" third edition, hans c. ohanian and john t. markert. volume 1.

preferably the teacher's solution manual with the answers to the even problems too! Thanks. =)

2007-06-17 09:32:35 · 3 answers · asked by yahoo answers 1

black cave?... also do you agree that vibration is extremely powerful?

2007-06-17 09:14:52 · 1 answers · asked by Brian B 1

If you're relieving yourself in say a stream or a lake, and lightning decides to test the waters of this very lake or stream... are you ******?

2007-06-17 08:28:38 · 4 answers · asked by Anonymous

Determine the time over which this force acts.

2007-06-17 08:16:47 · 2 answers · asked by 2 days after my B day :) 2