Physics - February 2007

Match each term with its appropriate equivalence on the right.

1. 7.65 cm
2. 76.5 dm
3. 765 mm
4. 765 m
5. 76.5 m

match to:
a.76.6cm
b.7.65m
c.765dm
d.0.0765m
e.0.765km
f.0.00765

Match each term with the correct example on the right.

6. matter
7. weight
8. mass
9. gravity
10. acceleration

match to:
a. 55 newtons of downward force
b.a chunk of basalt rock
c. 15 feet/second/second
d. 9.8 meters/second/second downward force due to the earth's mass
e. 4.5 kilograms

2007-02-28 09:40:18 · 1 answers · asked by calebs_baby_girl05 1

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Voltage U = Uo sin ωt is applied to the infinite endless circuit,
consisting of capacitors and inductors, as shown at this picture:

http://alexandersemenov.tripod.com/circuit/index.html

Uo = 20 V, ω = 2π x 60 Hz
What power is fed into the circuit?

2007-02-28 08:54:34 · 1 answers · asked by Alexander 6

Can you name something that is infinite and not infinite both at the same time?

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We know that an aluminum will not be magnetized by a magnet..But why is it that when you roll a magnet on an aluminum rod,you will see that the magnet slows down?Meaning, there is magnetism going on.What's the explanation on this?

2007-02-28 08:27:04 · 3 answers · asked by p319 1

Hello, all. I need a little guidance on solving a Physics problem. I don't want anyone to do it for me or give me the answers -- I need some help, though in understanding how to solve it. Please let me know what equations I need in order to find the answers to the following:

A rope exerts a constant horizontal force of 250 N to pull a 60-kg crate across the floor. The velocity of the crate is observed to increase from 1 m/s to 3 m/s in a time of 2 seconds under the influence of this force and the frictional force exerted by the floor on the crate.

a.) What is the acceleration of the crate?
b.) What is the total force acting upon the crate?
c.) What is the magnitude and frictional force acting on the crate?
d.) What force would have to be applied to the crate by the rope in order for the crate to move with constant velocity? Explain.

Thanks in advance for any help on this!

2007-02-28 08:26:58 · 6 answers · asked by geoxena 3

Note* The CD Player was not on
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Note* THAT WAS THE WORST FEELING IN THE UNIVERSE IT SHOCKED MY BRAIN

2007-02-28 08:24:50 · 3 answers · asked by HJC Mac 1

How much would Earth’s average temperature have to rise to be significant?

If possible please provide a source.

Thank you!

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my hubby would like to know if your driving a car with the headlights on at the whilst driving at the speed of light, would the headlights still illuminate at the front of the car

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I thought light hass no mass,so then,why does it bend when acted upon by gravity???...Tom Science 4

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Please explain throughingly :D
i want to know what were his thinking processes and steps
along the way.

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2007-02-28 06:53:08 · 8 answers · asked by Anonymous

Find the potential difference between the points on the x-axis at x = 1 m and x = 2 m. Answer in units of kV.

To begin this problem, I simply found the electric field ateach point by plugging in the two distances into the E-field equation. After this, I really wasn't sure where to go. I know that potential difference is equal to the integral of the dot product between the E-field and distance. Unfortunately, I'm not sure how to apply this concept to this problem. Maybe integrating Ex would help? Any help would be appreciated.

2007-02-28 06:50:10 · 3 answers · asked by mmrage318 1

Since phase changes of matter are accompanied by the absorption or release of energy such as a solid to a liquid. Can annihilation be conisedered a type of phase change?

2007-02-28 06:45:34 · 1 answers · asked by Anonymous

...and given by E = Ex i + Ey j, where Ex is 3 N/C and Ey is 4 N/C. What is the potential difference Va - Vb? Answer in units of V.

I wasn't really sure where to begin with this one. There's no charge given, and all I can come up with is that E should be the addition of Ey and Ex, or 7 N/C. I figured you have to first find out what Va is using this total E value, but I was sure which formula for electric potential to use to solve it. Any help would be appreciated.

2007-02-28 06:41:07 · 4 answers · asked by mmrage318 1

im having trouble with these questions. ive been sitting here for a couple hours trying to figure them out. they are for a worksheet. please help.

Match each term with its appropriate equivalence on the right.

1. 7.65 cm a. 76.5 cm
2. 76.5 dm b. 7.65 m
3. 765 mm c. 765 dm
4. 765 m d. 0.0765 m
5. 76.5 m e. 0.765 km
f. 0.00765 m

Match each term with the correct example on the right.

6. matter a. 55 newtons of downward force
7. weight b. a chunk of basalt rock
8. mass c. 15 feet/second/second
9. gravity d. 9.8 meters/second/second downward force due to the earth's mass
10. acceleration e. 4.5 kilograms

2007-02-28 06:37:27 · 2 answers · asked by calebs_baby_girl05 1

I just had an exam and want to know if I did this right or not. An object shoots off a building straight at 12 ft/s, and falls 260ft to the ground, what velocity does it hit at?

(1/2mVi)+(mgHi)=(1/2mVf)+(mgHf)

mass cancels
Final Height is 0

2((1/2Vi)+(gHi))=Vf

Plug in numbers and solve. I got 166.3 ft/s. Is this right or wrong?

2007-02-28 06:30:49 · 5 answers · asked by ? 2

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2007-02-28 06:13:28 · 4 answers · asked by Anonymous

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2007-02-28 05:38:56 · 4 answers · asked by laquay723 1

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