Physics - September 2006

A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 8.5m/s at an angle of 17degrees below the horizontal. It strikes the ground 3 seconds later. how far horizontally from the base of the building does the ball strike the ground? What is the height from which the ball was thrown? How long does it take the ball to reach a point 10.0m below teh level of launching.

2006-09-30 07:40:33 · 2 answers · asked by Jayu P 1

2006-09-30 07:34:37 · 10 answers · asked by Anonymous

I am talking about the case in the simple pendulum .

2006-09-30 07:19:56 · 2 answers · asked by Anonymous

I have a 75 watt dc to ac power converter (that I want to use while car camping) and an aerobed with an AC motor - UL sticker on motor says: 120v AC, 60 Hz, 1.0 amps. Will this power converter provide enough juice to inflate my aerobed?

2006-09-30 06:46:53 · 4 answers · asked by its_kgd 1

2006-09-30 06:39:16 · 27 answers · asked by ksvrdy10 1

2006-09-30 06:23:46 · 17 answers · asked by Richard A 1

2006-09-30 06:21:18 · 16 answers · asked by Chacko_J_Chembukkavu 1

2006-09-30 06:03:03 · 10 answers · asked by Anonymous

2006-09-30 05:58:27 · 6 answers · asked by Chacko_J_Chembukkavu 1

A 7.23 kg block is on top of a table (frictionless, horizontal surface). The first block is connected by a cord passing over a pulley to another block of mass 4.09 kg which hangs in the air over the right side of the table. The cord is weightless & massless and does not stretch. The pulley has no friction or rotational inertia. The acceleration of gravity is 9.8 m/s^2.

Calculate the acceleration of the first block (in m/s^2). I got .361307 and then recalculated and got -2.71837 m/s & doubt either is correct (sigh loudly).

Calculate the tension in the cord (answer in N).

Can't figure out what I am doing wrong....if I am sure I understand and have the right answers it will help me move on to other problems. Thanks in advance for any help.

2006-09-30 05:57:57 · 3 answers · asked by Dee 4

G = t x C^3 / M
G=gravity constant
t=time
M=mass
C=speed of light

2006-09-30 05:10:25 · 2 answers · asked by goring 6

2006-09-30 04:57:48 · 7 answers · asked by goring 6

2006-09-30 04:52:18 · 6 answers · asked by Anonymous

What would be his weight if his mass is 100 kilos?

2006-09-30 04:42:44 · 3 answers · asked by goring 6

the way I know it Revolvers has a huge pershot damage (like the Colt Python maby due to .357magnum CALIBER, is it?) but is there and Pistol with power greater than or equal to a Revolver or Machine Gun. If you anywahere physical to buy it, please tell me.

2006-09-30 04:42:16 · 2 answers · asked by Anonymous

2006-09-30 04:28:37 · 6 answers · asked by goring 6

Yes, I do realize that I am still just 14 years old. Just answer the question, okay?

2006-09-30 04:15:39 · 17 answers · asked by rokkon 3

One block (3.3 kg) is on top of a table and is connected by a massless cord over a frictionless massley pulley to another block(2 kg) which is hanging down over the right side of the table. The system starts at rest. When the masses have moved a distance of 0.431 m, their speed is 1.25 m/s. The acceleration of gravity is 9.8 m/s^2.

What is the coefficient of the friction between m2 (m subscript 2)and the table (answer in N)?

What is the magnitude of the tension in the cord (answer in N)?

Thanks in advance for your input.......

2006-09-30 04:06:34 · 2 answers · asked by Dee 4

How big would the space-ship need to be and what affect would it have on the Earth?.

2006-09-30 03:58:22 · 19 answers · asked by Old Man of Coniston!. 5

As I understand it, objects in the universe cannot be assigned an absolute position in space. Their locations can only be described in relation to other objects.

If this is the case, the two stars forming a binary star, orbiting around their centre of mass, could be considered to be stationary (relative to each other).

Why then do the two stars not fall together due to the gravitational attraction between them?

Does the fact that they don't fall together prove that there is a kind of 3D "cosmic grid" on which all objects can be located?

2006-09-30 03:58:01 · 4 answers · asked by Dr Chris 1

For example, Hoover Dam to LA or Phoenix.

2006-09-30 03:48:02 · 3 answers · asked by FreeAdLists 1

2006-09-30 03:28:16 · 8 answers · asked by kimmy 1

2006-09-30 03:20:39 · 2 answers · asked by goring 6

Chassical physics indicates a field to be the ratio of Force to Mass,and that they call it a Gravity Field. Are there any differences in defining a Field?

2006-09-30 03:15:17 · 4 answers · asked by goring 6

2006-09-30 03:10:28 · 9 answers · asked by arunjp1989 1

A 65kg person is in an elevator accelerating upwards at the rate of 2 m/s/s. if the person was standing on a scale in the elevator, what would the scale's reading show?

2006-09-30 02:55:09 · 4 answers · asked by tiger 1

2006-09-30 02:32:15 · 5 answers · asked by shee ram 1

why must the satellite's orbit lie in the plane of the equator?

2006-09-30 02:14:54 · 4 answers · asked by Anonymous

Which discipline requires greater mental toughness?

2006-09-30 02:12:48 · 4 answers · asked by button 1

'speed of light/sound(flash/beep) does not depends on the speed of the
source'.
Does a continous flow of light depends on the speed of the source?

for light waves
When a photon has high frequency it has lower wavelength. Does that means
that the velocity of light waves never changes with different frequencies or
wavelengths?

for sound waves
what about doppler effect?

2006-09-30 02:01:34 · 6 answers · asked by piti 2