Physics - October 2006

on earth you weigh 105 pounds and on the sun you weigh 2800 pounds explain to me how this can be

2006-10-16 12:00:07 · 6 answers · asked by kh2anime 1

Okay, so lets say that there is a train. One person is standing in the train, and another is outside looking in. The person in the train has a ball and a flashlight. We know that relative to the person standin on the ground, that the ball is traveling whatever speed the ball was thrown plus the speed of the train. We also know that if the person in the train turns on the flashlight, the light is still going 299,792,458 meters per second relative to the person on the ground. So, here is my question: Somehow, we get the train to go at half the speed of light. If the person on the train could somehow throw the ball at half the speed of light, wouldn't the ball be going AT the speed of light, and be breaking the laws of physics? If the ball COULD in fact go that fast, would IT itself BECOME light? Thoughts?

2006-10-16 11:43:38 · 12 answers · asked by aggies_2011 2

A 9.5 kg monkey is hanging by one arm from a branch and is swinging on a vertical circle. As an approximation, assume a radial distance of 85 cm between the branch and the point where the monkey's mass is located. As the monkey swings through the lowest point on the circle, it has a speed of 2.2 m/s.

(a) Find the magnitude of the centripetal force acting on the monkey.
N
(b) Find the magnitude of the tension in the monkey's arm.
N

I got part A right with 54.1

Now for part b, I did 54.1^2 + 93.1^2 (I got that number from 9.5 * 9.8) = T^2 but that is wrong.. what is the correct way to do part b?

2006-10-16 11:33:50 · 2 answers · asked by Confused 1

can someone explain how different objects have different amount of gravitayional force.use objects you know of to help me understand

2006-10-16 11:33:11 · 5 answers · asked by kh2anime 1

2006-10-16 11:28:11 · 7 answers · asked by ryan 1

2006-10-16 10:29:55 · 5 answers · asked by Beavis 1

A rock dropped on the moon will increase its speed from 0 m/s (its starting speed when first dropped) to 4.9 m/s in about 3 seconds. What value do you calculate for the acceleration of gravity on the moon?

A. 4.9 m/s2 up
B. 1.63 m/s2 down
C. 9.8 m/s2 down
D. 14.7 m/s2 up

2006-10-16 10:23:39 · 3 answers · asked by bombshellimage 1

1.420=
10000=
0.010=
3.0x10^2=
50=
0.0090=
4.230=
15000000=
1,720=
75.00=

2006-10-16 10:12:39 · 7 answers · asked by Austin L 1

i have to choose a quote and write a paper on it and i was wondering if i could get more in depth info on this quote.. i know it has something to do with quantam theory.

2006-10-16 10:10:17 · 13 answers · asked by alberta 1

Is the velocity {(df -di)/(tf-ti)} of a steel and a glass sphere ball constant for a given sphere and height linear? Explain your answer. *df means finial distance, di means initial distance, tf final time and ti initial time*

2006-10-16 09:51:26 · 1 answers · asked by dreamz 4

tell me whether time is absolute or instable

2006-10-16 09:38:10 · 4 answers · asked by zzzalex 2

2006-10-16 09:37:49 · 3 answers · asked by veejay 1

A skier has a horizontal velocity of 104.5 km/h at the end of a ramp, before a horizontal surface (the velocity is where the ramp and ground meet). The snow on both the horizontal surface and the ramp produces a coefficient of friction of .12 with the skis. If the initial velocity with which the skier started is twice the velocity of the final velocity (at the end of the horizontal surface), what distance will the skier travel overall?

I think that I need to divide out the ramp and horizontal surface into two parts, but I don't know what to do after that. Do I use Net Work is equal to change in Kinetic Energy or do I use Work of Friction is equal to Change in Kinetic Energy + Change in Potential Energy?

I would appreciate it if someone showed me how to do this type of problem!

2006-10-16 09:35:22 · 2 answers · asked by shayonsaleh 2

After one has drawn 2 graphs, one of displacement vs. time and the other graph displacement vs. time squared... some questions refer to their relationships, plz could someone assist me in this?

1a.What type of relationship exists between displacement and time? 1b.What is the name of the line you would obtain?

2a. What type of relationship exists between displacement and time squared? 2b. What is the name of the line you would obtain?

2006-10-16 09:32:39 · 2 answers · asked by dreamz 4

2006-10-16 08:15:17 · 9 answers · asked by vinnie C 3

2006-10-16 08:14:15 · 9 answers · asked by Shalom R 3

S monkey is strapped to a sled and both are given an initial speed of 2.0 m/s up a 24.0° inclined track. The combined mass of monkey and sled is 14 kg, and the coefficient of kinetic friction between sled and incline is 0.20. How far up the incline do the monkey and sled move?

2006-10-16 08:06:46 · 3 answers · asked by activegirl 1

A projectile is launched with a speed of 37 m/s at an angle of 59° above the horizontal. What is the maximum height reached by the projectile during its flight?

2006-10-16 07:53:13 · 2 answers · asked by activegirl 1

A 7.0 kg bowling ball moves at 2.35 m/s. How fast must a 2.20 g Ping-Pong ball move so that the two balls have the same kinetic energy?

2006-10-16 07:51:49 · 4 answers · asked by activegirl 1

, the forces resisting the motion, including kinetic friction and air resistance, total 635 N. The mass of the bobsled and its riders is 275 kg. (a) What is the Magnitude of the force propelling the bobsled forward? (b) What is the magnitude of the net force that acts on the bobsled?

2006-10-16 07:46:31 · 2 answers · asked by meggers 3

A single conservative force F(x) = bx + a acts on a 3.28 kg particle, where x is in meters, b = 6.49 N/m and
a = 4.05 N.

#1 As the particle moves along the x axis from X1 = 0.936 m to X2 = 4.03 m, calculate the work done by thsi force in units of J.

#2 Calculate the change in potential energy of the particle in units of J.
THINK THE ANSWER TO THIS IS 62.3895 ??

#3 Calculate the particle's initial kenetic energy at X1 if its finals speed at X2 is 19.8 m/s (in units of J).

2006-10-16 06:46:39 · 4 answers · asked by Dee 4

A 173 g object is attached to the end of an unstressed vertical spring (of constant 32.8 N/m) and then dropped. Acceleration of gravity is 9.8 m/s^2.

1. How far does it drop before coming to rest momentarily (in units of m)?

2. What is the maximum speed (in units of m/s)?

2006-10-16 06:32:58 · 2 answers · asked by Mariska 2

Have block B on table weight=711 N, coefficient of static friction is 0.25. Have cord attatched horizontally to B, goes to knot. Another cord is attatched to knot at 30 deg. from horizontal and is attatched to wall. Another cord from knot is vertical, and is attatched to block A. What is the maximum weight of A that will allow the system to remain stationary?

2006-10-16 06:12:35 · 3 answers · asked by joe s 1

2006-10-16 06:01:37 · 11 answers · asked by derek6711 3

1. There are 3 resisitors: R1 (103mA) is attached to a circuit that flows to the right into a node which splits into 2 additional resistors (which are in parallel). R2 (77.5mA) is on the top branch. R3, has an unknown current, which I believe is 22.5mA (If I am using the Kirchoff's Law appropriately - if not please let me know).

2. If the resistance on R3 =4.70kOhms, what is the voltage drop across R2 using Kirchoff's Voltage Law?

3. What is the resistance of R2?

4. If the EMF applied to the circuit is 225V, what is the voltage drop across R1?

5. What is the resistance of R1?

I WILL PICK A BEST ANSWER!!!

Thanks in advance :-)

2006-10-16 05:55:23 · 5 answers · asked by BugGurl 3

2006-10-16 05:46:51 · 13 answers · asked by Anonymous

only one force acts on an object. Can the object have zero acceleration? Can it have velocity?

please explain with an example.....

2006-10-16 05:33:36 · 8 answers · asked by Anonymous

A fisherman yanks a fish out of the water with an acceleration of 4.5m/s.s using very light fishing line that has a 'test' value of 22N. The fisherman unfortunately loses the fish as the line snaps. What can you say about the mass of the fish?

2006-10-16 05:23:29 · 5 answers · asked by Anonymous

2006-10-16 05:05:13 · 8 answers · asked by kudzai c 1

would the friction experienced by the car and the road increase? if so, how can this be calculated?

2006-10-16 04:54:58 · 13 answers · asked by ann 2