Physics Poll Pick An Interesting Fact About Physics And Answer The Questions

Physics questions..... I will choose best answer within 1 minute of answer if it answers my questions complete

1. Not accurate. There is also a charge. Weak and strong force.
You cant discribe all fenomens whit only energy and mass.
E=m*c^2 is actualy just conservation law for mass-energy


2. If you have element whit lot of protons in nucleus (element is distinguished by number of protons or electrons) would imply greater electrostatic force on nucleus. Nucleus is held together whit weak force which must be greater than elecrostatic .

Physics waves question. PLease help will pick best answer. A series of pulses of amplitude 0.23 m are sent?

A series of pulses of amplitude 0.23 m are sent
down a string that is attached to a post at
one end. The pulses are reflected at the post
and travel back along the string without loss
of amplitude.

a-What is the amplitude at a point on the
string where two pulses cross if the string is
rigidly attached to the post? Answer in units
of m.

b-What is the amplitude at a point on the string
where two pulses are crossing if the end at
which reflection occurs is free to slide up and
down? Answer in units of m.

Physics question?........................

On a hot, summer day you put both of your hands on a 420-Kg yellow fire hydrant. This is attached properly to an underground water pipe. With all of your might, you push east on that fire hydrant for exactly 60 minutes. It did NOT move. How much work did you do?

Choose the best answer from the options below:
A “all of your might”

B 1.0 J

C 0.0 J

D 25,200 J

E 7 J

Does anyone know this physics question?

Please choose the best answer with as much accuracy as possible and give your explanation if you answer right I will give you 10 points

A jet has a mass of 40,000 kg. The thrust for each of the four engines is 20,000 newtons. What is the jet's acceleration when taking off?
A. 0.3 meters per second squared
B. 1 meters per second squared
C. 2 meters per second squared
D. None of the above

Help i need help for this physics question?

Choose the correct answer
The mass of a lamb that weighs 110 newtons is about-
A. 1 kg
B. 11 kg
C. 110 kg
D. 1100 kg
E. None of the above
After you choose the answer please state why and it would help if you could tell me an equation for coming up with this answer

I really need help with this PHYSICS QUESTION PLEASE?

For each numbered description below, pick the lettered point(s) on the graph that correspond to the word description. Some questions have more than one correct answer!

http://www.webassign.net/userimages/jlabelle@dartmouth/HW1Agraphscan.gif


(a) velocity is zero


(b) position and speed both are increasing


(c) position is increasing and speed is decreasing


(d) position and speed both are decreasing



(e) position is decreasing and speed is increasing


(f) acceleration is positive



(g) acceleration is negative

Physics question need help, please?

You may want to try asking this question in the Science>Physics section. It isn't appropriate here.

Anyone know the Physics of an ASTROBLASTER?

It's a conservation of momentum problem, basically. The simplest version is two balls, like a tennis ball on top of a basketball.

You drop them, and the bottom ball hits the ground, having a collision with the Earth. Since the Earth is so huge, the bottom ball basically just reflects back with the same speed in the opposite direction. Now it collides with the small ball. Just as the big ball picked up a lot of energy from the ground, the small ball picks up a lot of energy from the big ball, and rockets away. It's more effective than just bouncing the little ball off the ground because the big ball is moving to start with, rather than stationary...like the difference between bunting and swinging at a baseball.