Physics

Physics- Hooke's Law Problem

Question: Consider a spring that stretches 4cm when a load of 10 N is suspended from it. How much with the spring stretch if an identical spring also supports the load? (Neglect the weights of the spr

Easy Current electricty problem, 10 points, waiting for answers.. Thanks..

I stuck into this problem, plz help, Circuit is http://picturepush.com/public/5541688 Find charges on 3uF and 6uF capacitors. Thanks in advance-After a long time, i.e, when steady state is reached,

How is the energy of a wave related to its amplitude

A) As energy decreases, the amplitude decreases B) As energy increases, the amplitude decreases C) As energy increases, the amplitude increases D) Energy does not affect amplitude-c

Physics hydrogen atom

Find the energy of a hydrogen atom whose electron is in the (a) n = 2 state and (b) n = 3 state.-energy of atom or energy of electron?.. energy of electron in nth shell in H atom =-13.6/n^2 eV per ato

Isobaric process.........

in an isobaric process it is said that pressure is constant and volume changes....does it mean that pressure will remain constantWHILE volume changes OR volume changes till pressure of system and exte

What is the frequency of up-and-down oscillations of the wheel

The wheel of a sports car is suspended below the body of the car by a vertical spring with a spring constant 1.1 x 104 N/m.The mass of the wheel is 14 Kg and the diameter of the wheel is 61 cm.What is

Why are electric light bulbs shaped the way they are

Question for my physics class......what is the reason for the shape of the electric light bulb (in terms of science??)-A sphere is the strongest shape for a glass object, and for a light bulb, which r

What is the Magnitude of the acceleration of the child

A child is riding a merry-go-round which has an instantaneous angular speed of 1.25 rad/s and an angular acceleration of 0.745 rad/s^2. The child is standing 4.65m from the center of the merry-go-roun

The wheel of a sport car is suspended below the body of the car by a vertical spring with a spring constant

The wheel of a sport car is suspended below the body of the car by a vertical spring with a spring constant 1.1 x 104 N/m.The mass of the wheel is 14 Kg and the diameter of the wheel is 61 cm.What is

College physics help if can

Assume that a 100W light bulb gives off 2.50% of its energy as visible light. How many photons of visible light are given off in 1.00 min? (Use an average visible wabelength of 550 nm.)-Assume that a

Newton verses Einstein, which was the greater intellect

I know they lived in different time periods so very difficult to say. But I would have to say Newton as he invented a new math (calculus) to proceed with his physics, verses Einstein who needed help

A mass m=9.0 kg is attached to a spring and allowed to hang in the earth gravitational field. The spring stret

A mass m=9.0 kg is attached to a spring and allowed to hang in the earth gravitational field. The spring stretches 3.0 cm before it reaches its equilibrium position. If allowed to oscillate, what woul

Magnetic field varies as you rotate a wire- challenging problem!

A wire segment of length 4.75 cm carries a current of 3.46 A is placed between the poles of magnet. For one orientation of the wire in the field, the wire experiences a magnetic force of magnitude 0.3

Jack and Jill are riding on a merry-go-round.

Jack is a distance R from the center of the merry-go-round and Jill is a distance 2.1 R from the center. (a) What is the ratio of Jack angular speed to Jill angular speed? (b) What is the ratio of J

Physics joules and wattss

5.6X10^5 Joules For how long could this amount of energy run a 100W lightbulb?-1Watt = 1J/secTime = Energy / Power Time in sec = 5.6 x 10^5 J/ 100 Watts = 5600 sec = 1hour 33 min 20 sec