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A. You are in a spaceship travelling at 0.99c. You notice something green (λ= 520nm) in your window. If it is a forward facing mirror, what was the wavelength in the frame it was emitted?
B. What would the answer to part A be if you saw this light out of a rear facing window?
q1. a toroidal solenoid has a mean radius of 11.0 cm and a cross-sectional area of 5.00 cm2 and is wound uniformly with
When an open-faced boat has a mass of 5150 kg, including its cargo and passengers, it floats with the water just up to the top of its gunwales (sides) on a freshwater lake. What is the volume of the boat
How many drops of water are in all the oceans on earth? Assume that contains 25 drops of water. Remember that this is an order-of-magnitude problem, so you should expect that you will only find rough estimates for the numbers you require.
An electron accelerated from rest through a voltage of 470 V enters a region of constant magnetic field. what is the magnitude of the magnetic field
A spinning top spinning at 16rad/s takes 88.9s to come to a complete stop. Find the angular acceleration of the top
A screen is placed 51.0 cm from a single slit that is illuminated with light of wavelength 677 nm. If the distance between the first and third minima in the diffraction pattern is 2.80 mm, what is the width of slit.
What are the tensions T1 through T5 and force F needed to lift the box with an acceleration of 0.13 m/s2? see the pic 2. You are playing tetherball with your friend, when you both get so enthralled in the motion of the ball that you stop hitting i..
A race vehicle driver must average 204.0 km/hover the course of a time trial lasting ten laps. find what average speed must be maintained for the last lap
Two charges are placed between the plates of a parallel plate capacitor. One charge is +q1 and the other is q2 = +4.14C. The charge per unit area on each plate has a magnitude of = 1.88 × 10-6 C/m2.
To focus a camera on objects at different distances, the converging lens is moved toward or away from the film, so a sharp image always falls on the film. A camera with a telephoto lens (f = 215.0 mm) is to be focused on an object located first at..
A compass originally points North; at this location the horizontal component of the Earth's magnetic field has a magnitude of 2e-5 T. What is the magnetic dipole moment of the bar magnet
The nucleus of a helium atom contains two protons. In a simple model of this nucleus, What is the electric potential energy of the two protons
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