An observer on Earth receives a signal of 6.614 THz. Thirty minutes later, he receives another signal, followed by a third signal 24.331 minutes later after the second. The observer on Earth knows that the ship should be sending signals at a 2.500THz. How far away is the ship from Earth and how often is the captain of the ship sending signals according to her watch? (Hint: look up the formula for the Relativistic Doppler Shift.)

PLEASE SHOW ALL WORK!!

Did anyone ever heard about this?I've never seen any serious physicist talk about "mass fluctuations".

Here is the man in his own words: http://www.intalek.com/Index/Projects/Research/woodward1.pdf

And what about this guy: http://aetherwavetheory.blogspot.com/

He claims his theory can explain virtually every unsolved problem in contemporary physics.

1. A damped driven harmonic oscillator with m=12 kg, k=280 N/m, and b=75 kg/sis subjected to a driving force given by F(t) = F₀cos(ωt), where F₀=55 N.

a) What value of ω results in steady-state oscillations with maximum amplitude?

b) What is the maximum amplitude?

c) What is the phase angle?

2. An undamped, driven harmonic oscillator satisfies the equation of motion

where the driving force is switched on at t=0.

a) Assuming a solution of the form x(t) = A(ω)sin(ωt-δ), find expressions for the amplitude A(ω) and the phase angle δ.

A ballistic pendulum consists of a thin rod AB (length = 2.0 m; mass = 1.14 kg) that is rigidly attached to a solid sphere that has a center C, radius = 0.4 m, and mass = 2.45 kg. A bullet (mass = 0.01 kg) is fired at point C with a speed of 675 m/s.
Determine the amount of kinetic energy lost by the system due to the impact.

You will estimate how much slower an ice skater would spin, if a can of soda dropped into her hand while she was spinning. You may model her body as a vertical cylinder of radius 20 cn abd nass 50 kg, spinning about a vertical axis. Assume that shes initially spinning 10 times per second, so that initially wi=20pis-1. Suddenly she is handed the soda can, which is small enough that we can model it as a point-like mass of .33kg, which she holds at a distance 60cm from the axis of rotation. (a) find nthe moment of inertia of the ice skater before the soda can drops in her hand. (b) find the moment of inertia of the point-like soda can relative to the axis about which the ice skater rotates. (c) find the total moment of inertia of the system consisting of the ice skater and the soda can. (d) find her angular velocity wf, after the soda can falls into her hand and (e) calculate the percentage difference, compared to her initial angular velocity wi.

A person with a mass of 90 kg performs a vertical jump on a force plate. During the initial phase of the countermovement, vertical force is 540 N for 0.234 s. Then the force is increased to 1553 N and stays at that value until the jumper leaves the ground. At what point in time (s), referenced from the initial point of the countermovement, does the person reach the bottom of the movement? Prior to initiation of the countermovement, the velocity of the center of mass was zero.

Is F = μsN an exact equation or an empirical/approximate model? Is it possible to take into account the fundamental interactions? Include reasons for your answer.

A cameraman on a pickup truck is traveling westward at 16 km/h while he videotapes a cheetah that is moving westward 31 km/h faster than the truck. Suddenly, the cheetah stops, turns, and then run at 50 km/h eastward, as measured by a suddenly nervous crew member who stands alongside the cheetah's path. The change in the animal's velocity takes 1.7 s. What are the (a) magnitude and (b) direction of the animal

Part A

An image formed when the light rays pass through the image location, and could appear on paper or film placed at the that location is referred to as a

Part B

Light arriving at a concave mirror on a path parallel to the axis is reflected

Part C

Concave spherical mirrors produce images which

Part D

Light arriving at a convex mirror on a path through the center of curvature is reflected

A chimney (length 10.8 m, mass 588 kg] cracks at the base and topples.  Assume:

- the chimney behaves like a thin rod, and does not break apart as it falls.

- only gravity (no friction) acts on the chimney as it falls.

- the bottom of the chimney pivots, but does not move.

Find the linear speed of the center of mass of the chimney, in m/s, just as it hits the ground

A chimney (length 13 m, mass 479 kg] cracks at the base and topples.  Assume:

- the chimney behaves like a thin rod, and does not break apart as it falls.

- only gravity (no friction) acts on the chimney as it falls.

- the bottom of the chimney pivots, but does not move.

Find the linear speed of the very top of the chimney, in m/s, just as it hits the ground.  

A 13.7 kg cart travels at constant speed, and its four wheels are rolling without slipping. The wheels are disks (radius 0.134 m, mass 6.05 kg), and they turn at constant ω = 26.4 rad/s. Find the total kinetic energy of the cart.

a 440 kg bear gradping vertical trees slides down at constant velocity. what is the friction force that acts on the bear

Suppose you have three polarizing filters, with the second at an angle of 41° to the first and the third at an angle of 90° to the first.

θ₁ = 41°

By what percent will the original intensity of unpolarized light be reduced to after passing through all three filters?

One solenoid is centered inside another. The outer one has a length of 45.0 cmcm and contains 6750 coils, while the coaxial inner solenoid is 5.00 cmcm long and 0.150 cmcm in diameter and contains 17.0 coils. The current in the outer solenoid is changing at 35.5 A/sA/s .

A) What is the mutual inductance of these solenoids?

Express your answer in microhenrys.

B) Find the emf induced in the inner solenoid.

Express your answer in volts.