Light with a frequency of 6.1*10^14 Hz is measured from a star. This type of star is known to produce light with a frequency of 6.0*10^14 Hz. How fast is the star moving away from toward Earth?

Light with a frequency of 6.1*10^14 Hz is measured from a star. This type of star is known to produce light with a frequency of 6.0*10^14 Hz. How fast is the star moving away from toward Earth?

A 4.60 kg particle moves along the x axis. Its position varies with time according to x = t + 1.8t3, where x is in meters and t is in seconds (a) Find the kinetic energy at any time t...

A 50 loop circular coil has a radius of 0.03 m. It is oriented so that the field lines of a magnetic field are normal to the area of the coil. Suppose that the magnetic field is varied...

A slotted link is rotating about fixed pivot O with a counterclockwise angular velocity of 3 rad/s, and a clockwise angular acceleration of 2 rad/s2. The movement of the link is causing a rod to slide...

Two objects slide over a frictionless horizontal surface. The object A with a mass of 5000g is moves at a speed of 4.5m/s toward the object B (mB= 2500g) which is initially at rest. After the collision,...

Besides the gravitational force, a 3.35-kg object is subjected to one other constant force. The object starts from rest and in 1.20 s experiences a displacement of (4.15î − 3.30ĵ) m, where the direction...

What is the magnetic field in air 0.05 m away from a long straight wire carrying current of 15A? An air-core solenoid with 2000 loops is 0.60 m long and has a...

An 0.050 m long wire carrying current of 30 A is placed in a uniform magnetic field, B = 0.80 T, such that the wire is oriented so it's length runs perpendicular to the field. Find the magnitude...

An electric motor rotating a workshop grinding wheel at a rate of 212 rev/min is switched off. Assume constant angular deceleration of magnitude 2.94 rad/s 2 . Through how many revolutions does the...

calculate sine waves

A 10 µC charge is at the origin. A -5 µC charge is on the x-axis 10 cm to the right of the origin. At what point other than at infinity can a 1 µC charge be placed so that there will be no net electrostatic...

when do I use the absolute value brackets on the point charge? E = k (q)/r^2 vs E = k |q|/r^2 ?

A musical instrument has an open/closed air tube which is 32 cm long. If the speed of sound in air is 350 m/s then find the fundamental frequency for this instrument. Give your answer ... in terms...

On a stringed instrument, the n=3 harmonic gives a frequency of 419 Hz. The length of the string is 0.48 meters. Find the wave-speed on this string. in terms of meters/second. to...

A 1.5 tonne car travelling at 100km/h suddenly brakes. The brakes provide an overall force of 50 times the normal reaction. Calculate the acceleration of the car.

The figure shows a thin rod of length L and charge Q. (Figure 1) Part A Find an expression for the electric potential a distance x away from the center of the rod on the axis of the rod...

The sodium lamp used in a physics laboratory gives out light uniformly. Suppose that the lamp uses 40 W. Calculate the magnitude of electric field?

It ask you how many seconds are there in 1 year

Two charges q1 = −3.20 nC and q2 = +8.15 nC are at a distance of 1.28 µm from each other. q1 is fixed at its location while q2 is released from rest. (a) What is the kinetic energy of...

A) A proton is fired from far away toward the nucleus of a mercury atom. Mercury is element number 80, and the diameter of the nucleus is 14.0 fm. If the proton is fired at a speed...

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