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1. Determine the wavelength of the standard 21-cm hydrogen spectral line that we receive from the galaxy described in the preceding problem. Could such a large redshift lead astronomers to mistake this spectral line for another one that has an intrinsically longer wavelength?
2. The largest known redshift attributed to a speci?c molecule is z = 6.42 from the CO molecule in the quasar SDSS J1148+5251. Find the quasar's distance from us and recession speed relative to us.
3. One of the largest observed redshifts for a galaxy is 8.6 from the galaxy UDFy-38135539. How fast is the galaxy moving with respect to us? How far away is it?
4. (a) Research the different types of supernova and explain why Types Ia, Ib, and Ic are labeled differently.
(b) Why do Types Ib, Ic, and II have more in common with each other than with Type Ia?
A circular coil having 19 turns and a radius of R = 19.2cm carries a current of 3.30A. It is placed in a uniform magnetic field of 62.0mT. What is the magnitude of the torque acting on the coil
Assume that a cement truck with a mass of 10,000 kg hits you while you were stopped at a traffic light, and that you are driving a Yugo with a mass of 750 kg. If the truck was traveling at 15 mph and the crash makes you stick together (you and the..
q1. a car is travelling with a velocity of 88.0 kmh. it accelerates at a constant rate of 20 ms2. if the acceleration
Each of the following objects has a radius of 0.174 m and a mass of 2.79 kg, and each rotates about an axis through its center, Find the magnitude of the angular momentum of each object
as a space shuttle moves through the dilute ionized gas of earths ionosphere the shuttles potential is typically
An unknown substance has a mass of 0.125 kg and an initialtemperature of 104.4°C. calculate the specific heat of the unknown substance
When a crown with mass 14,7 kg is submerged in water, an accurate scale reads only 13.4 kg. Is the crown made of gold
A car initially traveling at 24.7 m/sunder goes a constant negative acceleration of magnitude 1.50 m/s 2 after its brakes are applied. How many revolutions does all tire make before the car comes to a stop, assuming the car does not skid and the t..
A rifle with a weight of 30 N fires a 3.0 g bullet with a speed of 210 m/s. Find the recoil speed of the rifle
22.0g of copper pellets are removed from a 300^\circ \rm C oven and immediately dropped into 70.0mL of water at 19.0^\circ C in an insulated cup. Part A What will the new water temperature be?
A parallel plate capacitor with a capacitance C= 200x10^-12 consists of two copper plates, Calculate the potential(voltage) at a point exactly halfway between the plates
imagine a truck with a mass of 22 metric tons t 1 t1000 kg barrelling down a highway at a speed of 59 mih. what is the
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