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a quasars spectrum shows a shift in spectral lines of 0.158. Use the doppler-shift formula to determine what recession velocity this shift indicates, and then use the Hubble Law to determine the distance to the quasar in Mpc if H= 70 km/sec/Mpc. Be sure to calculate the recession velocity in kms per second.
A bucket is filled with a combination of water (density 1000 kg/m3) and oil (density 700 kg/m3). what is the pressure at the interface between the oil and the water
An 840 kg car needs to round a level curve with a radius of 23m.The driver wants to proceed at 56 kph. How much work does the friction force do on the car
A 50 g ice cube floats in 200 g of water in a 100 g copper cup; all are at a temperature of 0°C. What is the mass of the lead
A 0.25L container is initially filled with air at STP. A piston compresses it adiabatically to a volume of 12.0% of the original volume. Calculate the final temperature and pressure
A circuit consists of an idealized 191 mH in- ductor and a 25.4 µF capacitor. calculate the maximum energy stored in the inductor
A cylinder of mass 8.0 kg rolls without slipping on a horizontal surface. At a certain instant its center of mass has a speed of 11.0 m/s. Determine the translational kinetic energy of its center of mass
An archer shoots an arrow with a velocity of 45.0 m/s at an angle of 50.0° with the horizontal. An assistant standing on the level ground 150 m downrange from the launch point throws an apple straight up with the least initial speed necessary to m..
A car is being pulled out of the mud by two forces that are applied by the two ropes shown in the drawing. The dashed line in the drawing bisects the 30.0° angle.
Traffic is moving along the highway at 52 km/h on a rainy day. Illustrate what is the minimum coefficient of friction between tires and road that will allow cars to negotiate the turn without sliding off the road?
Some sliding rocks approach the base of a hill with a speed of 15.0m/s . The hill rises at 42.0? above the horizontal, Find the acceleration of the rocks as they slide up the hill
A driver traveling at 59 km/h sees a chicken dash out onto the road and slams on the brakes. Accelerating at -7 m/s2, the car stops just in time 24.3 m down the road. What was the driver's reaction time (i.e., the time that elapsed before he engag..
Three point charges of 2.0 ? C, 4.0 ? C, and 6.0 ? C form an equilateral triangle with each side 2.9cm Find the electric potential energy of this distribution
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