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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 block of ice starts from rest on an apartment building's roof, which slopes at 41° below the horizontal. How far from the building does the block strike the ground
Two lightbulbs operate on the same potential difference. What is the ratio of the current in bulb A to the current in bulb B
A plane leaves the airport in Galisto and flies 170 km 68 degrees east of north and after that changes direction to fly 230 km at 48 degrees south of east, after that it makes an immediate emergency landing in a pasture. When airport sends out a r..
question1a 0.145-kg baseball pitched horizontally at 39 ms strikes bat and is popped straight up to a height of 32 m.
Two blocks (M1 = 2.75 kg and M2 = 6.49 kg) are in contact on a frictionless, horizontal tabletop. What is the contact force between the blocks
Assuming that the ram spring is oriented vertically and is still compressed by 1.17 10-2 m when the downward-moving ram hits the staple, find the speed of the ram at the instant of contact
A electric model train travels at 34.7 cm/s around a circular track of radius 1.61 m. Find the train's period of revolution
A 6.10 g lead bullet traveling at 310 m/s is stopped by a large tree. what is the increase in temperature of the bullet
A person pulls a sled for a distance of 37.0m along the snow with a rope directed at 20 degrees above the snow. how much work is done on the sled by the tension force
A 6.00 g bullet is fired horizontally at two blocks resting on a smooth tabletop, as shown in the top figure, find the speed of the bullet immediately after it emerges from the first block, find the bullet's original speed
The microwave radiation left over from the Big Bang explosion of the universe has an average energy density of 3.89 × 10-14 J/m3
Sam, whose mass is 76.0 , takes off down a 52.0 high, 10.0 slope on his jet-powered skis. The skis have a thrust of 200 . Sam's speed at the bottom is 40.0. Illustrate what is the coefficient of kinetic friction of his skis on snow?
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