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If we observe a star's spectrum and find that the peak power occurs at the border between red and infrared light, what is the approximate surface temperature of the star?
You need to move the center of gravity 2.10cm to the left by gluing on a tiny 1.00-g mass, Where should you attach this additional mass
q1. the front of her sleeper wet from teething a baby rejoices in the day by crowing and bouncing up and down in her
A 50 kg person climbing a rope slides down after reaching the top. find The frictional force acting upward on the person
The mast of a sailboat is supported at the bow and stern by stainless steel wires, the forestay and backstay, Find the tension in the backstay and the force that the mast exerts on the deck
An iron casting containing a number of cavities weighs 16967.7 N in air and 13515.2 N in water. What is the total volume of all the cavities in the casting
Two narrow slits 0.286 mm apart are illuminated by light of wavelength 542. nm. The light falls on a screen 1.60 m away from the slits. What is the angular seperation between adjacent maxima
A 196.3 kg satellite is in a circular orbit of 26,273 miles (42,300,000 m) in radius. The force keeping the satellite in orbit is 40.1 N
A 60 power telescope has an eyepiece with a focal length of 10 cm. find the objective focal length
A 120-g mug at 21C is filled with 210g of coffee at 91C. suppose all of the heat lost by the coffee is transferred to the mug, what is the final temperature of the coffee? The specific heat capacity of the mug is 7.8 X 10^2 J/(Kg C)
The technique known as potassium-argon dating is used to date old lava flows and thus any fossilized skeletons found in them, What is the age of a piece of solidified lava with a 40Ar/40K ratio of 0.34
A wheel spinning at 25 rev/s is slowed to a stop by a constant acceleration while turning 50rev. What is the magnitude of the constant acceleration
During the spin cycle of your clothes washer, Find the angular displacement of the tub during a spin of 82.9 s
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