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Yellow light from a sodium lamp (lambda=589 nm) traverses a tank of glycerine (n=1.47) which is 20 m long and time t 1. If it takes time t 2 to pass during the same tank when filled with carbon disulfide (n=1.63), find the difference among the two times and then find the wavelength of sodium in both medias.
Sam, whose mass is 74 kg, straps on his skis and starts down a 67-m-high, 20 ^\circ frictionless slope. Find Sam's speed at the bottom using work and energy
suppose now that the air carts below are both moving to the right initially. the cart to the left has a mass m1 and an
calculate the power transferred from a power amplifier to a loudspeaker if the amplifier output voltage is 10 volts and
A 256 kg wooden raft floats on a lake. When a 80 kg man stands on the raft, it sinks 9.0 cm deeper into the water. When he steps off, the raft vibrates for a while. What is the total energy of vibration
A double slit is opposite the center of a 1.7-m wide screen 2.3 m from the slits. The slit separation is 24 µm and the width of each slit is 7.2 µm. How many fringes are visible on the screen if the slit is illuminated by 590-nm light?
A ball of mass 1.5 kg is thrown upward. It leaves the thrower's hand with a velocity of 10 m/s. Calculate the average force exerted by the hand on the ball while the ball is slowing down
Suppose |L| = 10 and r = 2i + 3j + 4k and |p| = 10. What is the angle between the radius and momentum vectors
A man whose weight = 584N is doing pushups. His center of gravity is located 0.410m from where his hands tough the ground, Find the normal fource exerted by the floor on EACH hand
A 2.30 N force pushes it to the left, and a 0.800 N force pushes it to the right. (a) Taking right to be positive, what is the net force acting on it? (b) What is its acceleration?
If the golf club is in contact with the ball as it is accelerated over an interval of 1.11 cm, estimate the average force exerted on the ball by the club
q1. suppose a constant ratio of 13.60 counts per minute per gram of living matter. a sample of a petrified tree was
Without taking the existence of the nebula into consideration, based on its apparent magnitude, how far away does the star in part (b) appear to be? What would the propotion error be in determining the distance if interstellar extinction were negl..
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