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Q1. If 60 billion neutrinos per second rain down on one square cm of the surface of the Earth, how many neutrinos per second rain down on one square cm of the surface of Saturn? (Assume the Sun-Saturn distance is 10AU)
Q2. The flywheel is a solid disk with a mass of 64.0 kg and a radius R = 0.625 m. It turns on a frictionless axle. Its pulley has much smaller mass and a radius of 0.230 m. The tension Tu in upper (taut) segment of the belt is 170 N, and flywheel has a clockwise angular acceleration of 1.67 rad/s2. Find out the tension in the lower (slack) segment of the belt.
Standing at a crosswalk, you hear a frequency of 500 Hz from a siren of an approaching ambulance. Determine the ambulance's speed from these observations
A projectile launcher is set up in lab at a height of 1.05 meters above the lab floor. What is the horizontal distance which the projectile travels before it hits the ground
A charge of -5.5 micro Coulombs is placed at the origin of a coordinate system. Another charge of -5.5 micro Coulombs is placed at x = +0.22 m, y = +0.15 m.
Sirius has a luminosity of 8.4 * 10^27 Watts and a mass of 2.1 times the mass of the Sun, How much hydrogen does Sirius convert into helium each second
A certain freely falling object requires 1.7s to travel the last 37m before it hits the ground. From what height above ground did it fall.
A patients blood pressure is measured as 140 / 80, measured in level with the heart. What would you expect the blood pressure to be at the top of the head if there is a 45cm height difference in the two points. Density of blood is 100kmm-3. Give r..
A block is resting on a ramp with coefficient of friction between the blockand the ramp being .350, What is the max angle that the block can make without slipping
A 1210-N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end.
The same activity is measured for two different isotope samples. One sample contains 0.0450 kg of (atomic mass = 230.033 937 u, t1/2 = 20.8 days). What is the mass of the second sample
A vertical solid steel post of diameter d = 21.4cm and length L = 2m is required to support a load of mass m = 7650kg. What is the stress in the post
A wind turbine turns an electrical generator that contains a wire coil with 36 loops and a loop area of 0.10 m2. what is the rms amplitude of the AC voltage produced by the generator
A prospector finds a solid rock composed of granite (? = 2650 kg/m3) and gold. The volume of the rock is 3.40 10-4 m3 and its mass is 3.87 kg. a) What mass of gold is in the rock? b) What percentage of the rock is gold by volume? c) What percentag..
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