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The ballistic pendulum was used to measure the speeds of bullets. It consists of a large block of wood of mass M = 5.4 kilogram, hanging from two long chords. A bullet of mass m = 9.5 gram is fired into the block, coming quickly to rest. The block + bullet then swing upward, their center of mass rising a vertical distance h = 6.3 centimeter before the pendulum comes momentarily to rest at the end of its arc. Find the speed of bullet just prior to collision?
If the maximum acceleration that is tolerable for passengers in the new train system of Oahu is 2 m/s^2 and the train stations are located 750 meters apart, what is the maximum speed the new train can reach between stations? What is the travel time b..
Suggest a proper answer with proof for if frequency of incident radiation is doubled, what will be the effect on maximum kinetic energy of photo electrons
A box of textbooks of mass 24.7 kg rests on a loading ramp that makes angle a with the horizontal. The coefficient of kinetic friction is .25 and the coefficient of static friction is .37. Find out the minimum angle at which the box starts to sl..
A right triangle has sides of 30, 40 and 50 cm. A charge of -10 x 10-6 C is placed at the right angle; a charge of + 10 x 10-6C at the smaller acute angle and a charge of + 5.0x10-6 C at the larger acute angle
A car rounds a banked curve. The radius of curvature of theroad is R, the banking angle is ?, and the coefficient of staticfriction is µ. Determine the range of speeds the car can have without slipping up or down the road
The magnitude of vector vector A is 31.6 units and points in the direction 321° counterclockwise from the positive x-axis. find out the x-component of this vector.
The radar system at an airport broadcasts 15 GHz with 150 kW. An approaching airplane with a 34 m^2 cross section is 24km away. Assume that the radar broadcasts uniformly in all directions and that the airplane scatters microwaves uniformly in all di..
In a very busy off-campus eatery one chef sends a 217-g broccoli-tomato-pickle-onion-mushroom pizza sliding down the counter from left to right at 1.67 m/s. At what speed does it move
A child ties a rock to a string and whirls it around in a horizontal circle. find the period of its uniform circular motion
Two solid spheres, each of mass m, are rolling without slipping with a speed v. If the spheres have radii R1 and R2 with R1/R2 = 5.5, what is the ratio of their kinetic energies
A tortoise can run with a speed of 0.12m/s, and a hare can run 20 times as fast. How long does the race take
A microwave oven has a power requirement of 1256 W. A frozen dinner requires 5.2 min to heat on full power. How much electrical energy (in kWh) is utilized
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