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A proton ,a deutron and an alfa particle ,accelerated through the same potential difference ,enter a region of uniform magnetic field moving at right angles to B.(a) compare their kinetic energies .(b) if the radius of the proton’s circular path is 10cm ,what are the radii of the deutron and the alfa-particle path?
The range of human hearing is roughly from twenty hertz to twenty kilohertz. what are the lengths of the longest and shortest pipes
The position of a particle moving along the x axis depends on the time according to x=ct^2-bt^3 where x is in meters, what distance does the particle move and what is its displacement
A car is driving directly north on the freeway at a speed of 101 km/h and a truck is leaving the freeway driving 90 km/h in a direction that is 34° west of north
A liquid with a specific gravity of 0.72 is flowing at 5.5 ft/sec through a 6 inch diameter pipe (ID=6.065 inches). What is the volumetric flow rate
R-134a is flowing at 1kg/s and throttled from 850 kPa and 40 C to - 40 C. Heat is gained at a rate of 1 kJ/s from the surroundings at 25 C
What is the height of the power line and the initial speed of the ball?
A 10.39-m ladder with a mass of 24.8 kg lies flat on the ground. A painter grabs the top end of the ladder and pulls straight upward with a force of 264 N. What is the net torque acting on the ladder
Two earthquake waves of the same frequency travel through the same portion of the Earth, What is the ratio of the amplitudes of the two waves
The natural length of the spring AP is twice that of spring PB. Spring AP has a stiffness of 118 N/m and the stiffness of spring PB is twice that of spring AP. The distance AB between the supports is equal to the natural length of the spring AP
A sunbather lying on a floating raft that experiences no friction with the water gets up and walks to the western end of the raft. how fast does the raft move in terms of the sunbather's speed
A particular guitar string is supposed to vibrate at 191- Hz, but it is measured to actually vibrate at 210- Hz. By what percent should the tension in string be changed to get the frequency to the correct value.
A typical microwave oven has a power consumption of about 1200 W. Estimate how long it should take to boil a cup of water in the microwave, How does this estimate correspond to everyday experience
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