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Through nuclear magnetic resonance scanning in a hospital the protons(q=1.60*10^19 c) in the atoms of a patient’s body are subjected to a magnetic field of 75 T. Compute the magnitude of the magnetic force acting on the protons if we assume that they vibrate with a speed of 10^4 ms-1
A hot air balloon is accelerating upward under the influence of two forces, its buoyant force and the weight. Evaluate the acceleration of the rising balloon
A certain light source is found to emit radiation whose peak value has a frequency of 1.21×1015 Hz. Calculate the temperature of the source
a spring with a spring constant of 549 nm is used to propel a 0.275-kg mass up an inclined plane. the spring is
Two identical pith balls are hung by insulating strings, touching each other, as in the picture below. The mass of each ball is 0.002kg. Determine the charge on each ball
a crate on the floorhas an applied force 11 degrees below horizontal of 815 Newtons. what is the mass of the crate
A 58.0-kg projectile is fired at an angle of 30.0° above the horizontal with an initial speed of 1.38 102 m/s from the top of a cliff 156 m above level ground, What is the initial total mechanical energy of the projectile
A 5* 10^2 kg hot air balloon takes off from rest at the surface of the earth. The non conservative wind and lift forces take the balloon up, doing +9.70*10^4J of work on the balloon in the process. At what height above the surface of earth does th..
Starting from rest, a 5.5-kg block slides 3.00 m down a rough 30.0° incline, Determine the work done by the friction force between block and incline
If the humidity in a room of volume 685 m3 at 25°C is 40percent, what mass of water can still evaporate from an openpan
a uniform rod of length 200cm is bent at its midpoint into a right angle. then the bent rod is placed along the
A long solenoid has 231 turns in a length of 13 cm, radius of 1.8 cm, and I= 1.3 A. Find the magnitude of the average induced emf in the coil
A man stands in a stationary canoe and throws a 5.00 kilogram stone with a velocity of 8.10 m/s at an angle of 28.0 degree above the horizontal. determine the horizontal recoil velocity (direction and magnitude) of the canoe
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