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A simple pendulum has a length of 0.80 m and a bob of mass 0.20 kg. It is initially displaced to an angle of 18 degrees from the vertical and released from rest at t = 1.2s :
a. What angle does it make with the vertical?
b. what is its velocity?
A proton is placed in an electric field of intensity 700 N/C. What is magnitude and direction (towards or away from the field) of the acceleration of this proton because of this field? The charge on a proton is +1.6 x 10-19 C and the mass of a prot..
a wire carrying a current is placed in a uniform magnetic field. When a current of 3.7A flows in the wire there is a force of 0,075N on each 18cm of wire in the field
the velocity of an airplane is 50km/hr due north. the plane the plane flies into a cross wind of 50km/hr due east at a right angle
The plane has a telescopic bombsight set so that the bomb hits the target seen in the sight at the moment of release. At what angle from the vertical was the bombsight set
A coating is applied to a lens to minimize reflections. The index of refraction of the coating is 1.66 and that of the lens is 1.56. what is the largest wavelength that is minimally reflected
the formulas for the ?uorides of some second period elements are lif bef2 bf3 and cf4. which is the correct formula for
The distance between between the 1st and 10th minima of a double-slit system is 18 mm, find the wavelength of light generating the interference pattern
What is the focal length of this mirror. If the object is 25 cm in front of the mirror, what is the image distance.
A Hall probe serves to measure magnetic field strength. Such a probe consists of a poor conductor 0.171 mm thick, evaluate the magnetic field strength
In order better to map the surface features of the Moon, a 325-kg imaging satellite is put into circular orbit around the Moon at an altitude of 1.31 × 102 km
A 3-ft-diameter semicircular channel made of unfinished concrete is to transport water to a distance of 1-m uniformly. determine the minimum elevation difference across the channel
Find out the potential difference between r2 and r1
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