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Two identical capacitors store different amounts of energy: capacitor A stores 1.4 x 10-3 J, and capacitor B stores 4.7 x 10-4 J. The voltage across the plates of capacitor B is 12 V. Find the voltage across the plates of capacitor A.
A large non conducting sphere of radius 30 cm is uniformlycharged throughout with a net charge of -3μC. Calculatethe electric field at a point inside the sphere at a distance of 10cm from the center.
question an ambulance is traveling east at 60ms. behind it there is a car traveling along the same direction at 34.3
A girl with a mass of 40 kg is swinging from a rope with a length of 3.2 m. What is the frequency of her swinging
A well-engineered ski jump is less dangerous than it looks because skiers hit the ground with very small velocity components perpendicular to the ground. What is the slope of the ground in the landing zone
Although the evidence is weak, there has been concern in recent years over possible health effects from the magnetic fields generated by transmission lines. Estimate the magnetic field strength on the ground
A car wheel with a moment of inertia of 7.85 kg.m^2 is accelerating from 2160 rpm to 5040 rpm in a time of 10.0s. calculate The work done in raising the rotation frequency
a large storage tank open to the atmosphere at the top and filled with water develops a small hole in its side at a
A particular guitar string is supposed to vibrate at 203 Hz, other than it is measured to actually vibrate at 208 Hz. By what percentage must the tension in the string be changed to get the frequency to the correct value.
A 2.5 ball and a 3.5 ball, each moving at 0.90 , undergo a head-on collision. The lighter ball rebounds opposite its initial direction, with speed 0.90. a) Find the post-collision velocity of the heavier ball.
A compressed-air cylinder is known to fail if the pressue exceeds 100 atm. A cylinder that was filled to 20 atm at 22°C is stored in a warehouse. Unfortunately, the warehouse catches fire and the temperature reaches 900°C. What is the pressure ins..
The index of refraction for red light in water is 1.331 and that for blue light is 1.340. what are the underwater angles of refraction for the blue and red components of the light
Monochromatic light of wavelength 500 nm is incident normally on a diffraction grating. how many TOTAL number of maxima can be seen
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