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Consider connecting three resistors of resistances 31 Ω, 49 Ω, and 695 Ω together.
What is the largest resistance you can obtain in Ω?
What is the smallest resistance you can obtain in Ω?
Two concentric spheres of radii a and b> a have equal and oppposite charge Q when the potential diffrence between them is V. What is the capacitance of the spheres
The cable pulls horizontally on the box, and a 50.30 bag of gravel rests on top of the box. The coefficients of friction between the box and roof are shown. The system is not moving. Find out the friction force on the bag of gravel.
A.2m wire is moved perpendicular to a.5magnetic field at a speed of 1.5m/s. what emf is induced across the ends of the wire
Two forces F1 and F2, act at a point. F1 has a magnitude of 9.20N and is directed at an angle of 61.0 degrees above the negative x axis in the second quadrant. What is the magnittude of the resultant force
A 9000-kg boxcar traveling at 16.0 m/s strikes a second boxcar at rest. The two stick together and move off with a speed of 6.00 m/s
a charge q1 5.00 nc is palced at the origin fo an xy-coordinate system and a charge q2 -2.00nc is placed on the
A star ship approaches its home planet at a speed of 0.1c. When it is 5.4×107km away, it uses its green laser beam (=540nm) to signal its approach. How long does the signal take to travel to the home planet? At what wavelength is the signal detected ..
Four rays of light are incident on a surface of water. Their angles of incidence are 20, 30, 45, y 60 degrees. Calculate the angle of refraction for each ray
A person drops a cylindrical steel bar (Y = 1.70 × 1011 Pa) from a height of 4.70 m, what is the maximum compression of the bar
A child's toy consists of a piece of plastic attached to a spring in the figure below. The spring is compressed against the floor a distance of 2.00 cm, estimate the force constant of the spring
monochromatic light strikes a diffraction grating at normal incidence before illuminating a screen 2.10m away. find the distance between the two second-order maxima
The electric field near the surface of Earth points downward and has a magnitude of 156 N/C. What is the ratio of the magnitude of the upward electric force on an electron to the magnitude of gravitational force on the electron?
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