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An empty rubber balloon has a mass of 0.0109 kg . The balloon is filled with helium at a density of 0.178 kg/m3. At this density the balloon has a radius of 0.534 m. If the filled balloon is fastened to a vertical line, what is the tension in the line? The acceleration of gravity is 9.8 m/s2.
A vertical electric field of magnitude 2.45 104 N/C exists above the Earth's surface on a day when a thunderstorm is brewing. Determine the electric flux through the bottom of the car
what is the sign of the charge on the electroscope that you charged by induction, What evidence do you have to support your answer
A loop of diameter 15 cm is placed in a uniform electric field of magnitude 6.0 102 N/C. (a) What is the electric flux through the loop when the electric field is perpendicular to the plane of the loop? N·m2/C.
A 0.840-kg block oscillates on the end of a spring whose spring constant is k= 42.0 N/m . The mass moves in a fluid which offers a resistive force F=-bv, where b = 0.640 N*s/m. What is the fractional decrease in amplitude per cycle?
1. List a few applications of DSSS and OFDM. 2. What is connection between the bandwidth of DSSS and the PN sequence
The work fuction of a particular substance is 7.81*10^-19 J. What is the photoelectric cutoff wavelength for this material
A uniform electric field with a magnitude of 250N/C is directed in the positive x direction. A 12uC charge moves from the origin to the point (20.0 cm, 50.0 cm). what is the change in electrical potential energy of the system as a result of the ch..
The equation of a transverse wave traveling along a very long string is y = 5.0 sin (0.055 ?x + 6.0 ?t), Determine the amplitude of propagation of the wave
An astronaut weighs 7*10^2 N on the surface of the earth (M earth=5.98*10^24 kg). What is her weight 7.70*10^6 m above the earth.
assume a planet had a density that varied with radius according to the equation, ρ =A/r, where A is some constant. Determine a formula that gives the central pressure for this kind of planet.
A narrow beam of light with wavelengths from 450nm to 700nm is incident perpendicular to one face of a 40.00degrees prism made of crown glass, What is the angular spread of the beam after passing through the prism
Write down a function named as kineticEnergy() which determines the kinetic energy of an object in accordance with the following formula.
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