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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.
An infinite non conducting sheet has a surface charge density σ = +5.80 pC/m2. (a) How much work is completed by electric field because of the sheet if a particle of charge q = +1.60 × 10-19 C is moved from the sheet to a point P at distance d = 3.56..
a cylinder with a piston contains 0.150 mol of nitrogen at 1.80 105 pa and 300 k. the nitrogen may be treated as an
Two titanium spheres approach each other head-on with the same speed and collide elastically. What is the mass of the other sphere
An air bubble of 10 cm^3 is created at bottom of a lake, where the temperature is 5 degree celsius and is 100 m deep. what is the pressure at the bottom
A model rocket is launched straight upward with an initial speed of 47.8m/s. It accelerates with a constant upward acceleration of 2.07m/s2 until its engines stop at an altitude of 157 m. What is the maximum height reached by rocket.
Two submarines are on a secret mission and need to arrive at a location in the middle of the Atlantic Ocean at the same time. They start out at the same time from positions equally distant from the redezvous point.
An airplane whose air speed is 608 is supposed to fly in a straight path 38 north of east. But a steady 86 wind is blowing from the north. In what direction must the plane head.
when two light bulbs are connected in series bulb a is brighter than bulb b.if the positions of the bulbs were reversed
An air-filled toroidal solenoid has a mean radius of 15.5cm and a cross-sectional area of 4.95cm2, How many turns does the winding have
Graph the power of the laser when it's on. b) Compute the energy in the pulse. c) Compute the number of photons in the pulse.
A king orders a gold crown having a mass of 0.68 kg. When it arrives from the metalsmith, the volume of the crown is found to be 145 cm^3
A test charge of +2*10^-7 C is located 5cm to the right of a charge +1*10^-6 C and 10 cm to the left of a charge -1*10^-6 C. The three charges lie on a straight line
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