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(a) Determine the buoyant force on a 2.00 L helium balloon.
N (upward)
(b) Given the mass of the rubber in the balloon is 1.40 gram, determine the net vertical force on the balloon if it is let go? You can ignore the volume of the rubber.
A step down transformer is designed to have an output voltage of 19.5 V when the primary is connected to the 120 V. how many turns are in the secondary
How much work is done in stretching the spring. Find out the constant acceleration of the car.
a banner is suspended from a horizontal pivoted pole. the pole is 2.10 m long and weighs 170 n. the banner which weighs
A 20.0 ?, 9.00 ?, and 9.00 ? resistor are connected in parallel to an emf source. A current of 6.00 A is in the 9.00 ? resistor. Calculate the equivalent resistance of the circuit
A single square loop of wire 21.8 cm on a side is placed with its face parallel to the magnetic field between the pole pieces of a large magnet. When 6.27 A flows in the coil, the torque on it is 0.325 m·N. What is the magnetic field strength?
A diatomic molecule is excited to its first rotational energy level, corresponding to J = 1. what is the angular speed of the molecule about its center of mass
What is an index of refraction of the liquid
The position of a 2.6 kg mass is given by x = (2t^3-4t^2), where t is in seconds. What is the net horizontal force on the mass
a 6100-kg satellite is in a circular earth orbit that has a radius of 2.7x107 m. a net external force must act on the
A piece of Nichrome wire has a radius of 5.00 x10-4 m. It is used in a laboratory to make a heater that uses 2.00 102 W of power when connected to a voltage source of 120 V. Ignoring an effect of temperature on resistance, estimate the necessary l..
a binary channel with capacity 36 k bitssec is available for pcm voic transmission. if signal is band limited to 3.2
a system of consists of two infinitly long concentric copper pipes. the radius of the inner pipe is 1.00m and it has a
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