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A husband buys a helium-filled anniversary balloon for his wife. The balloon has a volume of 4.1 L in the warm store at 72 μF. When he takes it outside, where the temperature is 53 F, he finds it has shrunk. Obtain by how much has the volume decreased?
This question has to do with the oil drop experiment and how much voltage must be applied to keep a drop suspended in air. how much voltage must be used to keep the oil drop suspended
A Carnot engine has a power output of 240 kW. The engine operates between two reservoirs at 9 C and 661 C. How much thermal energy is lost per hour
A 10.0-kg object experiences a drag force due to air resistance. At what velocity (magnitude and direction) is the net force on the object twice its weight
A battery with an emf of17.9 Volt and internal resistance of 1.17 ohm is connected across a load resistor R. Find what power is dissipated in the internal resistance of the battery
The star Mizar in Ursa Major is a binary system of stars of nearly equal magnitudes. What is the minimum diameter of the pupil
A 95 kg man standing on a surface of negligible friction shoves a 75 g stone lying at his feet, giving it a velocity of 4.0 m/s. What velocity does the man obtain accordingly.
Suppose that during the launch of a rocket from the surface of the earth, Determine the acceleration of the rocket
A rope applies a horizontal force of 180N to pull a crate a distance of 2m across the floor A frictional force of 60N opposes this motion.
How far will it coast before starting to roll back down. In addition, snow exerts a retarding force on the sled that points opposite to the direction of motion, and has a magnitude of 57 N. Find the acceleration of the sled and child.
A playground carousel is rotating counterclockwise about its center on frictionless bearings. Find the final angular speed of the carousel
A lighthouse that rises h1 = 43.6 ft above the surface of the water sits on a rocky cliff that extends $d$ = 20.0 ft from its base, as shown in the figure below. A sailor on the deck of a ship sights the top of lighthouse at an angle of $theta$ = 29...
A 0.250-kg block oscillates on the end of a spring by a spring constant of 200N/m. If the system has energy of 6.90J, what is the amplitude of the oscillation?
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