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A lead wire of cross-sectional area 0.980 mm2 is at a temperature of 2.00 K and carries a current of 0.490 A. (a) Find the voltage drop along a 10.4 m length of the wire.
A spherical balloon is made from a material whose mass is 2.33 kg.The thickness of the material is negligible compared to the 1.77-mradius of the balloon. The balloon is filled with helium (He) at atemperature of 283 K and just floats in air, neit..
Two cars suffer head-on collision with each other. What is conserved in the collision?
A speedboat starts from rest and accelerates at +2.32 m/s2 for 6.78 s. At the end of this time, the boat continues for the additional 5.34 s with an acceleration of +0.677 m/s2. Following this, the boat accelerates at -0.686 m/s2 for 8.68 s.
A 23-g bullet traveling 270m/s penetrates a 1.8kg block of wood and emerges cleanly at 195m/s. how fast does it move after the bullet emerges
Two large metal plates of area 1.0m2 face each other. They are 5.0cm apart and carry equal and opposite charge on their inner surfaces. what is the charge on the plates
A tennis player standing 10.2 m from the net hits the ball at 3.60° above the horizontal. To clear the net, the ball must rise at least 0.322 m. how fast was the ball moving when it left the racquet
After landing on an unfamiliar planet, a space explorer constructs a simple pendulum of length 53.0cm. What is the magnitude of the gravitational acceleration on this planet
A 9 V battery is rated at 80 Ah. It can deliver a current of 80 A for one hour, or a current of 40 A for 2 hours, etc. What is the total energy stored in the battery
The weight of passengers on a roller coaster increases by 53% as the car goes through a dip with a 35m radius of curvature
On a cool morning, when the temperature is 16 deg Celsius, you measure the pressure in your car tires to be 20.0 psi. After driving 40 mi on the freeway, temperature of your tires is 56.0 deg Celsius. What pressure will your tire gauge now show.
A small immersion heater can be used in a car to heat a cup of water for coffee or tea. suppose the manufacturer's claim of 60% efficiency.
A moon orbits a planet because of the gravitational force between them. Similarly, each body also experiences a tidal force due to gravity. Consider how the magnitude of the tidal force changes as distance between a planet and moon varies.
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