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Imagine you have two 2.5 m long wires running parallel to each other (separated by 1.0 cm) carrying 200 mA currents. What is the magnetic force of one wire on the other if (a) the currents are both running in the same direction or (b) the currents are running in opposite direction?
the crate shown is held against wedge b by a spring. the spring is 96.0 of its original uncompressed length l2.75m and
An electron is released from rest at the negative plate of a parallel plate capacitor and accelerates to the positive plate, What is the kinetic energy of the electron just as it reaches the positive plate
A cyclist intends to cycle up a hill whose vertical height is 170m.. Assuming the mass of bicycle plus cyclist is 75 kg
Two parallel conducting plates are separated by 10.0 cm, and one of them is taken to be at zero volts. What is the voltage between the plates
Two resistors are connected in series to a battery with an emf of 12 V. The voltage across the first resistor is 2.9V, Find the resistance of the second resistor
A 300 lb bungee jumper wants to jump from the top of a 230 ft high bridge and be able to just touch the water below. what should the bungee cord's relaxed length, l, be for this jump
A ball is thrown off a 22 m high cliff at 9 m/s, 50o above the horizontal. How long does it take to hit the ground
A 50 kg skateboarder wants to just make it to the upper edge of a "quarter pipe," a track that is one-quarter of a circle with a radius of 2.4 m. What speed does he need at the bottom
An organ pipe is 1.42 m long. What is the first harmonic frequency of this pipe when it is open at both ends
A person of mass 75kg stands at the center of a rotating merry-go-round platform of radius 3.5mand moment of inertia 920kg?m2. compute the angular velocity when the person reaches the edge
a blow-dryer and a vacuum cleaner each operate with a voltage of 120 v. the current rating of the blow-dryer is 11 a
Find the coefficient of kinetic friction between a 4.1- block and the horizontal surface on which it rests if an 83 spring must be stretched by 3.0 to pull the block wi`th constant speed. Assume the spring pulls in a direction 15 above the horizontal..
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