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Entropy (arrow of time)Why did the universe have such low entropy in the past, resulting in the distinction between past and future and the second law of thermodynamics?[2] Why are CP violations observed in certain weak force decays, but not elsewhere? Are CP violations somehow a product of the Second Law of Thermodynamics, or are they a separate arrow of time? Are there exceptions to the principle of causality? Is there a single possible past? Is the present moment physically distinct from the past and future or is it merely an emergent property of consciousness? Why does time have a direction? What links the quantum arrow of time to the thermodynamic arrow?
q1. a 48-m length of wire is stretched horizontally between two vertical posts. the wire carries a current of 64 a and
Suppose a patient having an MRI is immersed in a 3.0 T field along the axis of his body. He then quickly tips his head to the side, toward his right shoulder, tipping his head by 30 degrees in the rather short time of 0.15 s.
Find the magnitude and direction of the acceleration. A 2.60 kg steel ball strikes a wall with a speed of 10.0 m/s at an angle of 60.0° with the surface. It bounces off with the same speed and angle. If the ball is in contact with the wall for 0.19..
A stick of mass F is lying on a frictionless surface. A small ball of mass G and velocity v collides with the stick in the center of the stick a right angle to the rod. What is the angular velocity around the axis of rotation after this collision
Compute the acceleration of each box decide maximum distance the car rolls up the hill
A fly wheel rotates with an angular speed of 25 rev/s. As it is brought to rest with a constant acceleration, it turns 50 rev. Determine how much time does it take to stop
An engine draws energy from a hot reservoir with a temperature of 1250 K, What is the actual efficiency of this engine
A Ferris wheel is moving at an initial angular velocity of 1.0 rev/53 s. If the operator then brings it to a stop in 2.8 min, what is the angular acceleration of the Ferris wheel
When a 9.0 V battery is connected to a capacitor, it puts 8.40e-4 C of charge on the capacitor. What is the unknown battery's voltage
What is the magnitude of the electric field at a distance of 1.4 m from a point charge with Q = 5.0 C
A plastic cylinder of length 38 cm its ends ground to convex (from the rod outward) spherical surfaces, each having radius of curvature 19 cm, How far will the image of the object lie from the right end
question a solid aluminum ingot weighs 92 n in air.a what is its volume?b the ingot is suspended from a rope and
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