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Q1. A ski jumper has 1.2 ´ 10 J of potential energy at the top of the ski jump. The friction on the jump slope is small, but not negligible. What can you end about the ski jumper's kinetic energy at the bottom of the jump?
Q2. If atoms hold electrons with standard quantum number up to and including n=5, how many elements would be there?
If the radius of curvature of the cornea is 0.65cm when the eye is focusing on an object 36.0 cm from the cornea vertex and the indexes of refraction are as described before, what is the distance from the cornea vertex to the retina
Consider a rectangular metal loop of length of 0.15m and width of 0.08m. Determine the emf induced in the wire on the left side of the loop
Suppose that you wish to fabricate a uniform wire out of 0.850 g of copper. Assume the wire has a resistance R = 0.800 ?, What will be the diameter of the wire
2000 kg elevator is accelerated uniformly from rest to 4 m/s in a time of 90s. find the change in mechanical energy of the elevator
Guess scale factor of the Universe
A firework explodes 120 m above the ground. Determine the time difference between two observers hearing the explosion
If you were to take a 60.0 cm long steel bar, and heated it to the point that it would try to expand by 0.50 mm,what is the pressure you would need to apply, to keep it from expanding
A 20.0cm -diameter cylinder of helium gas is 50.0cm long and at 30.0 ?C. The pressure gauge reads 130psi, How many helium atoms are in the cylinder
A 10.39-m ladder with a mass of 24.8 kg lies flat on the ground. A painter grabs the top end of the ladder and pulls straight upward with a force of 264 N. What is the net torque acting on the ladder
A 200 turn 10^-3 cross sectional area coil is immersed in a magnetic field such that the plane of the coil is perpendicular to the field. how much voltage is induced
The angle of reflection of a reflected ray is 75º. what is the angle formed by the incident ray and the reflected ray?
A flat coil enclosing an area of 0.10 m2 is rotating at 65 rev/s, what is the maximum voltage induced in the coil
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