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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?
An electron starts from rest 75.5 cm from a fixed point charge with Q = -0.150 µC. How fast will the electron be moving when it is too far away.
Discover the magnitude of acceleration
A screen is placed 1.30 {rm m} behind a single slit. The central maximum in the resulting diffraction pattern on the screen is 1.70 {rm cm} wide-that is, two first-order diffraction minima are separated by 1.70 {rm cm}.
What is a stopping distance
Find out line linking the two point charges
What is the height of the hill . Find the coefficient of kinetic friction between flight bag and floor.
A 61 kg speed skater with the velocity of 16 m/s comes into a curve of 18 m radius. How much friction should be exerted between skates and ice to negotiate the curve.
Eight lights are connected in parallel to a 116 V source by two leads of total resistance 1.1. If 240 mA flows through each bulb, what is the resistance of each? What fraction of the total power is wasted in leads.
Illustrate energy bar graphs to solve the problem . What is amplitude of the oscillations.
Next you eliminate the 11 kg mass, place the rod horizontally, and strike one end with a hammer. How much time t would elapse before a microphone at the other end of the bar will detect a disturbance.
Recognize and sketch all the external forces acting on the chair. Because the chair can be represented as a point particle of mass, draw the forces with their tails centered on the black dot in the middle of chair. Be certain to draw the forces so th..
Two speakers, one directly behind the other, are each generating a 374-Hz sound wave. What is the smallest parting distance between the speakers that will generate destructive interference at a listener standing in front of them? Take the speed of so..
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