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A proton (m = 1.67 × 10-27 kg, q = e) is sent from far away and impinge directly on a Zirconium nucleus (Q = 40e). The proton's initial speed is 5.0 × 105 m/s. What is the proton's distance of closest approach to the Zirconium nucleus?
you push the box 20 kg below with a force of 50 n at an angle of 40 with the horizontal. the cofefficient of friction
A 200-kg roller coaster car travels over the top of a 40-m high hill (Hill A) traveling at 10 m/s. find the speed of the car at the top of the second hill
A girl of mass 29.9 kg stands on the rim of a frictionless merry-go-round of radius 1.78 m and rotational inertia 219 kg·m2 that is not moving. She throws a rock of mass 635 g horizontally in a direction that is tangent to the outer edge of the merry..
A wire loop of radius 0.40 m lies so that an external magnetic field of magnitude 0.40 T is perpendicular to the loop. Find the magnitude of the average induced emf in the loop
An electric scooter has a battery capable of supplying 140 Wh of energy. If friction forces and other losses account for 60 percent of the energy usage, what altitude change can a rider achieve while driving in hilly terrain, if the rider and scooter..
What is the angular separation of two spectral lines of wavelengths 446 nm and 398 nm formed in order m=2 with a 360 line/mm grating
a 64.0 kg person standing on a diving board dives straight down into the water. just before striking the water her
An 85 kg jogger is heading due east at a speed of 2.3 m/s. Find the magnitude and direction of the sum of momenta of the two joggers
A 10 g sample of neon gas has 1700J of thermal energy. Estimate the average speed of a neon atom
an unpolarized light beam traveling along the x-axis is sent into a system of three polarizers. the polarization axis
the gauge pressure at the bottom of a cylinder of liquid is 0.30atm. the liquid is poured into another cylinder with
A constant friction force of 5 N acts on a 85 kg skier for 20 s. What is the skier's change in velocity
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