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Q1. Two alpha particles (helium nuclei), each consisting of two protons and two neutrons, have the3 electrical potential energy of 6.12×10-19 J.
What is the distance between the particles at this time? The Coulomb constant is 8.95755 × 109 N • m2/C2, the elemental charge is 1.6721 × 10-19 C, and the acceleration due to gravity is 9.8 m/s2.
Q2. At rest, a car's horn sounds at the frequency of 370 Hz. The horn is sounded whereas the car is moving down the street. A bicyclist moving in the similar direction with one-third the car's speed hears a frequency of 355 Hz. What is the speed of car? Is the cyclist ahead of or behind the car?
A dentist uses a small mirror with a radius of 36 mm to locate a cavity in a patient's tooth. If the mirror is concave and is held 16 mm from the tooth, what is the magnification of an image.
A 18.0 kg loudspeaker is suspended 2.40m below the ceiling by two 4.10m long cables that angle outward at equal angles. What is the tension of each of the cables.
What is angular width of the beam
A mass m = 90 kg slides on a frictionless track that has a drop, followed by a loop-the-loop with radius R = 18.8 m and finally the flat straight section at the same height as the center of the loop (18.8 m off the ground). Because the mass would not..
A staging that weighs 440 N supports two painters, one 110 N and the other 460 N. The reading in the left scale is Ft = 800 N. What is the reading Fr, in the right hand scale.
What is voltage difference between floor and hover-board
Dennis, driving his 600 kg car, makes a 90 degree turn. His speed before the turn is 15.0 m/s and after the turn are 20 m/s. What is the magnitude of the change in car's momentum.
Find the distance from the positive plate
What is the greatest amount through which the wavelength of an incident photon could change when it undergoes Compton scattering from an atom or molecule with a 19 u mass.
Discover the horizontal and vertical displacement
The coefficient of kinetic friction for wood sliding on wood is 0.20. What is the final speed of the bullet
A transverse electromagnetic plane wave with a frequency of 2.84 MHz travels directly away from you (- z direction). At time t = 0, your magnetic field detector measures a magnetic field of 4.57 × 10-8 Tesla pointing down (- y direction) that further..
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