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Q1. A 0.120 kg block on a horizontal frictionless surface is attached to the spring whose force constant is 572 N/m. The block is pulled from its equilibrium position at x = 0 m to a displacement x = +0.080 m and is released from rest. The block after that executes simple harmonic motion along the x-axis (horizontal). The displacement of the block at time t = 0.20 s is closest to: 0.01m, -0.01m, 0.08m, -0.08m, 0.1m
Q2. A dog pulls on the pillow with a force of 12 N at an angle of 52° above the horizontal. Find the x and y components of this force.
He would like a prescription for contact lenses to serve the same purpose. What is the exact contact lens prescription, in diopters.
Find out the least compression of the spring
What focal length does the lens require
Find out the acceleration of the sled and child
What is an electric field between the plates? Towards which plate is it directed.
W hat is balls initial speed
When two tuning forks of 128 Hz and 149 Hz, respectively, are sounded simultaneously, how various beats per second are heard.
Galaxies form by gravitational collapse of regions that are denser than average. Noting that the present day average mass density of the universe is ρ = 3 × 10-30 g/cm-3, estimate how long it takes for a galaxy to collapse.
The loaded cab of an elevator has a mass of 3.0 x 10^3 kg and moves 145 m up the shaft in 23 s at constant speed. At what average rate does the force from the cable do work on the cab.
Find the lowest energy of the system (in electron volts) and list the quantum numbers of all occupied states. Find when the current in the solenoid increases to 5.0 A in a period of 0.90 s.
What is an initial speed given to the rock
You have a 56.9-mF capacitor initially charged to a potential difference of 10.1 V. You discharge the capacitor through a 4.77-Ω resistor. What is the time constant? After what multiple of the time constant does the potential difference reach 2.47 V.
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