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A rock with mass .12 kilogram is fastened to a mass less string with length .80 meters to form a pendulum. The pendulum is swinging therefore as to make a maximum angle of 45o with the vertical. Air resistance is negligible.
a. Find the speed of the rock when the srongpasses through the vertical position?
b. Find the tension in the string when it makes an angle of 45 degree with vertical?
c. Find the tension in the string as it passes through the vertical?
A 1.0-cm-wide diffraction grating has 1300 slits. It is illuminated by light of wavelength 560 nm. What is the angle (in degrees) of the first diffraction order? What is the angle (in degrees) of the second diffraction order?
A variable force, given by the analytical expression F = 3x2 with x in meters, acts on an object, changing only the kinetic energy of the object. Assume the particle starts out at x=0. a) Make a sketch of the force acting on the object as a function ..
a child of mass 32 kg sits on a wooden horse on a carousel. the wooden horse is 3.7 m from the center of the carousel
At what depth under water does the pressure increase by 100,000 Pa? The Earth rotates with a period of one day. What is its rotational speed in revolutions per minute? The Earth rotates with a period of one day. What is its rotational speed in revolu..
At age 40, a man requires contact lenses (f=65.0 cm) to read abook held 25.0 cm from his eyes. By what distance has his near point changed
Two steel wires of the same length, one with radius r and the other with radius 3r, are connected together, end to end, and tied to a wall. How far does the point where the two wires meet move
What mass of water at 29.0°C added to a Styrofoam cup containing two 60.0 g ice cubes from a freezer at -16.0°C will result in a final temperature of 5.00°C for the drink? Explain it.
Regarding the Earth and a cloud layer 800 m above the Earth as the "plates" of a capacitor, calculate the capacitance of the Earth-cloud layer system. What is the maximum charge the cloud can hold
Estimate the volume of your body. (Consider your body to be a cylinder having a radius of about 6 inches (or 0.15 m) and a height of about 1.5 meters
An electron is released from rest at a perpendicular distance of10.8 cm from a line of charge on a very long nonconducting rod.That charge is uniformly distributed, with 8.1 μC per meter.What is the magnitude of the electron's initial acceleration..
At the interface between the steel and the brass the strain in the steel will be higher than the strain in the brass.
The typical operating voltage for anelectron microscope is V =50kV. (a) What isthe smallest feature one could hope toresolve? (b) What isthe equivalent resolution if neutrons are used?
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