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Suppose a 31.7 kg child sits 1.38 m to the left of center on the same seesaw as the problem you just solved. A second child sits at the end on the opposite side, and the system is balanced.
(a) Find the mass of the second child.
mchild 2 = 21.9kg
(b) Find the normal force acting at the pivot point.
Fn =?
A laser beam passes through a single slit. We observe an interference pattern on a screen 9.03 m away. Find the width of the slit
A 3.00-g copper penny at 25.0 C drops 50.0 m to the ground. (a) If 60 percent of the initial potential energy of the coin earth system goes increasing internal energy of the coin determine the coin's final temperature (b) does the result depends on m..
Estimate how long it will take for the bleach molecules to diffuse through the extent of the room, assuming that the bleach bottle is in the center of the room, and the room is perfectly square, and is a 10 foot x 10 foot room.
One end of a wire is attached to a ceiling, and a solid brass ball is tied to the lower end. The tension in the wire is 145 N. What is the radius of the brass ball
A spherical concave lens has a focal length of 20cm, and an object is placed 15cm from the lens. estimate of the image distance and give image characteristics
Consider a collection of 4 "Fermi" dice. That is, no two die may have the same face up. What is the average value of the sum of the dice
A 0.43 Tesla magnetic field is perpendicular to a circular loop of wire with 52 turns, what is the magnitude of the induced emf in Volts
A dentist uses a mirror to examine a tooth that is 0.75 cm in front of the mirror. The image of the tooth is formed 11.0 cm behind the mirror. Determine the mirror's radius of curvature
A series circuit is made up of a 400 ohm resistor, a 3 henry inductor and a 8 microfarad capacitor all placed in series. Determine the steady state current flowing in this circuit
Light of intensity 0.5 W/m2 passes through the pupil of one of your eyes and eventually falls on your retina. how much light energy passes through in one minute
A 220g baseball is pitched at 25m/s spinning at 43rad/s. What fraction of its kinetic energy is rotational
What is the change in internal energy of a system that takes in 2.80 ? 106 J of heat, and does 4.50 ? 105 J of work while dissipating 9.00 ? 106 J of heat
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