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In a church choir loft, two parallel walls are 5.70 m apart. The singers stand against the north wall. The organist faces the south wall, sitting 0.750 m away from it. So that she can see the choir, a flat mirror 0.600 m wide is mounted on the south wall, straight in front of the organist. What width of the north wall can she see? (Hint: Draw a top-view diagram to justify your answer.)
=________ m
Two physical pendulums ( not simple pendulum) are made from sticks that are suspended from the ceiling at one end. The sticks are uniform and are identical in all respects, except one is made of wood (mass = 0.17 kg )and the other of metal (mass =..
A hypothetical nucleus weighs 1 lb. How many nucleons are in this nucleus and What is the radius of this nucleus
A beam of particles is directed at a 0.017-kg tumor. There are 2.1x10^10 particles per second reaching the tumor, Find the biologically equivalent dose given to the tumor in 19s
A window washer of mass 86 kg stands at a distance d from the midpoint of the scaffold. The tension in the cable nearest the worker is twice the tension in the other. Illustrate what is the tension in the cable nearest the worker? What is the tens..
A capacitor has parallel metal plates of dimensions 12 cm *24 cm seperated by an air gap of .750 mm. find how much energy is stored in the capacitor
q1. assume acceleration is constant during each time interval but not necessarily the same in both intervals what
A kid picks up a toy of mass 139g, from the floor. The kid lifts the toy 42.2cm above the floor. How much work does the kid do on the toy
A stone with a mass of 0.700 is attached to one end of a string 0.8 long. The string will break if its tension exceeds 65.0 . The stone is whirled in a horizontal circle on a frictionless tabletop; the other end of the string remains fixed.
Imagine removing one electron from every atom in a tiny cube of gold 1 mm on a side. (Never mind how you would hold the resulting positively charged cube together.) Do the same thing with another such cube a meter away.
How many wavelengths are there in one pulse
One of the events in the Scottish Highland Games is the sheaf toss, in which a 7.92-kg bag of hay is tossed straight up into the air using a pitchfork. Using the total impulse produced by gravity, determine how long the sheaf is airborne
a gas at p=40kpa and T= 310K hass a mass density of 8.44*10^-2kg/m3, what is the rms speed of the atoms in the gas
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