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Two points on a string are observed as a traveling wave passes them. The points are at x1 = 0 and x2 = 1 m. The transverse motion of the two points are found to be as follows: y1 = 0.2 sin (3*pi*t) y2 = 0.2 sin (3*pi*t + pi/8) What is the frequency (in Hertz), wavelength, speed of the wave, and the direction the wave travels in?
a box full of books rests on a wooden floor. the normal force the floor exerts on the box is 235 n. a you push
A block and tackle consisting of two fixed pulleys and one moveable pulley is used to lift a stone weighing 1200 N. the force required is 476 N. compute the efficiency of the block and tackle, the actual mechanical advantage and the ideal mechanical ..
A coffee-maker (19 ?) and a toaster (13 ?) are connected in parallel to the same 120-V outlet in a kitchen. How much total power is supplied to the two appliances
A weather balloon rises by the atmosphere, its volume expanding from 4.4m^3 to 10m^3 as temperature drops from 17 Degrees C to -13Degrees C.
two parallel plates separated by a distance d 0.4 meter have equal and opposite charge uniformly distributed on the
A circuit containing a battery with V = 10.2 V and a resistor R1 = 16.6 ? is shown above. If we replace the wire between points a and b with a second resistor R2 = 26.3 ?, by how much (in A) will the total current through the battery change?
Two small spheres spaced 35.0 apart have equal charge. How many excess electrons must be present on each sphere
A motor has a single loop inside a magnetic field of magnitude 0.581 T. If the area of the loop is 305.0 cm2, find the maximum angular speed possible for this motor
Sound travels at a speed of about 344 m/s in air. You see a distant flash of lighting and hear the thunder arrive 7.6 seconds later. How many miles away was the lighting strike
A plastic rod is rubbed against a wool shirt, How many electrons are transferred from the wool shirt to the plastic rod? The elemental charge is 1.6 × 10?19 C
A positron is a particle with the same mass and magnitude charge as an electron, but a positron has a positive charge. how fast is the positron moving
A 6kg block sits on a surface with µs=0.5 and µk=0.3. You exert a force (F) at an angle of ?=30°on this block. what is the net work done on the block over this time
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