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The sun is in the sky at an angle of 22 degrees from vertical. You’ve built a column exactly 12.0 meters in height. You stand on the ground at the end of the column’s shadow. (THIS is where the concepts of sin, cos, and tan originally came from.....) (a) How far are you from the base of the column? (b) How far are you from the top of the column?
A wire that has a resistance of 5 is passed through an extruder so as to make it into a new,What is the resistance of the new wire
A child fires a slingshot pellet into the air with a speed of 66m/s. How high above the starting level will it go
A 630-Hz sound travels through pure hydrogen. What is the speed of sound in hydrogen
A series RLC circuit is driven by a voltage of amplitude 5V. If w(omega)= 1000s^-1, L = 5H, C=3muF and R =2komega. Find the amplitude of the current. Find the amplitude of the voltages across the capacitor, inductor, and resistor Find the phase diffe..
A 17-kg projectile is fired at an angle of 60° above the horizontal and with a speed of 240 m/s. At the highest point of its trajectory the projectile explodes into two fragments with equal mass, one of which falls vertically with zero initial spe..
Calculate the probability of finding the electron in the ground state of hydrogen at less than one Bohr radius from the nucleus
A thin double convex lens is to focus the image of an object onto a screen so that the image is life-sized. The lens has equal radii of 76 cm and the refractive index is n = 1.4. (a) What is the distance d from image to screen? (b) What is the total ..
A 220 kV power transmission line carrying 500 A is hung from grounded metal towers by ceramic insulators, What fraction of the power carried by the line in this
A somewhat longer cable replaces the old and is attached to the steel bar 5 m from its upper end, connecting to the same place on the wall as before and maintaining the same angle between the bar and the wall.
A 1.00 V potential difference is maintained across a 9.0 resistor for a period of 16.0 s. What total charge passes through the wire in this time interval
A 2.20 kg mass on a spring has displacement as a function of time given by the equation x(t)= (7.40 cm) cos [4.16 rad/s) t - 2.42 rad]. Find the time for one complete vibration
The circuit is 10v clockwise into 40 ohm resistor downward through 12 ohm resistor back to the negative terminal of the battery. What is the power deliverd by both batteries
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