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twin brothers each of mass 50 kg sit in a symmetric canoe of mass 40 kg. each boy sits 1.5m from the center of the canoe as they toss a basketball(mass= .60kg) back and forth.
a) how much does the center of canoe move as the ball moves from one brother to the other?
b) How much would the canoe shift on each throw if instead they used a medicine ball of mass 11 kg?
The rms current in an RL circuit is 0.28 A when it is connected to an ac generator with a frequency of 60.0 Hz and an rms voltage of 25 V. (a) Given that the inductor has an inductance of 170 mH, what is the resistance of the resistor? ? (b) Find the..
A 5000kg satellite orbits earth at a distance of 35,000km above the surface of the earth. Calculate its velocity and its period
An object is placed 45 cm from a concave mirror of radius 92 cm. (a) Find the location of the image. (Enter in cm. Use a negative number if the image is behind the mirror) cm (b) What is the magnification of the mirror? Is the image real or virtual? ..
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 large stick is pivoted about one end and allowed to swing back and forth as a physical pendulum. what is its moment of inertia, about an axis through the pivot
A block of mass 20m can move without friction on a horizontal table. find the magnitude of the acceleration of the descending block
A standing wave pattern on a string is described
a race car travels around a circuit at a constant speed of 45 m/s. it first heads East for 1min, then SOuth for 1 min, how far does the car drive
Fish are hung on a spring scale to determine their mass (most fishermen feel no obligation to report the mass truthfully). How far apart are the half-kilogram marks on the scale
What is the total negative charge, in Coulombs, of all the electrons in a small 0.750 g sphere of carbon
A cannon tilted up at a 28? angle fires a cannon ball at 70m/s from atop a 22m -high fortress wall. What is the ball's impact speed on the ground below
You are given a container with 56 g of hydrogen atoms. What is the total charge on the electrons in the container
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