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A hiker determines the length of a lake by listening for the echo of her shout reflected by a cliff at the far end of the lake. She hears the echo 1.5 s after shouting. Estimate the length of the lake.
Hoover Dam was built in the 1930s to provide electricity for the southwest U.S. and to prevent the wild Colorado River from flooding. how does pressure vary with depth along the wall of the dam
The drawing shows six point charges arranged in a rectangle. Thevalue of q is 1.63 μC, and the distance d is3.04 m. Find the total electric potential at location P,which is at the center of the rectangle.
To stretch a certain spring by 2.20 from its equilibrium position requires 7.00 of work. What was the maximum force required to stretch it by that distance
What is the value of h0? If the block were released from height 3h0 above the spring, Evaluate the maximum compression of the spring?
Assume that block C with mass mC is pushed to the left on a surface with a friction by a horizontally applied force Fapp and that the block is connected by a cord passing through a frictionless pulley to a hanging block D with mass mD
An object is 13 cm in front of a convex mirror whose focallength magnitude is 9cm and the magnitude of the distance is 5.3 cmfrom the image to the mirror. Is the image formed real orvirtual, and is it on the same side of the mirror as the object orth..
a transverse wave traveling on a string is represented by yx 0.48cos5.6x84t. yx is measured in cm above or below
a beam of monochromatic light is incident on a single slit of width 0.620 mm. a diffraction pattern forms on a wall
What is the greatest average speed of blood flow at 37°C in an artery of radius 1.50 mm if the flow is to remain laminar? Take the density of blood to be 1025 kg/m3
A 30 kg launching machine fires a 250 gram projectile horizontally at 100 m/s. This causes the machine to slide backward 1.122 meters before coming to a rest. how far would this machine slide
A falling stone takes 0.28 s to travel past a window 2.2 m tall. From what height above the top of the window did stone fall.
Two sinusoidal waves of the same period, with amplitudes of 5.0 and 6.5 mm, travel in the same direction along a stretched string; they produce a resultant wave with an amplitude of 10.036 mm. The phase constant of the 5.0 mm wave is 0. What is th..
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