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A bird watcher meanders through the woods, walking 1.62 km due east, 1.63 km due south, and 4.16 km in a direction 26.7 °north of west. The time needed for this trip is 2.308 h. Decide the magnitudes of the bird watcher's (a) average velocity and (b) displacement.
two loudspeakers are vibrating in phase. they are set up as in the figure and point c is located as shown there. the
question a car starts from rest and moves around a circular track of radius 30.0 m. its speed increases at the constant
The Achilles tendon inserts on the calcaneus at a distance of 8cm from the axis of the ankle joint. The force generated by the muscles attached to the Achilles tendon is 3000N, and the moment arm of this force is 5cm. a) Draw a free body diagram o..
A gas expands from I to F. The energy added to the gas by heat is 423 J when the gas goes from I to F along the diagonal path.
A swing is made from a rope that will tolerate a maximum tension of 6.44 x 102 N without breaking. What is the mass of the heaviest person
A 45.8-g golf ball is driven from the tee with an initial speed of 44.9 m/s and rises to a height of 27.9 m. determine the kinetic energy of the ball at its highest point
In traveling to the Moon, astronauts aboard the Apllo spacecraft putt hemselves into a slow rotation to dsitribute the Sun's energy evenly.At the start of their trip, they accelerated from no rotation to 1 revolution perminute during a 12- min tim..
A concave mirror (R = 56.0 cm) is used to project atransparent slide onto a wall. The slide is located at a distanceof 40.0 cm from the mirror, and a smallflashlight shines light through the slide and onto the mirror. Thesetup is similar to that i..
question if the restoring spring of a galvanometer weakens by 25 over the years what current will give full-scale
you and a friend pull on two ropes to dock a satellite whose mass is 1300 kg. The satellite is initially at position m, How much work did your friend do
A typical scuba tank has a volume V of 10 liters. When fully charged, it contains compressed air at a pressure of 200 bars, or 2.0 x 10^7 Pa. What is the uncompressed volume of the air
A 15kg crate is moved along a horizontal floor by pulling on it with a rope that makes a 30 degree angle with the horizontal, How much work is done by the normal force and frictional force, What is the net work
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