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A motorist drives south at 28.0 m/s for 3.00 minute, then turns west and travels at 25.0 m/s for 2.20 minute, and finally travels northwest at 30.0 m/s for 1.00 minute. For this 6.20 minute trip, determine the following values.
1. Total vector displacement (m) .
2. Average speed (m/s).
3. Average velocity m/s (magnitude).
Converting sunlight to electricity with solar cells has an efficiency of 15%. It's possible to achieve a higher efficiency (though currently at higher cost) by using concentrated sunlight as the hot reservoir of a heat engine. What is the theoreti..
A 32 kg child sits at one end of a3.4 m long seesaw. Where should her 65 kg father sit so the center of mass will be at the center of theseesaw?
a spring is first stretched 2.0 cm from its unstressed length. it is then stretched an additional 2.4 cm. how does the
question the x y and z components of a magnetic field are bx 0.12 t by 0.14 t and bz 0.17 t. a 25 cm wire is
q1. a father m 70 kg and son m 45 kg are standing facing each other on a frozen pond. the son pushes on father and
At one time, television sets used "rabbit-ears" antennas. Such an antenna consists of a pair of metal rods. The length of each rod can be adjusted to be one-quarter of a wavelength of an electromagnetic wave whose frequency is 125 MHz. How long is ea..
A 2.00-g charged particle is released from rest in a region that has a uniform electric field = (160 N/C), Determine the charge of the particle
A 790-N cliff diver in Alcapulco drops from a cliff 20.60 m above the water's surface. If friction is disregarded, what is the cliff diver's speed just before striking the water.
a golfer putting on a green requires three strokes to hole the ball. during the first putt the ball rolls 5.9 m due
Two ball, of equal masses mA = 40g and mB = 60g, are suspendedas shown. What is the velocity of each ball after the elastic collision
Mars rotates on its axis once every 1.02 days (almost the same as Earth does). (a) Find the distance from Mars at which a satellite would remain in one spot over the Martian surface. (Use 6.42 1023 kg for the mass of Mars.) m (b) Find the speed of th..
a test rocket is fired vertically upward from a well. a catapult gives it an initial speed of 81.0 ms at ground level.
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