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A jogger runs in a straight line with an average velocity of 5.1m/s for 2.1 min, and then with an average velocity of 4.9 m/s for 2.6 min. What is her total displacement in units of m. And what is her average velocity during this time in units of m/s.
A convex lens with a 10-cm focal length is in front of a concave lens with a 10-cm focal length. The lenses are separated by 40 cm. Where is the final image with respect to the convex lens
A 25 kg trunk strikes the ground with a speed of 12.5m/s. if no energy is lost from air resistance, what is the height from which trunk fell.
A grappling hook, attached to a 1.5-m rope, is whirled in acircle that lies in the vertical plane. In the absence of airresistance, to what maximum height can the hook be cast
A 4800 kg truck is parked on a 14° slope. How big is the friction force on the truck
A duck is floating on a lake with 23% of its volume beneath the water. What is the average density of the duck
After the first snow of the winter, you and your friends go sledding on the Tecumseh Street overpass of I-35. If the snow is frictionless, the length of the hill is 23 meters, and the angle of the hill is 40 degrees from the horizontal, how fast will..
A scientific calculator draws 0.60mA of current from a 6.0V battery pack. In 20 minutes of operation how many electrons flow through the calculator
A trayson crystal torpedo, traveling at 2.40 x 10^6 m/s, is lanuched against the Zargon B-Class Warship. How long(in time) must the pusle be to stop the torpedo
Consider a circuit with two resistors in parallel; R1=10 Ohm and R2=5 Ohm, Calculate the total current flowing through the battery
a proton is moving parallel to a uniform electric field. the electric field accelerates the proton and increases its
A 0.810 kg particle has a speed of 2.60 m/s at point A and kinetic energy of 8.80 J at B. What is its speed at B? reply in units of m/s.
Many people mistakenly believe that the astronauts that orbit Earth are "above gravity." Calculate g for space shuttle territory 150 km above Earth's surface. suppose Earth's mass is 6.0 1024 kg, and its radius is 6.38 106 m (6380 km). Your answer..
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