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Why is the consumption of a plant part not always negative for a plant? (clue: think about a plant structure that has evolved to be attractive to herbivores)
A 0.100 kg white ball moving with a velocity of 5 m/s along the positive x-axis hits a stationary blue ball of the same mass. Determine what is the final y-momentum of the system
a brass ring of diameter 10.00 cm at 20.0degc is heated and slipped over an aluminum rod with a diameter of 10.01 cm at
A horizontal circular platform rotates counterclockwise about its axis at the rate of 0.875 rad/s. You, with a mass of 72.3 kg, Calculate the total angular momentum of the system.
A sound wave, traveling at 357 meter per second, is emitted by the foghorn of a tugboat. An echo is heard 1.73 second later. Determine how far away is the reflecting object
A candle of height 2.0 cm is placed 10.0 cm in front of a diverging (concave) lens of focal length -6.0 cm. Where is the image of the candle
An elastic (head-on) collision occurs between two objects. Object one has a mass of 23.9 kilogram and is initially moving to the right with a speed of 3.97 m/s. Find the magnitude and direction of velocity of object one after the collision
a hiker throws a stone from the upper edge of a vertical cliff. the stone's initial velocity is 25m/s directed at 40 degrees. with the face of the cliff. whats the height of the cliff?
A car battery with a 12 V emf and an internal resistance of 0.035 is being charged with a current of 60 A. What is the rate Pr of energy dissipation inside the battery
Workers are dragging a 610kg block up a dirt ramp that isinclined at 13o above the horizontal. They are exertinga 5600-N force parallel to the ramp. The block is accelerating at0.49 m/s2
Calculate the rest energy of an electron in joules and Calculate the rest energy of an electron in MeV (1MeV=1.60×10?13J)
An astronaut at rest on Earth has a heartbeat rate of 70 beats/minute. Find what will this rate be when she is traveling in a spaceship at 0.90c as measured by an observer also in the ship
i accurately draw the field both scalar equipotential and vector electric lines between a positive point charge and an
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