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You throw a ball at a launch speed of 4.9 m/s at an angle of 6.6 degrees to the horizontal. Assuming that the ball lands at the same level as the launch height, what is the maximum range of the ball in metres? Give your answer to 2 sf.
A capacitor is charged to a potential of 12.0 V and is then connected to a voltmeter having an internal resistance of 3.50 M?. After a time of 3.80 s, What is the time constant of the circuit
a glass window pane has an area of 3.00 m and a thickness of 0.600 cm. if the temperature difference between its faces
The gap between valence and conduction bands in silicon is 1.12 eV. How many electrons can be excited from the top of the valence band to the bottom of the conduction band by the absorption of this gamma ray
A bolt is dropped from a bridge under construction, falling 67 m to the valley below the bridge. (a) In how much time does it pass through the last 22% of its fall? What is its speed (b) when it begins that last 22% of its fall and (c) when it reache..
The moon in its orbital about the earth has a centripetal acceleration about 1/4200 of that an object dropped on Earth's surface. If the moon were twice as far away what would its centripetal acceleration be?
A Molecule of DNA is 2.17 um long. The ends of the molecule become strongly ionized: negative on one end, positive on the other. The helical molecule acts like a spring and compresses 0.78% upon becoming charged. Determine the effective spring con..
A ball of clay weighing 0.5 kg is thrown at a pendulum bob at rest weighing 4-kg. What is the velocity of the pendulum bob
two skaters each of mass m are standing a slight distance apart on a nearly frictionless horizontal surface of ice
Determine the magnitude and direction of the force on a horizontal conductor 10cm long and carrying 25 amperes of current from south to north, if places in air in a horizontal magnetic field of flux density .8 w/m2 directed from east to west.
A 2000 kg car is slowed down uniformly from 23.0 m/s to 5.00 m/s in 4.40 s. What average total force acted on the car during that time
sr-90 may be produced from an atomic bomb explosion. the half-life of sr-90 is 28.8 years. what fraction of the sr-90
Find what is the capacitance of a capacitor that stores 7 μC of charge on its plates when a voltage of 8.4 Volt is applied between them
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