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Q. A rifle that shoots bullet at 460 m/s is to be aimed at a target 45.7m away and levelwith the rifle . how high above the target must the rifle barrel be pointed so that the bullets hits its target?
Q. Two point charges are on the y-axis, one of magnitude 3.0 x10-9 C at the origin and a second of magnitude 6.0 x10-9 C at the point y = 30 cm. Calculate the potential at y = 60 cm.
What is the magnitude of vertical component of its velocity as it strikes the ground.
An ideal monatomic gas at first has a temperature of 311K and a pressure of 7.57atm. It is to expand from volume 571 cm3 to volume 1390 cm3.
Is the collision completely elastic
A long, straight wire runs along the y-axis. The wire carries a current in the positive y-direction that is changing as a function of time according to i = 8 A + (0.2 A/s)t. A loop of wire is placed in the xy-plane near the y-axis. The loop has di..
What is an initial velocity of the boulders
An explorer in dense jungles of equatorial Africa leaves his hut. He takes 41 steps at an angle 45 north of east, then 81 steps at an angle 60 north of west, then 51 steps due south. Suppose his steps all have equal length. Save him from becoming ..
What is the magnitude of the normal force exerted by the car.
If it takes 3.60 x10-13 s for a nitrogen molecule to hit the wall and rebound with the same speed but moving in an opposite direction (assumed to be the negative direction), what is the average acceleration of the molecule for the period of this t..
A 165 pF capacitor is connected in series with an unknown capacitor, and as a series combination they are connected to a battery with emf of 21.3 V. If the 165 pF capacitor stores 112 pC of charge on its plates, what is the unknown capacitance.
What is vertical component of the acceleration
If the mass of both weights is 150 gm, the first mass is located 30 north of east, the second mass is located 30 south of east, and the transducer sensitivity is 0.5 volts/Newton, how large a voltage do you expect to measure? Suppose the transducer h..
How various revolutions per minute would a 21 -diameter Ferris wheel need to make for the passengers to feel "weightless" at the topmost point.
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