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Q. A bullet is fired from ground level with a speed of 150 m/s at an angle of 30 degrees above the horizontal. What is the velocity of the bullet when it is at the highest point of its trajectory?
Q. An Earth satellite moves in a circular orbit 557 km above Earth's surface with a period of 95.59 min. What are (a) the speed and (b) the magnitude of the centripetal acceleration of the satellite?
A .228g wires are stretched between two points 77.20 cm apart. The tension in the wire is 618N. Find the frequency of the first harmonic. Reply in units of Hz.
A bus travelling along the straight road at 100km/hr-1 and the bus conductor make at 6kmhr-1 on the floor of the bus in the same direction on the bus. Find the speed of the conductor relative to road and relative to the bus. If the bus conductor now ..
A 9.40kg projectile is fired vertically upward. Air drag decreases the mechanical energy of the projectile-Earth system by 69.5kJ throughout the projectile's ascent. How much higher would the projectile have gone were air drag negligible.
make sure to label the graphs with units and values to indicate any critical points of the ball's motion.
A jogger runs 100m due east, then changes direction for the second leg of the run. At the end of the run, she is 350m away from the starting point at an angle of 25.0° north of east. What were the direction and length of her second displacement? Util..
Which of following statements is correct
An airplane flies 200 km due west from city A to city B and after that 295 km in the direction of 26.5° north of west from city B to city C.
The bullet becomes embedded in the block. If the bullet-block system compresses the spring by a maximum of 88.0 cm, what was the speed of bullet at impact with the block.
What is direction of the resultant velocity
What focal length does the lens require
Suppose a ping-pong ball and a bowling ball are rolling toward you with the same momentum, and you exert the same average force in stopping each of them.
The atomic number of lead is 82. The alpha particle is a helium nucleus, with atomic number 2.
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