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A projectile explodes at the top of its trajectory and breaks into two pieces with one piece having five times the mass of the other. The smaller piece returns to precisely the same point at which the projectile was launched. Where does the bigger piece land in terms of the horizontal distance between the launch point and the point at which the object exploded? (Assume that you can neglect air resistance).
If you know the mass of a star and a planet's radius and speed at perihelion (closest approach to the star), What is its speed and distance from the Sun at aphelion
In recent years, a number of nearby stars have been found to possess planets. Suppose, the orbital radius of such a planet is found to be 3.1 1011 m, with a period of 1140 days
An object of mass 6.8kg is attached to a spring of force constant 1870 N/m. Calculate the maximum velocity the object has during its motion
Two pith balls are each suspended on two strings of equal length of 9.5cm from the same point. How many electrons were removed from each pith ball
Two blocks rest on a horizontal frictionless surface. (top block weighs xkg, the bottom box weighs 10kg). what is the mass of the top box
What is the ratio of the amplitude
An electron moves in the positive x-direction a distance of 2.31 m in 2.85·10-8 s, bounces off a moving proton, and then moves in the opposite direction a distance of 1.53 m in 3.33·10-8 s.
A mechanic tests the tension in a fan belt by pushing against it with his thumb, What is the tension in the belt (while the mechanic is pushing)
When two identical ions are separated by a distance of 8.6×10?10 m, How many electrons are missing from each ion
the driver of a 2000 kg car moving at 30 m/s presses on the break pedal. if the braking force is 10,000 N how far does the car travel before stopping
A 40.0 ball of clay travelling east at 6.00 collides and sticks together with a 20.0 ball of clay travelling north at 5.00. What is the speed of the resulting ball of clay.
A plane accelerates from rest at a constant rate of 5.00 along a runway that is 1800 long. What is the time needed to take off
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