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A net force of 32 N accelerates a 4.7-kg mass over a distance of 15 m. What is the total work done by this net force?
A railroad boxcar that has " due east" momentum of 15,000 kgm/sec collides with and couples with a similar boxcar that has "due west" momentum of 20,000kgm/sec. After collision, the combination has ( ) kgm/sec total of momentum.
he car is suspended beneath the helicopter by a steel cable. Illustrate what is the lift force exerted on the air by the helicopter's rotor?
If a 120g mass was placed at the 25cm mark, and a 20 g mass at the 12 cm mark, where must a 500 g mass be placed to balance the system?
It continues to fly along the same horizontal arc, but increases its speed at the rate of 1.45 m/s2. Find out the acceleration in this situation at the moment the hawk's speed is 4.60 m/s.
Find out a magnitude and direction of the electric field
Find the horizontal component of the force exerted on the rod by the hinge and Find the vertical component of the force exerted on the rod by the hinge.
A 36 g ball is shot from a spring gun whose spring has a force constant of 529 N/m. The spring can be compressed 4 cm. How high will the ball go if the gun is aimed vertically
A solid sphere of radius R carries a volume charge density ?=?0e^r/R, Find an expression for the electric field strength at the sphere's surface
The contacts worn by a farsighted person allow her to see objects clearly that are as close as 25.0 cm, even though her uncorrected near point is 84.0 cm from her eyes, How far away is the poster actually located
Reply in m/s. Also, why does the car's mass not matter.
Calculate the x-component of vector. A uniform electric field of magnitude 375 N/C pointing in the positive x-direction acts on an electron, which is initially at rest.
George just graduated from college and is going on his first job interview. He has learned that there are two other candidates. Because of the information he has learned about the serial position effect, George asks to be either the first or the last..
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