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Three identical (massless) springs are hung from the ceiling.
Spring 1: Nothing hung from spring. The spring's bottom is0.2 m below the ceiling.
Spring 2: A 5 N object is hung from the spring. The spring's bottom is 0.6 m below the ceiling.
Spring 3: An object of unknown weight is hung from the spring. The spring's bottom is 0.8 m below the ceiling.
a) Discover the spring constant that each spring has in. __________ N/m
b) Discover the weight of the unknown object._________ N
A magnetic field has a magnitude of 0.0018 T, and an electric field has a magnitude of 3.4 × 103 N/C. Both fields point in the same direction. find the magnitude of the net force that acts on the charge
A single square loop of wire has a resistance of 2 Ohm. The lengthof each side of the square is 0.5m. What is the current flowing in the loop
A 4.5 kg block is given an initial speed of 14 m/s up an incline plane of angle of 45. Calculate the maximum distance the block moves up the plane
when a piece of solid cu metal is put into an aqueous solution of hcl a gas of hcl a gas evolves and the solution turns
A 1100 kg cannon, which fires a 50 kg shell witha speed of 506 m/s relative to the muzzle, is set at anelevation angle of 39° above the horizontal. At what angle with the ground is the shell projected
an 82 kg logger is standing on a stationary 360 kg log floating at rest in a pond. the logger begins to walk along the
An object, which is initially at rest on a frictionless horizontal surface, is acted upon by four constant forces. How much total work is done on the object in 4.44 seconds
q1. a 4.00 x 100 g glass coffee cup is 22.0 c at room temperature. it is next plunged into hot dishwater at the
A dentist's drill starts from rest. After 2.90 s of constant angular acceleration it turns at a rate of 2.0 multiply.gif 104 rev/min. Determine the angle (in radians) through which the drill rotates during this period
A satellite rocket weighing 200,000 N acquires a speed of 2000 m/s in 1 minute after launching. What is its kinetic energy one minute after launching
suppose a car is traveling at 16.3 ms and the driver sees a traffic light turn red. after 0.592 s has elapsed the
A helium balloon lifts a basket and cargo weighing 1500. N understandard conditions. What is the minimun volume of the balloon? Use1.29 kg/m3 for density of air and 0.178 kg/m3 for density of helium.
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