If the work done to stretch an ideal spring by 4.0 cm is 6.0 J, what is the spring constant (force constant) of this spring?
A) 6000 N/m B) 7500 N/m C) 300 N/m D) 3000 N/m E) 3500 N/m
B
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A __________ is a three-dimensional image made using a laser
Fill in the blank(s) with correct word
A 70-kg stunt artist rides in a rocket sled which slides along a flat inclined surface. At an instant when the sled's acceleration has a horizontal component of 6.0 m/s2 and a downward component of 2.8 m/s2, what is the magnitude of the force on the rider by the sled?
a. 0.83 kN b. 0.98 kN c. 0.65 kN d. 0.68 kN e. 0.72 kN
All radio telescopes are refracting telescopes
Indicate whether the statement is true or false
A particle (m = 20 mg, q = -5.0 mC) moves in a uniform electric field of 60 N/C in the positive x direction. At t = 0, the particle is moving 30 m/s in the positive x direction and is passing through the origin. Determine the maximum distance beyond x = 0 the particle travels in the positive x direction
a. 25 m b. 20 m c. 15 m d. 30 m e. 60 m