A 95 N force exerted at the end of a torque wrench gives rise to a torque of 15 N ? m. What is the angle (assumed to be less than 90°) between the wrench handle and the direction of the applied force?
A) 18°
B) 14°
C) 22°
D) 25°
Answer: A
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A main-sequence star is observed with a surface temperature of 3500 K and a luminosity 10?2 times that of the Sun. Based on the H-R diagram shown above, what is the approximate mass of this star?
A) 0.2 times that of the Sun B) 0.5 times that of the Sun C) 0.9 times that of the Sun D) 1.5 times that of the Sun
A 7.0-kg rock is subject to a variable force given by the equation
F(x) = 6.0 N - (2.0 N/m)x + (6.0 N/m2)x2 If the rock initially is at rest at the origin, find its speed when it has moved 9.0 m.
There are three ________ of elementary particles in the standard model.
Fill in the blank(s) with the appropriate word(s).
A neutron star detectable by its rapid rotation and strong magnetic field is called a(n) ________
Fill in the blank(s) with correct word