A sled is moving along a horizontal surface with a speed of 5.7 m/s. It then slides up a rough hill having a slope of 11° above the horizontal. The coefficient of kinetic friction between the sled and the surface of the hill is 0.26
How far along the surface does the block travel up the incline?
3.7 m
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Which of the following statements describes a neutral solution?
A) [H3O+] > [OH-] B) [H3O+] < [OH-] C) [H3O+] × [OH-] ? 1 × 10-14 D) [H3O+]/[OH-] = 1 × 10-14 E) [H3O+]/[OH-] = 1
The largest nearby cluster of galaxies lies about 17 Mpc distant in
A) Sagittarius. B) Sculptor. C) Coma Bernices. D) Virgo. E) Ursa Major.
If the 5th order minimum in the diffraction pattern is at 40°, at what angle is the 1st order minimum?
A) 8.0° B) 3.4° C) 4.0° D) 7.4° E) 1.7°
A worker pushes a sled with a force of 38.0 N over a level distance of 3.60 m. If a frictional force of 16.0 N acts on the wheelbarrow in a direction opposite to that of the worker, what net work is done on the wheelbarrow?
a. 194 J b. 137 J c. 57.6 J d. 79.2 J e. 6.11 J