On a horizontal frictionless floor, a worker of weight 0.900 kN pushes horizontally with a force of 0.200 kN on a box weighing 1.80 kN. As a result of this push, which statement could be true?
A) The box will not move because the push is less than its weight.
B) The worker and box will both have an acceleration of 1.08 m/s2, but in opposite directions.
C) The worker and box will both have an acceleration of 2.17 m/s2, but in opposite directions.
D) The worker will accelerate at 1.08 m/s2 and the box will accelerate at 2.17 m/s2, but in opposite directions.
E) The worker will accelerate at 2.17 m/s2 and the box will accelerate at 1.08 m/s2, but in opposite directions.
E
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In each of the cases shown below, determine the direction of the magnetic field that is causing the charged particle to experience the magnetic force shown.
A. Forward
B. Backward
C. Rightward
D. Leftward
E . Into the paper
F . Out of the paper
T . Impossible
Interstellar matter is distributed very evenly through the galaxy
Indicate whether the statement is true or false
The energy needed to change a He+ ion in the ground state into a He2+ ion is
a. 13.6 eV b. 54.4 eV c. 112.4 eV d. 92.9 eV e. 27.2 eV
Most surface ocean currents are due to
A) melting polar glaciers. B) river flow into the ocean. C) winds. D) density differences in the vertical profile of the ocean.