When Jeff ran up a hill at 7.0 m/s, the horizontal component of his velocity vector was 5.1 m/s. What was the vertical component of Jeff's velocity?
A) 4.8 m/s
B) 4.3 m/s
C) 3.8 m/s
D) 3.4 m/s
A
You might also like to view...
The static friction force on an object
A. can never be greater than the kinetic friction force on it under the same circumstances. B. can never accelerate the object. C. can never be greater than the normal force on it. D. can never be greater than the object's weight. E. None of the choices are correct.
The coil shown in the figure has 2 turns, a cross-sectional area of 0.20 m2, and a field (parallel to the axis of the coil) with a magnitude given by B = (4.0 + 3.0t2) T, where t is in s. What is the potential difference, VA?VC, at t = 3.0 s?
A. ?7.2 V B. +7.2 V C. ?4.8 V D. +4.8 V E. ?12 V
A long straight wire lies on a horizontal table and carries an ever-increasing current toward the north. Two coils of wire lie flat on the table, one on either side of the wire
When viewed from above, the direction of the induced current in these coils is A) clockwise in both coils. B) counterclockwise in both coils. C) clockwise in the east coil and counterclockwise in the west coil. D) counterclockwise in the east coil and clockwise in the west coil.
Which of the following could be associated with a temperature increase for a fixed amount of gas?
1.a decrease in the volume at constant pressure 2.a decrease in the pressure at constant volume 3.a decrease in both the pressure and the volume 4.an increase in the pressure at constant volume