A 2.0-kg block slides down a frictionless incline from point A to point B. A force (magnitude P = 3.0 N) acts on the block between A and B, as shown. Points A and B are 2.0 m apart. If the kinetic energy of the block at A is 10 J, what is the kinetic energy of the block at B?
a.
27 J
b.
20 J
c.
24 J
d.
17 J
e.
37 J
c
You might also like to view...
Why can't Venus's atmosphere break up into small cyclonic storms, like Earth? a. Venus rotates too slowly
b. Venus rotates backwards. c. Venus has a long orbital period. d. Venus has too much CO2 in its atmosphere. e. Venus has no ozone layer to support cyclonic storms.
A mass m = 2.0 kg is attached to a spring having a force constant k = 290 N/m as in the figure. The mass is displaced from its equilibrium position and released. Its frequency of oscillation (in Hz) is approximately
?
?
A. 12. B. 0.50. C. 0.010. D. 1.9. E. 0.080.
A charged particle moves in a region of uniform magnetic field along a helical path (radius = 4.0 cm, pitch = 20 cm, period = 2.0 ms). What is the speed of the particle as it moves along this path?
a. 0.13 km/s b. 0.10 km/s c. 0.16 km/s d. 0.23 km/s e. 0.06 km/s
The pressure inside a commercial airliner is maintained at 1 ATM (1.01 × 10^5 N/m2). What is the outward force exerted on a 1.0 m × 2.0 m cabin door if the outside pressure (at 10 km height) is 0.3 ATM?
a. 1.4 × 10^2 N b. 1.4 × 10^3 N c. 1.4 × 10^4 N d. 1.4 × 10^5 N e. 7.0 × 10^3 N