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
Answer: C
You might also like to view...
Which of the following sequences of electromagnetic radiation is arranged in the order of increasing energy?
A) Gamma rays, X-rays, infrared radiation, and radio waves B) Radio waves, microwaves, gamma rays, and ultraviolet radiation C) Visible light, ultraviolet radiation, X-rays, and gamma rays D) Visible light, microwaves, radio waves, and infrared radiation
The tree of life
A) traces back the evolution of all mammals to a common ancestor B) classifies organisms according to their physical appearance C) illustrates the biochemical and genetic relationships between the different domains of life D) is a name for the first organism from which all life originated
An aluminum electric tea kettle with a mass of 500 g is heated with a 500-W heating coil
How long will it take to change the temperature of 1.0 kg of water from 18°C to 98°C in the tea kettle? The specific heat of aluminum is 900 J/kg ? K and that of water is 4186 J/kg ? K. A) 5.0 minutes B) 7.0 minutes C) 12 minutes D) 15 minutes E) 18 minutes
A positron is the ______________of an electron
Fill in the blank(s) with correct word