An arrow of mass 20. g is shot horizontally into a bale of hay, striking the hay with a constant velocity of 60. m/s. It penetrates a depth of 20. cm before stopping. What is the average stopping force acting on the arrow?
What will be an ideal response?
180. N
You might also like to view...
The magnetic field of an electromagnetic wave has a peak value of 5.0 × 10-10 T. What is the intensity of the wave?
A) 1.0 × 10-13 W/m2 B) 1.5 × 10-5 W/m2 C) 3.0 × 10-5 W/m2 D) 2.0 × 10-13 W/m2 E) 7.5 × 105 W/m2
Solenoid ?1 has a length L, cross-sectional area A, and N turns. Solenoid ?2 has a length 2L, cross-sectional area 2A, and 2N turns. Which solenoid has the greater magnetic field at its center when equal currents are going through them?
a. ?1 b. ?2 c. Both have the same magnetic field. d. Since it depends on the values of A and L, none of the above are correct.
List the fundamental forces in nature
What will be an ideal response?
The logarithm of the ratio of the initial cross-sectional area to the area at the location of fracture of a specimen is equal to the _____________ to fracture.
Fill in the blank(s) with the appropriate word(s).