An 80-g particle moving with an initial speed of 50 m/s in the positive x direction strikes and sticks to a 60-g particle moving 50 m/s in the positive y direction. How much kinetic energy is lost in this collision?
a. 96 J
b. 89 J
c. 175 J
d. 86 J
e. 110 J
d
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What parameters determine the position of a galaxy's Galactic Habitable Zone?
A) only the amount of heavy elements in the disk B) both the amount of heavy elements AND the amount of radiation from the center C) only the temperature in the galactic disk D) only the amount of harmful radiation from the center
Two resistors of values 6.0 and 12.0 W are connected in parallel. This combination in turn is hooked in series with an 8.0-W resistor and a 24-V battery. What is the current in the 12-W resistor?
a. 1.3 A c. 12 A b. 4.0 A d. 0.67 A
A simply supported steel beam of length L 5 1.5 m and rectangu-lar cross section (h 5 75 mm, b 5 20 mm) carries a uniform load of q 5 48 kN/m that includes its own weight. The maximum transverse shear stress on the cross section at 0.25 m from the left support is approx-imately:
(A) 20 MPa
(B) 24 MPa
(C) 30 MPa
(D) 36 MPa
Which experiences the greatest electrical force in an electric field?
A) alpha particle B) beta particle C) electron D) gamma ray E) all the same