Suppose a bug spatters upon your windshield as you drive down the road. Which sustains the greater change of momentum?
A) insufficient information
B) the bug
C) both the same
D) the car
C
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If a flea can jump up to 45 cm above its initial resting point, with what speed is it able to leave the ground when jumping?
A. 2.1 m/s B. 3.0 m/s C. 8.8 m/s D. 4.2 m/s
Specific heat capacity of ice = 2,000 J/kg-°C latent heat of fusion of water = 334,000 J/kg specific heat capacity of water = 4,000 J/kg-°C The 1 kg block of ice melts into water. The amount of heat absorbed by the ice as it melts is __________
Fill in the blank(s) with correct word
Light of wavelength 420 nm is incident on a slit of width 0.20 mm, and a diffraction pattern is produced on a screen that is 1.80 m from the slit. What is the width of the central bright fringe? (1 nm = 10?9 m)
a. 3.8E–3 m b. 7.6E–3 m c. 1.2E–3 m d. 1.4E–2 m e. 2.0E–2 m
A 0.600-kg piece of metal X is heated to 100°C and placed in an aluminum can of mass 0.200-kg which contains 0.500 kg of water initially at 17.3°C. The final equilibrium temperature of the mixture is 20.2°C,
what is the specific heat of metal X? The specific heats of water and aluminum are 4186 J/kg ? K (water) and 910 J/kg ? K (aluminum). A) 140 J/kg ? K B) 270 J/kg ? K C) 450 J/kg ? K D) 900 J/kg ? K