Constant Acceleration Kinematics: At the instant a traffic light turns green, a car that has been waiting at the intersection starts ahead with a constant acceleration of 2.00 m/s2. At that moment a truck traveling with a constant velocity of 15.0 m/s overtakes and passes the car.(a) Calculate the time necessary for the car to reach the truck.(b) Calculate the distance beyond the traffic light that the car will pass the truck.(c) Determine the speed of the car when it passes the truck.
What will be an ideal response?
(a) 15.0 s (b) 225 m (c) 30.0 m/s
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Sound traveling in air at 23
enters a cold front where the air temperature is 2
If the frequency of the sound is 1500 Hz, what is the difference in the wavelength between the cold air and the warm air?
A. 0.009 m B. 0.019 m C. 0.067 m D. 0.058 m
When an acrobat hangs motionless from a pair of rings
a. she has no measurable weight. b. her weight depends on the angles the ropes make with the ceiling. c. her weight is reduced by the upward force the rings exert on her. d. her weight is increased by the upward force the rings exert on her. e. she exerts a gravitational force on the Earth that is equal to the sum of the forces the rings exert on her.
Barium-137 emits a gamma ray from an excited state (137Ba*). What is the resulting daughter nuclide?
A. 137Cs B. 137Ba C. 137La D. 136Ba E. 136Cs
Dikes are examples of ______________ plutons
Fill in the blank(s) with correct word