A small car of mass 1200 kg traveling east at 60m/s collides at an intersection with a truck of mass 3000 kg that is traveling d
2 answers:
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Complete question:
while hunting in a cave a bat emits sounds wave of frequency 39 kilo hartz were moving towards a wall with a constant velocity of 8.32 meters per second take the speed of sound as 340 meters per second. calculate the frequency reflected off the wall to the bat?
Answer:
The frequency reflected by the stationary wall to the bat is 41 kHz
Explanation:
Given;
frequency emitted by the bat, = 39 kHz
velocity of the bat, = 8.32 m/s
speed of sound in air, v = 340 m/s
The apparent frequency of sound striking the wall is calculated as;
The frequency reflected by the stationary wall to the bat is calculated as;
Answer:
(A) Speed will be
(b) Change in kinetic energy =
Explanation:
We have given mass of proton
Acceleration of the proton
Initial velocity u = m/sec
Distance traveled by proton s = 3.90 cm = 0.039 m
(a) From third equation of motion we know that
(b) Initial kinetic energy
Final kinetic energy
So change in kinetic energy