Answer: 216.2 J
Explanation: The heat energy of copper is the expressed in Q=mc∆T. First make sure that the mass 0.0693 kg is converted into grams to cancel both units.
Q= 69.3 g x 390 J/g°C x 26 °C-18°C = 216.2J
Answer:
Sporulation
the formations of spores from vegetative cells during unfavorable environmental conditions
Fragmentation
The asexual reproduction, where the body of the organism breaks into smaller pieces
Answer:
The percentage change in frequency is 10%.
Explanation:
Given that,
Amplitude decreases by 1/10 per second.
Resonance = 10 Hz
We need to calculate the change in frequency
Using formula of change in frequency

Put the value into the formula


We need to calculate the resonant frequency
Using formula of resonant frequency

Put the value into the formula


We need to calculate the percentage change in frequency
Using formula of percentage change in frequency


Hence, The percentage change in frequency is 10%.
Divide 2500 g by 500 cc. The quotient is 5 g/cc ... the density.
The answer is D. As the ambulance gets closer, the sound waves are compressed relative to the person; so the frequency increases.