Answer:
2100 grams
Explanation:
You multiply 2.1 kg by 1000
A wave having a frequency of 200 Hz means that 200 such waves pass through a point per second.
40 J
Answer:7.5V
Ohm's law, V=IR
so, V=0.3×25
V=7.5V
Answer
it will be less\
Answer: C ) 75 kilometers
Explanation: 30 + 45 = 75
