Density = mass divided by volume
Density = mass / volume D=m/v
Mass= 12.6 g
Volume=(4.1 cm)³ = 4.1 cm x 4.1 cm x 4.1 cm = 68.921 cm³
Density =12.6 g / 68.921 cm³ = 0.1828 g/cm³
Speed = Starting speed + (time + acceleration)
Starting speed is 0, acceleration is 2 m/s, speed is 30
30 = 0 + 2t
t ( stands for time ) = 15
The speed of the wave in water is 833.33 m/s
The given parameters;
- depth of the wrecked ship, d = 1000 m
- frequency of the wave transmitted, f = 50 kHz
- time of motion of the echo, t = 2.4 s
The speed of the wave in water is calculated by applying echo equation as shown below;
Thus, the speed of the wave in water is 833.33 m/s
Learn more here: brainly.com/question/23433611
Answer:
A) A warm wire
Explanation:
A warm wire has the most resistance. Heating the metal wire causes atoms to vibrate more, which in turn makes it more difficult for the electrons to flow, increasing resistance. Heating the wire increases resistivity.