Answer:
1.4 m
Explanation:
v = Speed of sound in water = 1400 m/s
f = Frequency of sound = 1000 Hz
= Wavelength
When we multiply the frequency and the wavelength of a wave we get the velocity of sound in that medium
The wavelength of the sound waves in water is 1.4 m
Answer:
The bigger the object, the more heat that can be transferred. Ex: An iceberg would transmit more heat than a kettle
Explanation:
I think its the sun not 100% sure...
1.
63-48
= 15 ml
Since the water rises 15 ml in the graduated cylinder, its volume is 15 ml^3
2. 43 -36
=7ml^3
Answer:
Speed does the 60-kg skater acquire relative to the ice = 0.281 m/s
Explanation:
Momentum is conserved in this case.
Initial momentum = Final momentum.
Initial momentum = Initial momentum of skater 1 + Initial momentum of skater 2
Initial momentum = 45 x 0 + 60 x 0 = 0 kg m/s
Final momentum = 45 x 0.375 + 60 x u = 16.875 + 60 u
Here we need to find u.
We have
0 = 16.875 + 60 u
u = -0.281 m/s
Speed does the 60-kg skater acquire relative to the ice = 0.281 m/s