Density is a material property, so the second cube will have the same density as the first.
Answer:
a)
b) 
Explanation:
The net force on the car must produce the centripetal acceleration necessary to make this circle, which is 
. At the top of the circle, the normal force and the weight point downwards (like the centripetal force should), while at the bottom the normal force points upwards (like the centripetal force should) and the weight downwards, so we have (taking the upwards direction as positive):
Which means:
The limit for falling off would be 
, so the minimum speed would be:
Answer:
38,437.5
Explanation:
Density(d)= 102.5g/ml
Volume (v)=375ml
Mass(m) = ?
D =m/v
102.5= m/375
102.5*375=m
38,437.5=m
therefore Mass = 38,437.5g/ml.
Wavelength decreases
Explanation:
When the frequency of a wave increases from 200hz to 300hz, the wavelength of the whale noise will decrease.
- Frequency is the amount of wave that passes through a point at a particular time. The higher the frequency, the more the number of wave passing a particular point.
- The wavelength of a wave is the distance between two successive crest or trough in a wave. The longer the wavelength, the more the separation between a wave crest.
- A wave is a disturbance that consistently transmits energy.
When the number of wave passing through a point increases, the wavelength is reducing.
Wavelength and frequency are inversely related.
Learn more:
Frequency and wavelength brainly.com/question/5882803
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