Answer:
divide the velocity of the wave by the wavelength. Write your answer in Hertz, or Hz, which is the unit for frequency. If you need to calculate the frequency from the time it takes to complete a wave cycle, or T, the frequency will be the inverse of the time, or 1 divided by T.
Explanation:
Answer: C. Both observation 1 and observation 2
Explanation: A geocentric model shows the stars and the sun and where they move to.
God bless. <3
Answer:
34000 J or 34 kJ
Explanation:
From the question, The energy needed to just melt the ice cube does not requires any external temperature or change in temperature, Hence it is called latent heat
By Applying,
Q' = C'm........................ Equation 1
Where Q' = Latent heat, C' = Specific latent heat of fusion of water, m = mass of ice.
Given: C' = 340000 J/kg, m = 100 g = 0.1 kg
Substitute into equation 1
Q' = 0.1(340000)
Q' = 34000 J
Q' = 34 kJ
Answer:
Car moving at 70 miles per hour
Explanation:
A scalar is a quantity that can be fully described by magnitude alone.
Examples of scalar quantities include: Distance and speed
Something is not a scalar quantity when it is given direction. When this happens, it becomes a vector quantity.
Thus, from the choices, we can see that the car moving at 70 miles per hour is the scalar quantity as it is the only choice without a direction.
The answer for this would be "B".
