Answer:
A. velocity and wavelength
Explanation:
When a wave travels from one medium to another it undergoes refraction which results to the change in direction.
Refraction of a wave is one of the property of waves that occurs when a wave changes direction when it passes from one medium to another. This occurs as a result of bending of the wave which occurs since the mediums involved are of different density and refractive index.
Apart from the change in direction, refraction is accompanied by the change in wavelength of a wave and thus a change in speed.
Answer:
A. velocity and wavelength
Explanation:
Answer: The thermal energy transfer is When a fluid, such as air or a liquid, is heated and then travels away from the source, it carries the thermal energy along.
Explanation: heat transfer is called convection. hopefully this was helpful.
Answer:
the correct option is C
Explanation:
The intensity of a lamp depends on the power of the lamp that is provided by the current flowing over it, therefore the intensity would increase if we raise the current.
Another way to increase the intensity is to decrease the area with a focusing lens, as the intensity is power over area, decreasing the area increases the power.
When we see the possibilities we see that the correct option is C
Answer:
560 watts
The rate of energy dissipation is 560 W
Explanation:
Rate of energy dissipation is the rate of energy consumption in the x-ray tube.
P = VI
Given;
Voltage V = 80 kV = 80,000
Current I = 7mA = 0.007 A
Substituting the given values;
P = 80,000 V × 0.007A
P = 560 Joules per second
P = 560 watts
The rate of energy dissipation is 560 W
Answer:
The add mass = 5.465 kg
Explanation:
Note: Since the spring is the same, the length and Tension are constant.
f ∝ √(1/m)........................ Equation 1 (length and Tension are constant.)
Where f = frequency, m = mass of the spring.
But f = 1/T ..................... Equation 2
Substituting Equation 2 into equation 1.
1/T ∝ √(1/m)
Therefore,
T ∝ √(m)
Therefore,
T₁/√m₁ = k
where k = Constant of proportionality.
T₁/√m₁ = T₂/√m₂ ........................ Equation 3
making m₂ the subject of the equation
m₂ = T₂²(m₁)/T₁²........................... Equation 4
Where T₁ = initial, m₁ = initial mass, T₂ = final period, m₂ = final mass.
Given: T₁ = 1.18 s m₁ = 0.50 kg, T₂ = 2.07 s.
Substituting into equation 4
m₂ = (2.07)²(0.5)/(1.18)²
m₂ = 4.285(1.392)
m₂ = 5.965 kg.
Added mass = m₂ - m₁
Added mass = 5.965 - 0.5
Added mass = 5.465 kg.
Thus the add mass = 5.465 kg
products. Which statement explains this difference in mass?
A. Some of the mass was transformed into neutrons during the
process.
O B. Mass was destroyed and disappeared during the process.
C. Some of the mass was transformed into gases during the
process.
D. Mass was transformed into energy during the process.
Answer:
D. Mass was transformed into energy during the process.
Answer:
C
Explanation:
Some of the mass
t or f
Answer:
Atomic mass is a value that depends on the distribution of an element's isotopes in nature and the masses of those isotopes. Circle the letter of each sentence that is true about a carbon-12 atom. ... Most elements exist as a mixture of two or more isotopes.
So the answer is true.
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