The statement 'a distant star gives off a visible range of light whose color depends on its temperature' is supported by the wave model.
<h3>What is wavelength?</h3>
The wavelength can be defined as the periodic distance of a given wave that repeats in a constant way.
The emissivity of particles is a function of both wavelength and temperature of a given material/object. Visible wavelengths range from 700 nm to 400 nm (violet color).
Star temperature largely determines its color, blue stars are warmer than yellow and red stars, and red stars are cooler than yellow stars.
Learn more about visible wavelengths here:
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Work = force x distance.
force = mass x acceleration
work = mass x acceleration x diastance
use acceleration of gravity in this problem
W (J) = m (kg) x a (m/s/s) x d (m)
W = 78 x 9.8 x 6
W = 4586.4
Answer:
C) 100N
Explanation:
Formula for calculating the Weight of an object is expressed as;
Weight = mass × acceleration due to gravity
Given
Mass of the object = 10kg
Acceleration due to gravity = 9.81m/s²
Substitute into the formula above
Weight = 10×9.81
Weight = 98.1N
Hence the approximate weight of the object is 100N
Answer:
<em>Electrical power</em>
Explanation:
<em>Electrical power:</em> Electric power (P) is defined as the energy (W) used or produced or transformed per seconds.
Power = Energy produced/transformed/time taken.
P = W/t................................ Equation 1
Where t = time taken
But,
W = VIt................................ Equation 2
Substituting equation 2 into equation 1
P = VIt/t
P = VI............................ Equation 3
or
P = V²/R or P = I²R.
The unit of power is J/s or Volt-ampere is called watt (W).
Large amount of electric power are required in the industry
1 kW = 1000 W
1 MW = 1000000 W
1 h.p = 3/4 kW.
Answer:
<u><em>3 hours</em></u>
Explanation:
If the car takes 2 hours to go 40 miles, then the car can go 20 miles in 1 hour. Since the car is going 60 miles, it will take 3 hours.
Hope that makes sense :)
