Answer: D
Explanation:
The net force acting on an object is equal to the resultant of the forces acting on the object itself.
In object A), we see that the vertical forces are balanced (+3 N upward and -3 N downward), as well as the horizontal forces (+5 N right and -5 N left), so the net force is zero.
In object B), the vertical forces are balanced (+3 N upward and -3 N downward). The horizontal force (5 N left) is not balanced, so it produces a net force, however this net force is towards left.
In object C), there are only two vertical forces which are balanced (+20 N upward and -20 N downward), so the net force is zero.
In object D), there are only two vertical forces which are not balanced, and the net force is +40 N (upward) - 25 N (downward) = +15 N upward.
Given:
The average temperature of the outer space near the earth is T_f=50.3 °F
To find:
Convert the given temperature to kelvin(K)
Explanation:
The temperature can be converted from degree Fahrenheit to kelvin using the formula,
On substituting the known values,
Final answer:
Thus 50.3 °F is equal to 283.17 K
Give me some answer choices and i will be happy to help
Answer:
The Planck constant, or Planck's constant, is a fundamental physical constant denoted h, and is of fundamental importance in quantum mechanics. A photon's energy is equal to its frequency multiplied by the Planck constant. Due to mass–energy equivalence, the Planck constant also relates mass to frequency.
<h3>Theory:</h3>
Planck postulated that the energy of light is proportional to the frequency, and the constant that relates them is known as Planck's constant (h). His work led to Albert Einstein determining that light exists in discrete quanta of energy, or photons.
E = hf