Answer:
B. Nuclear to Electrical
Explanation:
Atoms are split at power plants to create electricity. The energy conversion in this process is from nuclear to electrical energy.
- When atoms are split, nuclear energy is released.
- Some part of the mass of the atom is converted to energy.
- The nuclear energy released is expressed as heat energy.
- This energy is used to heat water in boilers when produces steam that are used to drive the movement of turbines.
- This in turn generates electricity.
Answer:
117.72 N
Explanation:
The given parameters are;
The mass m₁ = 2.0 × 10³ kg
The mass m₂ = 4.4 × 10² kg
The mass of the man, m₃ = 6.0 × 10 kg
The condition of the interaction of the surfaces = Frictionless surfaces
The
The tension in the string = The downward force = The weight of (m₂ + m₃) = (m₂ + m₃) × g
Let <em>a</em> represent the acceleration of the connected masses due to the weight of m₂, and m₃, we have;
(m₁ + m₂ + m₃) × a = (m₂ + m₃) × g
∴ a = (m₂ + m₃) × g/(m₁ + m₂ + m₃)
Which gives;
a = (4.4 × 10²+ 6.0 × 10) × 9.81/(2.0 × 10³+ 4.4 × 10²+ 6.0 × 10) = 1.962
The downward acceleration, a = 1.962 m/s²
The apparent weight of the man = The mass of the man, m₃ × The acceleration, <em>a</em>
∴ The apparent weight of the man = 6.0×10 kg ×1.962 m/s² = 117.72 N
Answer: Convection is the transfer of heat in fluids such as liquids and gases.
Explanation: Any difference in their temperature will cause a transfer of heat. For convection warm fluids rises since it becomes less dense and cooler fluids sinks.
Im srry i dont know the answer hehe
Answer:
B = 4/3 ( i + j + k )
Explanation:
I = 3 k
L = 5 x 10⁻² m
F = - 0.2 i + 0.2 j
Let magnetic field be B
B = B₁ i + B₂ j + B₃ k
F = L ( I x B )
= 5 x 10⁻² 3 k x ( B₁ i + B₂ j + B₃ k )
= 15 x 10⁻² B₁ j - 15 x 10⁻² B₂ i
Given
F = - 0.2 i + 0.2 j
equating equal terms
15 x 10⁻² B₂ = .2
15 x 10⁻² B₁ = .2
B₁ = .02 / 15 x 10⁻² = 20 / 15 N
B₂ = .02 / 15 x 10⁻² = 20 / 15 N
Now wire is rotated so that current flows in positive x direction
I = 3 i
F = . 2 k
F = L ( I x B )
= 5 x 10⁻² x 3 i x ( B₁ i + B₂ j + B₃ k )
= 15 x 10⁻² B₃ k
15 x 10⁻² B₃ = .2
B₃ = .2 /15 x 10⁻²
B₃ = 20 /15
B = B₁ i + B₂ j + B₃ k
20 /15 9 ( i + j + k )
B = 4/3 ( i + j + k )
