Examlex
A star has a parallax angle of 0.019 seconds of arc. How far away is this star from Earth?
True Power
The actual power consumed by a circuit, calculated as the product of the voltage, current, and the cosine of the phase angle between them in a resistive load, measured in watts.
Series RL Circuit
An electrical circuit composed of resistors (R) and inductors (L) connected in a series configuration, affecting the phase and amplitude of the circuit's response.
Inductive Reactance
The resistance offered by an inductor to alternating current, which varies with the frequency of the current and the inductance, also measured in ohms.
Power Factor
A dimensionless number between 0 and 1 that represents the ratio of the real power flowing to the load to the apparent power in the circuit.
Q16: Because the Hubble constant equals 70 km/s/Mpc,
Q17: What are the two conditions for an
Q41: The spacecraft _ captured particles that scientists
Q48: What occurs during nuclear fusion within the
Q49: Most neutron stars are the remnants of
Q49: Globular clusters have approximately how many stars?<br>A)
Q53: Gamma ray bursts are _.<br>A) too weak
Q55: Open clusters are older than globular clusters.
Q57: Helioseismology maps of rotation in the Sun's
Q79: What is the escape velocity from