Radiative energy is
A) heat energy.
B) energy from nuclear power plants.
C) energy carried by light.
D) energy used to power home radiators.
E) energy of motion.
C) energy carried by light.
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A string of length 2.5 m is fixed at both ends. When the string vibrates at a frequency of 85 Hz, a standing wave with five loops is formed. (a) Determine the distance between two adjacent nodes
(b) Determine the wavelength of the waves that travel on the string. (c) Determine the speed of traveling waves on this string. (d) Determine the fundamental frequency of this string.
Two point charges each have a value of 30.0 mC and are separated by a distance of 3.00 cm. What is the electric field midway between the two charges? (ke = 8.99 × 10^9 N•m2/C2)
a. 40.5 × 10^7 N/C c. zero b. 20.3 × 10^7 N/C d. 10.1 × 10^7 N/C
The seriousness of an asteroid collision is gauged by the ______________ scale
a. Torino b. Richter c. Decibel d. Sunami e. Star
If the current increases in a solenoid, the induced emf acts to
A) decrease the flux. B) increase the flux. C) first increase then decrease the flux. D) first decrease then increase the flux. E) have no effect on the flux.