What type of spectrum is emitted by a low-density luminous cloud of hot gases?

What is the force being applied to an object with a mass of 12 kg and an acceleration of 4 m/s 2?

A slit 0.380 mm wide is illuminated by parallel rays of light that have a wavelength of 600 nm. The diffraction pattern is observed on a screen that is 1.40 m from the slit. The intensity at the center of the central maximum (θ=0∘) is I0.

How do we calculate the restoring force according to Hooke's law? A) spring constant * displacement B) velocity * mass C) acceleration * length D) softness * mass

Magnetic fields are produced either by electric currents or time-varying electric fields. a. True b. False

A student went to a hill station early in the morning, he could hear the echo of his clap after 0.1 second. When he went to the same place in the afternoon, he could not hear the echo at all, explain the reason for his changed behaviour.

A person walks up a stalled escalator in 25 s. When standing on the same escalator, now moving, she is carried up in 16 s. How much time in seconds would it take her to walk up the moving escalator?

Does the temperature increase during melting yes or no

Is this statement true or false? The next generation of nuclear power plants being built in California and South Africa are even safer and more efficient than previous generations of power plants.

Part C At what speed does the wreckage move if one car was driving north and one east? Express your answer to two significant figures and include the appropriate units. ! HA C ? Value Units Submit Request Answer Provide Feedback

Which person below is experiencing a delusion? A. Imani, who reads a lot and thinks she will go to an Ivy League school O B. Nia, who thinks that she is the daughter of the president and an extraterrestrial O C.