What are classes of stars?

Two loudspeakers emit sound waves along the x-axis. The sound has maximum intensity when the speakers are 22 cm apart. The sound intensity decreases as the distance between the speakers is increased, reaching zero at a separation of 61 cm

A car travels along a straight road at a steady 40 MPH. Are the forces on the car balanced or unbalanced? Explain.

Why isn't the fit perfect if all the continents used to be Pangea?

Does gas have charged particles?

When light is reflected by a mirror, the angle of an incidence is always? A) greater than the angle of reflection B) 90° with respect to the reflecting surface C) equal to the angle of reflection D) less than the angle of reflection

What is the weight, in pounds, of a 185-kg object on jupiter?

Scientific laws and theories did not begin as questions and hypothesis? True or false

A substance has an empirical formula of ch2 and a molar mass of 56 grams per mole. The molecular formula for this compound is

An emf is induced by rotating a - turn, diameter coil in the Earth's magnetic field. What average emf is induced, given the plane of the coil is originally perpendicular to the Earth's field and is rotated to be parallel to the field in

If the first maximum of one circular diffraction pattern passes through the center of a second diffraction pattern, the two sources responsible for the pattern will appear to be a single source. A. True. B. False