Astronomers initially had difficulty identifying the emission lines in quasar spectra at optical wavelengths because

The force of friction on a sliding object is 10 n. the applied force needed to maintain a constant velocity is

What two things are a included when describing force? Question 3 options: Size and direction Strength and size Direction and mass Magnitude and direction

you often hear people particularly TV announcers talk about "high rate of speed" what do you think they mean according to the specifics of physics definitions what are they really saying

Two charged particles are projected into a magnetic field that is perpendicular to their initial velocities. If the charges are deflected in opposite directions, what does this tell you about them? (Ignore the interaction between these two particles.

Why did scientists agree to use one system of measurement

Two kids are on a merry-go-round that is turning at a constant rate. ariel is near the outer edge, and bob is closer to the center. ariel has answer (smaller, the same, or greater angular speed?

Visit this website and locate the element mercury, whose chemical symbol is Hg. Click on the square to read about the history, properties, and uses of mercury. Name three uses for mercury.

Ten seconds after starting from rest, a car is moving at 40 m/s. what is the car's acceleration in meters per second per second?

A student builds a simple circuit and a magnet under one of the circuit wires. When the switch is closed charges flow int the circuit and the wire moves

Cite an example in which a force is exerted on an object without doing work on the object