Suppose you sound a 1320-Hz tuning fork when you strike a note on the piano and hear 2 beats/second. You tighten the piano string very slightly and now hear 3 beats/second. What is the frequency of the piano string? a) 1322 Hz b) 1323 Hz c) 1318 Hz d) 1317 Hz e) 1320 Hz Explain your reasoning.

Which is the best for showing percentages of different types of cars sold(gas hybrid , electric , other ) in the united states ?

What can you increase the strength of an electromagnet by

An astronaut floating in space is trying to use her jetpack to get back to her space station, but she is being pulled away by a nearby planet, as shown in the image below. her jetpack provides a constant thrust of 310 n. if she angles her jetpack in such a way that it cancels out the vertical force due to the planet's gravity, what is her net horizontal force? thaud 487 o a. 54.8 n toward the space station o b. 212.9 n toward the space station o c. 185.2 n toward the space station o d 956 n toward the space station