A bullet was fired horizontally with 20m/s from the top of a building 20m high. When the bullet was 10m above the ground, incidentally it hits a bird. Find the
time taken to hit the bird and the velocity of bullet when it hits the bird.

Consider a resistor with color code “orange blue brown gold” and a measured value of 370 ω. determine the following: nominal value, tolerance, % error, and the probability of another resistor from the same manufacturing batch having a value closer to nominal than this one. use matlab or excel to evaluate the erf function.

What sort of waves exhibit the doppler effect?

During which step of the scientific method does a scientist make an educated guess about the outcome of an experiment? a. form a hypothesis b. analyze the results c. design an experiment d. collect data