A Cannon makes a noise, and it's echo is heard 4.5 seconds later. if sound travels at 343 m/s:

a.) how far did the sound travel?

b.) how far away is the surface it reflected off of?

What is the energy required to raise the temperature of 1 g of a substance by 1°c or 1 k?

How do air molecules enable sound to travel from a radios speaker to your ears

A 0.2 kg conductor of length 0.8 m carries 2 ampere current to the right in a magnetic field. What is the magnitude and the direction of the magnetic field acting on the conductor if the net force on the rod is zero?

Sound waves travel the fastest through witch of the following

the rapid movement of gas molecules can be explained because gasses have size particles and exert attraction for other gas particles

A six - sided number cube is labeled with the number 1-6, one number on each face. Each number is used exactly once. How many possible outcomes exist when the cube is rolled two times

What will happen to an electromagnet of the electric current is lost?

How can velocity be used to calculate for an unknown distance? (Logically)

A rod made from insulating material carries a net charge, while a copper sphere is neutral. The rod and the sphere do not touch. Is it possible for the rod and the sphere to (a) attract one another and (b) repel one another? Explain.

Which of the following best explains why mutations cannot cause evolution?