Answer:
Explanation:
speed of sound in 24 degrees celsius
345.48m/s
hence 345.48m/s x 3s = 1036.44m
The mass needed at peg 1 is a 5g mass.
The 15g should hang at peg 5.
The reason is force x distance clockwise is equal to force x distance anti-clockwise
Answer:
C. ALPHA PARTICLES
Explanation:
This is the particle emitted by a radioactive material undergoing decaying.
Alpha particle consists of two protons and two neutron. It is a helium atom with mass number 4 and atomic number 2.
Answer: 12 J
Explanation: because of the potential energy