Sound travels at a rate of 340 m/s in all directions through air.
- University of Cambridge / BAM 490
- 26 Jul 2022
- Price: $5
- Science Assignment Help / Physics Assignment Help
Question 1:
Sound travels at a rate of 340 m/s in all directions through air. Matt rings a
very loud bell at one location, and Steve hears it sometime later at his
location 450 meters to the south. How long did it take the sound to travel from
the bell to Steve's location? a) 0.76 s b) 1.3 s c) 150,000 s d) 790 s
Question 2: Danny sails a boat downstream. The
wind pushes the boat along at 21 km/hr. The current runs downstream at 15
km/hr. What is the actual velocity of the boat?
a) 6.0 km/hour, downstream
b) 1.4 km/hour, downstream
c) 310 km/hour, downstream
d) 36 km/hour, downstream
Question 3: Briefly
explain why did the alpha particles bounce back during Rutherford's
experiments?
a) They hit other
alpha particles.
b) They hit
electrons.
c) They hit positive
charges in the gold atoms.
d) They hit the
collector film.
Question 4: A cylinder
has a height of 5.3 cm and a diameter of 3.0 cm. What is its volume?
a) 25.0 cm3
b) 66.2 cm3
c) 149.9 cm3
d) 37.5 cm3
USA 
India