<em> Frequency is perceived by humans as pitch; The sound intensity is the amplitude; Humans can only hear a specific range of sound, usually from 20 Hz to 20,000 Hz; The factors that go into a sound are its intensity, frequency and overtones (which are like interference, or background noises).</em>
Objects with Relative density greater than 1 will sink in water. As you can see here, solution has density greater than 1( density = mass/volume = 43/35 = 1.22 g/ml). Hence solution will suspend at the bottom of the beaker. So option A is correct. Hope this cleared your doubt!
Because all objects attract in proportion to the product of their masses.Gravitational interactions exist between all objects with an intensity that is directly proportional to the product of their masses.
Answer:
a) distance = 15340 km
b) time = 3437 seconds
c) velocity = 2.16 km/h
Explanation:
a) If the plane's speed is 295 km/m and it takes 52 minutes to get to its destination, then we can calculate the distance travelled via the distance formula:
Distance = v * t
and since the time units are both the same in the quantities to multiply (km/minute and minutes travelled), then they cancel out and the distance results in Km:
Distance = 295 * 52 = 15340 km
b) For this problem we need to convert Hm (hectometers) into meters in order to be able to simplify the units appropriately when using the distance formula.
recall that 1 Hm - 100 meters, then 3265 Hm = 326500 m
Distance = v * t
326500 = 95 * t
solving for "t":
t = 326500 / 95
t = 3437 seconds
c) In this problem, we need to convert the distance from m to km, and the time from min into hours in order to give the answer in the requested units. We also use the distance formula we have been using so far,
936 m = 0.936 km
26 min = 26/60 h
Then the magnitude of the velocity becomes:
v = Distance / time = 0.936 / (26/60) ≈ 2.16 km/h
