The average speed in miles per hour is 541.6 miles/hr.
Answer: Option C
<u>Explanation:
</u>
Average speed is defined as the rate of change in the distance per unit time. So the ratio of distance covered by a vehicle in a specified time gives the average speed at which the vehicle or the object is moving. As in the present case, the air plane has covered 1500 miles in 2 hrs and 46 minute. So the formula for calculating average speed is given below.
So as the distance covered is 1500 miles and time taken is 2 hrs and 46 min, the average speed will be
As we need the answer in miles per hour, so no need to convert the units of distance but the units of time should be converted to hours. As 
hr, we get
So,
Answer:
3.09 m/s²
Explanation:
Given:
Δx = -105 m
v₀ = -27.7 m/s
v = -10.9 m/s
Find: a
v² = v₀² + 2aΔx
(-10.9 m/s)² = (-27.7 m/s)² + 2a (-105 m)
a = 3.09 m/s²
The force is gravitational because when something is falling is call gravitational
The scientist who suggested that atoms contain a hard core containing most of the mass of an atom was Ernest Rutherford.
Answer:
The medium for the sound waves produced by the dog barking is the air
Explanation:
Sound waves are a form of mechanical waves such that it moves from one point to another by the vibration, back and forth of the medium particles from one layer to the next, thereby the particles of the medium remain in the same location and only the wave energy is propagated
The medium which has particles that vibrate back and forth in order to transmit the barking of the dog is the air.
