Average speed = total distance travelled ÷ total time taken
AS = (75km + 68km) ÷ (1hr + 2hr)
As = 143km ÷ 3hr
AS = 47.66667 km/hr
AS = 47.7 km/hr (3sf)
Answer:
Explanation:
d = 42 meters
v = 12 m/s
t = ?
t = d/v
t = 42 / 12
t = 3.5 seconds. That's awfully fast.
Answer:
D = 230.2 Km
Explanation:
let distance between seismograph and focus of quake is D
From time distance formula we can calculate the time taken by the S wave
From time distance formula we can calculate the time taken by the P wave
It is given in equation both waves are seperated from each other by 17.8 sec
so we have
sec
Putting both time value to get distance value
D = 230.2 Km
Explanation:
Distance = rate × time
1 m = (2.99792×10⁸ m/s) t
t = 3.33565×10⁻⁹ s
The correct answer to this question is : C) Conduction
EXPLANATION:
Before coming into any conclusion, first we have to understand conduction.
Conduction is the mode of transmission of heat in which heat will flow from a body at high temperature to a body at low temperature in contact or from hotter part of the body to its colder part, without any actual transport of particles.
As per the question, the heat is transferred to driver's hand when he touches the steering wheel.
As there is actual contact between hand and steering wheel, the heat transmission will be conduction.
